Download (D rrloNEEFl` - Creapromedia

(D rrloNEEFl'
ORDERNO.
ART- 678-O
STEREOCASSETTETAPE DECK
lr
rl
f.-r
MODELCT-5COMESIN SIX VERSIONSDISTINGUISHED
AS FOLLOWS:
Type
I
I
Volatge
Remarks
KU
1 2 0 Vo n l y
U.S.A. model
KC
120V only
Canada model
HE
22OY and 24OV (switchable)
Europe model
HB
22OY and 240V (switchable)
U.K. model
HP
22OV and 240V (switchable)
Australia model
D
12OV,22OV
and 240V (switchable)
General export model
This servicemanualis applicableto the KU type. For servicingof the other types,pleasereferto the additional servicemanual.
For the mechanism& circuit descriptions,pleæerefer to the supplementof model CT-5 servicemanual
(ARP-002).
Ce manueld'instructionserefèreau modede réglaç, en français.
Estemanualde serviciotrata del métodode ajusteescritoen espaffol.
CONTENTS
1. SPECTFTCATTO
. NS
....
. 2
2.
FRONTPANELFACILITIES
3.
DISASSEMBLY...
4.
PARTSLOCATION
5.
E X P L O D E D V I E W S A N D P A R T S L I. S
. T. . . . . . 8
6.
PACKING
.....3
9.
S C H E M A T I CD I A G R A M
21
10. PARTSLIST .
......4
24
11.MECHANICALADJUSTMENTS
......
27
al
....6
REGLAGESMECANIOUES....
14
7.
BLOCKDIAGRAM
8.
P . CB
. OARDCONNECTIO
DN
IAGRAM....
......
15
..
17
t
AJUSTESMECANICOS
12. ELECTRICAL
ADJUSTMENTS
at
29
.....31
REGLAGESELECTRIOUES...
,
A J U S T E S E L E C T R T. .C. .O S
.......
33
37
4.1
't-chome,
4-1, MesuFo
Mesurc-ku.
Tokyo 1s3, Jep€n
PICINEEF|
ELECTF|CINIC
CCIFIFOFIATICIN
1J.5. PlCt lEEFl EL.EgfFrcI\laCB
OG'FIPC'F|ATIGIN 85 Oxfond Onive, Moonactrre. New Je€ey
O7O74. U.S.A
(EUFICTPEI
IIICINEEFI H.ESfF|CINIC
9, 2O3O Antwenp.
Belgium
N.V. LuiÈh€gen-Hêven
FfCINEEFI ELEgfFrclNlCA
AUBTF|ALIA
FÎY.
L1E. 178-1EJ4 E}oundary F|oad, Ê|neesrde, VEÈonia 3195, AusEnalE
YP
@MAY
198I
Printed in lapan
1. SPECtFtCAT|ONS
Specifications
Systems
Motor
Heads
Miscellaneous
compact cassette, 2.channel stereo
DC servo motor x 1
"Hard Permallay" recording/playback head x 1
"Ferrite" Erasing head x 1
F æ t W i n d i n gT i m e
Approximately lOO æconds (C€0
tape)
Wow and Flutter
N o m o r e t h a n O . 0 5 %( W R M S )
Frequency Response -20 dB recording:
Normaf , LH tap€s
20 to Î5,OOOHz
......:
Chromium dioxide tape
Metal tape
Signal-to-Noise Ratio
Dolby NR OFF . .
Dolby NR ON
(30 to 14,000Hz 13 dBl
20 to 17,OOO
Hz
(30 to 16,000Hz !3 dBl
(0 dB recording;30 to 8,0OOHz)
20 to |8.OOOHz
(3Oto 17,q)0 Hz 13 dB)
(0 dB recording;
30 to 12,5O0Hzl
More than 50 dB
B Type more than 68 dB
C Type more than 78 dB
(over5 kHz)
Harmonic Distonion
No more than 1.2% (0 dB)
I n p u t ( S e n s i t i v i t y / M a x i m u ma l l o w a b l e i n p u t / l m p e d a n c e )
MIC (L, R) . . .
0.3 mV/57 mV/10 ka,6 mm
diam. iack
(Reterence MIC impedance;25O n
to 1OkO)
LINE (lNPUTl x2
. . . . 50 mY/22Y11C0 ksl, pin jack
O u t p u t ( R e f e r e n c el e v e l / M a x i m u m l e v e l / L o a d i m p e d a n c e l
LINE (OUTPUT)x2 . . . . 450mV/50kO,Pinjack
Headphones
. . . . . 65mV/160mV/8O,6mmdiam.jack
Subfunctions
o
o
o
MS (Music Selectl system
REC muting switch
Dolby NR B & C system (B & C, ON/OFF) with LED indicarer
tamo
o
o
o
.
.
.
LED peak meter
A L C ( A u l o m a t i c l e v e lc o n t r o l )
One touch recording system
Stand-by mechanism with unattended recording
A u t o t a p e s e l e c l o r .( N O R M / C r O , / M E T A L )
Full automatic stoDmechanism
. Noise Beduclion
System manufactured
under license from
Dolby Laboratories Licensing Corporatron
. "Dolby"
and the double-D QQ symbol are trade marks of
Dolby Laboralories Licensing Corporation
é
Power Requirements
AC 120V 60 Hz
P o w e r C o n s u m p t i o n . . . . . . 23 watts
Dimensions
420 (Wl x 99.5 (Hl x
Weight (without pækage)
1 6 - 9 / 1 6( w ) x 3 - 15 / 1
{ D }i n .
4.5kg (9 lb 15ozl
(D) mm
x 9-9/16
FurnishedParts
Connectioncord with
pin plugs
Operating instructions
2
1
Note:
Specifications and the design subiect to possible
without notice due to improvemen$.
NOTES:
1 . R e f e r e n c eT a p e s :
2.
3.
4.
5.
7.
8.
9.
Normal & LH: DIN 4551
e q ul v .
CrO, DtN 45S13/BLATT
eoulv.
Reference Recording Level: Meter OdB i
nwb/m magnetic level = Philips cassettereference
R e f e r e n c eS i g n a l : 3 3 3 H z
Wow & Flurter: o JIS [ 3 kHz, with accustic
(weighted) rms valuel DIN [3,150 Hz, with
p e n s a t i o n ( w e i g h t e d )P E A K v a l u e l ; D I N 4 5 5 0 7
Frequency Response: r Measured at -20 dB
N R O F F , l e v e ld e v i a t i o n i s 1 6 d B w i t h o u t
Signal to Noise Ratio: o Measuredat the third
t o r t i o n 3 % l e v e l ,w e i g h t e d ( D l N 4 5 5 1 3 / B L A T T 7 l .
Sensitivity: Input level (mVl required for
l e v e lw i t h i n p u t ( R E C ! c o n t r o l s s e t t o m a x i m u m .
Maximum Allowable Input: While decreasing se
(REC) level controls and increæing level at
is the maximum input level (mV) at the ooint
amplifier output waveform becomes clipped.
Reference Output Level: Playback output
i n d i c a æ s0 d B .
TT6 or
2)
or
(160
ton
com-
DOLBY
dis-
Input
this
2.FRONT PANEL FACILITIES
indicator
OPERATION
OÊoN€m
AUTO TAPESELECTOR
indicator
POWER indicalol
D O L B YN R
B/C type indicator
t
are tr
Oolby Laboratories
@ uustc sEARCHswitch
(! POWERswitch
Push this switch to turn on or turn off oower. When switch is
depressed power is supplied and POWER indicator lights. When
switch is released oower is turned of{ and POWER indicalor is
extinguished.
@ e.leCf button and cassetteholder
T h e c a s s e t t et a o e i s h o u s e d i n t h i s h o l d e r '
To opsn the holdor: Dopres th. EJECT button.
To closa th€ holdeT: Pu*t the holdr by hand.
@ r"æ COUNTER/RESETswitch
The tape counter indicates the tape's traveling position. Depress
the RESET swilch before recording or playback 10 reset the
counter to "000".
@ tsvEL meter
These indicate the input or output level during recording or
playback.
@ Playbackfunqtion switches
Playback operations can be performed when the sections with
the following symbolsare depressed:
>) (fastforwardl:The tepe runs at high speed from left
to right.
(rewind);
The lape runs at high speed from right
a{
10 left.
(
p
l
a
y
)
:
The tape is played.
>
(nop|:
The tape is stopped.
r
@ Recordingfunction switches
Flecording operations can be performed when the switches
with the following symbols aredepresses:
The tape travel (during recording) can
PAUSE:
be temporarily suspended (recording
standby mode). Depress this swilch
a g a i n t o r e s u m er e c o r d i n g .
REC:
REC MUTE:
The word "Oolby" and 0g
L i c e n s i n gC o r p o r a t i o n
R e c o r d i n gc a n b e s t a r t e d .
This enables unrecorded blanks 10 be
created between programs for convenient play functions (MusicSearch).
Set to ON when automaticallv
Normally, this switch is kept at the
start of a program.
@ trueUflevelcontrols
Theæ are used to adiust the input
with the ALC switch at rhe OFF
controls are linked and rotate
n e l a n d o u t s i d e r i g h t c h a n n e lc o n t r o l s
I during recording
. The left and right
the inside left chanused separately.
@ eLC switch
When this is set to the ON position,
recording is adiusted automatically.
hard to adiust the recording level or
recorded in a hurry.
t s i g n a ll e v e l d u r i n g
when it is relatively
something is to b€
@ tvttclacts
Insert the microphone pluç (L and
r e c o r d i n gw i t h m i c r o p h o n e s .
to these iacks when
@ oor-ay'ruRoN/oFFswitcfi
or playing
Depress this to the ON position
back a tape with the Dolbv nois€
@ oolav
NR B/c type 3elestor
Depress this to select type B or
(The center IB] [C] indicâlorslight in
Dolby NR syslem.
@ ruex FILTERswitch
Depressthis when recording an FM
n o i s er e d u c t i o n s y s t e m .
with the Dolby
6D TIME R start iwitch
This switch is operated for u
usingthe timer.
REC:
For automatically recording
timer.
For when the timer is not
OFF:
PLAY: For automatic playback at
or playback
time
set on
set on the timer
@ exorues;acr
Insertthe plug of the stereo
thisjack.
the
4. PARTSLOCATION
c Parts without part number cannot be supplied.
o The $ marh found on some component parts indicates the importance of the
safety factor of the part. Therefore, when replacing, be sure to use parts of identical
designation.
o For your Parts Stoch Control, the fast moving items are indicated with the marhs
** and *.
**
GENERALLY MOVES FASTER THAN i.
This classification shall be adjusted by each distributor because it depends on model
number, temperature, humidity, etc.
Front Panel View
Function knob E
RAC-176
Knob (EJECT)
RAC-177
Knob E
RAC-194
Push knob B
RAC-I74
Bonnet
RNA-555
K n o b ( I N P U TR l
RAA-364
K n o b( M O D E )
RAA-365
Knob (POWER)
RAC-195
Pushknob E
RAC-192
Indicatorpanel
RNL.34O
Knob D
RAC.193
Function knob F
R A C - 17 5
Front View with Panel Removed
Indicator assembly
RWX.528
I
V o l u m e( l N P U T l
RCV-O94
Jack assembly
RKN.O75
Cassetteplate
RAH-392
tl
Rotary switch
RSBO28
Function switch assembly
I
3. DISASSEMBLY
Do not apply unnecessaryforce to hoohs since this may
Door Assembly Removal
Dolby assembly
+
Door assembly
@
Hook B
S
PanelR
Indicator panel
I ndicatorFânél Removal
FiS.g-t Disassembly
1
panelR pJffi";
panel
BonnetRemoval
Removethe four screwsl).
PanelR Removal
1. Pull off the INPUT VOLLIME knobs.
2. Gently push the hooks A of the panel stay
with the screwdriver
lndicatorPanelRemoyal
Gently push the hooks B of the panel stay with
the smallscrewdriver.
EscutcheonRemoval
Gently push the hooks C of the escutcheon.
MechanismAssemblyRemoval
1,. Removethe counterbelt.
2. Bemovethe six screws@.
Dolby AsæmblyRemoval
Removethe two screws@.
IndicatorAssemblyRemoval
Removethe hooks D and the screw@.
FunctionSwitch Removal
Removethe hooks E and the screw@.
Door AssemblyRemoval
1. Depressthe EJECT button and open the cassetteholder.
2. Pull up the door assemblyand removeit.
Panelstay
Indicator assembly
Function switch assembly
Fig.3-2 Disassembly
2
5. EXPLODEDVIEWS AND PARTS LIST
NOTES:
r Ports uithout part number cannot be supplied.
.
The
I
morh
found
on some component
parts indicates
the
safety factor of the part. Therefore, when replacing, be sure to use
o
designation.
For your Parts Stoch Control, the fast mouing items are indicated
** and *.
**
GENERALLY
MOVES FASTERTHAN
*.
This classification shall be adjusted by each distributor
because it de
num ber, te mperoture, h umid ity, e tc.
PartsList
Mark
No.
1.
2
3.
4.
5.
6.
7.
L
9.
10.
Part No.
Description
RNA-555
RYM-122
RAH-392
RBH-897
Bonnet
M e c h a n i s ma s s e m b l y
Cassetteplate
P a n e ls t a y
Eject spring
RAC-177
RAW-173
RAC-r95
RAA-365
Eject plate
Knob (EJECTI
C o un t e r
Knob (POWER)
Knob (MODE)
11.
1 2 . RWX-528
13. RNL-341
1 4 . RN L.34O
t5.
RX8-600
16.
1 7 . RNL.338
18.
19.
20. R A C - 1 9 3
A
*30
Indicalor assembly
Meter holder
Indicator panel
Door assembly
Switch escutcheon
Function switch assembly
Knob D
21.
22.
23.
24.
25.
RAC.194
RAC-174
RAC-192
RNL-355
RBH-898
Knob E
Pushknob B
Pushknob E
P a n e lR
F u n c t i o ns p r i n g
26.
27.
24.
29.
RAC-176
RAC-175
RAA.364
RAA.363
RTT.237
Function knob E
Function knob F
Knob (INPUT R)
Knob (INPUT Ll
P o w e r t r a n s f o r m e r ( 12 0 V )
Mark
A
No.
Part No.
Jt.
t
A
32.
3 3 . R EC-376
34.
35. RDG{22
(RDG-o30)
A **
36.
37.
3 8 . REC-369
39.
4 0 . RSA448
,î
*t
4 1. R E B 4 5 7
42.
43.
44 RWX-527
45.
46.
47.
48.
49.
50.
RWX-550
R N L-325
RWX-526
R KP.297
Wirenut
Bottom plate
Strain relief
S€rialNo plare
AC cord
Main chassis
Foot assembly
S e n s o ra s s e m b l y
Poraer switch
Counter bell
Vo lume
Jack assemblv
Dolby assembly
P a n e lh i n g e
Mother
Connector
Connector
51.
52.
53. RBA{57
54' vcz30P060FMC
5 5 . vcz30P060FzK
Screw
Screw
Screw
56.
57.
58
59.
60.
Screw
Screw
R ivet
Capacitor(0.01
Screw
VBZ4oPO8oFMC
VBZ30P080FZK
RCG{O6
vcz30F080FMc
6 1 . VBZ30Pl40FMC
62. V P Z 3 O P 1 O O F M C
6 3 . BCZ3OPOSOFNC
UL cord clamoe
Screw
Screw
Screw
of the
identical
marhs
Top View with Bonnet Removed
Dotby assembly
RWX-550
[*
Power transformer (120V)
RTT-237
Motor assembly
RXM.O76
[
* P l u n g e rs o l e n o i d R
RXP-101
Mechanism assembly
RYM.122
l\*
Plunger solenoid F
RXP.lOO
Rear Panel View
P a n e lh i n g e
RN L.325
Strain reliel
REC-376
Terminal(LINE)
RKB-018
-A AC cord
RDGO22
(RDG-030)
2
o
A
o
g
F-
a.t'
97
t
r-
|
o
z'l-l
:
R
D
o
.a'
.'
4
5
6
r05
52
53
74
@
95
5
2
o
6
I
U
A
a
,ki
sill
D
o
1
Botary switch
nut and
o
6
35
-X,-.a
4
163
%-rr I
4l
@
54
6l
c
D
I
I
10
12
11
l_
A
DOLBY AsCy RWX-55O
IC603
VR4OI
vR4O3
rC6O7
RO
VR4O2
TC6Or
Q4Ol
IC611 1C6rO 1612
1609
0501
IC506
IC602
IC60a
IC6@
IP?
o 403,405, 4A7, 503 505,507
1K34aor1K6oa o. oago
*t{;q_
|
B
D
10
11
12
I
7
ilRN À
SENSOR Ass'y
--_-+-DETECTOR
I
lÀDICATOR Ass'y
RWX-528
tl
'rrllr^, l
vt0l
,Æ
rc
2C?
Lio2
ù''.''2
-___a:#lgT1:j
l
;ilî'-'"'
q3rar
13 5
Qré
i.f,c
1::ll1!
_
:i::i
t Q 3 0 22
1-9
lRs l
.{2.?r{
lirt ôa
€i3rn
,r
-?
it
À '-À
i
*,=
TO
'"t9
l
:
|
2
BOARD CONNECTIONDIAGRAM
A
I
B
|)-r
Q7O1-?06 2SC174OLN or 2SC18t5
VOLUME Ass'y
FUNCÎON SWITCHAss'y
152473 or uslo4o
Mark
No.
Pan No,
Description
101.
102.
103.
104.
105.
PMZ20P130FMC
IMZ20Y120FMC
PMZ20P120FMC
YE20FUC
PMZ26PO60FMC
Screw
Screw
Screw
Washer
Screw
106.
107.
108.
109.
| 10.
Washer
Vs20FBT
WA17D032DO25 Washer
PMA26PO40FMC Screw
W421D040D025 Washer
R8F-051
Washer
Mark
No.
Part No.
Description
1 11. RBF-050
Washer
112. PMA26PO40FMC Screw
-
6. PACKING
PartsList
Mark
No.
1.
2.
3.
4.
s.
Part No.
RHA-236
RHG-436
RRB-1
51
RHX-O31
R H C - l1 9
6. RDE-010
Pad
P a c k i n gc a s e
Operating i nstructions
Sheet C
P o l y e t h y l e n ep a p e r
Connection cord
PartsList
Part No.
No.
Mark
1.
2. RBH-820
3.
4. RBH-821
5. RsN-027
(RSN-0101
{RsN-032)
**
6.
7 . RNK.995
8. RE8.323
(RE8-447)
9. RNL.O53
1 0 . RBH.822
*
**
Description
Lock lever
Lock leverspring
Side arm L assembly
Eject spring
LBver switch
Sideplate L assembly
1 6 . RNK.994
17.
1 8 . RAH-392
19.
20.
Guide roller
21.
22. RXB€OO
23. RXP.Og2
24.
25.
Pocket frame
Door assembly
P l u n g e rs o l e n o i d P
REC prevent lever
ChassisassemblY
26.
27.
28.
29.
30.
Half spring
Spring
Half receptacle
Counter belt
Bush
Pocket L
**
**
A*
Dæcription
BNL.O47
RBH.727
RXP.lOO
RBH.122
Solenoid bracket L
S o l e n o i da r m
Brakespring
P l u n g e rs o l e n o i d F
Gear lever spring
**
*
**
**
**
Gear lever
Solenoid bracket R
Drive belt
Drive arm full assembly
61.
62.
63.
64.
65.
RBH.724
RBH.725
RXB-374
RXB.378
ldler pressurespring
FR spring
ldler arm assembly
Reel base assemblv
Brake plate
66.
67.
68.
69.
70.
REB.187
RNK.998
RXB-377
FNK-999
RX8-360
Brake shoe
ldler gear
Supply reel baseassembly
TU idler
TU reel base assembly
71.
72.
73.
74.
75.
RNLO59
RXB-54I
RBH-744
RXM{76
Cam gear
Lever assembly
Lever spring
Motor assembly
Motor
Câssette plate
Spacer
Chrome detector le\rer
Chrome detector sPring
Head base
Bearing holder assemblY
Head base spring
36. .'......
i
Part No.
56. R N L O s l
57.
58. RE8.446
59. RXB-376
60.
Piston
Connection rod
Earth spring
Pocket spring L
Pocket L assembly
31.
32. R B H . 8 1 9
33.
34. RXB.359
35. RBH-779
a*
Qylinder
O ring
11. RBH-795
12. RNL-057
13. RX8-405
14.
15.
FNF-895
RBH.778
RNL.O42
RE8.457
RNH.O31
No.
Mark
37.
38.
39.
40.
RBH'794
RPB-096
Shaft stoPPer
MS Plate
Head base drive sPring
Erasehead
41.
42.
43.
44.
45.
BNLO50
FPB-091
BBH-723
RX8-495
RBH-760
Sub head base
REC/PB head
Head adiust sPring
Pinch arm assemblY
Pinch pressuresPring
46.
47.
48.
49.
50.
RBH-818
RNL{49
RNL{58
RXP-101
Metal detector lever
Metal detector sPring
Pocket R
Pocket spring R
Plunger solenoid R
**
*
76.
77.
78.
79. FXB.SOO
80. R E 8 4 11
Motor pulley
Flywheel holder
Thrust receptacle
Flywheel assembly
Capstan belt
8 1 . RBH.721
82. RXP€99
83. REB.241
85.
Flywheel spring
PMS solenoid
Door stopper
Side plate R assembly
Connection plate
86.
87. RSH-O59
88.
89.
90.
Detector assemblY
Slide switch
Mount plate
Side arm R assemblY
Eject lever
9 1.
92.
93.
94.
9s.
RLB-390
YE3OFUC
PMZ26PO80FMC
vcz26P060FMC
Stopper lever
Stopper collar
Washer
Screw
Screw
96.
97.
98.
99.
100.
VCZ26PO90FMC
ATZ'26PO60FZC
PMZ26P030FMC
YE4OFUC
PCZ26P060FMC
Screw
Screw
Screw
Washer
Screw
u.
M E T A L : 2 6 . 9 m VI
CrO,
NORM
:19 gmv
:18.2mV
NR SYSTEM
T OR E C / P B
HEAO
R E CM U T E
IC 60r (HAil?26)
REC EO AMP
IC609(t/4)
P.B
Ç
FROM TAP€
SELEC TOR
0r09
NC
YY
RL: 50kn
LINE MUTE
r- ___l
I€AOPHONEAMP
o40l
RL:8Il
S3O3 C TYPE
c@
8@
t
METER ORIVE
TO OOLBY_C SW
8TY
Rch
HEAOPHCIIE
6ro(6/6)
ro ruro lEWuJ
coNrRoL
@
ro 00L8Y sw
a
i L E O8 0 8
)
tc 6ro(5/6)
SWITCHES
S 30I : MPX F ILTER
ON _ OFF
S 3 0 2 : O O L E YN R
oil - oFF
s 3 0 3 : o o L E YN R
TYPE A _TYPE C
S 304: TIMER
REC-OFF-PLAY
S 701: ALC
ON - OFF
s 702i |NPUT SELECTOR
L|NE - Hlc
S 703: INPUT SELECTOR LINE - MIC
LEDAO'
(BTYPE)
POWER SUPPLY
s90r.FF
S 9 O 2 :R E w
s903:sToP
S 9 O 4. P L A Y
S 9 0 5 :P A U S E
S 9 0 6 :R Ê C
S9O7R
; E CM U T E
Q3 0 l
ON _
OFF
ON-OFF
ON-OFF
ON _ OFF
ON _OFF
ON OFF
ON -OFF
SgO8:MS
ON -OFF
S I 2 O I :E R Â S EP R E V E N TO E T € C T O R
HOLE-NO HOLE
sr30r:PowER
oN-oFF
SI4OI:TAPE SELECTPR
c'Or - METâL
S I 4 O 2 : T A P ES E L E C T O R
N O R M_ H I G I I
83
B4
F R E O U N C Y: 3 3 3 H 2
st30l
ac 120v
60 Hr
REC LEVEL:160PW8,/MM
7. BLOCK DIAGRAM
:J
LINE
INPUÎ
MPX
FILTER
LINE
r----:7
-Jzoz
o'j olloi*
,z/
'mtcamp1*
I
vR rool
INPUT
rnou xeaoexou@
AIJTO LEVEL CONTROL
l--agoe----i
FLAT ATt,IP
FROM FIEC AMP
(BIAS TRAPI
S--UaeÀ
olot
( REC+ON'
o3l I
( R E C+ O N I
sw
s304 R E C
oofr
FUNcTloilcot{TRoL
@
,l1:
*
s90l s902
REW
CONTROL CIRCUIT
7
-
I
semiconductors are representatiue ones
ternatiue semiconductors may be used and
t parts list
External Appearanceof Transistorsand lCs
2SA1015
r v p eN o
2SC1g15
GP411B
25C2240
2æ,2021
2SA937
zsclT4o
2SC2634
2SC2634NC
2SAt127NC
rYPêNo
hFE
Lot No
Lol No
2SC2060
2SD686
4N6552
NJMII558D
BArfs58
B
hrr
TD62504P
1D€2507P
2SC2673
Lot No
s
2SD837
HAl1226
Lot No
E
rcr .Àrxr
I_l
ocsr4p'n
r
p'4.'
16(r):arclæ
PMg002
2SD1031
Lol No
-
1C40668P
M88'rc668M
HDl40668
HD74LS122
MB74LS122
sN74LS122
2SC1383NC
8A328
8A6124
-
7
I
Lot No
REstsroRs
RES|SToRS
When ordering resistors,conuert the resistancevalue
into code form, and then rewrite the part no. as before.
Note:
Mark
Part No.
Symbol & D€scrption
RDTcPM
Dtrtr J
R S l P Ft r O O J
R701-R720,R723-R735
R721,R722
Whenordering resistors,convert the resistance ualue
into code form, and then rewrite the part no. as before.
Note:
It/lark
**
**
**
*
Part No.
Symbol & Descrption
2SC1740LN
l2sc2021l
(2Sc1815)
(2SC26341
2SC2060
(2SC26731
(2SC1383NC)
o701-o704
8A328
tc701
us1040
11s,24731
D701-D704
ll/lark
0705,0706
**
**
**
**
**
*t
Part No.
Symbol& DescriPtion
RKN-075
Jack assembly
Dolby Assembly(RWX-550)
cotLs
Mark
Part No.
Symbol & Description
RTF-O9O
RTF€92
L4O2, Lû2 Coil (36mHl
L401, L501 Coil (36mHl
Part No.
Symbol& Description
c E A 1 0 0 M1 6
c , 4 o 1 , @ 1 1 , @ 1 3 . æ 1 4 , @ 2 1,
c42A, U34 CsOl, C511, C513,
c514, C521,C528,C532,C601c603
@06,u24, C506,C524
c419, et20, c519. C520
cr',og,c417,C418,C509,C517.
c518
cEA 010M 50
CEA R33M 50
C E A R l O M5 0
coMA 104J 50
coMA 182J 50
coMA473K 50
coMA472K 50
coMA 183K 50
coMA 394K 50
ccDHsL 221K 50
c E A 4 7 1 M1 6
CEA R47M 50
c431, C531
cA27, C527
uo4, c504
c433, C533
c403, c503
cEA R15M 50
coMA 152K 50
CKDYB 222K50
c430, cs30
C435,C535
C434,C436,C536
Part No.
ùmbol & Description
2SA933
(25410151
(2SA1127NCl
(2SA9371
H411226
NJM4558D
(AN6s52)
(8A45581
TD62504P
TD62507P
TC4066BP
(M884066BMl
(HD1406681
152473
(us1040)
0401, 0501
rc601, tc602
tc612
t c 6 1 0 ,t c 6 1 1
rc607,rc608
1c609
rc603-1c606,
D401, D402, D404, D406. D408,
D501. D502, D504, D506, D508,
D601-D608
D403, D405, D407
OTHERS
It/lark
Part No.
Symbol & Description
RKP446
RKP.346
Connector assembly 12P
Connector assembly 3P
Indicator Assembly( RWX-528)
CAPACITORS
Mark
Part No.
Symbol & Description
cEA 100M 16
c801,c802
RESISTORS
When ordering resistors,conuert the resktance ualue
into code form, and. then rewrite the part no. as before.
Note:
c/'og, u12, c425, C426, C504,
c512, C525,C526
c 4 1 0 ,c 5 1 0
c402,c/.16, C502,C516
uo', c429, C505, C529
uo7,u23, c507, C523
coMA 1s3J 50
vR401, VR403,VR501.VR503
Semi-fixede.2k-Bl
VR402.VR502 Semi-fixed(1Ok-Bl
R401-R413, R415-R433,R435-R447,
R501-R513,R515-Rs33,R535-Ril7,
R601-R613
1K34A
(1K60A)
{0A90)
CAPACITORS
Mark
RCP-189
SEMICONDUCTORS
OTHERS
Mark
Symbol & Description
RCP-193
RD74PMODtr J
SEMICONDUCTORS
tt/lark
Part No.
Mark
Pan No.
Symbol & Description
RD'/aPMEtrtr J
RD'/2PSFUtrtr J
R811
R801-R804,R806-R808,R810,
R805, R809
SEMICONDUCTORS
Mark
**
*
*
*
Part No.
Symbol& Description
8A6124
GL-gPG4
GL.gPR4
LN12158P
rc801, tc802
LED8O6
LED8O1.LED8O4.
LED8O5.LED8O7
L E D 8 0 8 - L E D 8 1 9L E D a r r a y
I
DIAGRAM
A
ut'
! :
'
'"
-:ll'
*
'
'î { ''.::i
}
"
!7
D
2
3
4
5
6l
NOTE:
The indicated
only. Other ali
are listed in the
I
oor,@q,d.@
oær,5o2 sa, s3,st
SETSOR a.. t
oN - oFF
ofl - otF
IEE.]q - TYPÊ C
RE6-!f!-PLAY
oi - 8!f
- ffrc
s7o2: rd9ul sElCClOi
tr
s7o3 : rtPuT SEL6C'Oi
Lrf,E- rrc
otr-É
rPr FrLlEi
ssr
æLtY ilR
slo2
SS3 : æLÊY ftI
-l
I
oi-E
ON-98
J
6CrTaOlnd
2!Crara
sr201 ERAS€æVENT ûtECrOR
AO(É - rc @.Ë
oi-E
sr@t
S'O2,
NOTE;
Playback signal route
Recording signal route
4
5
6
: TAÉ
TÂÈ
SELECT@
S€LECTOR
CrO.
rciM
a
-
IEIAL
_
HIGH
1O. PARTS LIST
NOlES:
c When ordering resisfors, first conuert resistance ualues into code form as shown in
the following examples.
Ex 1 When there are 2 effectiue digits (any digit apart from 0), such as 560 ohm
and 47h ohm (tolerance is shoun by J = 5%, and K = 107o).
560fù
56x10'
561......
RDY4PS
E6mJ
47 x lot
473 . .
47htt
RDY4PSEilEEJ
o 5{t
R N ? HO E E K
lçl
010. .
RstPoDOr
Ex. 2 When there are 3 effectiue digits (such as in high precision metal film resistors).
5 62ha
5621
562 x 100
. . . . RN%Sn E6AEF
o The .,., marh found on some component parts indicates the importance of the
safety factor of the part. Therefore, when replacing, be sure to use parts of identical
designation
o For your Parts Stoch Control, the fast mouing items are indicated with the marhs
** and *.
**: GENERALLY MOVES FASTER THAN *.
This classification shall be adjusted by each distributor because it depends on model
number , temperature, humidity, etc.
Parts
Miscellaneous
CAPACITORS
P . C .B O A R DA S S E M B L I E S
Mark
Mark
Part No.
Symbol & Description
RWX.528
RWX.526
Indicator assembly
Mother assembly
S e n s o ra s s e m b l y
Volumeassembly
Function switch assembly
RWX-527
BWX-550
,A
*
A
A
*
A
A
*
*
**
*
Pan No.
Symbol & Description
RTT-237
RDG.O22
(RDc-030)
RXP-Og2
P o w e r t r a n s f o r m e r ( 12 0 V )
AC cord
P l u n g e rs o l e n o i d P
BXP-1oo
RXP-1ol
RXM-076
RPB_096
RPB-097
P l u n g e rs o l e n o i d F
P l u n g e rs o l e n o i d R
Motor assembly
Erasehead
R E C / P Bh e a d
Mother Assembly ( RWX-526)
ANDCOILS
SWITCH
lViark
**
24
Symbol &
c c D S L 1 8 1K 5 0
C E A N L l O O M1 6
CEA R22M 50
CEA R47M 50
cEA 010M 50
c 1 0 1 ,c 2 0 1
c102, c202
c129, C229
c117. c217,
c 3 1I
CEA 4R7M 50
cEA 100M16
c 1 1 9 ,C 2 1 9 .
c 1 0 8 ,c 1 0 9 ,
c l 1 5 ,C 1 1 8 ,
c209, c21 1,
c218, C220,
c323
c E A 1 0 0 M3 5
c E A 4 7 0 M1 0
c E A 3 3 0 Ml 6
cEA 470M 16
c E A 4 7 0 M1 0
c301
c308
c 1 0 3 ,c 2 0 3 ,
c312, C336,
c107, c207,
c E A 1 0 1 M2 5
c E A 1 0 1 M1 6
cEA 221M25
c E A 2 2 1 M6 . 3
c E A 2 2 1 M1 6
c 3 10
c327, C32A
c303
c324
c305, c31 1
c E A 4 7 1M 3 5
cEA 332M 25
c o M A 1 0 3 J5 0
c o M A 1 s 3 J5 0
coMA 223J50
c302
c312
cl05, c205
c l 1 0 ,c 2 1 0
c 1 2 2 ,C 2 2 2
coMA 473J 50
coMA 182K 50
coMA 103K 50
C E A 2 R 2 M5 0
coMA 104J50
c124, C125
c33 1
c322
c307
c321
c o M A 1 0 2 K5 0
coMA 332K 50
coMA 273J50
c329, C330
c l 1 6 ,C 2 1 6
c126, C226
Jack assembly
Dolby switch assembly
Detectorassembly
OTHERS
Mark
Part No.
Part No.
Symbol & Description
RSB-028
RTF-089
RTF-084
RTF-085
RTF-086
Rotary switch
5304
L101, L201 MPX filter co,,
L1O2, t2O2 Trap coil
L 1 0 3 , L 2 0 3 P e a k i n gc o i l ( 3 . 9 m H )
L 1 0 4 , L 2 O 4 P e a k i n gc o i l ( 1 . 5 m H )
RTF-O57
RTD-026
L301
L302
Line coil
OSCcoil
1rc23o
1f0,
1;
. c 1 1 2 ,C 1 1 4 ,
, c127, C208,
, c 2 1 4 ,C 2 1 5 ,
, c309, c318,
"..,u
"f ,.rru,
Mark
PartNo,
Symbol& Description
coMA 223K 50
coPA 332J 100
ccDsL 220K 50
c332
c333
c106,c206
c c D s L 1 0 1K 5 0
c c D s L 1 0 1 K5 0 0
c c D s L 4 7 1K 5 0
C K D Y F1 0 3 25 0
CKDYF 473250
c 1 0 4 c, l 1 3 , C 2 0 4 , C 2 1 3
c128, C228
c121,C221
c306,c317,C318,C325,C326
c335,C334
CKDYF 102250
RCG-007
c304
C316
Mark
Part No.
* WO3B
(w03c)
D303,D305,D307.D310-D313
* 1S2473
(us1040)
D304,D316-D326,
D306
* RD6.2E
(wz-061)
10226.2Al
* BZ-050
( R D 5 . 1 FIB 1
2D301
* wz-073
* wz-040
C a p a c i t o ra r r a y
Symbol & Description
2D302
2D304
2D305
RESISTORS
Note: Whenorderingresistors,conuertthe resistanceualue
OTHERS
into code form, and then rewrite the part no. as before. 111s7y part No,
Mark
Part No.
* RCP-150
(RCP-195)
* RCP-193
(RCP-149)
* RCP-1
55
(RCP-2001
RD%PM!tr!J
A
A
Symbol & Description
VR1O2,VR202 Semi-fixed(1Ok-B)
**
**
t*
**
**
**
RDi/2PSFtrtrtrJ
RD%PSFtrtrÛJ
RslPF!!trJ
R335, R344, R345
R308
lVlark
*
25
RY301
Lea_drelay
14- Shieldcase
Symbol & Description
2SC1740LN
( 2 S C 1 851)
(2SC2021
LNI
(2SC2634NC)
25C2240
o1 01, C)104-0114, 4201, 4204a214,4302
*
Mark
o 3 1 1 - o 3 13
2SC2060
(2SC2673)
( 2 S C318 3 N C )
2SD837
( 2 S D 1 0 3) 1
(2SD686)
0304-o307
PM9002
MB74LS122
(HD74LS122l
(sN74LS122)
tc301
rc302
Symbol & Description
c P - 4 11 8
RD74PM
2O1J
RD/4PM162J
c E A 1 0 0 M1 6
R1001
R1002
c1001
Photo interrupter
Part No.
Symbol & Description
RCV-094
VRl101
Volume (INPUT)
FunctionSwitchAssembly
0102, 0103, 0202, 0203
2SC1740-5
(2SC1740LN-S)
254933LN
(2SA1015)
(254937)
( 2 S A 11 2 7 N C )
Part No.
VolumeAssembly
Mark
Part No.
* s2vcl0RF
* s2vc10F
T e r m i n a l( L I N E )
S301-5303 Push switch assembly
SensorAssembly
R102, R 104-R157, R202, R204R257, R302-R307,R309-R334,
R336-R343,R346, R347, R349R355
R301,R348
Part No.
Symbol & Description
**
r*
RSG-088
RSG-063
**
RSG-I14
5901-5904 Pushswitch
5905-R907 Functionswitch
Pushswitch
5908
0303, o308-o310,o314, O315
JackAssembly( RWX-527)
SWITCH
Mark
**
Part No.
Symbol & Description
RSG-I24
5701
Pushswitch
o301
CAPACITORS
Mark
**
**
R K B . O8l
RSG-I23
RSR-035
M15-414
VR103,VR203 Semi.fixed(1SOk-Bl
SEMICONDUCTORS
Mark
**
**
VR101, VR201 Semi-fixed{22k-B)
Symbol & Description
D301
D302,D308
Part No.
Symbol & Description
C K D Y B4 7 1 K 5 0
c c D s L 1 0 1K 5 0
C E A N Ll O O M1 6
c E A 0 10 M 5 0
c E A 1 0 0 M1 6
c E A 4 7 0 M1 6
ccDsL 470K 50
CKDYF 473250
c701, c702
c713, C714
c703, c704
c 7 0 9 ,c 7 1 0
c 7 0 7 ,c 7 0 8 ,c 7 1 1 ,C 7 1 2 ,C 7 1 7 , C 7 1 8
c705, c706, c715, C716,C719
c 7 2 1 ,C 7 2 2
c720
rvlÉcnrutouEs
tt. nÉcLAcES
Avant de procéder au réglage
Nettoyer les deux supports de bobine, le cabestan et le galet presseur à I'aide d'un bâtonnet
imbibé d'alcool.
1 1 . 1 R É C I E C C D E L A F O R C E D ' A P P U ID U
GALET PRESSEUR
1. Mettre la platine en mode de lecture.
2. Appuyer doucement sur le bras du galet
presseur à I'aide d'une jauge de pression et separer légèrement le galet presseurdu cabestan.
3. Laisser ensuite revenir Ie galet presseur sur le
cabestan et lire la valeur lorsque le galet presseur commence à toumer. Si la valeur lue ne
se situe pas entre 3509 et 5509, remplacer le
ressort du galet presseur.
-
1 1 . 3 B É G L A G ED E L A V I T E
DEFILEMEND
T E LA B
1.
Raccorder le fréquencemè
sortie LINE OLITPUT.
2. Reproduire la partie à 3kHz
STD-301. Au début, la fréq
flrx bomes de
I[ bande d'essai
doit se situer
dans la plage de 2995H2 à 30 Of[2, et elle peut
être réglée en toumant la rt
ajustable
située dans le trou de ré
cabestan,comme indiqué à la
La vitesse de défilement de la bande
tance ajustable est tournée dans le sens
et elle décroît lorseue l'on tourne la
Indicateur de tension
{Piêceno GGK-047)
du moteur-
1r-2.
te lorsque la résisd'une montre.
senstnverse.
\
! é f i l e m e n td e l a
bande
Vi$se de difilement
de la bonde diminuée
s-
Cabestan
F i g . 1 1 - 2 R é g l a g ed e l a v i t e s s ed e d é f
t de la bande
G a l et - p r e s s e u r
B r a sd u g a l e t - p r e s s e u r
R e s s o r td e p r e s s i o nd u
g a le t - p r e s s eru
( P i è c en o R B H - 7 4 2 )
F i g . 1 1 - 1 R é g l a g ed e l a p r e s s i o nd u g a l e t - p r e s s e u r
11.2 RÉGLAGE DU COUPLEDU SUPPORT
DE BOBINE
Mesurer le couple à I'aide d'un dynamomètre
dans les modes de lecture, d'avance rapide (FF) et
de rebobinage(REW). Les valeursmesuréesdoivent
normalement se situer dans les limites admissibles
donnéesau tableau 1.
Si les valeurs mesuréesse trouvent en dehors des
plages indiquées, remplacer I'ensemble support de
bobine TU (réception) etlou I'ensemblesupport de
bobine débiteur, la poulie libre TU ou I'ensemble
complet du bras d'entraînement.
Tableau1
Mode de lecture
Mode FF
Mode REW
o Couple de tension inverse
<J
Support de
bobine TU
Support de
bobine débitrice
35 à 55g.cm
75àll0gcm
r 2 à Sg.cm
o 2 à Sg.cm
1 1 . 4 R É G L A G ED U C O N T
oÉrec.
TION D'ENREGISTREM
R é g l e r l ' e r g o t (+
é lpar une flèche
)i
sur la figure 11-3 sur une
cassette possédant une
contre I'effacement accidentel
Iogement, le contact à levier
et que si une cassette démunie
de protection est chargée,le con
(oFF).
fflle que si une
de protection
Htrargéedans le
eSclenché(ON),
0ette languette
soit déclenché
Plaque latérale gauche
L e v i e rd e c o m m u t a l e u r
( C o m m u t a t e ur
de détection
d ' e nr e g i s t r e m e n
tl
Levier de détection
d'en registremen t
r 2 à Sg.cm
7 5 à 11 O g . c m
F i g . 1 1 - 3 R é g l a g ed u c o m m u t a
d ' e nr e gi s t r e m e nt
{: détection
DE
DEL'ENSEMBLE
îl.s RÉGLAGE
DETECTION
Desserrer la vis O et régner h position de
montage de I'ensemble de détection de manière
à ce que lorsqu'une cassette de type "NORMAL"
est chargée dans le logement le contact à curseur
soit déclenché (OFF), et que lorsqu'une cassette
de type "METAL" est chargée, le contact à curseur
soit enclenché(ON).
Position d'avance
rapide (FF)
Séparation 0
Contre.cabestan
Support de
bobine
dérouleuse
Supportde
bobihe
débitrice
Mode de rebobanage
(REWI
--*
contact à curseur
Contrecabestan
lMoo"d'"u"r,."
rapide (FFl
Engrenage
d'entra înement
Ensemble
de détection
Engrenaged'entra inement
Fig. 114 Réglagede l'ensemblede détection
11.6 RÉCI-RCCOE L'ÉLECTRO.AIMANT
D'AVANCERAPIDE(FF)
1 . Mettre la platine en mode d'avance rapide (FF).
2. Desserrer la vis O et régler la position de
Contre{abestan
Support de bobine dérouleuse
Support de bobine dérouleuse
Electro-aimant d'avance rapide ( F F l
(électro-aimant F)
r,
Électro-aimant de rebobinage (REWI
(électro-aimant R)
montage de l'électro-aimant d'avance rapide
(FF) de manière à ce que le trou ca:né de
I'ensemble support de bobine soit de niveau
avec la bosse de I'ensemble du bras d'entraînement (c'est-à-dire avec un êcart zêro), comme
indiqué sur la figure 11-5.
11.7 NÉCUCE DE L'ÉLECTRO-AIMANT DE
REBOBINAGE(REW)
1. Mettre la platine en mode de rebobinage
(REIry).
2. Desserrer la vis @ et régter la position de
montage de l'électro-aimant de rebobinage
(REW) de manière à ce que le trou cané de
I'ensemble support de bobine soit de niveau
avec la bosse de I'ensemble du bras d'entraÎnement (c'est-à-dire avec un êcafi zérol, comme
indiqué sur la figure 11-5.
Fis.11-5 Régtage
d'avancerapide
de l'électro-aimant
et de rebobinage
I
1 1 . M ECHANICAL ADJUSTMENTS
Priorto adiustment
1 1 . 3 T A P E S P E E DA D J U S T
Clean the both reel base, the capstan and the
pinch roller with an alcohol moistened swab'
1. Connect the frequencY
OL/TPLIT terminals.
2.
1 1 . 1 P I N C H R O L L E R P R E S S U R EA D J U S T MENT
1. Put the tape deck into the playback mode.
2. Gently push againstthe pinch roller arm with
the tension gaugeand separatethe pinch roller
slightly from the caPstan.
3. Then the pinch roller back onto the capstan,
and read the value when the pinch roller starts
to rotate. If the reading fails to lie within
550g, replace the pinch pressure
3509
spnng.
Play back the 3kHz Portion
test tape. At the beginni
should be lie within the
range, and may be adj
semi-fixed resistor located in
adjustment hole as shown in
Tape speed is increased bY turning the
wise, and decreased bY turntng coun
Tensiongauge
(PartNo. CGK-047)
to the LINE
bhe STD-301
-
frequency
3010H2
turning the
apstanmotor
rL-z.
xed resistot clock'
increased
Tape speed decreased
screwd ri ver
Capstan
Fig. 11-2 Tapespeed
1 1 . 4 R E C D E T E C T O RS W I
P i n c hr o l l e ra r m
r r n c n r o l l e rp r e s s u rsep n n g
( P a r tN o . R B H - 7 4 2 )
F i g . 11 - 1 P i n c hr o l l e rp r e s s u raed j u s t m e n t
1 1 . 2 R E E L B A S ET O R O U EA D J U S T M E N T
Measurethe torque with the torque meter
during playback, fast forward (FF) and rewind
(REW) modes. The measured values shottld normally lie within the allowable ranges listed in the
table 1.
If the measured values lie outside the relevant
ranges, replace the TU (take-up) reel base assembly
and/or supply reel base assembly, TU idler, or
drive arm full assembly.
Fig. 11-3 by
en a cassetæ
into the
holder, the lever switch is ON,
without the detector is loaded.
n a cassette
itch is OFF.
Sideplate L assembly
I
detectorlever
Lever switch
(REC detector
switch )
Table 1
F i g . 1 1 - 3 R E Cd e t e c t o sr w i
P l a y b a c km o d e
FF mode
REW mode
TU reel base
35 - 55g.cm
75 - 11Og.cm
* 2 - Sg.cm
* Do notes back tension torque
Supply reel base
2-59cm
2 - Sg.cm
7 5 - 11 o g . c m
USTMENT
Adjust the tange (f)
sho
the arrow to a position wh
with an eraseprevention detec
11.5 DETECTOR
ASSEMBLY
ADJUSTMENT
Loosen screïv Q and adjust the detector assembly mounting position when the NORMAL
cassette tape is loaded into the holder, the slide
switch OFF, and the METAL cassette tape is
loaded, the slide switch is ON.
Boss(Drivingarm full assembly)
REW posi
F position
ldler gear
TU rêel base
assembly
Supplyreel
baseassembly
I
ldler gear
REWMode
TU idler
IFF
Mode
Fig. 11-4 Detectorassemblyadjustment
11.6 FF SOLENOIDADJUSTMENT
1. Put the deck into FF mode.
2. Loosen screws Q and adjust the FF solenoid
mounting position so that the square hole of
the reel base full assembly is flush against the
boss of the driving arm full assembly (i.e. 0
separation)as sholvn in Fig. 11-4.
11.7 REW SOLENOID ADJUSTMENT
1. Put the deck into REW mode.
2. Loosen screw @ and adjust the REl{ solenoid
mounting position so that the square hole of
the reel base full assembly is flush against the
boss of the driving arm full assembly (i.e. 0
separation) as shown in Fig. 11-4.
ldler gear
$rpply reel baseassembly
Supply reel baseassembly
FF solenoid (solenoidF)
Fig. 11-5 FF (REW)solenoidadlustment
12. ELECTRICALADJUSTMENTS
hecaution
1.. Mechanical adjustment should be completed.
2. Clean the following parts with an alcohol
moistened swab: Record/Playback head, pinch
roller, Erasehead, Rubber belts and Capstan.
3. Demagnetize record/playback head with a head
demagnetizer.
4. Do not use magnetized screwdriver for adjustments.
5. Adjustments and measurementsshould be performed for both L ch and R ch with rated
power supply voltage.
6. Adjustments should be performed in the order
given in this service manual. Altering the order
can hinder proper adjustments, resulting in loss
of perforrnance.
7 . Level during measurements are based on 0dBv
= lV. Connect a 50kQ (47 - 52kO ) dummy
resistor acrossthe OUTPUT terminals.
8. Let the CT-5 warm up (aging) for a few
minutes before proceeding with the adjustment.
9. Set the DOLBY NR switch to OFF and TAPE
SELECTOR to the NORM position unless
directed otherwise.
12.1 DOLBY NR ADJUSTMENT
Setting
Mode.
. . Record
InputSignal
. . . . . 7 0 0 H 2 , - 1 0 d B v( 3 1 6 m V )
to LINE INPUT
ACmVmeter1-....
..... TP1(Lch,Rch)
of the Dolby assembly
AC mV meter 2. . . .
TP2 (Lch, Rch)
of the Dolby assembly
Sincethe leftandrightchannels
areidentical,
numbering
of the TP terminals of the Dolby assembly is applied to
both channels.When adjustment, pleaserefer to Fig. l2-9.
Procedure
1. Adjust the INPUT level control so that the AC
mV meter 1 reads-2.2dBv (776mV).
2. Adjust the VR403 (Lch) and VR503 (Rch) so
that the AC mV meter 2 reads -2.2dBv
(776mV).
3. Next set the CT-5 to the playback mode and
apply the input signal (700H2, -10dBv;
316mV) to the TP1 (Lch) and TP2 (Rch) of
the mother assembly.
4. Adjust the attenuator so that the AC mV meter
2 reads-2.2dBv (776mV) and then adjust the
33
Test Equipments/ToolsRequired:
1. Test tape
STD-341A
. . For pl4ybrck adjustment
STD-608A
. . NORMS,II blasrk tape
STD-603
.... CrOzbfanhtape
STD-604
.... METAtr,blanktape
2. Audio oscillator
3. AC millivoltmeter (AC mV)
4. Attenuator
5. Oscilloscope
6. Resistor50kC2(47 - 52kf,2)
F i g .1 2 . 1 C o n t e n t so f t h e t e s tt d p e r S T D - 3 t 4 1 A
VR401 (Lch) and VR501 (Rch) so that the AC
mV meter 1 reads-2.2dBv (77drnV1.
5 . Apply the input signal (70OHz, -1OdBv;
316mV) to LINE INPUT.
6 . Set the CT-5 to the record hode and connect
the AC mV meter to the R.O. {REC OUT) terminal of the Dolby asse$bly. Adjust the
INPUT level control so thatrthe AC mV meter
reads-32.6d8v (23.4mV).
n
Set the DOLBY NR switch tD ON (C type)
position and adjust the att{rqftor so that the
AC mV meter 1 reads-eZ.6Anf (2B.4mV) and
then adjust the VR402 (Lch) a4d VR502 (Rch)
so that the AC mV meter 2 treads-21.6dBv
(83.1mV).
l .
I
>
R E C / F I Bh. e a d
Fig. 12-2 Headazimuth#juttment
ADJUSTMENT
12.2I{EADAZITIUTH
Setting
Mode
TestTape
AC mV meter
VR101, VR201
.... Playback
. SID-3414
(10kHz,- 20dB)
. . . LINE OUTPUT
Turn up to ma:rimum
position
Procsdure
Adjust the azimuth adjusting screw for maximum AC mV meter readings for both L and R
channels. After this adjustment, lock the screw
with screwlock.
12.4 PLAYBACK LEVEL ADJUSTMENT
Sincethis adiuilrnentdeterminec
the DOLBYNR lewl
during playback, it should be performed prccirely.
Setting
Mode
TestTape
AC mV meter
.. .. Playback
. STD-841A(333H2,0dB)
. . . TPl (L ch) and TP1
(R ch) of the DOLBY
assembly
Procedure
Adjust the VR101 (L ch) and VR201 (R ch)
so that the AC mV meter reads- 1.2 dBv (0.87V).
L I N EO U T P U T
STD'34I4
r0(Hz -20d8
slD
333H2
Fig. 12-3 Headazimuth adjustment
Fig. 12-5Playbackleveladjustment
12.3 PLAYBACKEOUALIZERADJUSTMENT
Setting
Mode
Test Tape
Playback
sTD-341A
AC mV meter
(333H2 and 6.3kHz,
-20d8)
LINE OUTPUT
Procedure
1. Play back the 333H2 and 6.3kHz portions of
the STD-341A, and check that difference between the two output levels does not exceed
1.5d8!2d8.
2. Connect the tenninal No.22 with No.23 of
the mother assembly.
Play back the 333H2 and 6.3kHz portions
again, and check that the difference between
the two output levels does not exceed
-2.5dBi2dB.
NORM Dosrrron
l33Hz ouloul -6.3kHz ouloul
=l SdBi2dB
siD-3!ra
333Hr -20d4
6 3k. -20d8
12.5 OVERALL FREOUENCYRESPONSE
ADJUSTMENT
Serting
Record
Mode
sTD-6084,
Test Tape
STD-603,
sTD-604
LINE OUTPUT
AC mV meter
Input Signal
333H2, -30dBv (31mV)
to LINE INPUT
STD-6084
333Hr turour-6
= o.SdB t0
3rHr erDul
5dB
Fig. 12-6 Overallfrequency responseadiustment
Fig. 124 Playbackequalizercheck
11. AJUSTESMECANICOS
Antes del ajuste
Limpiar ambas bases de los carretes, eje de
arrastre y rodillo de presiôn con algodôn humedecido en alcohol.
11.1 AJUSTEDE LA PRESI6NDEL RODILLO
DE PRESIôN
1. Establecer el magnetôfono en el modo de
reproducciôn.
2. Con el calibrador de tensiôn presionar ligeramente contra eI brazo del rodillo de presiôn
y separar un poco dicho rodillo del eje de
arrastre.
3. Luego reposicionar sl rcdille de presiôn sobre
el eje de arra.stre,y leer el valor en el momento
en que el rodillo de presiôn empieza a girar.
Si la indicaciôn cae dentro de 3509 - 5509,
reemplazar el muelle del rodillo de presiôn.
Calibrador de tensi6n
( p i e z an o G G K O 4 7 )
Tabla 1
75 - 1l0g.cm
.
las notas se apoyan en la torsiôn de la
1 1 . 3 A J U S T ED E L A V E L O C I
CINTA
1. Conectarel frecuencimetroa
salida de lfnea (LINE O
2. Reproducir la parte de
prueba STD-301. Al
deberâ estar entre 2995HZ,
podrâ ajustarse girando el
situado en el orificio de ai
eje de arrastre, como se m
7t-2.
La veloci&d de la cinta aumentaré
resistor semifiio, y se reduciré giréndolo hacia
DE LA
la cinta de
frecuencia
3010H2, y
semifijo,
motor del
en la figura
la derecha
el
Eje de arrastre
Motor del ele
Rodillo de presiôn
B r a z od e l r o d i l l o
de presiôn
Muelle del rodillo de presiôn
(pieza no F.BH-742t-
Velocidad disminuida
da la cinta
F i g . 1 1 - 1 A j u s t ed e l a p r e s i 6 nd e l r o d i l l od e p r e s i ô n
11.2 AJUSTE DE LA TORSIÔN DE LA BASE
DEL CARRETE
Uttlizat el modidor de torsiôn para medir la
torsiôn durante las funciones de reproducciôn,
avance râpido (FF) y rebobinado (REW). Los
valores medidos deberân estar normalmente dentro
de los lfmites permisiblesenumeradosen la tabla 1.
Si los valores medidos no estân dentro de tales
lfmites, reemplazar eI conjunto de la base del carrete de a:nastre (TU) y/o conjunto de la basedel canete de suministro, rueda de guia TU, o todo el
conjunto del brazo de arrastre.
lor de
zontal
Fig. 11-2 Ajuste de la velocidad
11.4 AJUSTEDEL INTERR
DE GRABACIÔN
Ajustar la lengueta ( +
),
figura 11-3 mediante la flecha, a
que al cargar un casete con eI
ciôn contra bonado. el inte
posiciôn ON y al cargar un case
quedeen la posiciôn OFF.
cinta
DETECTOR
aenla
iôn en la
de prevenquede en la
el detector,
Conjunto L (izq.)
de la placa lateral
Palancâ detectora
I d eG R A B .
11,7 AJUSTE DEL SOLENOIDE DE
REBOBINADO
1. Establecer el magnetôfono en el modo de
rebobinado.
2. Aflojar los tornillos €) y 4iustar la posiciôn
de montaje del solenoide de rebobinado de
modo que el orifieio cuadrado de todo el
conjunto de la base del carete quede empotrado contra el cubo de todo el conjunto
del brazo de arrastre (i.e. separaciôn 0) como
se muestra en la figura 11-5.
Cubo (conjunto completo del
brazo impulsor)
Fig. 11-3 Ajustedel interruptordetectorde GRABACIôN
11.5 AJUSTE DEL CONJUNTO DETECTOR
Aflojar el tornillo Q y ajustar la posiciôn de
montaje del conjunto detector de modo que
cuando se cargue un casete NORMAL, el interruptor deslizante quede en la posiciôn OFF, y
euando se cargue un casete de METAL, el interruptor deslizante quede en la posiciôn ON.
PosiciônREW
Poeiciôn FF
Separacién O
Engranaie
II
I
Conjuntode
la basedel
carretede
suministro
Conilnto de la
bæe del carrete
de arrastre
Engranaje
intermedio
Modo €,eBEW
---;>
Interruptor deslizante---_!
Modo de FF
Intermedio
de arraslre
C;onjuntodel deæctor
'
Fig. 11-4 Ajuste del conjunto del detector
@njunto de la base del
carrete de suministro
11.6 AJ,USTEDEL SOLENOIDE DE AVANCE
RAPIDO
1. Establecer el magnetôfono en el modo de
avancerâpido.
2. Aflojar los tornillos Q y aiustar la posiciôn
de montaje del solenoide de avance râpido de
modo que el orificio cuadrado de todo el
conjunto de la base del canete quede empotrado contra el cubo de todo el conjunto
delbrazo de arastre (i.e. separaciôn 0) como se
muestra en le figura 11-b.
Engranaje
imfulsor
intermedio
Engranaje
Solenoide de FF
(solenoide Fl
Conjunto de la base del carrete
de suministro
Solenoide de REW
Fig. 11-5 Ajustedel solenoidecleFF (REW)
I
12.RÉclnces ÉlecrRtouES
Précautions
1. Les réglagesmécaniques doivent être terminés.
2. Nettoyer les pièces suivantes à I'aide d'un
bâtonnet imbibé d'alcool: tête d'enregistre_
ment/lecture, galet presseur,tête d'effacement,
courroies en caoutchouc et cabestan.
3. Démagnétiserla tôte d'enregistrement/lectureà
I'aide d'un démagnétiseurde tête.
4. Ne pas utiliser de toumevis magnétisé pour les
réglages.
5. Les réglageset les mesures doivent être réalisés
pour les canalD(de gauche et de droite avec la
tension d'alimentation n ominale.
6 . Les réglagesdoivent être effectués dans I'ordre
indiqué dans ce manuel de service.Une modification de cet ordre peut empêcher la réalisation
de réglages corrects et peut provoquer une
baissede performance.
t.
Les niveaux en cours de mesure sont baséssur
OdBv : 1V. Raccorder une charge fictive de
60 kS) (47 à 52 kSl) entre les bornes de sortie
aux réglages.
9. Placerle commutateurDOLBY \R sur OFF er
le sélecteurTApE SELECTôSl sur la posrrion
NORM, sauf indication conÛaijb.
Equipements/outils d'essairequit
1. Bande d'essai
STD-341A
. . . pour le r{glagede Ia
reproduolion
STD-609A
... Burde,,ilXoRMAL"
\'1rrl'ge
,
3.
4.
5.
6.
STD-603
.. . . . Bande,.0rOz"vierge
STD-604
... .. Bande,,lilETAL"vierge
OscillateurBF
Millivoltmètrealtenratif{ mV C_A)
Atténuateur
Oscilloscope
Résistance50 kC2(47 à b2 kO )
N rveau {dI I
(ouTPUT).
8.
(vieillissement)
Laisser chauffer
le CT-b
pendant quelques minutes avant de procéder
1 2 . 1 R E G L A G ED U S Y S T E M E
DE REDUCTION
D E B R U I TD O L B Y
Réglage
Mode
Enregistrement
S i g n a l d ' e n t r é e . . . .. . . ?OOHz,-10dBv (B16mV)
sur LINE INPUT
Indicateur 1mV CA
TP1 (canal gauche,
canal droit) du montage Dolby
Indicateur 2mY CA
TP2 (canal gauche,
canal droit) du montage Dolby
Les canaux droit et gauche étant identiques, la
numérotation des bornes Tp du montage Dolby
est valable pour Ies deux canaux. Voir la Fig.
12-9 lors du réglage.
Méthode
1. Régler la commande de niveau d'entrée afin
que l'indicateur 1mV CA indique -2,2dBv
(776mV).
2. Régler le VR403 (canal gauche) et le VR50B
(canal droit) afin que I'indicateur 2mV CA
indique - 2, 2dBv (Z?6mV).
3 . Réglerensuitele CT-b sur le mode de reproduction et transmettre le signal d'entrée (lOOlHr.
- 10dBv; 316mV) au Tp1 (canal
gauche) ei
TP2 (canal droit) du montage principal.
4 . Régler I'atténuateur afin que I'indicateur
2mY CA indique - 2,2dBv (??6mV) et
Fig 12.1
C o n r e n ud e t a b a n d ed ' q s s ESi T D _ 3 4 1 A
régler ensuite le VR401 (catral gauche) et le
VR501 (canal droit) afin qtæ I'indicateur
1mV CA indique - 2,2dBv (7f76hnv).
5. Transmettrele signald'entréer(?0
\Hz,_ 10dBv:
316mV) sur LINE INPUT.
6 . Régler le CT-5 sur le mode dlenSegistrementet
raccorder I'indicateur mV 0A sur la borne
REC OUT du montage Dolbf. Régler la com_
mande de niveau d'entrée (lNFUf; afin que
l'indicateur mV CA
indfiqrF - B2,6dBv
(23,4mV).
7.
Tétede repro{ucffon/
enregtstremenl
F i g . 1 2 - 2 R é g l a g ed e t , a z i m u t l d (
IA
12.2 REGLAGEEN AZIMUT DE LA TETE
Préparation
Mode
.Lecture
.... STD-341A(10kHz,
Banded'essai
- 20dB)
A la sortie de ligne
Millivoltmètre CA
(LrNE OUTPUT)
VR101,VR201
. . Tournéesen position
maxlmum
Proédure
Régler la vis de réglage d'azimut cle mar"rière à
obtenir I'indication
maximum du nrillivoltrnètre
CA pour les canaux de gauche et cle droite.
Lorsque ce réglage est terminé. verrotrillt'r la vis à
I'aide du blocage de vis.
12.4 NÉAUCE DU NIVEAU DE LECTURE
le niYeauds DOLBYNR pen'
Ge r6glagedéterminant
dant la lecture, il doit être réalis6avec précision.
Préparation
Mode
Bande d'essai
Millivoltmètre CA
Lecture
.. .. STD-3414(333H2,'0dB)
. TPl (canal de gauche
"L") et TPl (canal de
droite "R") de I'ensemble DOLBY
Proédure
Régler VR101 (canal de gauche) et VR201
(canal de droite), de manière à ce que le millivoltmètre CA indique - 1,2dBv (0,87V).
I VR101 (onôt de gEucholI
I vR2ol (cilglqqeilslj
d'azimutde la téte
Fig. 12-3 Réglage
Fig. 12-5 Réglage
du niveaude lecture
12.3 nÉcuce DE L'ÉcALrsATtoN
DE
LECTURE
Préparation
Mode
Bande d'essai
Millivoltmètre CA
Lecture
STD-341A (333H2 et
6,3kHz, - 20dB)
Sortie de ligne
(LrNE Or..rTPUT)
Procédure
12.5nÉcuce DE LA nÉporuse
eru
rRÉouerucE
GLoBALE
Préparation
Mode
Bande d'essai
Millivoltmètre CA.
Signal d'entrée
1 . Procéder à la reproduction des passages de
333H2 et de 6,3kHz de la bande STD-341A
et vérifier que la différence entre les deux
niveaux de sortie n'excède pas 1,5dB12dB.
Enregistrement
STD-608A,STD-603,
sTD-604
Sortie de ligne
LINE OUTPTN
333H2,-30dBv (31mV)
à I'entrée de ligne
LINE INPUT
Entréo de tigne
LINE INPUT
2 . Brancher le terminal no 22 au terminal no 28
de montage principal. Procéder de nouveau
à la reproduction des passagesde 333H2 et
de 6,3kHz et vérifier que la différence entre
les deux niveaux de sortie n'excède pas - 2,5dB
t2dB.
oi
.
---_
pcition NoRM
- - - - J 1 1 It"',,"
t # , - . ' j?ÊL'
re. a.[-,.__]
6.3kHz
s
o r r i3e3 H z - s o n i e
Pcurel}L-":]
I
i
l=1,5dgt2ae
I
i
lsooo
sroà,o
i
333H2,6,3kHz
-20d8
Fig. 12-4 Contrôle de l'égalisationde lecture
I
VRlO3 (canal de gauche ,,L,,)
VR2O3 (canal de droila "Ft,'l
Fig. 12-6 Réglagede la réponseen fréquenceate
enregistrement/lecture
I
Procedure
1. Adjust the INPUT level control so that
AC mV meter reads- 27dBv (44.6 mV).
2. Record the 333H2 and 6.3kHz signalsonto
STD-608A. Playback the tape and adjust
VR103 (L ch) and VR203 (R ch) so that
differencebetweentwo is +0.5d810.sdB.
the
the
the
the
12.6 RECORD LEVEL ADJUSTMENT
Since this adjustment determines the DOLBY NR level
during recording, it should be performed precisely.
Setting
Mode .
Test Tape
3. Record the 333H2 signalon
Play back the tape and adjust
and VR202 (R ch) so that
reads-5.2dBv (0.54V).
STD.6O8A.
R102 (L ch)
C mV meter
Record the 333H2 signal o
e STD-603.
the AC mV
4.
PIay back the tape and chech
meter reads-5.2dBv (0.55V)
5 . Record the 333H2 sigrral
Play back the tape and
meter reads-5.2dBv (0.55V)
e STD-604.
the AC mV
B.
Record
STD-603,
STD-608A,
STD-604
TPz (L ch) and "1P2
(R ch) of the DOLBY
assembly
333H2, -1OdBv (316mV)
to LINE INPUT
AC mV meter
Input Signal
Procedure
1. Set the TAPE SELECTOR to the NORM
position.
2. Adjust the INPUT level control so that the
AC mV meter reads- 5.2dBv (0.55V).
Using STD-6O8A toith DOLBY NrB ON
Frequency Response
Using STD-341A with DOLBY NR OFF
Howeuer, the right channel is compensated by -ldB at 63H2,
and -0.5d8 at 125H2 becauseof the insulation effect.
f3f,Hz
63Hz
25o1z
333H2
1 k Hz
2XHr
Using STD-6OS with DOLBY NR OFF
r
4 d8
63xr
333e
OverallFrequencyResponse
Using STD-608A with DOLBY NR OFF
Using STD-603 with DOLBY NR ON (
333Hr
type)
Usins STD-604 with DOLBY NR OFF
Using STD-604 uith DOLBY NP ON (B/C type)
Fig. l2-8 Frequencyresponse
n*r--J
d xsl'#i:ll
xïî""li::i@
Fig. 12-9 Adjustment points
12. AJUSTESELECTRICOS
9. Poner el interruptor cle
Dolby (DOLBY NR) en ta
selector de cinbas (TAPE
posiciôn NORM a menos d
cosa.
Precauciones
1.
2.
Deberân completarse los ajustes mecânicos.
Limpiar las partes siguientes con algodôn
humedecido en alcohol: cabeza de grabaciôn/
reproduciôn, rodillo de arrastre, cabeza de
borrado, correas de goma y eje de arrastre.
3. Desmagnetizar la cabeza de grabaciôn/reproducciôn con un desmagnetizador de cabezas.
4. No utilizar destornilladores magnetizados para
los ajustes.
5. Los ajustes y las mediciones deberân realizarse
para la tensiôn nominal de suministro de los
canales izquierdo y derecho.
6 . Los ajustesdeberânrealizarseen el orden dado
en este manual de servicio.Si se alterael orden
Ios ajustes pueden resultar inûtiles, dando
como resultadouna pérdida de rendimiento.
7 . El nivel durante las mediciones se basa en
OdBv : 1V. Conectar un resistor ffcticio de
SOKohmios (47 - S2Kohmios) a los terminalesde salida(OUTPUT).
8 . Dejar que el CT-5 se precaliente durante
algunos minutos antes de proceder con el
ajuste.
12.1 AJUSTE DEL SISTEMA DE REDUCCIÔN
DE RUIDO DOLBY
Ajuste
Modo
Senalde entrada
grabaciôn
7OOHz,- 10dBv (B16mV)
a LINE INPUT
Multivoltfmetro 1 de CA
. Tp1 (canalesizq.
y der.) del conjunto Dolby
Multivoltfmetuo 2 de CA
. TP2 (cana.lesizq.
y der.) del conjunto Dolby.
Puesto que los canalesizquierdo y derecho son
idénticos, la numeraciôn de los terminales de
TP (puntos de prueba) del conjunto Dolby se
aplica a ambos canales.Cuando se realice el ajuste,
referirse a la Fig. 12-9.
Procedimiento
1. Ajustar el control del nivel de entrada (INPUT)
de modo que el multivoltfmetro 1 de CA
indique - 2,2dBv (776mV).
2. Ajustar el VR403 (canal izq.) y VRbOg (canal
der.) de modo que el multivoltfmetro 2 de CA
indique - 2,2dBv (776mV).
3. Luego, establecer el CT-5 en el modo de reproducciôn y aplicar la seflal de entrada (?00
Hz, - 10dBv; 316mV) al TPl (canal izq.)
y al TP2 (canal izq.) del conjunto principal.
Equipos/herramientas
de pruebas
1. Cinta de prueba
STD-341A
pu.u
rep "l]
STD.6O8A
cinta l
blanc
cinta
cinta
blancd
STD.6O3
STD-604
2.
3.
4.
5.
6.
Osciladorsonoro
Milivoltimetrode CA (AC m
Atenuador
Osciloscopio
Resistor de SOKohmios (
de
ôn
MAL en
en blanco
ETAL en
S2Kohmios)
NIVEL (dB)
o
?o
'OOr.c
FiS 12 1
rOOr.c
50r.c
rOOr
C o n t e n i d od e t a c i n
4. Ajustar el arenuador de m
timetro 2 de CA indique
y luego ajustar el VR401 (c
(canal der.) de modo que el
de CA indique -2,2dBv (77
5. Aplicar la senal de entrada
316mV) a la entradade lfnea
6. Establecerel CT-5 en el
y conectar el multivoltfme
nal R.O.
(salida de grabac
Dolby. Ajustar el control
da (INPUT) de modo que
de CA indique - 32,6dBv (28,
7. Ajustar el intemrptor del si
en la posiciôn ON (tipo C)
nuador de modo que el mul
CA indique - 32,6dBv (
ajustar el VR402 (canal i
(canal der.) de modo que
2 de CA indique -21,6dBv (
u e b aS T D - 3 4 1 A
el multivolBv (776mV)
.) y VR501
Itfmereo 1
z, - 10dBv;
E INPUT).
de grabaciôn
CA aI termidel conjunto
ivel de entra-
tivoltfmetro
).
DOLBY NR
el atetfmetro 1 de
) y luego
y el VR502
tivoltfmereo
v).
PRODUC.
Fig. 12-2 Ajuste del aci
41
de ruido
iôn O F F y e l
R) en la
se diga otra
lon
12.2 AJUSTE DEL ACIMUT DE LA CABEZA
Ajuste
.....'reproducciôn
Modo
. . STD-341A (10kHz'
prueba
de
Cinta
- 20dB)
Milivoltimetro de CA . . . LINE OUTPUT
. . incrementar a la posiVR101, VR201
ciôn mâxima
Procedimiento
Ajustar el tornillo de ajuste del acimut para
que el milivoltfmetro de CA ofrezca las lecturas
mâximas de los canales izquierdo y derecho.
Después de este ajuste, enclavar el tomillo con el
bloqueador del tornillo.
12.4 AJ.USTE DEL NIVEL
DE REPRODUC-
cloN
Puerto que esto aiuste determina el nivel del sistema
Dotby durante Ia reproducciôn, deberâ realizarse con
precisi6n.
Ajuste
.... reproducciôn
Modo
. . STD-341A (333H2' 0dR)
Cinta de prueba
Milivoltfmetro de CA . . . TPl (canal izq.) y TP1
(canal der.) del conjunto
DOLBY
Procedimiento
Ajustar la VR101 (canal izquierdo) y la VR201
(canal derecho) de modo que el milivoltimetro de
CA indique - 1,2dBv (0,87V).
TPI
- r (€nol dor.l
Fig. 12'3 Ajuste de acimut de la cabeza
12.3 AJUSTE DEL ECUALIZADORDE
REPRODUCCIôN
Aiuste
reproducciôn
STD-3414 (333H2 Y
6,3kHz, - 20dB)
Milivoltfmetro de CA . . . LINE OUTPUT
Modo
Cinta de prueba
Procedimiento
1. Reproducir las partes de 333H2 y 6,3kHz de
la STD-341A, y comprobar la diferencia entre
los dos niveles de salida no exceda de 1,5d8
r2dB.
2. Conectar el terminal no. 22 al terminal no. 23
del conjunto principal. Reproducir ne nuevo
las partes de 333H2 y 6,3kHz, y cornprobar
que la diferencia entre los dos niveles de
salidano exceda de - 2.5dBt2dB.
Fig. 12-5
Ajuste del nivel de reproducciôn
12.5 AJUSTE GENERAL DE LA RESPUESTA
EN FRECUENCIA
Ajuste
grabaciôn
Modo
prueba
Cinta de
srD-608A, STD-603,
STD-604
Milivoltimetro de CA . . . LINE OUTPUT
333H2,- 30dBv
Sefral de entrada
(31mV) a LINE INPUT
Entradr ds I inr€
(LINE INPUT}
333H2,
-30dBv
{3i mV)
c*eæo i-/ft;
Ê
reproduæi6n
l-
VF103 {6n61izq I
VF2O3 l@nsl (|€r I
Sslida do 3:BHz - relid€ d€ 6'3kHz
= 0,5d8 t o,sdB
de la respuesta
Fig. 12-6 Ajustegrabaciôn/reproducciôn
en frecuencia
de repro'
del ecualizador
FiS.12-4 Comprobaciôn
ducciôn
I
I
3 . Enregistrer le sigrral de
Proédure
1. Régler la commande de niveau d'entrée INPLIT
de manière à ce que le millivoltmètre CA
indique - 27 dBv (44,6mV).
2. Enregistrer les signaux à 333H2 et à 6,3kHz
sur STD-608A. Lire la bande et régler VR103
(canal de gauche) et VR203 (canal de droite)
de manière à ce que la différence entre les
deux soit de *0,5d8r0,5d8.
12.6 REGLAGE DU NIVEAU D'ENREGISTREMENT
Ce réglaç cléterminant
le niveaude DOLBY NR pendantl'enregirtromont,
il doit 6treréaliséavecpr6cision.
Préparation
Mode
Bande d'essai
Millivoltmètre CA
Signal d'enhée
Enregistrement
STD.6O8A.STD.6O3
STD-604
TP2 (canal de gauche
"L") et TP2 (canal de
droite "R") de I'ensemble DOLBY
333H2, - 10dBv
(316mV) à I'entrée de
ligne LINE INPttT
Procédure
1. Placer le sélecteurde bande TAPE SELECTOR
sur la position NORM.
2. Régler la commande de niveau d'entrée INPUT
de manière à ce que le millivoltmètre CA
indique - 5,2dBv (0,55V).
Réponseon fréquence
Utilisation de STD608A auec Ie circuit Dolby hors seruice
(oFF)
Le canal de droite eot compenté de - IdB à 63Hz et de
-0,5d8 à l25Hz, à cauaede I'effet d'ioolement
z sur la bande
régler VR102
STD-608A. Lire la
(canal de gauche) et VR
de manière à ce que le
indique - 5,2dBv (0,54V).
canal de droite)
ivoltmètre CA
4 . Enregistrer le signal de
STD-603. Lire la bande
millivoltmètre CA indiqu
11,5dB.
5 . Enregistrer le signal de
STD-604. Lire la bande
millivoltmètre CA indi
r 1.5d8.
z sur la bande
vérifier que le
,2dBv (0,55V)
sur la bande
fier
que le
,2dBv (0,55V)
Entrée de ligne
(LINE INPUT}
3æn, i 3 1 6 m v)
de gauche "L"
,a-
de droite "R")
OUTPUT)
Fig. 12-7
Réglaç du nive
dh'.sir,...,.nrn,
I
Utilisation de STD608A
(oN) (type B/C)
azuz pg1r, 333u,
en $en),ce
2kqt41,
Utilisation de STD603 auec le
(oFF)
nors Seru,ce
Réponseen fréquence globale
Utilisation de STDîOSA auec le circuit Dolby hors service
(oFF)
25OHz
6,3kHz l2kHz
39
Utiliætion de STD6O3 avec le circuit Dolby
(ON) (type B/c)
en seruice
Utilisation de STD6O4 auec le circuit Dolby
(oN) (type B/C)
4dB
7dB
125H2 333H2
Utilistion
(oFF)
de STD604 avec le circuit Dolby hors seruice
SkHz
Fig. 12-8 Réponseen fréquence
Canalgauche(Ll
Canal droit
Panneauarrière
Réglagede biæ du VR20B
(canaldroitl
P6
Réglaæde biasdu VR1O3
(canalgauche)
Montageprincipal
Régtagedu niveaude reproductionffi
du VR1O1(canatgauchel
|\/
Régrase
duniveau
d,enregisrremant
/*
duvR202(canat
droit)
g
t6ù
Y
ljIffiji
[i"":''.ï.reproduction
ll ll I
Réglaç du niveau d'enrogistrement
du VBl02 lcanal gauche)
Panneau avant
Fig. 12-9 Pointsde réglage
en seruice
3 . Grabar la senal de 333H2 en
Procedimiento
1. Ajustar el control del nivel de entrada (INPUT)
de modo que el milivoltfmetro de CA indique
-27dBv (44,6mY).
2. Grabar las sefralesde 333H2 y 6,3kHz de la
STD-6084. Reproducir la cinta y ajustar la
VR103 (canal izquierdo) y VR20B (canal
derecho) de modo que la diferencia entre la.s
dos seade *0,5d8t0,5dB.
12.6 AJUSTE DEL NIVEL DE GRABACIôN
Puestoque e3teajuste determinael nivel del sirtema
Dolbydurantela grabaciôn,
deberârealizarse
conprecisiôn.
Ajuste
grabaciôn
STD.6O8A,STD-603,
STD-604
Milivoltimetro de CA . . . TP2 (canal izq.) y TP2
(canal der.) del conjunto
DOLBY
Senal de entrada
333H2, - 10dBv
(316mV) a LINE INPUT
Modo
Cinta de prueba
Procedimiento
1. Poner el selector de cintas (TAPE SELECTOR)
en la posiciônNORM.
2. Ajustar el control del nivel de entrada (INPUT)
de modo que el milivoltimetro de CA indique
- 5,2dBv(0,55V).
Respuesta
en f recuencia
Empleando la STD-608A con el sistema DOLBY NR en la
posiciôn OFF
Sin embargo, se compensa el canal derecho en - ldB a 63H2,
y -0,5d8 a 125H2 debido al efecto aislante
producir la cinta y ajustar
izquierdo) y Ia VR202 (
modo que el milivoltimet
- 5,2dBv (0,54V).
4 . Grabar la seflal de 333H2
Reproducir la cinta y
voltfmetro de CA indique
11,5dB.
5 . Grabar la sefral de 333H2
Reproducir la cinta y
voltfmetro de CA indique
11,5d8.
D-608A. ReR102 (canal
derecho) de
CA indique
la STD-603.
que el mili
lBv ( 0 , 5 5 V )
la STD-604.
que el miliBv (0,55V)
E n t r a d ad e l i n e a
(LINE INPUT}
,a'
I 1P2
( c a n ailz q . ) ,
I
o--
F i g . 1 2 - 7 A j u s t ed e l n i v e l l
abaciôn
Empleando la STD-608A con el
posiciôn ON (tipo B/C)
BY NR en lo
4dB
L
L
63Hz 125r.
333H2
Empleando la STD-603 c o n e l
posici6n OFF
63Hz 2S0Hz 333H2 lkHz
10 k H z
'
2kYz
6 . 3 k H z1 2 k H z
63Hz 1 2 5 H 23 3 3 H 2
YNR
en la
-r
4dB
t
Respuesta
en frecuenciaglobale
Empleando Ia STD-608A con eI sistema DOLBY NR en la
posiciôn OFF
Hz
5dB
1k H z
6
6 3 H z 1 2 5 H 2 333H2
Empleando la STD-603 con el siste
posiciônON (tipo B/C)
t
kHz
LBY NR en 1s
Empleando la STD-604 con el sistema DOLBY
posiciônOFF
NR en b
Empleando la STD-604 con el sistema DOLBY
poeiciôn ON (tipo B/C)
SkHz
en frecuencia
Fig. 12-B Respuesta
Canal izq. (Ll
Canal der. lR
R.O. (Salida de
grabaci6nl
(canal izc.lg
R.O. lSalidade
VR403l grabaciônl
TPl (canalizq.)
|
^
LJ rTPl (canalder.l
VR503
Panelposterior
Ajust€ de la polarizaciôn
de VR203 (canal der.)
Conjunto principal
/t=nfl:i\
tt I ttlt.
tl
/ET PI
Ajustede la
polarizaci6n
de VRIGI
(canalizq.l
Alustedel nivel de reproduc.
de VR201 (canal der.l
q@
Ajuste del nivel de reproduc
de VRIOl (canal izq.l
Aiuste del nivel de grab. fâs
de VR2O2 (canal der.l 19Ë
Aiuste del nivel de grab.
d e V R 1 0 2 ( c a n a li z q . l
Panel frontal
Fig. 12-9 Puntosde ajuste
NR en la