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IUNION SWITCH & SIGNAL!~ A member of ANSALDO Group 5800 Cor£orate Drive, Pittsbur;h, PA 15237 j; j : j j : j SERVICE MANUAL 6591 Ji :j : INSTALLATION, OPERATION and MAINTENANCE DIRECT DIGITAL CARSPACE SYSTEM ~~~~~·~m*illl~m*illl~~~~m*illl~ March, 1994 A-3/94-3026 COPYRIGHT 1994, UNION SWITCH & SIGNAL INC. PRINTED IN U.S.A. TABLE OF CONTENTS Page Section CAR SPACE SYSTEM 1.1 PURPOSE 1.2 GENERAL DESCRIPTION 1.2.1 Wayside Signal Input Circuitry 1.2.2 Tower Equipment 1.3 SPECIFICATIONS 1.3.1 Wayside Equipment 1.3.2 Tower Equipment 11 CONTROLS AND INDICATORS 2.1 CAR SPACE RACK 2 .. 1.2 CSPI MODE OPERATION 111 THEORY OF OPERATION 3.1 GENERAL THEORY 3.1.1 Car Space Measurement 3.1.2 Car Space System 1-1 1-1 1-1 1-1 1-1 1-1 1-4 1-4 2-1 2-1 2-1 3-1 3-1 3-1 3-1 3.2 DETAILED THEORY 3-1 3.2.1 Wayside Circuitry 3.2.2 Car Space Rack 3-1 3-3 3.3 SUBSYSTEM DETAILED THEORY 3.3.1 3.3.2 3.3.3 3.3.4 3.3.5 Operation of the Phase Detector P.C.B. Operation of Address P.C.B. Operation of the Driver P.C.B. Operation of the Wayside Circuitry Operation of Dual Power Supply IV INSTALLATION 4.1 INSTALLATION CHECKOUT PROCEDURES 3-4 3-4 3-4 3-4 3-9 3-11 4-1 4-1 TABLE OF CONTENTS (continued) Page Section 5-1 V CALIBRATION AND TEST PROCEDURES VI VII 5.1 GENERAL 5-1 5.2 POWER SUPPLIES 5.2.1 Power Supply Adjustments 5-1 5-1 5.3 CARSPACE SYSTEM CALIBRATION 5.3.1 Data Terminal Set-up Procedure. 5.3.2 System Calibration Procedure 5-1 5-1 5-1 MAINTENANCE 6-1 6.1 GENERAL 6-1 6.2 BASIC TROUBLESHOOTING TECHNIQUES 6-1 6.3 FIELD MAINTENANCE PROCEDURES 6.3.1 Flow Chart Support 6-2 6-5 6.4 SUB-SYSTEM TROUBLE ANALYSIS 6.4.1 General 6.4.2 Wayside Circuitry 6.4.3 Phase Detector P.C.B. 6.4.4 Address Board P.C.B. 6.4.5 Driver Board P.C.B. 6-6 6-6 6-6 6-7 6-8 6-8 6.5 DETAILED CIRCUIT AND COMPONENT TESTING 6.5.1 General 6.5.2 Soldering Techniques 6.5.3 Circuit Board Replacement 6-8 6.6 SCHEMATIC DIAGRAMS 6-12 6-9 6-10 6-11 7-1 PARTS LIST 7-1 7-2 7.1 GENERAL 7.2 PARTS LIST ILLUSTRATIONS ii SECTION I CAR SPACE SYSTEM 1.1 PURPOSE The Car Space System is intended for application in classification yards as a car space, data logging and signal conversion device. The Car Space System is a data acquisition system that supplies analog track fullness information to the remote 1/0 ATP data interface for conversion to digital data to be interpreted by the Host CPU that is controlling the Hump Yard. 1.2 GENERAL DESCRIPTION (Refer to Figure 1-1 for the simplified equipment diagram) The car space system is subdivided into two sections: the trackside signal input circuitry, and the tower equipment. 1.2.1 Trackside Signal Input Circuitry The Trackside Signal Input Circuitry consists of: a 30/1 track transformer, a 2/1 signal reference transformer, a 600 ohm resistor and a surge suppressor per each track. Eight signal transformers and eight surge suppressors are packaged in an assembly referred to as the wayside transformer. Each wayside transformer can be used to service a maximum of eight tracks. 1.2.2 Tower Equipment The Tower Equipment consists of the Car Space Rack (Figure 1-2). This is the signal processing center for the total system and is interfaced with the wayside signal input circuitry, and the ATP AJD gate card. The rack contains an analog electronics cardfile, consisting of Phase Detector PCB's, an address board, a driver board. In addition, the rack contains a Lambda power supply assembly. Track signal data is received from the wayside circuitry and translated to an appropriate analog signal level to be sent to the external ATP A/0 converter. The digital output of the AJD is then sent to the host computer for interpretation. 1.3 SPECIFICATIONS A. Track Coupling Transformer US&S P/N N451154-0101 (Figure 7-4) Electrical: 50 V.A.@ 60 Hz Physical Size: 17-1/2" x 6" x 4-1/2 Ratio: 30/1 1-1 lAACKS I I ·et TRACK l "''" CASE NTO t::QUIPMENT I CARSPACE RACX OROU' ov ERALL sH[aD 0 WATS JOE ""' ·---- -- 0 0 I. l CARSPACE PO'wER SUPPLY I SPACE 4 l ISOLATION TRA\;K B );fHA XHIR I I CABLES ro I I l20Vo se CARSl'ACE HZ OTHER OROUPS fCASES){ TO t,CSf CPU CARO="ILE <SPACE 31 ZW! \iATTS CAPAC[TY ===± =- RTP A/D INTERFACE CONN;CTCfl PAIEL ---+--L--~----' '/--,lilJH::, DASHE:O Llk£S IN'JICAIE Fufllf<i GRO\o'TH CAf'f.u!LlfY. ilA'l'SIDE f.llU[Pl-'ENT II L _________ I I I ----------------+ 1201/, Se1 HZ 2il8 \tMTS CAf'AClfY TO\IER EOUIPMENi Figure 1-1: Simplified Equipment Diagram of Carspace System l- 2 - .: :Si U•MBOA ?OWER SUPPI_V ~ @i " o,ns : ·" i """' 011~ 'i .i .,.__ ;:'RQNT __ :i:5 :cic:--c:s 22 :1 '.5 - :NC:-E:S Figure 1-2: Carspace System Rack 1- 3 1.3.1 Wayside Equipment(cont'd) B. Wayside Transformer US&S P/N N451492-0101 (Figure 7-5) contains 8 Surge Suppressors and 8 Signal Transformers Electrical: Physical Size: Ratio: 500 W @ 120 V, 60 HZ. 7-5/8" x 9-37/64" x 10-1/8" 2/1 1.3.2 Tower Equipment A. Car Space Rack (Figure 7-6, Equipto Challenger) PIN 192Y01A17 Electrical: 200 W@ 120 V, 60 Hz. Physical Size: 85.80" H x 21.06" W x 36.00" D B. Lambda Power Supply Assembly Electrical: Input: @ 117 V RMS +10%, 60 HZ. Output: 1) +15V @ 0-3A. 2) -15V@ 0-3A. Physical Size: 5-3/16" H x 21" D x 19" W Weight: 27 lb C. Carspace Cardfile Assembly US&S P/N N451056-5501 Cardfile Contains; Driver Board (1) US&S P/N N451441-8902 Address Board (1) US&S P/N UJ793100-0019 Phase Detector Boards(*) US&S P/N N451441-3101 * - One per group of eight tracks 1-4 SECTION II CONTROLS AND INDICATORS 2.1 CAR SPACE RACK (Refer to Figure 1-2} When operating from any of the system data terminals within the yard control system software operating system, it is possible to monitor the activity of the carspace system by typing in various commands at the system prompt. 2.1.1 CSPI MODE OPERATION CSPI is the name of the routine which reads and displays carspace track information on a continuous basis. This routine is selected from within the 010 1/0 interface test program. (1) To run 010, Log in on the system terminal, and type "DIO" at the system prompt. (2} A menu will appear on the screen with several utility program options. Select menu option "Car Space Input" by typing "CSPI" next to the ">>>" prompt* followed by <RTN>. This will access the carspace test program that allows the verification of all signal interfaces between the Carspace Rack and the Host Computer/ATP. (3) You will be prompted for a track range. Type "1,8" (for P1; "9, 16" for P2, etc .. ) followed by <RTN>. For a single track number, just enter number. (4) You will be prompted to select repeat mode. Type "y" followed by <RTN>. (5) The Driver output voltage, raw value (binary AID output), and converted value (feet) will be displayed until another key is hit. (6) When verification of tracks 1-8 is complete, hit <ESC> to return to menu. '2-1 SECTION Ill THEORY OF OPERATION 3.1 GENERAL THEORY (Refer to Figure 3-1 for the General System Block Diagram) 3.1.1 car Space Measurement The car space measurement equipment measures the distance on a storage track from a given reference point (usually clearance point) to the point of last standing shunt on that track (as produced by the last car on the track). The operation of the car space circuits utilizes the effect of electrical phase relationship reflected from the rails of a track. An alternating current applied to the rails of a track will encounter an impedance composed of resistive and inductive components. This current lags in time when compared to the voltage across a series resistor in the circuit. The inductance of the track varies directly with its length, so that the shunt produced by the last standing car determines how much inductance is offered by the track as a circuit component. When the track is full, the inductive effect will be almost non-existent, and a comparison of these circuit currents with the voltage drop across the circuit's series resistor will be found to be very close to zero degrees of phase shift. Similarly when the track is empty, there is a relatively large amount of inductance in the circuit and the track current will lag the system voltage. Circuits are provided which will measure the amount of phase shift occurring between the two input signals from the track, and therefore, phase shift is the variable used to measure track length. 3.1.2 Car Space System The Car Space System is a data acquisition system designed to provide "track fullness" information, (as a derived function of externally developed track associated phase angle measurements) for a maximum of 72 tracks, to any or all three independent requesting stations. The system utilizes separate and continuously energized phase detector circuits which are multiplexed in a cascaded fashion for identification of a given track in a given group. The selected analog information from the phase detector is sent to an external AID converter. The AID converter output is sent to the Yard system Host CPU. The Host CPU controls the scanning of the phase detectors, stores the digital data, and outputs the data upon request to any of the the yard system stations. 3.2 DETAILED THEORY (Refer to Figure 3-2 and 3-3 for the Detailed System Block Diagrams) 3.2.1 Wayside Circuitry By proper connection of the Wayside Circuitry, the phase angle signals are made to be direct indications of the available car spaces on a track. For any given track at a given location, a range of Oto 3,069 feet (of available distance to last standing car, or shunt, on the track) has its own particular corresponding range of phase angle degrees, (0 degrees to some particular value). The phase angle pairs are terminated in the Car Space Rack Phase Detector, processed by the external RTP AID Converter, run through the pre-programmed Host computer, and used to calculate as track fullness data. .3 - 1 FAILOVEfl LOGIC ADOOESS BOARD SLOT 11 ~ -.--f- TTL OUTPUT DRIVER v' I f'l DRIVER BOAHD SLOT 0 I I - INPUT AID GATE HUX VAX-4000 CPU ,; IIA TCHDOG Tl HER PHASE DETECTOR BOARDS SLOTS I THiDUGH 4 , 110 CDNTR(1-LER - IOBC VT-420 I Figure 3-1: General System Block Diagram I 3.2.2 Carspace Rack The Car Space Rack is wired to accomodate a phase detector for each track -- with eight successive tracks defining a "group". Each group has its own Phase Detector PCB. A maximum of nine groups can be wired into the rack. Depending on the number of tracks used in the yard, one rack could contain one Phase Detector PCB as a minimum, to nine Phase Detector PCB's as a maximum In each phase detector circuit on this PCB, the phase angle information is coupled between the phase comparator and the low-pass filter by an optical coupler. This optical isolation scheme eliminates any direct connection between the rack's filtered analog voltages and outside interference. In addition, separate power supplies are provided on both sides of the opto-coupler to prevent coupling of noise by a common power supply. Each Phase Detector PCB has a multiplexer (referred to as the "track mux") to channel the analog phase angle information to the driver PCB. Each Phase Detector PCB has like channels addressed simultaneously by the 4 bit address PCB output. The track mux selects the specific phase detector circuit on the Phase Detector PCB. The output of the track Mux is forwarded to the driver board for amplification. The resultant DC analog signal is then sent to the RTP AID converter for digital conversion. This is a 12 bit binary equivalent(+/- 1/2 LSB) of the input analog phase angle information. This parallel 12 bit binary phase angle information is routed to the Host CPU and is converted to a digital value of "available car spaces" for the corresponding addressed track. The "available car space" data for each of the tracks is stored and then updated by the Host Computer once a second. In this way, any or all of the requesting stations can retrieve the most up-to-date track fullness information. The Host Computer Completes a full scan of the yard once every second. The scan begins with the selection of the address of the first phase detector circuit (track number one) The driver board output voltages (One for each Phase Detector PCB) are then sent to the RTP A/D Converter. The analog voltages are then converted to binary and stored to memory . The Host CPU then goes back and repeats the phase detector multiplexer and conversion routine for the next channel. This repetition continues until all eight of the tracks on each board are read. After all of the phase detector channels are read, the Host CPU scans the two reference voltages (full scale and half scale) on each Phase Detector PCB to verify validity of data. These references are compared to the programmed voltage references and if a discrepancy occurs, the fail bit for that board is set. After one second the scan is reinitiated and the sequence is repeated. 3- 3 3.3 SUBSYSTEM DETAILED THEORY 3.3.1 Operation of the Phase Detector P.C.B. (Refer to Section VI Figure 6-7) The Phase Detector PCB #UN451441-3101 uses an LM319 dual highspeed comparator to compare the phase difference between the two incoming signals. RC filtering and diode limiting are provided on the inputs of the comparator to provide for transient protection and noise reduction. One of the RC filters contains a potentiometer for varying the phase of its input signal and hence provides a zero set for the comparator. The comparator's open collector output drives the Hewlett Packard 5082-4351 highspeed optical coupler directly. The output of the optical coupler is wired through a resistor to an LM309, 5 volt referenced source. The output of the optical coupler is a fixed pulse amplitude with a 60 Hz repetition rate which varies in width with a phase change. The filter is a 1 Hz. low-pass, two pole Butterworth type using one half of a 747 dual opamp (operational amplifier) for its active element. Pulses from the optical coupler are fed into the filter and its narrow bandwidth removes everything except the DC component of the pulses. The second half of the 747 is an amplifier with a gain potentiometer to adjust the full scale reading of the filter output. An offset potentiometer connected to the non-inverting input of the filter op-amp is used to compensate for the saturation voltage of the optical isolator transistor and to null out the combined offset voltages of the filter and amplifier op-amps. The eight channels of phase detectors and filter amplifiers are fed into a Burr Brown MPC168 sixteen channel C/MOS analog multiplexer. The multiplexer has a four bit BCD digital input code which is used to select the desired channel. Channels one through eight of the multiplexer are used for the phase detector signals, channel nine is connected to the five volt reference source, channel ten is connected through a two to one voltage divider to the five volt reference, and channels eleven through sixteen are not used and are tied to ground. 3.3.2 Operation Of The Address P.C.B. The Carspace address board is an interface to isolate a four-bit address of an output of the external main yard(dual) computer or dual digital 1/0 subsystem from the Carspace system. Isolation is accomplished using opto-isolators and separate input and output power supplies. The circuitry required to switch the address data from CPU A to CPU Bis included. Control of the switching is via external input. The secondary purpose of the Address PCB is to fuse and route the Carspace system clean Power "A" supply, (plus and minus 15 volt) power feeds to the remainder of the Carspace cardfile. 3.3.3 Operation Of The Driver P.B.C. The driver board contains 16 independently connected LM 759 Op amp circuits. Each one of these is designed to amplify the low-level analog output current of the phase detector board. Each Op_Amp is capable of producing as much as 325 ma of drive current to an externally connected load. This non-inverting follower configuration of the OP Amp circuit causes the output signal to remain very stable under a variety of loading conditions. Because of the feedback design used for this configuration, it is a unity voltage gain circuit. There is one LM759 Op Amp circuit used for each Phase detector P.C.B. '3 - 4 r------------------------ COM'UTER ROOM ,--------, ,----, I ---------- I I I I RTP A CARSPACE ELECTRONICS CABINET 1 I I I DATA FROM I I I GROUP I t------------------·-··--------------------------:1 P /0 MTB I SIGNAL Cll.13LE CARSPACE RACK pI PI I ADDRESS TO I <ANALOG) I I I I I I I I I I,____cA_R_sP_Ac_E_R_Ac_K_ _ _ I i I I I I I I ADDRESS SWITCHING CONTROL I CPU A I I-- l ___"~---J ,-----RTP B I ,1-1 I I I FAILOVER : L~~~c -i IJ__ I ,_ I I I rI - __?~ - - - I I I I I I COtHROLI CPU I I I P3 ADDRESS TO DATA FROM (ARSPAC[ RAU< 1 <~ROI.IP 3 SIGNAL CA81[ ,---------------------··--··-------J I I I I I I I I I I I I I I I I I I I I I I I I I I I_ _ _ _ _ -[ r : I 1===-----I II I I ________ SIGNALS FROM GP2 TRACKS _, I _J GROUP 4 SIGllAL CABLE - - - - - - - - I I I I ( ARSPACE ['lll I PI.CNT P 10 CS CASE I I - 1--------l , ----~~-----_ _- =········.·· ·:: SI GtJAL $ fROM GP3 !RAUS r I I I I 1--- GROUP 4 CABLE , _____ - ---------, :: =~ I ,_ - I I I I GROUP 3 CABLE , I SlGtlALS rPOM '----· pI I I I-------I _________ 1------1-------- P 10 MTB I I I I I I 1 ,------I I I I CARSPACE RACK PIO cs CASE ~~~u~w\~A!~~ - : , _____ J I I B' I I I I I I I I I i I ~ 2 GROUP SJ GNAL CAOLE CARSPACE EQUIPMENT I I ADDRESS SW! TCH l!JG I I - I •I I : I I I - A/8 SELECT i I I I I I rzl------------------------1 r2 I I I I I I I I I I I l ~_'.'_~--l I I I I I I I ,--------1 GROUP I CABLE ....----~,=AN~ALO~G-,---1 I I F !ELD EOUIPMctH L_ ~~_4_ ___I I I I I I I I I I J I _________ J -1 SI GtJ!il S GP4 TRACKS r CAR SPACE LA\OUT Dlf<ECT DIGITAL 4-GROUF'S --------------- ---------------- -------------· -·· --~~"--·-------------- ---- --flz-;-:;-~~--~ 3· 5 /( ------------COMPUTER ROOM , C Al RTP RACK CA I ANALOG GATE Ml.IX A Al{) - - ) 8 CH II - - - - - - - - - - - - - - - - - - - - - - - - -I CAR SPACE I ELECTROIJICS CABINET I ------------------1 I - - "" "'" I I CARDFILE I I PHASE I I I I ~CP:i,U'2_A~At~lA~L£( OG~S_l__'.IG~N~AL':_:S~I I ~_::_:___·:______ _:---;~ 1---------,I >- CAR SPACE CASE FIELD EOUIPl.£NT I << 1 A CONNECTOR ORI VER PCB )~ SLOT O DETECTOR PCB I N~UT EDIG[ EDGE ' fiPIJT C~I_Jl_~~~~~-'---~;;;;;« B COWIECTOR >- ,__:: 2 L_____________ EDGE INPUI v I t~PUT PCB I L----0>--__<:_~~~---------~~<<E----, B CONNECTOR 4 ecs, OPTO .--- ~~>--- EDGE RYI ___AO_ _EDGE <( IIJPUT \ )>-------4 \ - - ---1-----------, / I -------~-----i--~ l' >"-----0>-----l r»------';)-------i- f "> I \ --)> -------------;,------------1 --------!- -----------1:-------------1-- ( I ·1' >.'·------ -_.-_____________L_I _________ , - - - - - - - , - - J>>----' . ----- - I \ )\-----}>-------1----- I - - ----- _ - ATP RACK IAI WATCH DOG CPU A / TI M:R A RlP RACK CB I WATCH DOG I I I I I CPU B >>--------- 'vL~ 8 ---- £ OGE D l~L.- - ,- r~-j I I v~_J - - ~ --------- - - - - --- ------------- - - y ~ ------ -POWE.11 SUPP! y AS':,EMBL y ---==~=-------- -~=_!l_ _J -+ 1 'lV '---- -~ _______________________ _ J l H.£R B CPU SELECT I Otl RTP DIG ltO ---=-=----~=v- j - SLOT 11 _JJ ,____,_____ ' L-----'~ >---S_!'._l~~:____-------~-z;;;;;;tcu;-R-------- ------- L_ Ii !-------- --<?-------_ ___c::_~:..__::!:__________- - A- COflt<EClOR I L__ _ ~ I --------<~ A COIJIIECTOR SLOTS f "'TO 4 I I I I I I I ,_____ - - - - - - - - - ·- - - ~ --- ---------.,-------------,-- A COtHJECTOR L------'7)---~~___:_:.;_______ I -~ >------1------I _____<:_~~~--------~;:;;;;<L-......_._..~, >-- i----------1-----,--, I \,_·>---- 8 1------1---=X , ( >>---+:-- 6 IIIPLIT PACKAGE >----~ >----- ---,- - J>;------- 7 _____2[ CASE TRANSFORMER J>>-----+ >---------,-------~-----,--- ltiPUT IIIPUT __E!~------~BB-;c;o;;;;,,,11:'cToR aI • \ L---7 >---E'.'Ll_!l_ I " I ·1 >>--~>------! ADDRESSING I v I I J>>--------,.>------, I l ------<( I I :~---' F" A 11 OVER COtHROL / / j 3.3.4 Operation of the Wayside Circuitry (Refer to Figure 3-4) The operation of the wayside circuitry is best described by the use of vector diagrams. By using vectors, a true relationship between phase angle and track length can be determined. The line voltage (EOA) is equal to the sum of the voltage drops across the track transformer (EBA) and the wayside resistor (EOB). EBA varies directly with the number of car spaces available. As the car spaces increase the track impedance and EBA increase, and as the car spaces decrease, the track impedance and EBA decrease. When EBA increases, EOB decreases causing angle "one" to increase. When EBA decreases EOB increases causing angle "one" to decrease. The relationship of phase angle to the measurement of track length can be determined by observing the instantaneous polarity and turns ratio of the wayside transformer. EBC is opposite in phase and equal to one half of EOA as shown by the vector diagram of Figure 3-6 . Vectoriallly, Figure 3-4 is described by: NOTE: Z ' is the reflected impeqence felt through the 30/1 track transformer. jw A ! a IR.wysd = Eoa WAYSIDE IR DROP ;igure 3-5. a IR' TIC. TRACX IR LOSS Vector Relationshi? of the T=ack Transor:ner Voltage Droc (E ) , the Wayside Resis~or Voltage Drc9 (Ea~l, BA and the Line Voltage (E 0 Al. jw I ! !X' I I I Eos ~-~~.....;_..;:i;.,._ _ _ _ _. . , , . _ ---- 3 ?igure 3-6. J. ----~>,.. IR.' 'lee-tor Rela tionshi? 3et·..-een .::. 0 A and E3 c Added to Figure 3-5. 3-9 ! ~ · I ~ ... ":. -~·~ ~r_- ~::-··-~~-r ,..-...... 1,:'",i_.__ . _ . . , . , ....... '!'" .M; A --a ~2;1 :-0 v> .!.. c, , I 1~Line = ffP.i!?Mi .lffll. . .!Ff'J~ Wf.\118*. ':X;P,t!!::',,,...(i,-~.'~-~_,,,..~-l"~ .....a.,0445 -?MVAA.¥4 NU.4¢ $ .... ,- .. - - - "TRACK XFMR" + r, ~~ ~31011~ s ~ XTK=f(TK Lgth) ? 2TK = RTK +X TK : RTK=g ('rK Lgth) E =l20V (RMS)OA @60Hz ;;;z p o{lllrs' + (L B WAYSIDE XFMR I i Eoc Rwvso 4 I EBC EOB + i I PHASE COMPARATOR 0 Figure 3-4. Typical Wayside Circuit Diagram for a Single Track On the Vector diagram, transferring vector EBC to Point "B" produces: ------31::W-• I c Figure 3-7 Vector Relationship Between Phase Angle and Car Spaces Available. Added to Figure 3-6 Vector EOG is equal to the sum of EOB and EBC. Angle "two" represents the phase shift between EOB and EOG, which is the car space data sensed by the phase detector. By considering the extremes of track length for a minimum and a maximum value, note that angle "two" varies directly with angle "one" and EBA, and inversely with EOB . Hence, phase angle and track length (car spaces availabl-e) are directly related to each other. 3.3.5 Operation of Dual Power Supply Refer to Lambda Service Manual. SECTION IV INSTALLATION 4.1 INSTALLATION CHECKOUT PROCEDURES Upon completion of the wayside and tower equipment installation, perform the following procedures for making the Car Space System operationally acceptable. (I) Inspect and test the integrity of insulated joints, "far end" shunts and rail bonds (if used) of each track. Also at this time, check that undesired track shunting paths do not exist. (2) Verify that the proper track connections are made (the circuitry for track #1 indeed connects to track #1 and not to track #2 or #3, etc). (3)Verify that the proper track transformer polarity connections are made (adjacent rails of adjacent tracks are in phase for similar track shunting conditions). (4)Perform the calibration procedures of Section V, "Calibration of the Car Space System". 6053, p. 4-1 SECTIONV CALIBRATION AND TEST PROCEDURES 5.1 GENERAL (REFER TO FIGURE 5-1) Calibration of this system is determined by comparing observed output readings with respect to controlled input signals. For proper calibration of this system, the power supplies must be properly adjusted, each of the Phase Detector PCB's must be properly zero and gain adjusted, and then the total system checked and adjusted. The carspace system performance will vary with changes in climate, therefore, seasonal re-calibration of the system is suggested. The following procedure should be followed whenever attempting to calibrate the carspace system. This procedure will cause a false "distance to go" reading to be sent to the yard computer. It is suggested that the track be empty or, at a minimum, open to approximately 950 feet. The track should be blocked and the switch ahead of the track transformer should be spiked. Calibration and trouble analysis of the equipment used in this system necessitates that maintenance personnel have a working background in electronics including theory and fundamental troubleshooting procedures. Failure to obtain the correct readings from previous steps will require troubleshooting not covered in this write-up. 5.2 POWER SUPPLIES 5.2.1 Power Supply Adjustments Apply power to Carspace Rack. Turn Lambda Power Supply on. Verify +15V +/- .15V on the following extender card pins: A22, AZ, 81, BA. Verify-15V +/- .15Von A18, AV, 85 and BE. Verify Common on AG, AF, 83, and BC. Adjust Power Supply outputs as necessary per Lambda Product Manual. Maintain per Lambda Product Manual. 5.3 CARSPACE SYSTEM CALIBRATION NOTE: Refer to Section VI, General, for the recommended test equipment needed to perform the following procedures. 5.3.1 Data Terminal Set-up Procedure following the procedure described in Section II of this manual, set up the data terminal to display carspace information on the screen. This will be required while performing the system calibration procedure. 5.3.2 System Calibration Procedure This procedure is for calibration purposes only and is not intended as a troubleshooting guide. It is therefore assumed that the carspace system has been working correctly and all wiring and components have been previously verified. For total system calibration, start with tracks #(1-8) Phase Detector PCB and check from track #1 to track #32 sequentially. Refer to Figure 6-7, Phase Detector Troubleshooting Guide. The following stepwise procedure is written for calibrating any one channel on any one Phase detector PCB. Specific pin number information is provided in Table 1 below. 5-1 PCB Channel No. 2 1 Zero Potentiometer Offset Potentiometer Gain Potentiometer Comparator output test point PCB board output test point 3 4 R1 R7 R13 R19 R98 R99 R100 R97 R105 R106 R107 R108 TP1 TP2 TP3 TP4 TP18 TP19 TP20 TP21 5 6 7 R25 R101 R109 TP5 TP22 R31 R102 R110 TP6 TP23 R37 R103 R111 TP7 TP24 8 R43 R104 R112 TP8 TP25 Table 5-1: Phase Detector PCB Output Test Points And Potentiometers for Channels 1-8. 1.) "Power Off' the instrumentation card file. 2.) Remove the Phase Detector PCB to be adjusted, insert Extender card, and reinsert the Phase Detector PCB into the extender card connector. 3.) "Power On" the car space cases (breakers on fuses in). 4.) "Power On" the Instrumentation Card File. 5.) Connect a DVM positive lead to pin A 16 of PCB under test. Connect negative lead to TP26. Adjust R147 until the meter reads 5.00 V +/- 0.02 V. CAUTION: STEP 6 INVOLVES WORKING WITH 120 V. ANY CONNECTIONS SHOULD BE MADE WITH 120 V POWER TURNED OFF. 6.) a.) Option 1: Unplug Wayside input connectors (P1 - P8). Connect Carspace Simulator output cable to input connector (P1-P8) for channel under test. Jumper input pin B to input Pin C with the common wire on Signal Pin Ref. for channel under test. (See Table 5-2). Confirm two sine waves are in phase with a dual trace scope on Pin 821 (Channel 1 scope probe) and 822 (Channel 2 scope probe) with respect to 820. Disconnect scope probes and common lead. Option 2: Remove 120 V power from case. Disconnect the signal C (Sig C) wire at the case transformer N451492-0101, Terminal C (C1-C8) for track under test. Place this wire in parallel with Signal B (Sig B) at Terminal B (81-88) . Apply 120 V power to case. Confirm two sine waves are in phase with a dual trace scope on Pin 821 (Channel 1 scope probe) and 822 ( Channel 2 scope probe) with respect to 820. Disconnect scope probes and common lead when finished. Signal Pin Ref. Signal Pin B Signal Pin C 1 820 821 822 2 817 818 819 3 4 814 811 815 812 816 813 TABLES-2 5-2 5 6 BX BU BY BV BZ BW 7 BR BS BT 8 BM BN BP b.) Connect the Positive scope lead to the comparator output for the track under calibration (See Table 5-1). Place the negative scope lead at TP17. Observe the 15 Volt (approx.) pulse. Adjust Zero Potentiometer (bottom row of pots) until the pulse width decreases to the point where it disappears. c.) Return The Sig. C wire back to its original position on the case transformer as required. 8.) a.) Adjust the gain potentiometer for this track (top most row of pots) 5 turns clockwise from its most counter-clockwise setting. b.) Connect a DVM positive lead to the PCB output Test pin for this track (See Table 5-1) negative lead should be connected to TP 26 for all measurements. c.) Place a good shunt across the rails at the connections to the track transformer for the track under calibration. Make sure connections are clean and tight. d.) Adjust offset pot for this track (middle row of pots) so that the DVM reads 0.000 VDC. Make sure data terminal display reads O Feet. Adjust as necessary to zero display. e.) Disconnect the shunt from the track. 9.) a.) Measure the rail and permanently mark it with paint at 900 feet from the track transformer leads. Place the shunt tightly at this point. b.) Adjust the gain potentiometer for the track under test (top most row of pots) such that the data terminal display reads 900 feet. Note: Normal drift about this number is typically within +/- 5 feet. The measured pulse width at the comparator output for this track (See table 5-1) is typically between .9 and 1 millisecond. Typical voltage is 1.5 volts. 10.) a.) Measure the rail and permantly mark it with paint at 600 feet from the track transformer leads. Place the shunt tightly at this point. b.) The data terminal display should read 600 feet+!- 55 feet (1 standard car length) Note: The display will normally drift within +/- 5 feet over time. The carspace system accuracy is contingent upon the quality of cable, cable connections, rail, rail shunts, and especially rail bonds. The carspace accuracy is relatively linear to to the calibration point of 900 feet, then increasing in error to the end shunt. This is normal. c.) Remove test shunt from 600 ft. point. Verify that the data display reads the distance to go to the last car, or if empty, the end of track length to the double end shunts. 11 .) Repeat steps 7 -1 O on the next channel of the Phase Detector PCB. 12.) Repeat steps 1 - 11 on the next Phase Detector Board. 5-3 SECTION VI MAINTENANCE 6.1 GENERAL Trouble analysis of the equipment used in this system necessitates that maintenance personnel have a working back-ground in electronics including theory and fundamental troubleshooting procedures. The following test equipment, or equivalent, is recommended for equipment troubleshooting: Multimeter Simpson 260 Digital Voltmeter Fluke Fairchild 8000A 7000 Oscilloscope with two 10:1 Divider Probes Tektronix 465 Two Extender Cards US&S UN451441-1101 Two Rail Shunts - 7 ft. long with heavy rail clamps (.06 ohm or less) 6.2 BASIC TROUBLESHOOTING TECHNIQUES The troubleshooting procedures for the total system are arranged in an order that checks the simple possibilities before proceeding with extensive troubleshooting. The first few checks below assure proper connection, operation and calibration. If the trouble is not located by these checks. the remaining Field Maintenance or Sub-System Trouble Analysis procedures for locating the defective sub-system or PCB can be used. When the defective part is located, it should be replaced following the replacement procedures given under Corrective Maintenance. (a) Check Control Settings Incorrect control settings can indicate a trouble that does not exist. Make sure that all of the system controls are set properly. For example: Is all of the power being supplied to the Car Space Rack, wayside circuits, displays? (b) Check Associated Equipment Before proceeding with the troubleshooting of the Car Space Rack, check that the equipment used in conjunction with this rack is operating correctly. Check that the signal lines are properly connected and that the inter-connecting cables are not defective. (c) Visual Check Visually check all of the car space sub-systems. Many troubles can be located by visual indications such as unsofdered connections, broken wires, a damaged circuit board, damaged components, etc. Make sure that all of the cable cards and connectors are coupled and fully seated. 6-1 (d) Isolate the Trouble to a Circuit To isolate the trouble to a circuit, note the trouble symptom. The symptom often identifies the circuit in which the trouble is located. (e) Check Power Supplies If all of the circuits are operating incorrectly, the trouble may be in the power supply. However, a defective component elsewhere in the unit can appear as a power supply failure and may also affect the operation of other circuits. The Lambda Service Manual lists the tolerances of the LND-W-152 power supplies in this system. If the power supply voltage is within the listed tolerance, the supply is considered working correctly. If the power supply voltage is outside the listed tolerance, the supply is either misadjusted or operating incorrectly. 6.3 FIELD MAINTENANCE PROCEDURES The possible trouble symptoms can be generalized into two categories: (I) A failure in the "front end" of the system which would be indicated by faulty data to an entire group(s). (2) One of the tracks displays the wrong car space data as compared to the actual known car space availability reported by the others. Using this generality, the commort failure symptoms of the Car Space System can be identified as follows: (1) Bad Data being sent to Terminal Display (Refer to Figure 6-1) (2) Routine Calibration Indicates Faulty Readings. (Refer to Figure 6-2). Troubleshooting flow charts for locating and correcting a problem, have been developed for each of the symptoms listed above. The symbol functions used in the flow charts are standard and are defined in Table 6-1. NOTE Before applying the flow charts for trouble analysis, check the basic troubleshooting techniques of this section . CAUTION 120V, 60HZ, AC EXISTS ON THE INPUT PAIR TO THE FRONT END OF THE PHASE DETECTOR PCB'S. 6-2 NO APPLY POYER TO ALL ASSEMBLIES I YES ' c NO S CORRECT VOL TAG£ PRESENf AT ORJVEA BOARD OUTPUT? S CORRECT Vil.TAG: P!l£SENT AT PHASE IUEClCJI PCB OUTPUT PIN AA? YES POSSJBLE FAUL TY OR J\/ER BOARD 1 YES •o POSSIBLE FAULTY RTP A/0 INTEFACE ARE FIELD INPuT NO CONNECT CABLES CABLES PROPERL 'f CONNECTED TO RACK? ARE OTHER SE VEN CHANNEL OUTPUTS CORRECT? / JS .:I.LL loiAYSICE 2"CUIP,..ENT ANO ::RCUl :'~'!' •CAKING .~ACP~RL r? PROPERLY CHECK AOORESS BOARD &. NO FIELD E:GU!P~ENT CONNECi IONS/CPEAAT l ON PEA SEC. 6.-4 ANO 6.5 .,a -! ~ - S E ? . - I RO-ER ~~gr~~~ ~F4 CARSP4CE ."4ANL.:AL. ' · ~ Figure 6-1: Bad Data Sent To Terminal Display '7-3 I ~~~~~~~' ' I 1----i I I! ROUTINE CAI.IBRAT!ON INOICATES FAULTY REAOINGISI SUPP!.. Y SIGNAL OF KNOWN PHASE SHIFT TO PHASE DET. INPUT CHANNEL I SI j c IS THIS PHASE SHIFT REFLECTED IN PHASE DET. OUTPUT VOLTAGE? NO REPLACE PHASE OETECTOR ANO CAL! BRA TE NEW ONE YES B DOES CORREC~ VOLTAGE APPEAR AT CR I VER BOARD OUTPUT? NO REPLACE CR I VER BOARD YES I ' A I :S RT? .0/D !NTERFACE CONNECTED 4NQ ~ORKINO NO RE?•IR RTP AID INTERFACE ?RCPERL 'f? ::csSiSLE: :-.:ic:... ~v <iA'fSZ:::: ::~u:.=>.1E\-:' c:-i:C:< ?::,::i: SECT: :~1 :::i.--' .;,',Q ·I I o. 5 Figure 6-2: System Calibration Indicates Faulty Readings I , : 6.3.1 Flow Chart Support Ref. A - It is possible that the RTP rack(s) may not be powered up, or that one of the ND cards is not plugged in. The gate card is located at word 91, and the ND card is located at word 88. Also, make sure that host computer is up and running. Ref. B - Use a DMM to read analog voltage at output of driver board. This voltage should be between 1 and 4 volts depending on the distance to the last standing car on the track. Refer to attached Driver board schematic (N451441-89E) for output pin assignment information ____ SYMBOL ) ( D Il STANDARD DEF. COMMENTS "Terminal Box" Used For Starting and finishing a Flowchart "Decision Box" The next logical question in the troubleshooting procedure is asked here and in such a way that either a "yes" or a "no" is the only possible answer. "Process Box" Describes the next logical process or operation to be perfromed. "Subroutine Box" Tells the Maintenance Personnel to perform one of the referenced trouble-shooting procedures. *ALL OF THE BLOCKS IN THE FLOW CHART ARE REFERENCED WITH LETTERED DESIGNATIONS, WHICH ARE DEFINED IN THIS SECTION UNDER FLOW CHART SUPPORT. Table 6-1. Flow Chart Symbol Functions 6-5 Ref. C - Use a DMM to read analog voltage at output the Phase detector board. This voltage should be between 1 and 4 volts depending on the distance to the last standing car on the track. Refer to attached Phase detectorboard schematic (N451441-3101) for output pin assignment information, and Section 6.4.3 of this manual for troubleshooting guidelines. Ref. D- Does all of the wayside equipment and circuitry prove good? By performing the steps included in the Wayside Circuitry Troubleshooting Guide of this section, the equipment and circuitry for the wayside can be checked. Ref. E - Calibrate the Phase Detector PCB. Perform the procedures of Section V, Phase Detector Calibration. If board still does not work properly, repair and test per US&S spec. EU6346 6.4 SUB-SYSTEM TROUBLE ANALYSIS NOTE The schematics for all of the sub-systems and their interconnections are included at the end of this section. 6.4.1 General Once the problem is traced to a particular sub-system, one of the following steps can be performed: (I) Replace the defective sub-system with a known good spare. (2) Repair the defective sub-system as per the following procedures. WARNING MAKE SURE POWER IS OFF BEFORE REMOVING ANY SUB-SYSTEM, OR DAMAGED COMPONENTS MAY RESULT. 6.4.2 Wayside Circuitry (Refer to Section Ill, Operation of the Wayside Circuitry) (I) Determine that all of the lightning arrestors and surge suppressors are not leaky, and the fuses are not blown. (2) Make certain that the following voltages agree: (Refer to Figure 3-4) (a) (b) (c) EOA = 120V rms ("E Line" of the Wayside Transformer Primary) EBC = 60v rms ("E Secondary" of the Wayside Transformer is equal to one-half of EOA). If not, the wayside transformer or its connections are faulty and should be repaired or replaced. Remove one secondary lead from the track connection of the track transformer 6-6 Esec =..EAB 30 The secondary voltage of the track transformer should be equal to 1/30 of the primary voltage. If not, the track transformer or its connections are faulty and should be repaired or replaced. (3) Check the value of the 600 ohm resistor and verify circuit continuity between the main terminal board and the track transformer. (4) If able to change the location of the last standing shunt on the track in question, do so, and check that the phase angle variation between EOC and EOB agrees approximately with the relation described by the graph of Figure 6-6. Make a quick check by making and breaking a shunt across the secondary of the track transformer and observing that the phase angle goes to zero when shunted. PHASE ANGLE (TIME IN MILLISECONDS) NOT DEFINED LINEARLY BEYOND IOOO FT. / .833 i--~~~~~~~~~~~--,./ .417 500 1000 DISTANCE(FEET) (From TrackXFMR to last standing shunt) Figure 6-3. Phase Angle In Relation To Distance Graph 6.4.3 Phase Detector P.C.B. The Phase Detector PCB consists of two main sections: the Phase Detector Circuit and the Multiplexer. Each section is checked out as follows: (a) The Phase Detector Circuit (I) Perform the Phase Detector Calibration Procedures of Section V to determine if the circuit is operating correctly. Satisfactory completion of the calibration procedures indicates that the circuit is operating correctly. Any error that develops during the calibration procedures indicates a circuit failure that can be corrected by performing the following trouble analysis steps. 6-7 6.4.3 Phase Detector P.C.B.(cont'd) (b) (2) Refer to Rgure 6-4, and with an oscilloscope make a point to point comparison of the specified points. (3) Determine which components are faulty and replace them. Repair any loose or damaged connections. The Multiplexer If the Multiplexer is suspected of being the problem, compare the output signal to the input signal of the multiplexer by addressing the proper channel and monitoring the output. If the output does not correspond to the addressed input, the multiplexer chip (IC25), or its connections are faulty. 6.4.4 Address board P.C.B. If the Address Board P.C.B. is suspected of being faulty, refer to US&S Test Spec. EU7995 sheets 8-1 O for detailed testing instructions. 6.4.5 Driver Board P.C.B. If the Driver Board P.C.B. is suspected of being faulty, refer to Section V of US&S Test Spec EU-7782 for detailed testing instructions. 6.5 DETAILED CIRCUIT AND COMPONENT TESTING 6.5.1 General A) Check Voltage and Waveforms Often the defective component can be located by checking for the correct voltage or waveform in the circuit. Typical voltages and waveforms are presented through out this manual. NOTE Voltages and waveforms given in this manual are not absolute and may vary slightly between units. B) Check Individual Components The following procedures describe methods of checking the individual components in the Car Space Sub-System. Components which are soldered in place are best checked by disconnecting one end. This isolates the measurement from the effects of the surrounding circuitry. 6-8 (I) Transistors The best check of transistor operation is actual performance under operating conditions. If a transistor is suspected of being defective, it can best be checked by substituting a new component or one which has been checked previously. However, be sure that circuit conditions are not such that a replacement transistor might also be damaged. If substitute transistors are not available, use a dynamic tester (such as Tektronix Type 575). Static-type testers are not recommended since they do not check operation under simulated operating conditions. (2) Diodes A diode can be checked for an open or shorted condition by measuring the resistance between terminals. With an ohmmeter scale having an internal source of between 800 millivolts and 3 volts, the resistance should be very high in one direction and very low when the leads are reversed. CAUTION DO NOT USE AN OHMMETER SCALE THAT HAS A HIGH INTERNAL CURRENT. HIGH CURRENTS MAY DAMAGE THE DIODE. DO NOT MEASURE SCHOTTKY DIODES WITH AN OHMMETER: USE A SUBSTITUTE DIODE. (3) Resistors Check the resistors with an ohmmeter. Check the Electrical Parts List for the tolerance of the resistors used in this instrument. Resistors normally do not need to be replaced unless the measured value varies widely from the specified value. (4) Transformers Check for open transformers by checking continuity with an ohmmeter. Shorted or partially shorted transformers can usually be found by checking the waveform responses when high-frequency signals are passed through the circuit. Partial shorting often reduces highfrequency response (roll-off). (5) Capacitors A leaky or shorted capacitor can best be detected by checking resistance with an ohmmeter on the highest scale. Do not exceed the voltage rating of the capacitor. The resistance reading should be high after the initial charge of the capacitor. An open capacitor can best be detected with a capacitance meter or by checking whether the capacitor passes AC signals. C) Repair and Readjust the Circuit If any defective parts are located, follow the replacement procedures given in this section. Be sure to check the performance of any circuit that has been repaired or that has had any electrical components replaced. 6-9 6.5.2 Soldering Techniques WARNING DISCONNECT THE UNIT FROM THE POWER SOURCE BEFORE SOLDERING Circuit Boards Use ordinary 60/40 rosin core solder and a 35 to 40 watt grounded pencil type soldering iron on the circuit boards. The tip of the iron should be clean and properly tinned for best heat transfer to the solder joint. A higher wattage soldering iron may separate the wiring from the base material. The following techniques should be used to replace a component on a circuit board. Most of the components can be replaced without removing the boards from the unit. 1. Grip the component lead with long-nose pliers. Touch the soldering iron to the lead at the solder connection. Do not lay the iron directly on the board. 2. When the solder begins to melt, pull the lead out gently. This should leave a clean hole in the board. If not, the hole can be cleaned by reheating the solder and placing a sharp object such as a toothpick into the hole to clean it out. A vacuum-type desoldering tool can also be used for this purpose. 3. Bend the leads of the new component to fit the holes in the board. If the component is replaced while the board is mounted in the unit, cut the leads so they will just protrude through the board. Insert the leads into the holes in the board so the component is firmly seated against the board (or as positioned originally). If it does not seat properly, heat the solder and gently press the component into place. 4. Touch the iron to the connection and apply a small amount of solder to make a firm solder joint. Do not apply too much between the component body and the solder joint with a pair of long nose pliers or other heat sink. 5. Clip the excess leads that protrude through the board. 6. Clean the area around the solder connection with a flux-remover solvent. Be careful not to remove information printed on the board. 6-10 6.5.3 Circuit Board Replacement If the circuit board is damaged beyond repair, the entire assembly including all soldered-on components, can be replaced. Part numbers are given In the Mechanical Parts List for the completely wired board. Observe the soldering precautions given in the soldering techniques of this section. If the bottom side of the board must be reached or if the board must be moved to gain access to other areas of the unit, only the mounting screws need to be removed. The interconnecting wires on the PCB can quickly be disconnected to allow the board to be removed. WARNING MAKE SURE THAT THE POWER IS TURNED OFF BEFORE REMOVING OR INSERTING A PCB. THIS PROCEDURE WILL PREVENT FURTHER CIRCUIT DAMAGE. 6.6 SCHEMATIC DIAGRAMS Application Drawings and PCB schematics for the Car Space System are provided to aid the maintenance personnel in system troubleshooting. 6-i i f:''i:,__·.;- - - - - - - - - - - - - - - - - - , :l> • !:t:?'\i. !:·~· i: t·.j,·~·; ,~· l !,,, w.osrot CASE r-, w-- I- - - - - , I I __ I"' -I - '" I o_ - wus1or Slt?UL xr~ PkO UN4S1•9l-OIOI tSU NOTE 1' ------...,_ - -cs" -.- ~ . ~ "r,,Jl[2P ::511c·p Ir, ~ 1130 J::~' ,r PHAY /COlf'UT[R noolJ !5 " " __J_-{ ~ ' 2P IP 9 • 120~ - - - ~ · 1S01..At1ou ,:rm '?!OOW RA1'UIO ISEE N01'E 6f A .... 2,1 .-=~-~-----•--GNO •9 .,v ... ,. ltt' • FIG• )•2 ><vs -, I 111.r 1101~ 1-' . •• nucr. 82 w C2 t1k f/;=r==~~-~-~ T W_ SIGUALS 2P '""" '"c.s. cnour o" . U ~,--« I L___ S<t HOf[ 3 SHOWN $0 TM.-T .tOJAC[NT RAtlS OF AOJ.lC[Nf TRAC•S Wfll T••c• ]. et '" rnou ··c.s. CROUP"! ··c.s. CROUP"! r»AS[ fOR Slt.fll,t,R CONOlflONS. 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"",., "\ 1 o.o 'T '~Olf ~_J ...... rf1 .... co --ii t.011 •• +sv sovrc.e 1110 ~~ 'Ji.i: r'~I ..~.:m I' - Lr o.u~ L 1 i' F11~ure 6- lo l'hnse l)(!tector Trouhleshootlnr: <:ulde ?. \fc,/17 I II 10 I 12 15 16 II 18 [ fROUT BOTTOJ-4 I <J 21 23 24 25 lB 31 }O a2t-----w ,-.--- - - - - - - - - - - 2 2. 7K I t2W --~ TP Cl <170i ---- __t __ _·, ; , ' • 2 2 821 a, ::t § ~ -_. . ---- - - - - - - - 9!--ffi_____ _ 822 II ~418 R, ~lf~~g)_5 s ---- -~~ nf',C ~ =1-1 -- - 2 4 ~ u I 0 n s 823 ------ ' 82418 N RI< 2,____ _ _ ~ - - - - - - - . - 2--,o-o_R_E5-5---~: -- --,~llfl:@i.:::i~ J- _________,.. --l---------''"'J:_:_•:::DD:;_R=E-=-55'-- lP G~p2 ~-------~ > " 0 I I I R26 '---l---l---+---l-~- I Ill @------i--A20 Al f ,, I _____ , _ '1-vcc GUO 1 --- - _c~u 9241 l ., µr AL lP ~e AM '--------------~ AH ... NALOG TEST POINTS FROM PHASE DETECTOR PCB 1 S '-------·--------~ u I I ';; I AR LED •2 \ \ AS - _____________'p_;_•s_v___ ~ - Rl6 -----1__:2 J _.c;A • ISV 8 ,:"' AZ ---,-4~r- 6 =----'~ ___c:_A B I AO RI -- - ~ - - - - - - - - - - - - - - - - - - - - - - - I I VIA CARDF ILLE wJ RING ~ \\ ~ I ; I ! I I I I I I I I I I I I ~ I ~ I ; I '? I 8 ANALOG COl.4-KJII n, ~ I )1 A SUPPLY tlSVOC OUI 10 PHASE DETECTOR PCB'S VIA CAROF'ILE ltJRING jl ~ l ii ,s I ----e-w--e------------------1~ ZERO OHW I I .&.20 A2J u I I RI 824 I l ;; c _, A22 ~ 8 110 --~ L-[>-------J A21 ._ lP TEST SLOT l~~o"l ?>-----r------:;--~\-- ('"'-- __1}------l>--i 6241 A ~ -! ,so 150 .-. _ t________4 t ___________ ~ t_______________ LEOAI\\ ll {"--.__12 Rl2 REOt.:;\ \'.'v---------1-----//'-'-1----'I.N'-----~- FRONT TOP AH() COHN, •2 TP GP' 1 1.' Z£RO OHM A ,so :• t____________7 GP' 6 lED AO 8-- !j----t;>o----1-'-~0-- N <O ~· _______ IP f»---!?~0-- @----_!_I- 85 4 7~\~- - -, l'JRINC L GP 5 "' r· -- PCB'S VIA (AROf IL£ r,~r, crf~J-f~~~~~~--:: TP 824 PHASE 0£HCTOR - :., GPT, I 0 ~------------1-P-------tE ___ - ,pL,,----- :: 84 0 ,, ~ ADDRESS OUT TO -_-_-_1_--' ___VV'-----~ J_________ - - _ JJ__ IF '.!!.'_~ no_· -- ______________e_____ TP CJ ~ TP A2 W 6 ---~ A AC R,4 '_'_o_• _ _ _ _ _ _ _ _ _ _ _ _-_ BJ 4 ... TPIC2 54 ~------4--------_::•::•__:::AD:,DcR:.::_E5:::5:__~ TP Al w ~ 53 52 8.&CI( TOP EDGE COHN. AO ADDRESS RJ @----~ 26c~~ 82418 51 50 I lP AO r_(&;f~--:----_-J_-::::J. _________L ~ - __J___ 82 49 48 42 41 2' r~- - ~.~,-:--r~17 ---- <10 )6 r - ~I '"'j' ----------!______,___-jii'~ f[C s ~c_<,_,16'------1-- JS H R2 v::;f IP CO R9 Bl ll a >()VI 1dfil-,------------------------- - - ~ 8370 CONfi. 20 f--"-'-'-'------4----l------~<'>---'\N'----&-- - - - - - - •• ~ ZERO OUM I I 0 E I I I I I I I I I I I I I R25 ' - - - - - - - - e ~ - - - - --- I Z£Ro OtlM F _ c AS I I I " J • I I I ll ...• NF I I I I I I I I L I I I I ' pp 00 R6 A SUPPLY _ tl5VOC IN FROU CAR SPACE POWER SUPPLIES ZERO OHM VIA CAROF llE WIRING A •l!>V -------------------·-------~---------------------------------. -NOTE.Sr 1 • I ~v OENOl£S co ..u::m roR MIHUS 15 VOLT "A" SUPPLY PLUS ANO ANO FOR PLUS S VOLT SUPPLY TP f241 2, • ll[ POIIH l. 0 TUARE T 82-41 4.R[LAY I PIH I IS COIL PLUS. PIN 16 IS COIL MltlUS 5. All RESISTORS 'AW 51 CARBOH ura (SS OlHEAWJS[ UOH.O, TP IAMI-' N211 f 241 82-41 --·------•-'I,•----------·--·----·-----------------·-----------------------------------~~------------> BL lP v-418 82418 IAMP 624 IB --------------•·L------·----- ---------·--·---------------~---------------- -----------------4-------=-"--""'-----l' 89 TP y41A 82-41A IAMP FROM INTERFACE POWER SUPPl l[S VIA CAROf ll[ WIRING 8241A ·---···----~-------------------------------------------------._-----"'=-=----~ BK -------·----------------•L,•-----~-- ------·-- I I I CAR SPACE A00/1:ESSING PCB « 111 r~,.,.11 1,c l'fltll1.rn • ,...,i.11A11t,o111- 11,c. lt<JIOllwllUu<.. ,1.-n..io i , '""',. 11'1 ,t1t.lMlll,(-III-· .. Piton .. \Hllllf, f• NI.Ht! II t~I\ ""''""'•' ""'IU too•ll'!a JI II.Cl. •l,otl IN ..... II . . "'" e,o1..,..trt - hC ............ H ,...,_ .,II --~f . IU (111,11"11 .... - II fl( 1'10 • !NOH t• .., - · UU•<Ull1•1 ..., ... I • Pl"'O Ill' ICII .... IIOI II N <""Ill. -~111((,;((0, tr,., ... , too, ..... Dfl . , _ . Clf l•fl.tl •II•'"' HUN •lllh :~:'R9-';"'-,-o-,-_-.-..-,--' fl£F£fl£NCES ::~..·~-ttH~ lft•ctD GTR .. -26-93 UJl93100-00J9 Aolo<.,ess P.cB. m I SCHfMA..'OC :c: 1· !!!C,.co._ PJJ..=_[=z:~:..9ii31--------------------4------L.---~ t41 "'. 4"' t "'IC.111'1.-CIIC' ... ll""WII W:11 ..111*" .. ,1 .....1,C llffP .. >'I .... ll.. l(l, 1,C """"'' ,.., hC , ....... 111 " " ' " " .. u .. ,.,_, ,.,, u...: ..1111 u, Clf•uul l,UIIH• ,t, • ,.,., ...11111 •MC•-• MhHt t r l h l l ... , !UT IUl ,oiu- ... o 1, •• ,., .,.,.., 2-25-93 --- UNION SWITCH 8 SIGNAL INC, Pl ITIBURGII, PA 15111 ~ I I 8 gl i' .: I I ~------------------------------------------------I ... I ':: g ::: "'"' g ~ ~ ~ ! 'f • "" " REVISIONS I EOGE CONNECTOR: I '1, JP2 '1, '1, '1, I TP O TP ,.15V O OHM TP O +15V I I 27 R56 OHM 1 ~ . . ": I BO I . I I lP I 2~ •9 I l;; 815 I II :fi I -o I ljl ~ ce, ca2 I caoi } c1a lie,, I I e<• a:-i ~ ~ IOOPFJ. IOOP•J. ,J;,OOIUF -,ioo,urJ_· '"' ,J;,OOIUF-15t001UFJ.·'"' : I JP) 17 v lv7 7 2-25-93 AS INSTALLED . n n ~ ~ _. .. PtN 37 PIN D STYLE 44 PIN EDGE CONNECTOR GTR- ,~ TP 23 ,v.h i- AJ An~ /t 0 C42 C-40 C38 --------------1 CHANN£L I: .,s I I TP 26 O TP OHM 22 ,.l!,V j = = • •ii :£ I '7" ;l: C39 o, . ;;; C37 1QOP< T T-001ur -1svT.oo,ur T. ,u, l:1 v -& 7 R"40 ~.. TP ': I w -& TP • I 5V ': I I: CHANNEL AZ BO I~ " '= A32 JPS "" ~ :, IOOPFT V V V V V •1i5v ~... s. --..tv j I V JP5 VV' vvo OHM CHANNEi. "~ 45 1ooP'" j lvvv A9 vv A2 i: c O j JPG ' w 0 I ~ Iv I I· 2 ' C20 v I 1T 1I ' ·1 1 1c• i 6 , .• ~ n c,s vv ..e r • i •i R27 3. 32K I ~l •:l " 4C' J r-1_ _ _ ,_ _ Mi· ~ ~ - v, c,. rI I 0 - 0 · - Ah: ; lvv r-II I I I I I , .0 :~ I · ~ 2' co ~ b 1;. . r.o 1< 1~c~ C9 iIi; C5 C3 I: l01 999 I I 50 .... , N"400S F ~ I I ;! ~~~ . 1'l,48010RJVER.UF ~ ' A20 AX I ' !02 ,2 I l T I C3.. .OOIUF .... C32 L2 1N•OOS 50 lot< l r ,oou, T .OOIUF' C33 r .._ C31 IOOUF' ! TO ALL CIRCUJTS •15V TP ·.; 20 lP • ' ~ I ~7 2 ~ : I >---"---<;---- 'hI 1IC14 1;;; 'Bil ; J ~s3o m c10"' - css / T.oo,ur -15v1.oo,u, T.,u, 3 • ; v-&vl TP CHANNEL e3 1 z N I 0 6 1Cl3 3• ~-~ «! ;; •i5'Y ~ Rt09 J.32K ~1 - :: , :;; I;;; ria• f ~ 020 = c11 I _ c••"' - c61 j IOOPr T j-OOIUF -15V,.OOIUF' JUF 1 v'¢" vvvl en I O OtHr,t R88 r, TP R92 3,l2K I ~ ••• ;.;2, 1 37 ' vv ~l~ ~~! .. ! 5,V TP 35 I 2 ' 1' cs, _ T IOOPF' CHANNEL 84 3 ~ 11_ci~ C62 v7 I I 6 v, f •L, j.OOIUF' I i r--;j I O , • s1 I it c•o , 1 1 -1svT.001ur r C~B .IUF' l,----,s2• j ;;c I 7vvl TP I . ~i ~ , · Bri :! R93 ea·1 - - . ~- .,- 0 3.32K 0 :-& ! i I 6 m 4 ;;; cs."' 100Pr,J. r ~ I 1c&, I csr ioo,u,-,sioo,urJ/"' 3 cs3 t CHANN£L BS ~ I 2 !Cl I 3-32K R91 •15V 3: 65 ;;:; s24 t: ;: : -----------------,I TP 33 O OHM R72 TP 2'3 , I I ! .,. CHANNEL BG ;:::=::=4 ~ I I ~ W j • :: 83 ~ ~ 822 f vT v v vT. I -----------------, I I I m~ t ; 17'¢'7 j £ TP 3e2 . B•I . 6~ • 3, 32K ~ ~ +15V l ~~I ""'"l I'c:2 • cso~ . I: R76 C54 (,0 O R69 WOHM R75 3.32K JO R7T 3.32K ~f ~- 0- l7vv I l C53 100P, T ~ w IUF ~ ! CHJ.HNEL 87 i 6 I' 11~' - ;. -1svT.001uF TP 2!8 TP i!\I -, r-OOIUF IO()Pr i C51 fl ;::; ~ a20 "';;; ~ C'9"' ;:; Bl ! C41 T,001ur-,s+oo1u, T.,u, 7v I ~ v-&vl ------------------, NOTES1 I. JC PINS I. 5, 8 8 NOT USED, 2, JC REQUIRES PRESS ON HEA.T SINK. 3. THIS PCB HAS 4 CONNEC:TORS1 J PSC ;;; I CMANNEL B2 ~o RBS ../V~M Al ~ r 1 T 3.32K TP B~ 420 I 1• 1 O TP 3'9 \_, JP• 8J' I • -----------------, J: I l3 AZZ I v-& Rio~"' ~ $ j : i : j lvvv CHANNEL AT C1 • LI I - I O OHM +15V I 1 1 6' ! 1.5 Jul> ., -. C6 :;! C8 - Fl ~ ~- :J: IT t I ~-----------------, I I I ( r--------------- "'> • lJ !1,igl -:0 I r-l I -0' 1 N - j 1'i/1 31 RII 3.32K - JPI •15V j ~ Rl3 3.32K- ~, c1, 100Pr RIOT r I ,-------.t T" -~~ W lvvv O OMM CHANNEL •6 I 1,v,hI =-f;;; ·n ~ ~ t IOOPF T j.001ur-15Vi-001ur T .,u, lv7v -&v '¢"v 44 A5 .l2,4 -& .,sv ! . 1lV•h 1 ~· 3 ~1~ =:_.,,_ ... i ~ :~~ ;~~ -& R5 g,.M ~ f '/ Cl3 roOPrJ. _J;,oo,ur -•sioo•u•.J;•ur lP d I I Cl O ~ RI0;-"3.32K .. TP Al4 3.32K -~; , - - - -- 1 • •a' I - w il CIS -&v O TP !PR80MMz I !;;; ; Ii ,b.i ---- Cl7 ~ 813 '¢'~vi TP .. , RIIO 3.321\ <!) 100P• T T-001u, -1svT.001ur T. ,u, :;! lP 1 3 Cl9 Iv'¢" v I • lP 36 _L___J ) I l.;,~~r _,q_~,9u: T .c,':, I O OMM RICM BK. JP7 : vv I s, vvvl l 1· i;,,;h •• "" ~~ TP c n ~ 1 1 I AZ• T ,IUF' j.001ur:-1svf.001ur O OHM • i r, - - - - - - - - - - - - - - - - , ~ I I O OHM ·r'" l 10~; lvvv ) ~ ;;; 'r c,e IOOPf" CHANNEL. U I ~I r ~ I j • I 5V R28 3.32K 'VV' R3o 3.32, ' f ·,~ 1~1 ~~I~ j,,4 TP ! ~ ~-1 s; ! ~ vv71 TP 8@! R:Z::M I 0 ',. I I I 8 ;; ~;;; - TP 45 ¥ r • ----------------, sc' r--------------~ TP ~I TP I C23 j T-ooiur -1svi.001ur T .,ur I C29 CHJ.HNEL BI ~~- I - ··.:'"1 l' en'1-i c,;=~"'~- '! : ' ~I ~=~!!;t m=~ljl TP F, ··~ A[ 1 ! ~ J --'VV ·1' •'1 ' = '= ~ g-~ :g-~ a~ I °' I « I ----=i '1 •15V 4.6 l v v -& 63. ' I -----------=i T; I R37 ;i . O OM..i I I I SN R46 3. 32K J ~i r I I '¢" r--I 3.32K R44 r :~ f I I I TP O Rl23 3.32K TP 48 Al) -----:::i r--------------- TP TP ~OHM R59 3.32K 0 - l. 1,i;,,;h . i I -----------------,I O OHM CHANNEL Al ---•-----1----~ .I R61 3.32K AH • B•1 WI'-' i -:n:i 1~; I lP 24 R53 S RIZ6 3.l2K ,\)4 r-------------I I I ... CONNECTOR B CHANNEL AO TP I I 37 PIN O STYLE CONNECTOR A r-------------I I I - TO ALL CJACUlTS PSC. :no M.At.E CONNECTOR A. TOP FRON'T 370 MALE CONNECTOR B BOTTOM FRONT 4.:1 PIN EOGE COHH(CTOR A. TOP REAR ANALOG COl,NJN OR POWER SUPPLY COlt,l,()N 44 PIN £OGE CONNECTOR 8 BOTTOM REAR ; I I ! ; I I ;:; I "' 0 10 ALI. CJACUJTS -15V :::; t: I-----------------------------------c1\dgn\a1.sfhd•\1.J,486\dt-1Y9r •• ~f 20-JUL-1993 131 I~ ~ ':'A.ROS / GTR --------------------------------------------------------- SECTION VII PARTS LIST 7.1 GENERAL When it becomes necessary to replace components during unit maintenance, the following procedures should be followed in obtaining replacement parts: a) Standard Parts II electrical and mechanical part replacements for this unit can be obtained through your US&S local Field Office or Representative. However, many of the standard electronic components can be obtained locally in less time than required to order them from US&S . Before purchasing or ordering replacement parts, check the parts lists for the value, tolerance, rating and description. NOTE When selecting replacement parts, it is important to remember that the physical size and shape of a component may affect its performance in the instrument, particularly at high frequencies. All replacement parts should be direct replacements unless it is known that a different component will not adversely affect system performance. b) Special Parts In addition to the standard electronic-components, some special components may be used in this unit. These components are manufactured or selected by US&S to meet specific performance requirements or are manufactured for US&S in accordance with our specifications. These special components are indicated in the Electrical Parts List by an asterisk preceding the part number. Most of the mechanical parts used in this instrument have been manufactured by US&S. Order all special parts directly from your local US&S Field Office or Representative. c) Ordering Parts When ordering replacement parts from US&S include the following information: 1. Unit nomenclature. 2. Unit serial number. 3. A description of the part. 4. US&S Part Number (Uxxxxxx-xxxx) p. 7-1 7.2 PARTS LIST ILLUSTRATIONS The following parts lists are provided in the order listed. Figure Description Page Phase Detector PCB Component Layout and Parts List 7-3/4 7-2 Driver PCB Component Layout and Parts List 7-5/6 7-3 Address P.C.B. Assembly Component Layout and Parts List 7-7/8 Track Transformer Assembly Component Layout and Parts List 7-9/10 7-1 7-4 7-5 Wayside Transformer Assembly Component Layout and Parts List 7-11/12 7-6 Car Space Rack Assembly Component Layout and Parts List 7-13/14 p. 7-2 0 [ (: c c; c c II " .. " J J uC " c Ill Ill J J ( "c " . ... "' "'c c uC • J J c;"' [ ''j ~ ::J ... [ llt IIJ J Ill me "' t' ' 0 \ .,,/ IU '" ·- !Cit ,_ _, ICII c c 1n ::1 J ,. , ~=!... 'c,, r :J 'hJ c"'::J '-r,, t':, ... , (l I' '\ \. CJI /lJ c: ::J C:J r1 .,-__! '"' CH "' t "' c '"c 0 \ / "" ,,, .,, ,,,.. r ~ ~ t' ''-r,r' c3 ... _. ,';?, ~ ..{ G,r1 ...... "' .. , "" ~ 3 s.~ ._ _. " ' o ,I' ',, '-r,, c jJ ..... ·;~: " " C:J ::J mt ."', c ... [ J u•c J o/:- t "' c ::J [' :J "' r'!:i t__ ' / lJ t__ r;, ,...~,---... '"\ ,,, ~..~ rl ,. '\ ' , /ll "' 11 1111 ~ t_ C:::J "" .., ~~ t' "' - . ~ 111 111 c ::J 1111 "" '\ rl 111: '" . - ·~ ..,. ...c :Jr , 0 \ L_ \. /ll ---- J - ~u ~ u 0 c -,• " "1 ..T\- .. _\I L I iT -n :JIJt" c :i,,. Ill~ ~-1 :J C :I I Q,r11 =u l J,,. Mn •• 111JIJI" c: fl ; "'0' < rl O =ul Jm tpU ., ----- - - •c":i.,, ' J ;[ j !fu11... ,,r l O '"' i c ,.. 1 J ·u~l - l'1:'i j j ~[ L-, ___J "l~ tu J ;( L_ if-(. ~UJ)ut =ut Jm ;f1' l Q i c ___ c :J::i.,, =ul Jcu ... - - - - - ... :J c 1,. "" ,n( ,,t --!'--------.. ------.. . ,. '" ·.,A • •[ l ~.~ ;"\llm ,'.'.'.) , r! :::J ~ _ _.... ~ '-- ,?,, \ / la,? \. / l J c'!J ,,., "' t'!J ICU ... r- • ~ )",rJ. 11 1 . . "'o r ''-r,r ~.--41 "" ' ,, G,r1 ' /lJ . r ..... ''" .,:· C::J ,_ ...... lllff I' '\ c, \. /lJ "l=i ·t tH 11 1 ,_ .., "'' .. L_ ltt Ill ) .. .. ____:----r-"Tl1T---:------;:-, UI lllf ( r-L_r , ~ Ill /'11i1-..., mJ C :J (l ~ ,11,,~n Q,rn i c :.1.,,=ul lco : m~O -l~ .... ,?., ' ., G.r1 ' / lJ C::J C :J C::J rlen' r:• J ,- • ., t' ' '-r,r" UI [ ( ,~ c "' . "'tic [ c J t' 'c:: . ·~ IC I "ti[ c "" eC1 ) i (l t1Ju1:;n 0"" c: ::> =ulJ.,. 1 1 - - c ::i 1111 " ' • c :i l"' )i lfi,il.., :;n r ,., ::,0 < O .,,. c: :> =ul J ·--c ::i.,. ["1 ",' ii,feu :nf _ -~r,?, , • o ::, '~ lb:) r?\\_~!.:..\) ,.Ut,) IPJI 11 ,u, :=n n =u ~ 1 ----:....-__._ _ - AA COMPONENT SIDE Figure 7-1. Phase Detector PCB Component Layout and Parts List p. 7-3/4· .... \' • , I .. ,-$ _' ) L ',(/ /~]ff:~~ 1Mn,1nt\ .... !:, ;oJ f=tl ~)\~[} ffe!N. or '-'""ct -- (!f,) l\,:1- -~~.~ rfL, _: ----+------::~~~~~~~~~~-=~l .--- -__1-::_-..._-_-_-_-_-_-_-_-_-_-_.' 1010-vSIISvMn . ...- d]V'HJOJSNV~l _1__ l)N\ldn08 >\:)Vtll Vl(W 8, \H(IWIU~ tMl\O\SCt) NOM[Utl .... Tune .. ,m:.t: \!\ PUS,(M ;l 01• uou, \ncr I -- --- - -- --- - - - - \ \ I r{tlY-;-;{,.-------, r®---, r. ==:: ,r_-_---_1 I I - \ 1 11 ' ' ,1 t, 1,. _ _ _ _ _ _ _ _ _ I I I I ~-=-=::-;, --- .; - - -- - ii---- -:. :-~ S:,~------ -:<-__ ~ · ·0·'I /·~· ·r;\ ~'/(I, ~I i I l ,, ':(' ·....--r--~-,("~'-tJ •S ~ ,(.... / '1 I I I ~ ' ( ;;;..,·-, 1 j :: ~· Lt::::::;i:==::~:::=:..:-::.~.::~::::~t=:!=I 1 -r- /1 t.lM. rl-,-- ) , '\t}rr · · ' ;1'11~~-=--------= 'f~===i I I s I 1 I ~ ~ J , _ _ _ _ _ _ JL ·1 I r-- -j L---, I . l, ~t r=,=~-==--l.. N I l--~ '. j~__J _____ ,~'-·--------~ --- : t~'-·- :-±1======:~=:3.-\-----L------------------------------------ l} "'"· ,-,~ _, _ _, _______] - J·is] E•s-l 111 IJ JJJ IIIJJ rfTJ"JffTfrl fff 4 IP ti' - - - - - - - - - ft~ ~~t~r·-------------~I 0- ST.,AT ( lf"-0 rlH1,11 lt>-D )------- Figure 7-4. 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OB TIE 1 Cl'l'5L ':-______ I Uayside Transformer l\ssernt:,ly Component Layout and Parts Lisi e.7-11/,2.. -------------------1 II ll IJ 11 15 16 17 IB 25 PART• 2G 21 iO 2'1 30 JI 32 33 31 35 36 30 37 3~ 10 11 12 13 11 15 16 11 w I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I ..J ([ MANUFACTURER D!STR!OUTOR o MANUFACTURER H 4 w 0: us J709004 N451056·5501 8, s us &s 5 217 CR92Y04002 CR92Y04002 LAMBDA 6 2CJ9 C NUMBER NEEDED SPECIAL ORDER lt'!EDMULLER 7 317 8 316 CJ SPECIAL 2 ORDER NIA 337 20 10 338 3 FT. CR91Y012297 II 264 4 N308947 ·001 NIA SPECIAL onorn 24 SLOT CAR!lF !LE II !TII BUSS BAHS. PCBS CALLEO our SEPARATELY ENGR. DEPT. 12 339 20 NIA 800102-05 CGP-2 23N365CJ us &s EOU!PTO CR9IY012105 ee 340 22 ENGR. DEPT. CHALLENGER fOUlf'HENT RACK. 36 IN. DEEP WI PLEX DOOR ENGR. DEPT. RACK NAME TI\G (CUSTOMIZED PER RACK AS llEOlJ!llEOl 9 CIIAllACTER ENGR. DEPT. MAR·Pll!JOF SCREW (EOUIPlOl 10BX5IB IN. ENGA. DEPT. 14 341 22 80-0401 -03 EOUIPTO J475121 ·0111 US!,S ENGR. DEPT. SPEED NUT NUTS FOR 108 SCHEii J48021 I -0108 EE 342 FF OG ,., 22 (l'. w :J o a w u (l'. (l'. > H w w J475120·0112 N ~,I BULK j 1'I iil ii iI II BULK ------------·--------! US!,S 1/4-20 NUT lJS!,S BULK --------------·------------------------------1--- -- ----+----114 PLATE WASHER BULK ·t--t---1----'---l---l.--:l---l---'1---------L------ - - - - - - - - - - - - - - - - - - - - · ~ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - t - - - - - 16 343 22 J50013G·0112 US1"S BULK l/4·20Xll2 IN. SCREWS ---------------~-----!----}---- ---lc--+--+--l--+-+---+-+--+-+-------11------1------- 17 121 N451441·3101 18 122 N451441 ·8'102 US1"S PIIASE llEfEC!OR f'CBS ENGR. DEPT. US8,S CARSPACE DRIVEll PCB DEPT. -!-------· u UJ793100·0019 US1"S ENGR. ------------------·------------------·----------! ENGH. DEPT. CAHSPACE AO[lflESS PCB -----~-------------------------·----! - - ! - - . - - - + - - - - ·t---+---t--+---l--l----lf---1-----11----1-------1------ - - - - - - - - 20 124 N451441·1101 US!.S ENGR. DUAL EX TENDlfl PCB DEPT. _..__...,.____,__..,_____,'----'-----'----'---'--------l-------'---·--·----- - - - - - · - - - - - - - - - - - - - - - - - - - - - - - - - · - - - - - - - - ' - - - - ' - - - ' - - - - - ~ - - - - - APPTAB-CARSPACE SYSTEM 00 l'lf; ~ I t 1t• ....ua WIIOt • \1"""- 1111:. !tVU-ft.11 ..... _ 1 . .13 II 1'I, . . M JU1•1oa _ u , .... , IQ IIRUI .. i.,1, tll;UCJ<I - lft Dllo,U,lt d •K01U••aonll'Ol"ll111t_,,1,1111ca."111t1tU1'~at,.lfllllll-lhll '"' ........,., "...., ..,,._,., • 1nm.1i.reH1. ...-nlll'I or•1t11 tt• lo!- - 1 1 l>OlielUUl -HotN ,,a.11WIICIII- . . 111110. II.FU'•• •7"D,,(.d.11SJlll#lt01>U111t1111-aUl't&lrt•1no11Cr11,. .. 11Tlll "'-IOl"kJIC.111Qf,CC11n,HlllfMIIOllntltW.•!1•v,flll:"•«-ftll. llt' u,on,u - If•""'' ....,. Ml . - u 1 _ .... Ill' . .16f ..... 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DEPT. 36 PIN CONNECTOfl. ---,f---+---1--+--+-+--+--+---+-+---------<f-------t-------~--- u e2 !------------------·-----------------+---+---!---+----- N451056·5501 125 01 w w w }::J m a TERMINAL PANEL WIHI T\10 80Al1flS PER GllOUP UN377777 UN377777 321 us "' s SEE ORAIIING F80094 Sil 5 FOR DETAILS ---<--+--+--•-->--+-->--+--~-+-------'------~I------~---.~=-~------------------1 CJ -IIAY 36 P1t1 CONNECTOR PANEL. M451075·5701 M451075-5701 us 8, s SEE DWG. 451075 Sii. 57 4 ea 0 0 (J) D!SlR!BtJTOR IH 1- PART • l- 11 ORDERED DESCRIPTION Vl:NOOR 0 us &s 1e 5H K 7002 ::~_~_::_-l-.~~-fB~~Lt-1:l:ON::.:.:.::S_V_IT-CH~~~-J...::::::::'.'.:::lt=::::::~ ~ ,PIHS!UIGII, SIONAL PAINC. T 14 96 "",,.,., 15237 I I I I I I I I I I I I I I I I I I I I \ . ..f . ,·, ~· L----------------------------------------------------------~ ~--------------------------------------------------------~-----------------------·------- -------------- 77-13/14 )