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CONTENTS Page Title SPECIFICATIONS 1 OVERVIEW ........................................................................................................... 2 PRODUCT PARTS LIST ........................................................................................ . 3 CASEWORK IDENTIFICATION ................................................. . 3 PCB LAYOUT ...................................................................................................... . 4 PCB PARTS LIST ................................................................................................. . 5 PCB SCHEMATIC DIAGRAMS ............................................................................... . 7 KEYBOARD MATRIX ............................................................................................ . 7 I.C. PINOUTS FOR UNCOMMON CHIPS ................................................................. . 9 RF MODULATOR 251844 LAYOUT ....................................................................... . 11 251844 SCHEMATIC ................................................................... 11 RF MODULATOR 251311 LAYOUT ......................................................................... 12 251311 SCHEMATIC ................................................................... 12 iii/iv SERVICE MANUAL MODEL PLUS 4 COMPUTER Preliminary OCT. 1984 PN-314001-04 Commodore Business Machines, Inc. 1200 Wilson Drive, West Chester, Pennsylvania 19380 U.S.A. Commodore makes no expressed or implied warranties with regard to the information contained herein. The information is made available solely on an as is basis, and the entire risk as to quality and accuracy is with the user. Commodore shall not be liable for any consequential or incidental damages in connection with the use of the information contained herein. The listing of any available replace- ment part herein does not constitute in any case a recommendation, warranty or guaranty as to quality or suitability of such replacement part. Reproduction or use without expressed permission, of editorial or pictorial content, in any matter is prohibited. This manual contains copyrighted and proprietary information. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of Commodore Electronics limited. Copyright © 1984 by Commodore Electronics Limited. An rights reserved. PLUS 4 PRODUCT SPECIFICATION MEMORY 64K RAM. 60K RAM User accessible for BASIC programs. ROM 32K ROM Standard iincludes operating system and BASIC interpreter) with 32K additional ROM con· taining the built-in productivity software. MICROPROCESSOR 7501 Microprocessor - .89 or 1.76 MHz clock. DISPLAY 40 Columns x 25 lines of text. COLORS 128 Colors (16 calors; 8 luminance levels). CHARACTERS Upper & lower case letters, numerals and symbols. Reverse and flashing charachters. All PET graphic characters. DISPLAY MODES Text characters. High resolution graphics. Split screen text/high resolution graphics. Muiticolor graphics. RESOLUTION 320 x 200 Pixels SOUND 2 Tone generators or 1 Tone and 1 white noise generator. VOLUME 8 Volume levels KEYBOARD Full size typewriter style design KEYS 67 Keys total. 4 Cursor control keys. 4 Programmed (reprogrammable) function keys (up to 8 user defined functions possible). Col or control keys. HELP key. Upper and lower case character set. Graphics character set. INPUTS/OUTPUTS PLUS/4 MODEM (User) port. Serial port. ROM cartridge and parallel disk drive port. 2 Joystick ports. C1531 Cassette drive interface port. RF Output-channel 3 or 4. Video output-composite/ chrominance/luminance. Audio input/output. Power supply input. 1 PLUS 4 PRODUCT SPECIFICATION (Continued) FEATURES Built-in extended BASIC 3.5 - over 75 commands. Built-in Machine Language monitor - over 12 commands. Built-in graphics and sound commands. Screen window capability. Reset button (Warm start). Built-in integrated productivity software. PERIPHERALS C 1551 Fast Disk drive, C153 1 Datasette, MPS 802 Dot matrix printer, MPS 803 Dot matrix printer, DPS 1101 Daisy wheel printer, C1802 color monitor. OTHER PERIPHERALS C1541 Disk drive, MPS 801 Dot matrix printer, C1702 color monitor. PLUS 4 OVERVIEW The Plus 4 system is based on the 7501 microprocessor, an HMOS version of the 6510. Video processing is achieved by the 7360 TED chip. 64K bytes of dynamic RAM are accomplished by 8 (64K xl) LC: s. (See page l. The system program is contained in 2 (16K x 8) RaMs. The system supports up to 1 28K x 8 of ROM banked in 16K sections. By software control, through the 7360, ROM can be completely banked out and RAM banked in for a true 64K of RAM (minus 256 byte pages), allowing 60,671 bytes available for BASIC. Keyboard and joystick scanning are accomplished by outputting the row data on the data bus while addressing a particular register in the TED chip. This will in turn cause the TED chip to latch the column information. A standard serial port supports serial bus peripherals such as the 1541 disk drive and the various serial printers. A cassette port is provided and the expansion port supports ROM cartrdiges. TTL serial ASC!J is intended to drive an RS-232 adapter. 2 PARTS LIST PLUSf4 TOP CASE ASSY Top Case Keyboard, 67 Key, KKR-l Nameplate Shield Clip, R Shield Clip, F C C C C C 251453-01 251501-01 251655-01 251855-01 251856-01 C C C C C C 251454-01 950157-04 310156-01 310199-01 310197-01 310198-01 C C C C 310196-01 310157 326189-02 904778-01 BOTTOM CASE ASSY Bottom Case Foot, Self-Adhesive Paper Shield Shield Chip Shield Plate Insulation Sheet ACCESSORIES Users Manual Power Supply RF Cable Switch Box c ~ Commodore Stock Part '" M 0 ·2 • , 0 • ,,• ~ • •• 0 •• 0 " ,, o o > 0 ~ g • <• m u • ••o 0: , I.. @' ®, @' @' • ~ , " ~ ~ = ~ [ "0 • ~ ." ® o "" I@' ;'" ~"I "" I@' I@' I~, ,," "" c::::::ti!.C] @, , 10> " CW o ., [ 1 "" > ., ,• o ·• ·• o un :~... .. ..'" .,,", 0- Issue 6, 1984 Computer 3 Model: PLUS 4 (:: TECHTOPICS commodore i" \980 CO~1MODOPc IlUS'~fS5 MADIIt<.f5 ,~..: Troubleshooting Aides NOTE: Visual inspection is critical in this unit! The upright position of many of the components used on the board can create problems. It is possible for them to be shorted to the shield or to each other. Make sure they are evenly spaced and do not contact the shield. Areas of the peB particularly vulnerable to this problem are: Bottom right corner - caps Bottom center - Jl-J6 Bottom left - Q3 shorted to FB57 Top left - ferrite beads Center - Twisted caps (just outside of RF can) 1) NO VIDEO - Absolutely no video on screen A) Check for 5 volts O.K. If not: 1) Check fuse 2) Check for twisted or bent caps v ( 5 v. short to ground 3) Check Ll B) Check for oscillation at pin 14 of Ul O.K. If not: 1) Check for good connection at pin 14 of Ul + 2) Ch ec k fo r good connect ion at RI thru R7 Cl Check for LUM signal at pin 23 of 01, at pin 4 of the modulator, at pin 8 of the modulator, at FB3 and at pinl of eN7 O.K. If not: 1) Check for- LUM signal shorted to ground + 2) Check for open traces 3} Check modulator D) Check for reset O.K. t E) Check for control signals: Signal AEC AEC CAS CSl CSl CSO CSO 1. C. Ul U2 Ul Ul U20 Ul U20 Pin 35 4 11 6 15 5 1 Signal R/W 0 MUX IRQ RDY BA RAS 1. C. Ul Ul Ul Ul U2 Ul Ul Pin 7 12 9 8 2 34 10 PLUS 4 Troubleshooting page 2 2} BAD VIDEO - Scrolling lines on screen - Random blocks on screen - Blurred display A} Check JI-J6 for shorts to ground or each other O.K. t B} Check reset for correct operation O.K. t C) Check Ul for proper operation O.K. I f not; 1 ) Check socket for good solder 2) Check for bad Ul t D) Check U2 for proper operation O.K. I f not: 1) Check socket 2) Check for bad U2 t E) Check RAM data lines for correct amplitude O.K. I f not: 1) Check for hot surface of RAM 2) Jump out RAM to verify t F) Check multiplexers U9, UI0 - signals at RP3 and RP4 should be similar in frequency and amplitude O.K. I f not: 1 ) Suspect U9 or UI0 t G) Check ROM for chip select signal at pin 22 of U23 and U24 O.K. If not: I} Check for signal generation + at U20 Hl Check that all ROM addresses are present and correct amplitude O.K. If not: 1) Trace problem address AO-A15 t I} Check U19, U23, U24 by replacement with known good 3) NO POWER A) Verify voltage +5 1) 2) 3) 4) and +9 volts Check for shorts to ground Check switch Check power supply BAD BASIC - Random characters on screen - Random colors - Power-up message is missing A) Check Basic ROM U23 B) Check B thru I above (Bad Video) PLUS 4 Troubleshooting Page 3 5) NO CaLOR or BAD COLOR A) Check Ul pin 14 for 14.31818 MHz with frequency counter O.K. If not: 1) Check solder joints of CTl and adjust for correct frequency + 2) Check crystal, Ql and Q2 3) Check clock circuit for opens or shorts BI Check Ul pin 13 for Calor Out signal. O.K. If not: 1) Swap Ul w/known good + Cl Check modulator Ml pin 5 for Calor In signal O.K. + and pin 6 for Calor Out signal If not: 1) Check Ml operation DI Check FB4 and CN7 pin G to see if calor signal is present. 1) Check for shorts 6) NO SOUND or BAD SOUND A) Check Ul pin 33 for SND signal O.K. If not: 1) Check socket for open circuit ... 2) Swap Ul w/known good 8) Check audio circuit for short to ground or loss of signal. O.K. If not: 1) Check Q3 - Be sure emitter and base are not shorted to 5 V. + Cl Check modulator Ml pin 2 for SND signal 1) Adjust LF. can (top right of modulator) for clean, loud volume 2) Ml pin 2 to ground should read approximately 480 ohms 3) Check Ml for component failure 7) SERIAL FAILURES Al Check FB23-26 for shorts to shield or each other 8) Check U7, U2 and CN2 PLUS 4 Troubleshooting 8) page 4 KEYBOARD FAILURES A) Check pins on ribbon cable for good connection O.K. t B} Check for shorts - CN5, CN6, FE's, Diodes O.K. t C) Check chip select to U27 and the I.C. U27 O.K. t D) Check Ul for proper operation O. K. If not: 1) Check socket 2) Check for bad Ul t 9) FAILURES IN SOFTWARE MODE - All units should be checked for proper operation, when any repairs are necessary. To Check: 1) Press 'FI' on keyboard 2) Press 'Return' to enter Word processing mode 3) Press 'Commodore' key and 'c' key at the same time 4) Type 'tc' and press 'Return' to enter Spreadsheet 5) Press 'Commodore' key and 'c' key again 6) Type 'tw' to return to Word Processing mode Watch for video or loading problems, then: A) Check jumpers at JI-J6 for correct connection O.K. t B) Check Ul, U2, U25, U26 PARTS LIST PLEASE NOTE: PLUS/4 peB ASSEMBLY #310163-01 Commodore part numbers are provided for reference only and do not indicate the availability of parts from Commodore. Industry standard parts (Resistors, Capacitors, Connectors) should be secured locaJly. Approved cross-references for TTL chips, Transistors, etc. will be available in manual form through the Service Department in November of 1984. Unique Of non-standard parts will be stocked by Commodore and are indicated on the parts list by a "C". INTEGRATED CIRCUITS Ul U2 U3 U4 U5 U6 U7 U8 U9-10 U11-18 U19 U20 U21 U22 U23 U24 U25 U26 U27 DIODES (Continued) Icont.) 7501 Custom Microprocessor CR1l-20 C 251536-01 6551 A (Synertek) 901895-02 74LS08 901521-03 65298 Single Port Interface C 251640-03 74LS04 901521-02 7406 901522-06 901523-01 555 74LS257 901521-57 4164-2D-RAM 901505-01 7700-010 PlA C 251641-02 74LS139 901521-18 74LS175 901521-34 74lS27 901521-22 23128 ROM TED Basic C 31800B-Ol 23128 ROM TED Kernal C 318005-04 23128 FUNCTION ROM, 3+ 1 LOW C 317053-01 23128 FUNCTION ROM, 3+HIGH C 317054-01 B5298 Single Port Interface C 251640-03 TRANSISTORS 01-03 04 2SC 1815 2SD 880 Tip 29A 2SD 1266 ?V,: S~ 902693-01 902694-01 Sub: 902653-01 Sub: 902694-04 Rl R2 R3 R4 R5 R6 R7 R8 R9 Rl0 Rll R12 R13 Rectifiers DBA20C 251026-03 Zener RD 6.B EB 900927-01 IN 914 Sub: 900850-16 IN 4148 Taping 251819-21 Sub: Diode, IN 4148 900850-01 AU values are in ohms-1/4 W 5% unless noted otherwise. RESISTORS - R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 R25 4.7K 10K 470K 220K 18K 1.5K 470K lOOK lK lK 12K 10K lK 240 250 lOOK 1.5K 47K lOOK 3K lK lK lK lK lK RESISTOR PACK RP1, 2 RP3, 4 3.3K, 6 PIN B8, 8 PIN 4 ISOLATED Cl C2 C3 C4 Elect Ceramic Film Film Ceramic Elect Elect Ceramic Trimmer Ceramic C5-C6 Bridge Rectifiers S2VB10 5indengen 215026-01 Sub: Bridge Recitifers DBA20B Sanyo 251026-02 Sub: TI,'OT=~ CR2 Bridge Sanyo Diode, Diode, Diode, 902441-29 326149-06 CAPACITORS DIODES CRl CRl 7360 VLSI, Text Dislay (TED) Sub: C 251535-01 8360 C 251535-02 I BEVF:VF: tJ24 SHOULD Pl:~?_D C7 C8 C9 ClO Cll C 318004 0.1 0.1 /IF 25V /IF 25V 0.22 }IF 100V 0.22 }IF 100V 0.22 /IF 50V 2200 /IF 16V 1O}lF 16V 0.1 /IF 25V 40 pF 22 pF 50V 900100-40 251075-06 900150-11 9OO15Q--ll 900022-01 900101-33 900100-25 251075-06 251029-02 251070-14 r~ 5 PARTS LIST - PLUS/4 PCB ASSEMBLY #310163-01 (Continued) MISCELLANEOUS (Continued) CAPACITORS (Continued) C12 C13 Cl. C15-C16 C17-C18 C19 C20 C21 C22 C23 C24-C26 C27 C28-C29 C30 C31-C32 C33-C40 C41-C51 ClOD Ceramic 220 pF 50V 251071-26 Sub: Ceramic 220 pF 50V Ceramic 150 pF 50V Sub: Ceramic 150 pF 50V Ceramic 0.1 ~F 25V Ceramic 0.1 ~F 25V Ceramic 10~F 16V Ceramic 0.01 ~F 25V Elect 10 ~F 16V Ceramic 0.1 ~F 25V Elect 10 ~F 16V Elect 1 ~F 16V Ceramic 0.1 jiF 25V 10j1F 16V Elect Ceramic 0.1 J.lF 25V Elect 10J.lF 16V Ceramic 0.1 j1F 25V Ceramic 0.22 J.lF 25V Sub: Ceramic 0.22 /LF 50V Ceramic 0.1 /IF 50V Sub: Ceramic 0.1 /LF 50V Ceramic 0.1 Jl.F 50V Sub: 900463-08 251071-24 900462-41 251075-01 251075-06 900100-25 251075-01 900100-25 251075-06 900100-25 900100-16 251075-06 900100-25 251075-06 900100-25 251075-06 251075-07 900022-01 900020-06 FB2-14 FB15-21 FB22-26, FB28-38, FB40 FB41-58 FB59 FB60 FB61-63 FB64-65 EM1,2 EMI Filter CNl Connector 4 PIN (power supply) C 251614-01 Connector 6 PIN DIN (serial bus) C 903361-01 Connector 7 PIN MINI DIN (cassette) C 251616-01 Connector 50 PIN Female Edge (exoab) C 251630-01 Connector 8 PIN MINI DIN (joy 1 & 2) C 251259-01 Connector 8 PIN DIN (audio/video) 325573-01 Connector 18 PIN (keyboard) C 251841-01 CN2 CN3 CN. CN5-6 CN7 9000010-01 900010-20 CN8 Ferrite bead Ferrite bead 325563-01 903025-01 Ferrite bead 325563-01 Ferrite Ferrite Ferrite Ferrite Ferrite 903025-01 325563-01 903025-01 325563-01 903025-01 bead bead bead bead bead 251842-01 MISCELLANEOUS Yl Y2 SWl SW2 Ml Crystal 14.31818 MHZ 251081-01 Sub: Crystal 14.31818 MHZ 251081-02 CryStal 1.8432 MHZ 900555-02 Switch, Rocker (PC Mount) Switch, Push Button C 251587-01 RF Modulator Sub: RF Modulator C 251844-01 C 251260-01 251311-01 C - L1 L2 L3,L3 Fl Noise Filter Line Filter Sub: Sub: Coil Inductor 1.2 uHpt Sub: 251264-01 906127-01 251701-01 Fuse 250V 1.5A Fuse Clip Cartridge Guide Shield Box Shield Cap 903556-18 906102-01 310171-01 C 310172-01 C 310173-01 901152-01 325570-01 Commodore Stock Part 6 1. 17 RE. 13 8 6 2 16 9 RUN 5 CD 1 CLR CTRl STOP SPACE C. Q 2 3 W A SHIFT Z S E • 5 R D X C F T 6 7 Y G V 8 H U 8 9 I J N M K 0 0 (i) {I P L @ <- • . 11 10 @ DEL 18 ~ RETURN ~ ; , / Ese - + '" @ f1 12 13 HELP KEYBOARD MATRIX A2 Al M VOO ~OIN Roy IRO AEC VCC A Al A2 A3 fi 1 2 3 4 5 6 7 8 9 A4 10 A5 A6 A7 AB A9 Al All A12 A13 GNo 11 12 13 14 15 16 17 18 19 20 7501 40 RES 39 R/W 38 O~ 37 01 36 02 35 03 34 04 33 05 32 06 31 07 30 -,·P0 29 Pl 28 P2 27 P3 26 -P4 25 P5 24 P6 23 GATE IN 22 -A15 21 -A14 PIN ASSIGNMENT U2-251536-01 CUSTOM MICROPROCESSOR CS~ CSl R/W IRQ MUX RAS CAS <1>0 COlOR elK IN K~ Kl 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 K2 K3 K4 K5 K6 K7 - 22 SYNC vSS 23 24 7360 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 -A3 -A4 -A5 -A6 -A7 -A8 -A9 -Ala -A 11 -Al2 -A13 -A14 -A15 -AEC -BA -SNo -07 -06 -05 -04 -03 -02 -01 -o@ PIN ASSIGNMENT U1-251535-01 VLSI, TEXT DISPLAY (TEDI SHIFT LOCK SW - , ~ ~ 'r. - ~~ ~: ~. I~ ~~ . -- 0 > > ~" --"j. ,. g ~ ~ ~ 8~ G:s ~ ~ c.,~ -> 'fl'.1.1 .~-(" " ~ ~ ,I ~~ ~ ~ ~~Pf ~ ~ I '" 2 , u '" I" . ~:~ • " , '~ :7 ~ ',> ~ • " , 'il' I I ". • la~s 0 ," < S3 J ~J ~ ~I . ~ ~~ ~ ;] ~ . . .• ~ ~, ~~ 0: ~ ~ ,I , < I, ' I"I, v u v < •• ~ lee ; ~ ;, . ~: ~" IV Il '" Il •, ". . 01'"' > • J ", ~" ,. ~ -::~c -,. '" F" ~ ID ~Cl u I )"11' ~ ,~ ~!~ ~HI~ ~ '" , C?, < &~ ~l c~ ;;:'" of , -." I~ o 2YI' 8 >1 1:: '" " ,I;; I· " ~ ' .. " .<! ~l:! ,~ ~ ~ 10 I: I. " ~ , §I l§1 ~I gl J <>: 15! 1 ~f," : 02 : ~ ~ ~ « .. « .. ~ ~ ~[ " - '::! ,... ~ N ~ 0 V < ~ ~; •I• ~ l ~ :~ :;t ~ :: -.. ; ~, ;; ~ rf i'1'j1 " ~~ ~ . ,! .... §( ~'J;; I ~" !-~1--. '7'1 ~ ~ }'S=('I ~k'J ~ < 0 e '''-" ~ ::: j:£ ~}-11' , .... "' ~I,! <. 3 ~~ u. : ~ I~ > = ~ ;iI~ III ..::;,: ,iC:!1> :fi ~ 0 8 , -~ w ~ ~I~ . -11' El, 0 ~, 0 ~:;'~ ,~ < & " 91" 8= ~ .0 -'; : < Il .. ~. ~ , •. ~ t~~ - , '--- 1:<>-1" ~"l ," ... - ~ 1 . ,... ~ zZ ~a. SO • ~ _: ~I! 3" u M1 SCHEMATIC ON PAGE 11 TRANSMIT/RECIEVE CHARACTERISTICS PIN CONFIGURA TlON VSS CS0 CS1 RES RXC XTL 1 XTL0 RTS CTS TXO OTR RXO RS0 RS1 - 1 2 3 4 5 6 7 8 9 10 11 12 13 14 6551 28 27 26 25 24 23 22 21 20 19 18 17 16 15 CHARACTERTISTICS -02 2 MHZ SYM MAX MIN -R/W -02 -IRQ -07 -06 -05 -04 -03 -02 -01 TRANSMIT/RECEIVE CLOCK RATE TRANSMIT/RECEIVE CLOCK HIGH TIME TRANSMIT/RECEIVE CLOCK LOW TIME XTL1 TO TXD PROPAGATION DELAY RTS PROPAGATION DELAY IRQ PROPAGATION DELA Y ICLEAR) -00 -OSR -OCO UNIT • tCCY 400 - ns tCH 175 - ns tCL 175 - ns tDD - 500 ns tDLY - 500 ns tlRQ - 500 ns -VCC Itr, tf ~ 10 to 30 nsl * The Baud Rate with External Clocking is: BAUD RATE U3-901895-02 ACIA _--,1_ _ 16 x T CCY 1SYNERTEK 1SYP6551 A 12 MHZ PIN CONFIGURATION PIN CONFIGURATION FE 17 16 15 14 13 12 11 10 F7 F6 F5 F4 GNO - 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 CS R/W 00-07 L L DATA BUS TO PORT -110 -111 L H PORT TO DATA BUS -112 H -VCC -18 -19 X ISOLATION 22 -113 21 20 19 18 17 16 15 U19-251641-02 PLA -114 -1115 -CE -F0 -Fl -F2 -F3 L H X ~ ~ ~ LOW LEVEL HIGH LEVEL IRREVELANT MOS R/W P0 - Pl - P2 P3 P4 P5 P6 P7 VSS - 6529B U5/U27-251640-03 SINGLE PORT INTERFACE 1 2 3 4 5 6 7 8 6529 9 10 3 MHz 20 19 18 17 16 15 14 13 12 11 -VOO -CS -DB0 -OBl -082 -OB3 -OB4 -OB5 -OB6 -OB7 "l,l .".11 " I.~~~ lll'-4 (OlOR 'NO 1 c::;. = r I~!f •.ov r- I .sv "'1 I 1<1] III t 7 LUM IN (OWR IN cUt..! OUT r 4. I COMn", 1 11 J7 "A2 LLJ' . ,., 3 COlOR OUl " CND l ~ M "A. COlOR A1 N~T[ A8 1«.,.. Irl~1 111~ 2.q~.fL +~ ~2r J '''''Pi' >l15 24Q.n. 1 " " ICb'!'\ "'" h: ~. " 11.31e18 f,lHl '-J15C ~.l,',~f'cM:' r D Cl ~ CH •.,\I'p[ I".P' "4.7K 'qAl _ *" 733P[ c,' 1.2,...11 r-., Ql !":'o D4 [ D, "" Dl Q' 25C18'5 7 .L. ~ .... 2 in > " ~; I~ 22Ql.n- 4 C51 SENSE ~ eST MTR • 9V I 0--.,.----, ~5V REG 0ll:lQ1 liT 1.1,t.,MP c", 1 2 1\ FBI3 --- T 0-10 I Fll1E~ - I , j [.>.1,1. J . 1#f- POWER --. I " 1 LINE FlL lER a. " CB • .,,./ 3 3Il . ij''''>1 u A _I.'V 1 I '.L1 17 c=> fBI5 RAse: ~o c' FBI" c:: ~.«,..T - + J " i9 18 17 '" il. " Z , § ~ m is " -+ WU I ''''''AI C D c HIGH e ~ C2 1..0"'" c..:;,- 1 C2,"IGIoI L:>- 8 , c:::>- ~= == c::> = ",n --.T ,. 13 BA ~ , +5Y 2 (°'"'"1" ,, 12 IW cc " • fBS!!o "~" Ne c::::>------C:J- T.IC~ f Plus 4 Schematic #310164 (2 of 41 ~B "" ~ n z " • " " I.1UX AEC ~ r •5 z"z "'" R!W =c:::>c::> -::- ~~~EG I ~,~ ~~--!---!_O ~ l±J~'J ',~ ~ rrrnL~'-~I;;-t-'--T-1 1 \' -•• - SAE5E"T 'hAC A55Y K 9 L ? PIN DIN q"C I'tl.C!MC I~ Z 25D8811J w.~~~ I ."y J I o.'jy c:::>- ~ I~ r-~-----"1 11 Cl LOW CSI ,BII e51 RD (ST WRT c c N 1.3 '.. 5K ,. p R P '. _D2_ _ -sv l5Q f T QP- !!J. (lK IN U , " 1. CI<..L . ,1,-( ,e --Y " 25(1815 L (15 t-------c=> ~:~I~f! 1 J1 .1,..1 " 41~.f\. W V CAiS '13 'I, ,sv 47<2.IL , "l RI(/, _ 11)4 K.f\. I, I "". '" '" C2~ Q3 l'~ 1211 '" 4 5 I -L 25CI815 -. '~~f MI SEE Iq~ ---, RF DUT--...J 'B RI2 t 1~~K _ ec MODULAlUR j t: SND ~:'" 1<9 11( I 7 ~'5'J o-------flII BB Z~ PINOUTS ON PAGE 8 ·11 COMMODORE RATION VENDOR PART APPROVED SOURCE PART 1 CYCLES POWER Ins) ACTIVE (MWI STANDBY IMAXIIMWI NUMBER OF SUPPlY 901505·01 HITACHI HM4864-3 200 335 330 20 901505-01 NEe pPD4164-2 200 375 250 28 901505-01 MITSUBISHI M5K416NS-20 200 330 275 28 901505-01 MOSTEK MK4564N-20 200 345 300 22 901505-01 OKI MSM3764-20 200 330 248 23 18 ....IIC RAM 901505-01 MICRON TECHNOLOGY MT4264-3 200 385 300 30 5-01 901505-01 HITACHI HM4864P-3 200 335 330 20 901505-01 MATSUSHITA (PANASONIC) MN4164P-20 200 330 275 27.5 901505-01 SIEMENS HYB4164-3 200 330 150 20 901505-01 SHARP LH2164-Z1 200 330 248 28 901505·01 HITACHI HM4864AP-3 200 330 242 20 901505-01 TOSHIBA TMM4164AP-20 ZOO 330 275 22 16 15 14 13 12 11 10 9 ~VSS ~CAS ~DOUT ~A6 ~A3 ~A4 ~A5 ~A7 ~I~ l .TOR - OCK \TOR __ - . 1£ :z: (J) I i ~ CC (J) ARRAY w CC u. w CC w (J) I~ 1 L w 0 w ...i (J) 0 (J) ::J ::J Cl U Cl (J) ~ MEMORY ARRAY Z w DEC. g w 0 ...i 0 (J) w ROW DEC. --- (J) (J) . (J) le MEMORY <l: :z: ARRAY (J) w L--. OATAIN BUFFER DATA OUT BUFFER -0 DIN f-o DOUT ~ VCC CC u. w CC ~ MEMORY w ARRAY (J) Z w U <:: r--~ ~ ROW DEC ---'"" VSS -1VBB GENERA (J) u (J) (J) 0 ~ :::; ROW f::: r--u (J) ::J a: ...i 0 u ROW DEC. <l: MEMORY (J) w t MEMORY ARRAY 0 le w u. u. III t w MEMORY ARRAY - - , • u OCK .TOR f--- I R/W SWITCH: t - - NUMBER ACCESS TIME (nsl MEMORY ARRAY w 0 ...i 0 MEMORY ARRAY u i FUNCTIONAL DIAGRAM QA PI , I w 0 • , " " It- . !1 rH!' ,b ~f ~ 24 PIN MALE £0(,£ . • = I ~~ ~''7 . I~ i7 • 1-,. ~" iJ (H"~ ~ 1 z~ Q< ". a~ ~ = ! . J ri'I_ 01 ~~ ;Iit D. ~~ ". ~Ih 05 ~&~th D' ~~ ~, ~~ §If.;~ 9F----- E ~ , , « ,~ ~< 0 ~ E " d. ,,. " 0D J Q Q- I~ ;F.-! " I~ 0 Q ~ Q I~ ~~ 2 :; 0 "- 0 ~ " ~ .•" PIN CONFIGURATION NC - A12 A7 A6 A5 A4 A3 A2 Al ArJJ 01 02 03 GNO - 1 28 -VCC 2 27 -CS, 3 26 -A13 4 25 -A8 24 -A9 5 6 23 -A 11 7 23128 22 -CS, 8 21 -AlrJJ 20 -CS, 9 10 19 -08 11 18 -07 12 17 -06 13 16 -05 14 15 -04 U23-318006-01 ROM - BASIC PIN CONFIGURA TlON NC - A12 A7 A6 A5 A4 A3 A2 Al ArJJ 01 02 03 GNO - 1 28 -vcc 2 27 -CS, 3 26 -A13 4 25 -A8 5 24 -A9 6 23 -A 11 7 23128 22 -CS, 8 21 -AlrJJ 9 20 -CS, 1 rJJ 19 -08 11 18 -07 12 17 -06 13 16 -05 14 15 -04 U24-318005-04 ROM - KERNAL ,,- (!l o 0 !i:~ ~ J-''a ~ ~~i 15 ~ ; ..H~, o;q .... o;:;,~~ .§ - -I l ~~~~ " n .. } HI. J <5 0 13 • .: .. Oi " ~~ JI ~ ~1 ,"'- f-11-~'---------" ~ ~~ 1~, I - r- ~~)~IJM'·lJfRlJ*.JJJffim'~mm-''W--ffio"- I I' - J bJ ~- - l' }- 2 L" - - - I- -" - 1" }- (! I • 0r-~r--I" I rf-1 " I " o , . " I~;; I . f"" , I J~ - - - -: --; - _, - - - .!- ___ _ ; " - J I- LI ( I QI 22r JJof' --- COLOR. IN . """.. ~7!; ~" ~ '<- "''".,., LUH IN DI Gj "'L s. ~4 "- Th 1 us 2>0{' C4 U ~;A ~~ CJ pT .jjOP eOLOR oUT ~~ ~ C('lj .,~ ~- -"" /.20 cS (SOP .,.. 3VP >-{) ,,~ Lun OUT (OHP OuT ~. ':). ,,"l. ",'1. 1?l8 ~,"'J<:-/(J* 1;60 TB crop ;;..7k ~14 ('8 S60 47o:::nP l4 H)L~ ,,<;; §'" C6 Clit RIS RlJ ~~ c9 22P ,it J3P c;;- 8~ ~Q3 SP "" "l!~ ",; " 11;,'; AUDIO IN "" C21 /0.« C20 .220>1 ..,s 6.8k. 04 ; : " m J.jl<-4.2~ LS ~(!J 2Jf' .l2P ;;. 8 1<23 .2.2k ~:~ ':~ t vl(-/ u:[ $$1 ~ Dj p en /SI' ~,:- <),. "< "~" N C,. 3J? TOP VIEW ~ L7 .. ~ " " ~I J?F OUT ...~ "" 04 sf-/, .;;- C22 ..... ,2(, ~ ~.81C "DP COMPONENT PART8 VALUE: R = n, C Q3. Q4: 28C460 OR EQUIVALENT. Q1. Q2: 28C1684 OR EQUIVALENT. 03.04: 188198 OR EQUIVALENT. 02 : 188110 OR EQUIVALENT. 01 : 188119 OR EQUIVALENT. e2j <rJ' / PHONO JACK/ '"" I e/8 09? NO. RC~ 0 L6 ~ ~ 1<2/ 68 -/$0 C/9 ;.2OP CH~ D£ TAIL (CH. SN) = F. L TERMINALS 1 N.C. 2 AUDIO SIG. INPUT 3 +B 1+5V) 4 SYNC + lUM. SIG. INPUT 5 COlOR SIG. INPUT 6 COlOR SIG. OUTPUT 7 COMPO. SIG. OUTPUT 8 SYNC + lUM. SIG. OUTPUT 9 RF OUTPUT 10 H CHANNEL SELECT SW. REAR VIEW RF Modulator Lavout and Schematic #251844 11 II Cl --- .>:sOP .. Q~ 221' COlOfil. ,N ., .." -~ Lilt? IN .... "'<; ~~ '<" ~ /)1 ~ '"'" .... "4 So .,!\ ~ C2S :;.20{' !Z, ~/~~ c" J~OP COLOR OUT ~l ('4 ... ".. '20 CS UP ,,~ -<If ~20P ~ ~ ,~ LUN oUT CONP OUT "'a ", ~~ ';!~ ", Rfa ""."!JI!:_/Q,t "'J S.., ;-B IV4 C'8 ....c9 $"60 47<XXJP L 4 1~ ~~ " H~ CoS "tI:Op L I?2J 2.:U. A.UDIO IN CLo 22001' 5~ C2, FOP = '"" CtlJik "~S 22P :J..7k cro Sf .."'".. ,j3P -" Q3 CI(,.... ~ ,"- UP ('-.. ii< Dj :~ Lt ~ t f'J ,t~ ~ ""-/ '$;f P en ISP "-if'.L6 M Cl' e/8 .llP J1p : I~t ~ <22 .... m J.Jj(-l.2~ ..,•, ~ ~ ::• I?F OUT I ." ~ " J'6~ 04 "KIJ, COMPONENT PARTS VALUE: R ~ O. C Q3. Q4: 2SC460 OR EQUIVALENT. Ql. Q2: 2SC1684 OR EQUIVALENT. 03.04: lSS198 OR EQUIVALENT. 02 : lSSl10 OR EQUIVALENT. 01 : lSSl19 OR EQUIVALENT. 1t21. ...---. CLj ("'" / TOP VIEW R2/ ~6-ISO 8 6.11< 1.3 I( JACI'V J.? , ~~ <.; 221' NO. ReA . .GHONO C,9 /,20P CH 4. -iff+ -----t-- (H.3 DLTAIL (CH.SN) ~ F. L TERMINALS , N.C. 2 AUDIO SIG. INPUT 3 +61+5VI 4 SYNC + WM. SIG. INPUT 5 COLOR SIG. INPUT 6 COLOR SIG. OUTPUT 7 COMPO. SIG. OUTPUT 8 SYNC + LUM. SIG. OUTPUT 9 RF OUTPUT 10 H CHANNEL SELECT SW. REAR VIEW RF Modulator Layout and Schematic #251311 12 Issue 7, 1984 Model: C16, PLUS 4 Computer 4 (:: TECHTOPICS commodore LINE DEFINITIONS AO to AlS AEC ATN BA BRESET Cl HIGH, Cl LOW C2 HIGH, C2 LOW CAS CLK IN COLOR COMP CE CS CSO CSl CST MTR CST RD CST SENSE CST WRT CTS DBO to DB7 DCD DRAM DRAM ADD DSR DTR EXT AUDIO GATE IN IRQ KO to K7 KERN LUM MUX PO to P7 RAS RESET RxC RxD R/W RTS SND TED TxD f 0 f2 Address Bit 0 to 15 Address Enable Control Attention Bus Available Buffered System Reset External Cartridge Chip Select " Dynamic RAM Column Address Strobe Master Clock (Single Phase, 14.31818 MHz) Chroma Output Composite Chroma and Luma Chip Enable Chip Select Low ROM Chip Select High ROM Chip Select Cassette Motor Control Cassette Read Cassette Sensor Cassette Write Clear To Send Data Bit 0 to 7 Data Carrier Detect Dynamic RAM Dynamic RAM Address Data Set Ready Data Terminal Ready External Audio Input R/W GATE Interupt Request Keyboard Latch 0 to 7 Kernal ROM Control Line Composite Sync and Luminence Address Multiplex Control Port Bit 0 to 7 Dynamic RAM Row Address Strobe System Reset Receive Clock Receive Data Read/Write Line Request To Send Sound Line Text Display Transmit Data System Clock (Varies between 1 and 2 MHz) Artificiall2, Address Valid Rising Edge, Data Valid Falling Edge