Sony TC-WE635 User manual

– 1 –
SERVICE MANUAL
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
STEREO CASSETTE DECK
MICROFILM
SPECIFICATIONS
Dolby noise reduction extension manufactured under license
from Dolby Laboratories Licensing Corporation.
HX Pro originated by Bang & Olufsen.“DOLBY”, the double-D
symbol aand “HX PRO” are trademarks of Dolby Laboratories
Licensing Corporation.
TC-WE635
— Continued on next page —
Model Name Using Similar Mechanism TC-WE425/WE525/WR681
Transport Mechanism Type TCM-230ASR4/HSR4

– 2 –
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINE
WITH MARK !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 PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE !SUR LES
DIAGRAMMES SCHÉMATIQUES ETLALISTE DESPIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety checks before releasing the set to the customer:
Check the antennaterminals, metal trim, “metallized”knobs, screws,
and all other exposed metal parts forAC leakage. Check leakage as
described below.
LEAKAGE
The AC leakage from any exposed metal part to earth Ground and
from all exposed metal parts to any exposed metal part having a
returnto chassis,must not exceed0.5 mA (500microampers). Leak-
age 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
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of aVOM
or battery-operatedAC voltmeter.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 pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
0.15 µ F
To Exposed Metal
Parts on Set
1.5k
Ω
AC
voltmeter
(0.75V)
Earth Ground

– 3 –
MODEL IDENTIFICATION
–Back panel–
PARTS No. MODEL
3-032-412-0πUS model
3-032-412-1πCND model
3-032-412-2πAEP model
3-032-412-3πUK model
3-032-412-4πAUS model
3-032-412-5πSP, MY model
3-032-412-6πCH model
• Abbreviation
CND : Canadian model
SP : Singapore model
MY : Malaysia model
AUS : Australian model
CH : Chinese model
TABLE OF CONTENTS
1. GENERAL .......................................................................... 4
2. DISASSEMBLY
2-1. Case ...................................................................................... 5
2-2. Front Panel Assembly ........................................................... 5
2-3. Cassette Lid Assembly (Deck A/B) ...................................... 6
2-4. Mechanism Deck Assembly (Deck A/B) .............................. 6
2-5. Leaf SW (REC/PB) Board (DeckA/B) ................................ 7
2-6. Pinch Lever (FWD)/(REV) Assembly (DeckA/B)............... 8
2-7. Flywheel (FWD)/(REV) Assembly (Deck A/B) ................... 8
2-8. Mechanical Block Assembly (Deck A/B) ............................. 9
2-9. Head Relay (REC/PB) Board (DeckA/B) ............................ 9
3. SERVICE MODE ............................................................ 10
4. MECHANICAL ADJUSTMENTS............................... 11
5. ELECTRICAL ADJUSTMENTS ............................... 11
6. DIAGRAMS
6-1. Circuit Boards Location ......................................................15
6-2. Printed Wiring Board – Main Section –.............................. 17
6-3. Schematic Diagram – Main Section – (1/4)........................ 19
6-4. Schematic Diagram – Main Section – (2/4)........................ 21
6-5. Schematic Diagram – Main Section – (3/4)........................ 23
6-6. Schematic Diagram – Main Section – (4/4)........................ 25
6-7. Printed Wiring Board – Deck Section –.............................. 27
6-8. Schematic Diagram – Deck Section – ................................ 28
6-9. Schematic Diagram – Display Section – ............................ 29
6-10. Printed Wiring Board – Display Section – ....................... 31
6-11. Schematic Diagram – Panel Section – .............................. 33
6-12. Printed Wiring Board – Panel Section –........................... 35
6-13. Schematic Diagram – Power Section – ............................. 37
6-14. Printed Wiring Board – Power Section – ......................... 39
6-15. IC Pin Function ................................................................ 41
7. EXPLODEDVIEWS
7-1. Case Section ........................................................................ 43
7-2. Chassis Section ................................................................... 44
7-3. Cassette Holder Section ...................................................... 45
7-4. Front Panel Section ............................................................. 46
7-5. Tape Mechanism Section (TCM-230ASR4/HSR4) ............47
8. ELECTRICAL PARTS LIST ........................................ 48
Part No.

– 4 –
SECTION 1
GENERAL
LOCATION OF PARTS AND CONTROLS
1Ubutton
2RESET (Deck A) button
3MEMORY (Deck A) button
4RESET (Deck B) button
5MEMORY (Deck B) button
6AUTO REC LEVEL indicator
7REC LEVEL knob
8FADER button
9ARL button
10 SYNCHRO button
11 PHONES jack
12 HIGH/NOMAL button
13 A+B REC button
14 DECK B button
15 DECK A button
16 (AMS) )(Deck B) button
17 0(AMS) (Deck B) button
18 ·(Deck B) button
19 ª(Deck B) button
20 REC r(Deck B) button
21 §(Eject) (Deck B) button
Front Panel
22 REC MUTING R(Deck B) button
23 PAUSE P(Deck B) button
24 p(Deck B) button
25 DOLBY NR B/C switch
26 DOLBY NR OFF/ON FILTER
27 ·/FRONT (Deck A) button
28 ª/BACK (Deck A) button
29 REC r(Deck B) button
30 REC MUTING R(Deck A) button
31 §(Eject) (Deck A) button
32 PAUSE P(Deck A) button
33 p/CLEAR (Deck A) button
34 (AMS) )(Deck A) button
35 0(AMS) (Deck A) button
36 DISPLAY button
37 CHECK button
38 SET button
39 RMS/START button
40 PITCH CONTROL knob
41 PITCH CONTROL button
42 DIRECTION switch
• AMS is the abbreviation forAutomatic Music Sensor.
10
8
9
24 67
135
2321
22
20
11
131415 12161819 17
24
25
26
27
28
2930
31
33 32
34
35
36
3738
39
40
41
42

– 5 –
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. CASE
2-2. FRONT PANEL ASSEMBLY
1 Screw
(BVTP 3x8)
2 Two Screws
(Case 3 TP2)
3 Two Screws
(Case 3 TP2)
4 Case
!™ Screw
(BVTP 3x8)
!¢ Screw
(BVTP 3x8)
!£ Screw
(BVTP 3x8)
!¶ Two screws
(BVTT 3x6)
!§ Claw
!∞ Claw
!• Front panel assy
9 CN1002
0 CN1003
2 CN807
1 CN5802
3 CN803
4 CNA806
5 Flat type wire
(Deck A)
!¡ CN002
6 Flat type wire
(Deck B)
7 Screw
(BVTP 3x8)
8 Wire

– 6 –
2-3. CASSETTE LID ASSEMBLY (DECK A/B)
2-4. MECHANISM DECK ASSEMBLY (DECK A/B)
2 Four claws
1 Push the EJECT button.
3 Cassette lid assy
1 Two screws
(BVTP 2.6x8)
3 Mechanism deck assy
2 Two screws
(BVTP 2.6x8)

– 7 –
2-5. LEAF SW (REC/PB) BOARD (DECK A/B)
1 Two screws
(PS 2.6x6)
2 Capstan motor assy
8 Belt (capstan)
3 Wires
5 Screw
(BVTT 2x4)
4 Screw
(BVTT 2x4)
6 Claws
Claws
7 LEAF SW (REC/PB) board
When installing,
pull the belt (capstan)
put around claws.
a
a
b
b

– 8 –
2-6.PINCH LEVER (FWD)/(REV) ASSEMBLY (DECK A/B)
2-7. FLYWHEEL (FWD)/(REV) ASSEMBLY (DECK A/B)
4 Pinch lever (FWD) ass
y
2 Pinch lever (REV) assy
1 Claw
3 Claw
1 Belt (FR2)
3 Flywheel (FWD) assy
6 Flywheel (REV) assy
4 Washer
7 Washer
2 Stopper washer
5 Stopper washer

– 9 –
2-8. MECHANICAL BLOCK ASSEMBLY (DECK A/B)
2-9. HEAD RELAY (REC/PB) BOARD (DECK A/B)
2 Two screws
(BVTT 2x3.5)
1 Torsion spring
5 Reverse slider
4 Mechanical block assy
3 Two screws
(BVTT 2x3.5)
3 Tension spring (HEAD)
2 HEAD RELAY (REC/PB) board
1 Screw
(
BVTT 2x4
)
4 Head deck assy

– 10 –
RESET 0
MEMORY 1
RMS/START 2
SET 3
CHECK 4
DISPLAY 5
0(AMS) 6
(AMS) )7
p/CLEAR Grid check display (*1)
9/BACK 8
(/FRONT 9
PAUSE PA
REC MUTING Rb
REC rC
DIRECTION MODE switch
Aª
dPLAY
RELAY ·
A deck side
Button Display
KEY CHECK & DISPLAY CHECK MODE
While pressing the ª/BACK (A deck) and REC MUTING R(B deck) buttons with the power off, press the Ubutton to turn on the
power.
The fluorescent display tube displays the number or special message corresponding to the button pressed.
The message displayed differs according to the position of the switch.
SECTION 3
SERVICE MODE
RESET 0
MEMORY 1
DECK A 2
DECK B 3
A+B REC 4
HIGH/NOMAL 5
0(AMS) 6
(AMS) )7
pSegment check display (*2)
ª8
·9
PAUSE PA
REC MUTING Rb
REC rC
FADER d
ARL E
SYNCHRO All lit
DOLBY NR switch (*3)
OFF ª
B PLAY
C·
B deck side
Button Display
Grit check display (*1)
Segment check display (*2)
RMS
(*3) The DOLBY NR switch consists of a pair of switches.
B and C are valid only in the ON or ON FILTER state.

– 11 –
PRECAUTION
1. Clean the following parts with a denatured alcohol-moistened
swab :
record/playback/erase head pinch roller
rubber belts capstan
idlers
2. Demagnetize the record/playback head with a head demagne-
tizer.
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 sup-
ply voltage unless otherwise noted.
Torque Measurement
SECTION 5
ELECTRICAL ADJUSTMENTS
SECTION 4
MECHANICAL 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
DIRECTION MODE switch : A
• Standard record position :
Deliver the standard input signal level to input jack and set the
REC LEVEL knob to obtain the standard output signal level
as follows.
– Record Mode–
0 dB = 0.775 V
Standard Input Level
Test Mode
1. While pressing the ·/FRONT (DECK A) and REC MUT-
ING Rbuttons with the power off, press the Ubutton to turn
on the power. The fluorescent display tube lights up for about
one second, and the test mode is set. The test mode performs the
following two special functions.
• Playback speed switching function
Pressing the HIGH/NORMAL button switches the playback
speed between standard/double speed.
• Counter RESET & MEMORY function
Resets the counter when recording starts.When rewound with
the 0(AMS) buttonafterrecording, stopsatthe pointwhere
recording started.
2. To release the test mode, turn OFF the power switch.
Mode Torque meter Meter reading
Forward CQ-102C 30 to 65 g • cm
(0.42 to 0.90 oz • inch)
Forward
back
tension CQ-102C
DECK A : 1 to 6 g • cm
(0.014 to 0.083 oz • inch)
DECK B : 2 to 9 g • cm
(0.028 to 0.125 oz • inch)
Reverse CQ-102RC 30 to 65 g • cm
(0.42 to 0.90 oz • inch)
Reverse
back
tension CQ-102RC 1 to 6 g • cm
(0.014 to 0.083 oz • inch)
FF/REW CQ-201B 70 to 120 g • cm
(0.97 to 1.67 oz • inch)
set
–
+
AF OSC
attenuator 10 k
Ω
600 Ω
LINE IN
level meter
LINE OUT
47 k Ω
Standard Output Level
TestTape
Input terminal LINE IN
source impedance 10 kΩ
input signal level 0.5 V (–3.8 dB)
Input terminal LINE IN
source impedance 10 kΩ
input signal level 0.5 V (–3.8 dB)
Tape Contents Use
P-4-A100 10 kHz, –10 dB Azimuth Adjustment
WS-48B 3 kHz, 0 dB Tape SpeedAdjustment
P-4-L300 315 Hz, 0 dB PB Level Adjustment

– 12 –
Record/Playback Head Azimuth Adjustment
DECK A DECK B
Procedure:
1. Forward Playback Mode
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 1 dB.
3. Playback Mode
4. Change the reverse playback mode and repeat the steps 1 to 3.
5. After the adjustment, lock the adjustment screws with suitable
locking compound.
Adjustment Location: – record/playback head –
Tape speed Adjustment DECK A DECK B
Adjust DECKA first
Procedure:
– Forward Playback Mode –
(High speed adjustment)
1. Press the PITCH CONTROL button to set to OFF .
2. Set to test mode. (Refer to page 11.)
3. Press the ·button to playback.
4. Press the HIGH/NORMAL button to playback at double speed.
5. Adjust RV316 (DECK A), RV416 (DECK B) so that the fre-
quency counter reading becomes 5,980 ± 80 Hz.
(Normal speed adjustment)
6. Press the ·button to playback.
7. Press the HIGH/NORMAL button to playback at normal speed.
8. Adjust RV317 (DECK A), RV417 (DECK B) so that the fre-
quency counter reading becomes 3,000 ± 90 Hz.
(Pitch control adjustment) (DECK A)
9. Press the PITCH CONTROL button to set to ON .
10. Set PITCH CONTROL knob to mechanical center.
11. Press the ·button to playback.
12. Adjust RV318 so that the frequency counter reading becomes
2,990 ± 90 Hz.
Adjustment Location: MAIN board (See page 14.)
Sample value of wow and flutter
W.RMS (JIS) less than 0.3% .
(test tape : WS-48B)
Playback Level Adjustment DECK A DECK B
Procedure:
– Forward Playback Mode –
Adjust DECK A : RV111 (L-CH), RV211 (R-CH) and
DECK B : RV121 (L-CH), RV221 (R-CH) so the level meter read-
ing becomes the adjustment limits below.
Adjustment Value:
LINE OUT level : –7.7 ± 0.5 dB (0.301 to 0.338 V)
Level difference between channels : within 0.5 dB
Confirmthatthe LINEOUT leveldoes not changein playback mode
while changing the mode from playback to stop several times.
Adjustment Location: MAIN board (See page 14.)
set
test tape
P-4-A100
(10 kHz, –10 dB) level mete
r
LINE OUT
47 k Ω
within
1 dB within
1 dB
output
level
R-CH
peak
R-CH
peak
L-CH
peak
L-CH
peak
screw
position screw position
VH
Screen Pattern
set
In phase 45˚ 90˚ 135˚ 180˚
good wrong
47 k
Ω
47 k Ω
L-CH
R-CH
test tape
P-4-A100
(10 kHz, –10 dB)
LINE OUT
oscilloscope
forward sidereverse side
adjustment screws
set
frequency counter
47 k
Ω
LINE OUT
test tape
WS-48B
(3 kHz, 0 dB)
set
test tape
P-4-L300
(315 Hz, 0 dB) level mete
r
LINE OUT
47 k Ω

– 13 –
Bias Consumption Current Adjustment
DECK A DECK B
This adjustment should be performed when replacing the head assy
or the bias oscillator transformer (T131, T141),(T231, T241).
Setting:
REC LEVEL knob : standard recording position (See page 11.)
Procedure:
1. Connect the digital voltmeter to test point TP331 ( DECK A)
and TP441 (DECK B).
2. Set DECK A: RV131 (L-CH), RV231 (R-CH) and DECK B:
RV141 (L-CH), RV241 (R-CH) to mechanical center.
3. Press the ·button to playback.
4. Adjust DECK A: T131 (L-CH), T231 (R-CH) and DECK B:
T141 (L-CH), T241 (R-CH) so that the digital voltmeter
reading becomes minimum.
Adjustment Value: Maximum 220 mV
Adjustment Location: MAIN board (See page 14.)
Record Bias Adjustment DECK A DECK B
Setting:
REC LEVEL knob : standard record position (See page 11.)
Procedure:
1. Set to test mode (See page 11.)
2. Insert a tape into deck B, press the REC rbutton and then
press the ·button to start recording.
Adjustment level:
The palyback output of 10 kHz level difference against 315 Hz ref-
erence should be ± 0.5 dB.
Adjustment Location: MAIN board (See page 14.)
Record Level Adjustment DECK A DECK B
Setting:
REC LEVEL knob : standard record position (See page 11.)
Procedure:
1. Set to test mode (See page 11.)
2. Insert a tspe into deck B, press the REC rbutton and then
press the ·button to start recording.
3. Record Mode
4. Playback Mode
set
AF OSC
attenuator 10 k
Ω
600 Ω
LINE IN
1) 315 Hz
2) 10 kHz 50 mV (–23.8 dB)
blank tape
CS-123
3. Record Mode
set
recorded
portion level mete
r
LINE OUT
47 k Ω
4. Playback Mode
5. Confirm playback the signal recorded in step 2 become adjust-
ment level as follows.
If the selevels do not adjustment level, adjust DECK A: RV131
(L-CH), RV231 (R-CH) and DECK B: RV141 (L-CH), RV241
(R-CH) to repeat steps 3 and 4.
set
AF OSC
attenuator 10 k
Ω
600 Ω
LINE IN
blank tape
CS-123
315 Hz, 50 mV (–23.8 dB)
set
recorded
portion level mete
r
LINE OUT
47 k Ω
5. Confirm playback the signal recorded in step 2 become adjust-
ment level as follows.
If the selevels do not adjustment level, adjust the RV101 (L-CH)
and RV201 (R-CH) to repeat steps 3 and 4.
Adjustment Value:
LINE OUT level : –23.8 ± 0.5 dB (47.2 to 53.0 mV)
Adjustment Location: MAIN board (See page 14.)
set
321
blank tape
CS-413
TP331 (DECK A)
TP441 (DECK B)
L-CHR-CH
digital
voltmeter
LINE IN
no signal

– 14 –
Adjustment Location: main board
[MAIN board] (Component side)
RV111
PB LEVEL
DECK A (L)
RV211
PB LEVEL
DECK A (R)
TP331
REC
BIAS
T231
BIAS
CURRENT
DECK A (R)
BIAS CURRENT
DECK A (L)
REC BIAS
DECK A (L) RV231
REC BIAS
DECK A (R)
T131
RV131
RV318
PITCH
CONTROL
(DECK A)
RV317
NORMAL SPEED
(DECK A)
RV316
HIGH SPEED
(DECK A)
100
81
80
51 31
1
IC801
50
30
RV102
REC LEVEL
DECK A (L)
RV202
REC LEVEL
DECK A (R)
RV417
NORMAL
SPEED
(DECK B)
RV416
HIGH
SPEED
(DECK B)
RV241
REC BIAS
DECK B (R)
RV141
REC BIAS
DECK B (L)
RV201
REC
LEVEL (R)
REC
BIAS
T241
BIAS
CURRENT
DECK B (R)
BIAS CURRENT
DECK B (L)
T141
52
33
32 20
64
1
IC551
19
51
RV101
REC
LEVEL (L)
RV121
PB LEVEL
DECK B (L)
RV221
PB LEVEL
DECK B (R)
TP441

TC-WE635
WAVEFORMS
– MAIN SECTION (3/4) –
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
• % : indicates tolerance.
•¢: internal component.
•1: fusible resistor.
•C: panel designation.
For printed wiring boards.
Note:
•X: parts extracted from the component side.
•b: Pattern from the side which enables seeing.
• Transistor of“B”and “C”indication is omitted.
•U: B+ Line.
•V: B– Line.
•H: adjustment for repair.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : STOP
( ) : REC
< > : PB
∗: Can not be measured.
• Voltagesaretakenwith aVOM(Inputimpedance 10MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
E: PB
a: REC
• Abbreviation
CND : Canadian model.
AUS : Australian model.
SP : Singapore model.
MY : Malaysia model.
CH : Chinese model.
• Indication of transistor
1
IC801 #ª EXTAL
Note:
The components identi-
fied by mark !or dotted
linewith mark!are criti-
cal for safety.
Replace only with part
number specified.
Note:
Lescomposants identifiéspar
une marque !sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
SECTION 6
DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION
4.4Vp-p
10MHz
TRANS (A) board ( 4 E)
(Except SP,MY)
MAIN board
RECVOL board ( 4 G)
H.P board (
4 D)
HEAD RELAY (REC/PB) board
(Deck B)
HEAD RELAY (REC/PB) board
(Deck A)
LEAF SW (REC/PB) board
(Deck B)
PANEL board (
4 A)
DIRECTION board (
4 C)
POWER board (
4 F)
LEAF SW (REC/PB) board
(Deck A)
TRANS (B) board ( 4 B)
CThese are omitted EB
– 15 – – 16 –
•4A to 4G are including into the mounted panel board.

TC-WE635
– 18 –– 17 –
6-2. PRINTEDWIRING BOARD – MAIN SECTION –
• See page 15 for Circuit Boards Location.
D306 F-10
D307 F-10
D318 F-10
D351 F-11
D451 C-1
D521 E-9
D522 E-9
D601 A-6
D701 B-10
D702 B-10
D703 A-10
D704 A-10
D705 A-10
D706 A-10
• Semiconductor Location
Ref.No. Location Ref.No. Location
D707 B-10
D708 A-7
D709 A-8
D710 B-8
D711 A-8
D712 A-10
D713 B-11
D714 C-10
D715 C-10
D716 B-11
D801 F-6
IC321 D-12
IC331 G-13
(Page 35) (Page 35)
(Page 39)
(Page 31)
(Page 35)
(Page 35)
(Page 27)
(Page 36)
(Page 27)
IC421 A-2
IC431 F-2
IC501 D-3
IC502 A-6
IC504 F-7
IC561 D-9
IC701 A-8
IC801 D-7
IC802 E-6
IC803 G-9
IC804 G-8
IC805 G-4
IC806 G-3
Ref.No. Location Ref. No. Location Ref.No. Location
Q101 B-3
Q102 A-5
Q103 F-7
Q104 C-5
Q201 C-2
Q202 A-4
Q203 F-7
Q204 E-1
Q301 H-7
Q302 H-7
Q303 H-7
Q306 F-10
Q307 G-10
Q308 F-10
Q311 H-8
Q312 H-8
Q314 H-8
Q316 G-10
Q317 G-10
Q318 G-10
Q341 D-13
Q342 D-13
Q343 D-13
Q351 G-11
Q371 C-10
Q373 C-10
Q401 H-6
Q402 G-6
Q403 G-6
Q411 G-5
Q412 G-6
Q414 G-5
Q417 F-5
Q441 G-2
Q442 H-2
Q443 H-2
Q451 C-1
Q471 C-8
Q473 C-8
Q501 A-5
Q502 E-9
Q503 E-9
Ref.No. Location
Q505 G-11
Q506 F-3
Q601 A-5
Q701 A-8
Q702 A-7
Q703 A-9
Q704 A-10
Q707 C-10
Q708 C-11
Q801 F-6
Ref.No. Location

TC-WE635
– 19 – – 20 –
6-3. SCHEMATIC DIAGRAM – MAIN (1/4) SECTION –
(Page
34)
(Page
28)
(Page 21) (Page 21) (Page 25)
(Page 23)
(Page 25)
(Page 23)
(Page 23)
(Page 23)

TC-WE635
– 21 – – 22 –
6-4. SCHEMATIC DIAGRAM – MAIN (2/4) SECTION –
(Page 19) (Page 19) (Page 23) (Page 23)
(Page
25)
(Page
25)
(Page
25)
(Page
25)
(Page
24)
(Page
34)
(Page
28)

TC-WE635
– 23 – – 24 –
6-5. SCHEMATIC DIAGRAM – MAIN (3/4) SECTION –
• See page 16 forWaveforms.
• See page 17 for PrintedWiring Board.
• See page 41 for IC Pin Functions.
(Page 33) (Page 34) (Page 30)
(Page
20)
(Page
20)
(Page
20)
(Page
20)
(Page 22)
(Page 22)
(Page 25) (Page 25) (Page 26)
(Page 22)
(Page 26)
(Page
37)

TC-WE635
– 25 – – 26 –
6-6. SCHEMATIC DIAGRAM – MAIN (4/4) SECTION –
(Page 23) (Page 20) (Page 23, 24) (Page 24) (Page 24)
(Page
34)
(Page
22)
(Page
20)
(Page
22)
(Page
22)
(Page
22)