Sony TC-WR635S User manual

TC-WR635$
SERVICE MANUAL
US Model
Canadian Model
AEP Model
Uk Model
E Model
Australian Model
Model Name Using Similar Mechanism | TC-WR521/WR590
Tape Transport Machanism |DECK A} TCM-190RA12C
Type ECK B| TCM-190RB12C
SPECIFICATIONS
Recording system 4-track 2-channel stereo
Fast winding time Approx. 90 sec. (with Sony C-60 cassette)
Bias AC bias
Signal-to-noise ratio (at peak level and weighted
Type |
(Sony HF-S)
55 dB
Cassette Type IV Type Il
(Dolby NR off)
)
(Sony METAL-S) | (Sony UX-S)
58 dB 57 dB
S/N ratio improvement (approximate values)
with Dolby B NR on: 5 dB at 1 kHz; 10 dB at 5 kHz
with Dolby C NR on: 15 dB at 500 Hz; 20 dB at 1 kHz
with Dolby S NR on: 10 dB at 100 Hz; 24 dB at 1 kHz
0.4% (with Sony Type I, 160 nWb/m, 315 Hz,
3rd H.D.)
1.8% (with Sony Type IV, 250 nWb/m, 315 Hz,
3rd H.D.)
Frequency response (DOLBY NR off)
Type IV cassette (Sony | 30 - 18,000 Hz (+3 dB,IEC)
METAL-S) 30 - 13,000 Hz [+3 dB (-4 dB) recording}
Type Il cassette (Sony - 17.000 Hz (+3 dB.IEC
UX-S) 30 ; z (+3 dB,IEC)
Type | cassette -4 0 Hz (+ IE
(Sony HF-S) 30 - 15,000 Hz (+3 dB,IEC)
Harmonic distortion
Wow and flutter
+ 0.13% W.Peak (IEC)
0.07% W.RMS (NAB)
+ 0.18% W.Peak (DIN)
O16 V
47 k ohms
Inputs
Line inputs
(phono jacks)
Sensitivity
Input impedance
— Continued on page 2 —
Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbo! 0 are trademarks of
Dolby Laboratories Licensing Corporation.
STEREO CASSETTE DECK —
SONY.

Outputs
TABLE
OF
CONTENTS
Line outputs Rated output level 0.5 V at a joad impedance
(phono jacks) of 47 k ohms Sonnion Title Page
Headphones _ Output level 1 mW ata load impedance Ry ofcter é(er-19 (oy 1
(stereo phone jack) of 32 ohms SafeenCheale ous 3
a € y ec. -Ou PERSO SHEESH HEHEHE HEHEHE ESET ETE HEHE EHEC CTE EE EEE EH EOD
General
Power requirements US, Canadian model : 1. GENERAL
120V AC, 60Hz ane
UK, Australian model : l-l. Identifying the Parts Seer eee eee ee eee ee eee ee eee ee ee ee ee 4
240V AC, 50/60Hz
AEP, Germany model:
220-230V AC, 50/60Hz
2. DISASSEMBLY
E model : 120, 220, 240V AC, 50/60Hz 2-1. Front Panel] -ccccecsscervesccccccrcvcnvcvesvcsscccvcecveseseseveece 5
Power consumption 25 W ET DBC [ci seaeaa teas ceteudeestndae de ddecewedatadeaaedens
Dimensions Approx. 430 x 123 x 310 mm (w/h/d) 2-2. Mechanism Deck “S
(17 x 47/s x 121/s inches) including projecting 2-3. Capstan Motor, Reel Motor ss+srsrsrseesecesseeeeereseeeeeeees 6
parts and controls 9-4, Head, Pinch Roller-:++s++ssssssessesecesverscssssrssesssreanees 6
Mass Approx. 4.5 kg (9 Ibs 15 oz)
Supplied accessories
Audio connecting cords (2)
3. ADJUSTMENTS
3-] . Mechanical Adjustments CORR e ee eer ere em ener een eseseeeereHeeees 7
Design and specifications subject to change without notice. 3-2. Electrical Adjustments +-++++esterreeetereeeeeteccateeeeeee tenes 47
Note
This appliance conforms with EEC Directive 87/308/EEC regarding
interference suppression.
MODEL IDENTIFICATION
(Specification Label)
4. EXPLANATION OF IC TERMINALS ©-+--+-+-+0-0-5210 ll
5. DIAGRAMS
5-1, Block Diagramesttssstesesseeeeeeeeeeseeeeeeeeeeeeseneeenenenes 13
5 Oo Circwit Board |. Gcatonssiensans co seien doi nnwanises 15
5-3. Printed Wiring Boards (Main Section) -++++++++++ererseeees 16
5-4. Schematic Diagram (Main Section) srrrrrrrreeereeseeeees Ai
5-5. Schematic Diagram (Audio Section) -+rr+rrrsrrereese ners 26
5-6. Printed Wiring Boards (Dolby (S) Board)-++++++++++++++ 30
5-7. Schematic Diagram (Dolby (S) Board) s+rr+erereeere eres 31
6. EXPLODED VIEWS
6-1 : Chassis Section emer ee re rere ners sereseeressseeseseverees phe 34
6-2. Front Panel Section eee eee eee ee eee ee 35
6-3. Mechanism Section l Comme errr er ee neeerereser essere rereeeereees 36
6-4. Mechanism Section 2 Serer ere e mercer eseeseseeererereeseserenes 37
7. ELECTRICAL PARTS LIST -1:cc-eescceeeeeveeee Seeeeeteree 38
SONY:
STEREO CASSETTE DECK
WML
MODEL NO. TC-WR635S
US, Canadian model : AC 120V 60Hz
UK, Australian model : AC 240V~50/60Hz
AEP, Germany model : AC 220-230V~50/60Hz
E model : AC120, 220, 240V~50/60Hz
— Q—

SAFETY CHECK-OUT
After correcting the original service problem,
perform the following safety check before releasing
the set to the customer:
Check the antenna terminals, metal trim, ‘‘metallized”’
knobs, screws, and all other exposed metal parts for
AC leakage. Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to
earth ground and from all exposed metal parts to any
exposed metal part having a return to chassis, must
not exceed 0.5mA (500 microampers). Leakage
current can be measured by any one of three
methods.
1. A commercial leakage tester, such as the
Simpson 229 or RCA WT-540A. Follow the
manufacturers’ instructions to use these instru-
ments.
2. <A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
3. Measuring the voltage drop across a resistor by
means of a VOM or battery-operated AC volt-
meter. The “limit” indication is 0.75 V, so
analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa
SH-63Trd are examples of a passive VOM that
is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are
suitable. (See Fig. A)
To Exposed Metal
Parts on Set
ae
0.15 pF voltmeter
aa (0.75 V)
—_—s- Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE MARQUE /\
SUR LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES COM.
POSANTS QUE PAR DES PIECES SONY DONT LES
NUMEROS SONT DONNES DANS CE MANUEL OU
DANS LES SUPPLEMENTS PUBLIES PAR SONY.

1-1. IDENTIFYING THE PARTS
SECTION 1
GENERAL aa
This section is extracted from
instruction manual.
Front Panel | a
For details, refer to the page number(s)
indicated in parentheses.
[1] POWER switch
[2] Deck A
[3] COUNTER buttons (deck A)
RESET button
MEMORY button
[4] DIR (direction) MODE switch
[5] DOLBY NR (Dolby noise reduction)
switches
OFF/ON/FILTER ON switch
B/C/S switch
[6] Display panel
SYNCHRO DUBBING buttons
HIGH button
NORMAL button
BALANCE control
* Remote control sensor
You can remotely control this cassette
deck with:
— Aremote commander that came
with a Sony amplifier or receiver if it
has the lal mark and cassette deck
contro! capability.
— Any optional Sony remote
commander with the [id mark and
cassette deck control capability.
(Continued on ‘next page.)
Front Panel
For details, refer to the page number(s)
indicated in parentheses.
[9] REC (recording) LEVEL contro!
COUNTER buttons (deck B)
RESET button
MEMORY button
Deck B
4 (eject) button (deck B)
113] HEADPHONES jack
(stereo phone jack)
Tape operation buttons
44 (leftward fast winding) (Multi-AMS**)
button
bb (rightward fast winding) (Multi-
AMS**) button
WM (stop) button
~“@ (reverse play) button
b> (forward play) button
ii PAUSE button (deck B only)
© REC MUTE (record muting) button
(deck B only)
@ REC (recording) button (deck B only)
15] 4 (eject) button (deck A)
AUTO CAL button
** AMS is an abbreviation for Automatic
Music Sensor.

SECTION 2
DISASSEMBLY
2-3. CAPSTAN MOTOR, REEL MOTOR
Note : Follow the disassembly procedure in the numerical order given.
@ +PTPWH2 x 23
CASE
Unscrew the four case attachment screws M3 X 8 and
remove the case.
2-1.
FRONT
PANEL
\
@
Fitting
base
FRONTPANEL @-—- ©
VOLTAGE SELEcToR M-
capstan belt and put
| When installing, pull "
around claws.
When installing, pull the FR ee
VOLTAGE
and
put
around
claws.
SELECTOR
@ Remove the flat cable.
© Remove the front Panel.
@ claw @ Connectors
@ Capstan motor M1 (DECK A)
M3 (DECK B)
Ground plate
.
l
@ Remove the flat cable.
2-2.
MECHANISM
DECK
©
MD(A)board
(DECK
A)
MD(C)board
(DECK B)
@ Press the EJECT button.
@ Ree! motor M2 (DECK A)
M4 (DECK B)
Remove the cassette holder
Belt (FR)
@ .P2.6 x 2.8
2-4. HEAD, PINCH ROLLER
@ Cassette lid
© BVTP2.6 x8
@ Mechanism deck
HP101(DECK A)
HRPE101(DECK B)
4) Lever (pinch lever REV) assy @ Lever (pinch lever FWD) assy

SECTION 3
ADJUSTMENTS
3-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback/erase head
rubber belts
idlers
2. Demagnetize the record/playback head with a head demagnetizer.
(Head demagnetizer do not approach for the erase head.)
3. Do not use a magnetized screwdriver for the adjustment.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5.The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
pinch roller
capstan
Torque Measurement
(0.42 to 0.9 oz * inch)
DECK A : 1 to 6g * cm
Forward (0.014 to 0.083 oz * inch)
back CQ-102C
tension DECK B : 2 to 9g * cm
(0.03 to 0.12 oz * inch)
30 to 65g *cm
Cee (0.42 to 0.9 02+ inch)
Reverse iobue eh
see CO ERC (0.014 to 0.083 oz « inch)
70 to 120g¢cm
PRIREW
|
CQ-201B
(0.98
to
1.66
ozsinch)
3-2. ELECTRICAL ADJUSTMENTS
PRECAUTION
1. The adjustment should be performed in the publication.
(Be sure to male playback adjustment at first.)
2. The adjustments and measurement should be performed for both
L-CH and R-CH.
® Switch position
DOLBY NR switch : OFF
DIR MODE switch aoa
@ Standard record position :
Deliver the standard input signal level to input jack and set the
REC LEVEL control to obtain the standard output signal level
as follows.
— Record Mode —
AF OSC
VTVM
attenuator
LINE OUT
LINE IN
Standard Input Level
source impedance
ae ere
Standard Output Level
load impedance 47k Q
output signal level 0.5V ( — 3.8dB)
Test Tape
P-4-A 100 10kHz, — 10dB Azimuth Adjustment
P-4-L300 315Hz, 0dB PB Level Adjustment
WS-48B 3kHz, 0dB Tape Speed Adjustment
OdB=0.775V
Test Mode
1. Insert a short-circuit plug into TP801 (2P) and turn ON the
power switch. (Earth pin (9 of IC801 and turn ON the power
switch.)
At first, all the fluorescent tubes light up, then the system returns
to normal display. (However, “O000”is not displayed on the
counter.)
2. To release the test mode, remove the short plug and turn off the
power switch.
3. Remove the short plug after completion of adjustment.
Record/Playback Head Azimuth Adjustment
Procedure : .
1. Forward playback Mode
test tape
P-4-A100
(10kHz, — 10dB) VTVM
LINE OUT
2. Turn the adjustment screw for the maximum output levels. If
these levels do not match, turn the adjustment screw until both of
output levels match together within 1dB.
within *
Screw
position L-CH R-CH
peak peak
—fe- Screw position

3. Playback Mode
test tape
P-4-A100
10kHz, — 100B ‘
( A ) oscilloscope
L-CH
\/n phase of 90° r\ 135° 180°,
wrong
4, Change the reveres playback mode and repeat the steps | to 3.
5. After the adjustment, lock the adjustment screws with suitable
locking compound.
Adjustment Location : — record/playback head —
reverse side forward side
adjustment screws
Tape Speed Adjustment
Procedure :
— Forward Playback Mode —
test tape
WS-48B
(3kHz, 0B)
LINE OUT
(high speed adjustment)
1. Connect 49 pin of IC801 to ground.
2. Set to FWD playback mode.
3. Keep on pressing the HIGH SPEED DUBBING switch.
4, Adjust RV72 so that the frequency counter reading becomes
6,000 + 20Hz.
(normal speed adjustment)
1. Set to FWD playback mode.
2. Adjust RV71 so that the frequency counter reeding becomes
3,000 + 10Hz.
Frequency difference between the beginning and the end of the tape
should be within 3%.
. Frequency difference between the deck A and deck B the beginning
of the tape should be within 1.5%.
Adjustment Location : AUDIO board
Playback Level Adjustment
Procedure :
— Forward Playback Mode —
test tape
P-4-L300
(315kHz, 0B) VTVM
LINE OUT
Adjust RV11(L-CH) and RV21(R-CH) so the VTVM reading
becomes the adjustment limits below.
Adjustment Value :
LINE OUT level : — 7.7 + 0.5dB (0.301 to 0.338V)
Level difference between channels : within 0.5dB
Confirm the LINE OUT level does not change in playback mode
while changing the mode from playback to stop several times.
Adjustment Location : AUDIO board

Bias Consumption Current Adjustment
This adjustment should be performed when replacing the head assy
or the bias oscillating transformer (T81, T91).
Procedure :
( ): R-CH
digital
voltmeter
blank tape
CS-412
| set
LINE IN
no signal
1. Connect the digital voltmeter to test point TP81.
2. Set RV81 (RV91) to mechanical center.
3. Set to FWD record mode.
4, Adjust T81 (T91) so that the digital voltmeter reading becomes
minimum.
Adjustment Value : Maximum 220mV
Adjustment Location : AUDIO board
Record Bias Adjustment
Setting : .
REC LEVEL control : standard record position (Refer to page 7.)
Procedure :
1. Record Mode
' AF OSC
r) ny
oo
blank tape
CS-122
3}
} 38.8mV( — 26aB)
1) 315Hz
2) 10KHz
2. Playback Mode
VIVM
recorded
portion
Confirm that the 10kHz playback output is 0 + 0.5dB relative to the
315Hz output. If necessary, adjust RV81(L-CH), RV91(R-CH) and
repeat the steps given above.
Adjustment Location : AUDIO board
Record Level Adjustment
Setting :
REC LEVEL control : standard record position (Refer to page 7.)
Procedure :
1. Record Mode
AF OSC —
“al.
blank tape
CS-122
attenuator
LINE IN
315HZ — 38.8mV/ - 26qB)
2. Playback Mode
recorded
portion
>
Confirm playback the tape recorded become adjustment level as
follows.
If necessary, adjust RV131(L-CH), RV231(R-CH) and repeat the
steps | and 2.
LINE OUT
Adjustment Value :
LINE OUT level : — 26 + 0.5dB (36.7 to 41.1mV)
Adjustment Location : MAIN board

— Adjustment Parts Location Diagrams —
[MAIN
BOARD]
Record
Level
iy
(R) (L)
RV231 RV131
DECK A:
(AUDIO BOARD)
RV72(HIGH)
Tape speed
RV71(NORMAL)
RV21(R) Playback
Rvi1(L) | Level
DECK B:
[AUDIO BOARD]
Bias Consonption Current
Record Bias
Pome
(R) (L)
RV91 RV81
RV72(HIGH) |
Tape speed
RV71(NORMAL)
T81(L)
T91(R)
RV21(R)
RV11(L)
Bias Consonption
Current
Playback
Level

SECTION 4
EXPLANTION OF IC TERMINALS
IC801 CXP82316-017Q
Terminal name on Terminal explanation
S. REEL(B) J S-Side reel rotation detection at B-deck.
POWER IN PowerOFF. OFF =0V
he Es Normal/High selector for equalizer.
PBSELECTA/B | O | Playback A/B selector. “L”: A-deck, “H” : B-deck
REC MUTE(B) | O | Recording mute ON/OFF. “L” : ON
NR-CTRL2_ | O | Dolby NR control. “L”:OFF, “M":B, “H”:
NR-CTRL1 | O | Dolby NR control. “L”:OFF, “M":B, “H”:C
Pin No.
| CAL Calibration ON/OFF control.
10 REC OUT
SELECT 1332/s
DOLBY-S
REC/PB oO. Dolby-S Playback/Recording selector.
| 12 | BIAS) — | O | Bias ON/OFF at B-deck. “H” : ON
|S. | REEAVB). — 1] O" | Recording/Playback selector at B-deck. “L” : Recording
| 14 | RECCALO | O | Recording calibration. “H”:
dS) RECCALI.. 0. || Recording calibration. “H”:ON
| 16 | GPCALO | GP calibration terminal.
Pi | ereats
Recording 1332/s selector.
Gp calibration terminal.
HALF (A) Half pawl input for A-deck. “L” : Available
TEST Test mode terminal. “L” : Test mode, “H” : Normal mode
20 METAL(B) I Metal tape selector terminal. “H” : Metal
2 70 uw (B) J CrO2 tape selectorterminal “L”’:CrO2
tO
KEY 4
KEY 3
KEY 2
KEY 1
METER(L)
METER(R)
HALF(B)
AMS IN
RESET
EXTAL
XTAL
Key input.
dO QQ Key input.
I) BK
£ Nd vent
© Ops Oo
Key input.
NO N
Key input.
Meter L-CH input.
I Meter R-CH input.
Half pawl input for B-deck. “L” : Available
AMS signal input terminal.
26
Z ~
do 8
Ww
0 I Reset terminal. Reset : OV
W
—
System clock output terminal.
NW we)
—
System clock input terminal.
Power supply (GND)
EQ Bias calibration terminal.
OO OW
34
38
6
ipa BIAS CALO
BAIS CALI
BAIS CAL2
BAIS CAL3
REC/PB
OSC ON/OFF
OSC H/L
Q Bias calibration terminal.
W
EQ Bias calibration terminal.
W
3
EQ Bias calibration terminal.
Recording/Playback selector for Dolby IC. “H” : Playback
OSC ON/OFF control. “H” : OFF
OSC H/L control terminal.
W
(ee)
3°
0

Pin No. Terminal name 1/0
Terminal explanation
Power ON/OFF
Line mute ON/OFF. “L”:ON
Al - POWER OUT
2 LIN MUTE
43. | C. MOT(NORMAL/HT)
44 C. MOTOR(A)
4S C. MOTOR(B)
4 CAL MUTE
pf
<
ON
PLZ VFD Segment.
48 P15 VFD Segment.
P14 FD Segment.
N co)
Pls
Piz
Pil
53 P10
54
FD Segment.
VFD Grid.
VFD Power.
Reel motor (+) output at A-deck. “H”: FF.
Reel motor ( — ) output at A-deck. “HH”: REW.
Reel motor (+) output at B-deck. “H” : FF.
Reel motor ( — ) output at B-deck. “H” : REW.
] Mechanism stop switch input for A-deck.
Mechanism stop switch input for B-deck.
S-Side reel rotation detection at A-deck.
Ww nA} a wR ;
| ir
ool IENe)
<
A ON
y
“Ni
NA
“Ni
uU ON
Bo) Nn
5 Co
WN
\O "g
aw
~ O
uU wo
<i<
ON ie) U
OV
B
Q
Q
Te
67
Q)Q
oH
<
Q
x
ON —
pars mm FR
|
N
7) VFDP
VbD
©
‘
OV’
“Ni
iS)
73
74 | REEL MOTOR(A) +
75 | REEL MOTOR(A) —
76 | REEL MOTOR(B) +
77 | REEL MOTOR(B) —
8 STOP SW(A)
9 STOP SW(B)
S. REEL(A)
~]
It

SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM
J501=1
LINE. IN ‘4
R-CH
Rv90
REC LEVEL
R=CH
PB/REC EQ AMP
1C5021/2)
(DECK A)
PIOL G3)
PLAYBACK
HEAD
ipete
REC/PB/ERASE (DECK B
HEAD
Y
SBI(DECK A)
{CrO2)
DOLBY (S)
cPISt
1¢502
(2/2)
® FILTER
(2) 1€503
—= R-CH
SWITCHING
SD)
ray,
SYSTEM CONTROL
IC80i
SWITCHING +H
9505 (9) CAL CINE MUTE G2)
050!
REC/PB —— AY
SWITCH 88) REC7PB Gi-7 [62
0503 , 504 fale
64}
70,
NR @)nr KEY 1@)
CONTROL
Q501 , 502 LL 6 NR
NOISE AMP
10504
Q561 , 562
$
ANS
29)
AMS
IN
ONTROL
SIRCS
IN(2)
@)
sectiven
1C901
(6)
REC
MUTE(B)
S8I{DECK A}
STOP
o
°
S81 (DECK B)
STOP
40) OSC F/L
KEY 3@3)
(il) DOLBY~S REC/PB
(10) REC OUT SELECT 1332/5 KEY 4)
eee
(17)
ee REC CALO
(15) REC CALI
PB SELECT A/B
¥1/ x2 POWER OUT @))
METER(L)
4 hie RESET QO) pa GB)
b SIVE 46) CAL MUTE
REEL
(4)—»(5) MoTor
GS —>(6) prive @
1803 (172)
ee
REEL MOTOR(A)+
@) stop swia) REEL MOTORIA)—
(9) STOP SW(B)
REEL MOTOR(B)+
~~
(3) RELAY (8) REEL MOTOR(B}-
$83
(METAL)
$82
(Cr2}
DOLBY HX PRO
1c81
@0) METAL (8)
POWER IN (3)
0) S-REEL( A)
COMPARATOR
1C806
C+ MOTOR (A) @)
Poa
(i) S-REEL(B)
SD BIAS CAL 3
34) (L SB) BIAS CAL 0
C- MOTOR
wormat x0
G5) BIAS CAL 1
6) BIAS CAL 2
{DECK 8)
HRPEIOI-2 x
PB/REC/ERASE
HEAD
R-CH is omitted : Same os L-CH
@8) HALF(8) C-MOTOR(8 145)
& 8 r;
fra] >< ad
(2)—3!)—_®) (9)
'e)
x801 5 | Te8ol
LINE /HEAOPOHONE
AMP
J502
@7)NR IN 1
re
) MUTING
WAZ ait
|
HEADPHONES
J501-2
Fi
$922
aon
F2
B-
(-7,5v)
SWITCHING
704
8+
(+7.5v)
(+5v)
RECT
0701, 702
TC-WR635S
QQ)
CONTROL () B+
Q7l MI{DECK A)
CAPSTAN
MOTOR
SPEED oz
CONTROL (1) B+
MI(DECK B)
CAPSTAN
MOTOR
$701 |
ON lh D706
aaa
OFF 0708
+ 44
0705
5-2. CIRCUIT BOARDS LOCATION
POWER TRANSFORMER board
AUDIO board
(DECK
A)
SWITCH-B
board
SWITCH-A
board
(DECK
B)
(DECK A)
MAIN board
POWER SWITCH
board
PANEL board
HEADPHONE board DOLBY (S) board
AUDIO board
(DECK B)
@ SEMICONDUCTOR LEAD LAYOUTS
CXA1417Q SBX1610-59 2SA473 HZS6A1L.
CXA1599Q 28D2012 UZL-7L2
11ES2
188120
Ly cathode
123 a i -
se
;
as
anode
(TOP VIEW)
2SA1162
DTA144ES .
DTC114ES
CXP82316-017Q DTC143TS <
2SC2603-EF oe
2SD2144S B
7 8 2SB1116A-L
Nerney 28D1387
MARKING SIDE VIEW
es 1N4148M
PST572E
aa.
DTC144ES PANS
2SA1175-HFE
28C2785-HFE
Vv
enode
i we 2SD1622-S
OUT
GND
1SS352
pane CATHODE

TC-WR635S
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CAPSTAN MOTOR
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5-5. SCHEMATIC DIAGRAM (AUDIO SECTION) © Refer to page 21 for Note.
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S
GP CAL
REC CAL (a)
B00ST!
REC OUTI
HP OUTI HP OUT2 (%)
REC OUT2
BPB INI
BPB IN2
APB INI
APB IN2
— 33 —

NOTE:
@ -XX, -X mean standardized parts, so
they may have some difference from the
original one.
@ The construction parts of an assembled
part are indicated with a collation
number in the remark column.
@ Color indication of Appearance Parts
Example :
KNOB, BALANCE eee
SECTION 6
EXPLODED VIEWS
@ Items marked “ « ”are not stocked since
they are seldom required for routine
service. Some delay should be antici-
pated when ordering these items.
@ The mechanical parts with no reference
number in the exploded views are not
supplied.
@ Hardware ( # mark)list is given in the
last of this parts list.
The components identified by
mark or dotted line with mark
are critical for safety.
Replace only with: part number
specified.
Les composants identifiés par une
marque A\ sont critiques pour la
sécurité.
Ne les remplacer que par une
piéce portant le numéro spécifié.
Parts
color
Cabinet’s
color
e@
G:
Germany
6-1.
CHASSIS
SECTION
EMODEL
___
EXCEPT
E
MODEL
Ree
eaten
AA:
POWER
TRANSFORMER
BOARD
|
Ale
a
’
A. -¢
7
#1
7
i, ao
és
13
12 Us, Canadian,
AEP, E, G MODEL
cluding AA)
Ref.No. Part No. Description Remark Ref.No. Part No. Description Remark
1 1-690-906-11 WIRE (FLAT TYPE) (9 CORE) Al2 1-558-945-21 CORD, POWER (POLAR. SPT-1) (US, Canadian)
He 1-575-781-11 WIRE, FLAT TYPE (9 CORE) Al2 1-575-651-21 CORD, POWER (AEP, G)
3 3-704-366-01 SCREW (CASE) (M3X8) Al2 1-696-586-11 CORD, POWER (UK)
4 3~332-578-61 CASE Al2 1-696-845-11 CORD, POWER (AUS)
5 4~-943-148-32 FOOT (F58175SW) (US, Canadian) * 13 3-703-244-00 BUSHING (2104), CORD (AEP, UK, G, AUS)
5 4-943-148-42 FOOT (F58175SW) (AEP, UK, G, E, AUS) * 13 3-703-571-11 BUSHING (S) (4516), CORD (US, Canadian, E)
* 6 3-346-265-11 HOLDER, PC BOARD Al4 1-569-007-11 ADAPTER, CONVERSION 2P (E)
* 7 3-332-563-01 BRACKET (P) * 15 4-956-370-02 BAND, PLUG FIXED (AUS)
x 8 A-2007-019-A MAIN BOARD, COMPLETE (US, Canadian, AEP) * 16 A-2006-954-A DOLBY(S) BOARD, COMPLATE
* 8 A-2007-021-A MAIN BOARD, COMPLETE (UK, AUS) 17 2-181-754-01 COVER, BATTERY (Canadian)
* 8 A-2007-022-A MAIN BOARD, COMPLETE (E) 18 1-465-738-11 REMOTE COMMANDER (Canadian)
* 8 A-2007-059-A MAIN BOARD, COMPLETE (G) AFT01 1-532-285-00 FUSE (1. 250A) (AEP, UK, G, E, AUS)
* 9 1-533-293-11 FUSE HOLDER AFT01 1-576-103-11 FUSE (1. 600A) (US, Canadian)
* 10 3-385-970~-41 PANEL, BACK (US, Canadian) AFT02 1-532-285-00 FUSE (1. 250A) (AEP, UK, G, E, AUS)
* 10 3-385-970-51 PANEL, BACK (AEP, G) AFT02 1-576-103-11 FUSE (1. 600A) (US, Canadian)
* 10 3-385-970-61 PANEL, BACK (UK, AUS) AT701 1-450-837-41 TRANSFORMER, POWER (US, Canadian)
* 10 3-385-970-71 PANEL, BACK (E) AT701 1-450-838-41 TRANSFORMER, POWER (AEP, UK, G, AUS)
* 11 4-949-235-01 HOOK (US, Canadian, AEP, G, BE) ATT01 1-450-839-11 TRANSFORMER, POWER (E)
Al2 1-551-188-XX CORD, POWER (E) AVS7T01 1-692-155-11 SELECTOR, POWER VOLTAGE (VOLTAGE) (£)

6-2. FRONT PANEL SECTION
MB: POWER SWITCH BOARD
WiC : HEADPHONE BOARD
TCM-190RA12C
57
(including *® E)
67
66
J 68
. not supplied see SS
(including * E)
Ref. No. Part No. Description Remark Ref.No. Part No. Description Remark
51 X-3366-230-1 LID (B) ASSY, CASSETTE 66 4-951-620-01 SCREW (2. 6X8), +BVTP
52 3-377-334-01 KNOB (REC) 67 3-377-329-11 BUTTON (COUNTER)
53 3-367-431-01 KNOB (BAL) 68 3-382-382-01 SPRING, COMPRESSION
54 X-3366-229-1 LID (A) ASSY, CASSETTE 69 3-377-342-11 BUTTON (HR)
55 3-377-335-01 WINDOW (M) (US, AEP, UK, G, E, AUS) 70 3-385-972-01 BUTTON (FR)
55 3~377-335-11 WINDOW (M) (Canadian) * 71 A-2007-020-A PANEL BOARD, COMPLETE
56 3-385-968-21 PANEL, FRONT (US, Canadian) 1Z 1-690-911-11 WIRE (FLAT TYPE) (11 CORE)
56 3-385-968-31 PANEL, FRONT (AEP, UK, G, E, AUS) 73 1-575-628-11 WIRE, FLAT TYPE (27 CORE)
57 X-3340-195-1 HOLDER (R) ASSY, CASSETTE * 74 3-354-953-01 LEVER (LOCK LEVER L)
58 3-354-963-01 DAMPER 15 3-354-955-01 LEVER (EJ SAFTY LEVER L)
59 3-354-960-01 SPRING (LOADING R), TORSION 76 3~354-961-01 SPRING (EJ SAFTY SPRING L)
60 3-354-962-01 SPRING (EJ SAFTY SPRING R) 17 3~354-959-01 SPRING (LOADING L), TORSION
61 3-354-956-01 LEVER (EJ SAFTY LEVER R) 78 3-308-823-11 SPRING
* 62 3-354-954-01 LEVER (LOCK LEVER R) 19 X-3340-194-1 HOLDER (L) ASSY, CASSETTE
63 3-354-957-01 JOINT (LOCK LEVER) * 80 3-381-755-01 PLATE (HEAD LEAD), SHIELD
64 3-377-328-01 BUTTON (EJECT) 81 4-925~334-1]1 EMBLEM (5-A), SONY
65 3-354-932-01 BUTTON (POWER) VFD901 1-517-162-11 INDICATOR TUBE, FLUORESCENT

6-3. MECHANISM SECTION 1
(TCM-190RA12C : DECK A)
(TCM-190RB12C : DECK B)
Ref. No.
101
102
103
104
105
106
107
108
109
110
lil
* 112
* 112
113
114
Part No.
X-3359-408-1
3-356-713-01
37-359-455-01
X-3359-404-1
3-362-308-01
3-356-714-01
X-3359-409-1
X-3362-078-1
3-359-424-01
3-359-430-01
3-343-419-01
1-634-841-14
1-634-841-14
3-359-466-01
X-3359-410-1
ie: / DECK B
HP101: DECKA
Description Remark
101
LEVER (PINCH LEVER FWD) ASSY
WASHER
SPRING, TORSION
TABLE ASSY, REEL
CAP (REEL)
WASHER
LEVER (PINCH LEVER REV) ASSY
TABLE ASSY (B), REEL
GEAR (REV GEAR)
SPRING(CASSETITE RETAINER), LEAF
HOLDER (S SENSER A)
SW-A BOARD (DECK-A)
SW-B BOARD (DECK-B)
BELT (FR), SQUARE
FLYWHEEL (REV) ASSY
Ref. No.
xs
115
116
117
118
119
121
122
122
122 119
Cc
“A
115
\
116
Part No. Description Remark
3-359-417-01 BELT (FLAT), CAPSTAN
X-3359-406-1 FLYWHEEL (FWD) ASSY
3-575-321-00 RETAINER, THRUST, CAPSTAN
3-359-436-01 BASE (THRUST RETAINER), FITTING
3-359-414-01 SCREW (+PTPWH 2X23)
1-638-983-11 PC BOARD, MOTOR FLEXIBLE
A-2006-399-A AUDIO BOARD (RA12A), COMPLATE (DECK~-A)
A-2006-401-A AUDIO BOARD (RB12A), COMPLATE (DECK-B)
HP101 A-2003-837-F BASE ASSY, HEAD (PLAYBACK) (DECK~A)
HRPE101 A-2003-838-A DECK ASSY, HEAD (PLAYBACK/RECORD/ERASE)
IC81
M1
MZ
(DECK-B)
8-719-710-03 DIODE NJL5165K-B
X-3359-417-1 MOTOR(CAPSTAN) ASSY
X-3363-501-1 MOTOR ASSY, REEL