Sony TCWE-475 Service manual
TC-WE475
SERVICE MANUAL
Ver. 1.6 2005.11
Dolby noise reduction extension manufactured under license
from Dolby Laboratories Licensing Corporation.
HX Pro originated by Bang & Olufsen. “DOLBY”, the double-D
symbol ; and “HX PRO” are trademarks of Dolby Laboratories
Licensing Corporation.
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Model Name Using Similar Mechanism TC-WE435
Transport Mechanism Type
DECK A TCM-230ASR41A
DECK B TCM-230ASR41B
System
Fast-winding time
Approx.100 sec. (with Sony C-60 cassette)
Signal-to-noise ratio (at peak level and weighted with Dolby
NR off)
55 dB, using Sony TYPE I cassette
57 dB, using Sony TYPE II cassette
58 dB, using Sony TYPE IV cassette
S/N ratio improvement
With Dolby B NR on:
Approx. 5 dB at 1 kHz, 10 dB at 5 kHz
With Dolby C NR on:
Approx. 15 dB at 500 Hz, 20 dB at 1 kHz
Harmonic distortion
0.4% (using Sony TYPE Icassette):
160 nWb/m 315 Hz, 3rd H.D.)
1.8% (using Sony TYPE IV cassette):
250 nWb/m 315 Hz, 3rd H.D.)
Frequency response (DOLBY NR OFF)
30-16,000 Hz (±3 dB, IEC), 20-17,000 Hz
(±6 dB), using Sony TYPE I cassette
30-17,000 Hz (±3 dB, IEC), 20-18,000 Hz
(±6 dB), using Sony TYPE II cassette
30-19,000 Hz (±3 dB, IEC), 20-20,000 Hz
(±6 dB), 30-13,000 Hz (±3 dB, –4dB recording),
using Sony TYPE IV cassette
SPECIFICATIONS
Wow and flutter
±0.15% W. Peak (IEC)
0.1% W. RMS (NAB)
±0.2% W. Peak (DIN)
Variable pitch range
Approx. –30 to +30 %
Inputs
Line inputs (phono jacks)
sensitivity 0.16 V, input impedance 47 kilohms
Outputs
Line outputs (phono jacks)
rated output level 0.5 V at a load impedance of
47 kilohms, load impedance over 10 kilohms
Headphones (stereo phone jack)
output level 0.25 mW at a load impedance of
32 ohms
— Continued on next page —
9-873-893-17
2005K02-1
© 2005.11
STEREO CASSETTE DECK
Sony Corporation
Home Audio Division
Pubulished by Sony Engineering Corporation
TC-WE475
General
Power requirements
U.S.A.and Canadian models:
120 V AC, 60Hz
European models:
230 V AC, 50/60Hz
Australian models:
240 V AC, 50/60Hz
Other models:
120/220/230-240 V AC, 50/60Hz
Adjustable with voltage selector
Power consumption
18 watts
Dimensions (w/h/d)
Approx. 430 × 120 × 300 mm
Mass 4.2 kg
Supplied accessories
Audio connecting cords (2)
Control A1II cable (1)*
*Supplied for Canadian models only
Design and specifications are subject to change
without notice.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for A C 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
return to chassis, must not exceed 0.5 mA (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
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 a V OM
or battery-operated A C v oltmeter. 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
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIA GRAMS AND IN THE
PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
P AR T NUMBERS APPEAR AS SHO WN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
0.15µF
1.5kΩ
Earth Ground
AC
voltmeter
(0.75V)
Fig. A. Using an AC voltmeter to check AC leakage.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMA TIQ UES ET LA LISTE DES PIÈCES 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.
2
TC-WE475
MODEL IDENTIFICATION
–Back panel–
P ARTS No. MODEL
4-232-514-0s US model
4-232-514-1s CND model
4-232-514-2s AEP model
4-232-514-3s UK model
4-232-514-4s SP model
4-232-514-5s AUS model
• Abbreviation
CND : Canadian model
SP : Singapore model
AUS : Australian model
Part No.
TABLE OF CONTENTS
1. GENERAL .......................................................................... 4
2. DISASSEMBLY
2-1. Case ......................................................................................5
2-2. Front Panel Assy ................................................................... 5
2-3. Cassette Lid Assy (Deck A/B) .............................................. 6
2-4. Mechanism Deck Assy (Deck A/B) ...................................... 6
3. SERVICE MODE .............................................................. 7
4. MECHANICAL ADJUSTMENTS................................. 8
5. ELECTRICAL ADJUSTMENTS ................................. 8
6. DIAGRAMS
6-1. Circuit Boards Location ...................................................... 12
6-2. Printed Wiring Board – MAIN Section –............................ 14
6-3. Schematic Diagram – MAIN (1/4) Section –...................... 15
6-4. Schematic Diagram – MAIN (2/4) Section –...................... 16
6-5. Schematic Diagram – MAIN (3/4) Section –...................... 17
6-6. Schematic Diagram – MAIN (4/4) Section –...................... 18
6-7. Printed Wiring Board – DECK A Section – ........................ 19
6-8. Schematic Diagram – DECK A Section –........................... 19
6-9. Printed Wiring Board – DECK B Section –........................ 19
6-10. Schematic Diagram – DECK B Section –......................... 19
6-11. Schematic Diagram – DISPLAY Section – ....................... 20
6-12. Printed Wiring Board – DISPLAY Section – .................... 21
6-13. Schematic Diagram – PANEL Section – ........................... 22
6-14. Printed Wiring Board – PANEL Section – ........................ 23
6-15. Schematic Diagram – POWER Section – ......................... 24
6-16. Printed Wiring Board – POWER Section – ......................25
6-17. IC PIN FUNCTION .......................................................... 26
7. EXPLODED VIEWS
7-1. Case Section ........................................................................ 27
7-2. Chassis Section ................................................................... 28
7-3. Cassette Holder Section ...................................................... 29
7-4. Front Panel Section ............................................................. 30
7-5. Tape Mechanism Section .................................................... 31
8. ELECTRICAL PARTS LIST ........................................ 32
3
TC-WE475
Front Panel
SECTION 1
GENERAL
1 2 3 4 5 6 7
ea
e;
wl
Location of Parts and Controls
1 POWER button
2 RESET (Deck A) button
3 MEMORY (Deck A) button
4 RESET (Deck B) button
5 MEMORY (Deck B) button
6 AUTO REC LEVEL indicator
7 REC LEVEL knob
8 FADER button
9 ARL button
q; SYNCHRO button
qa PHONES jack
qs HIGH/NOMAL button
qd (AMS) M (Deck B) button
qf H (Deck B) button
qg REC z button
qh A (Eject) (Deck B) button
wj
ql qjwg wd
wa
ws qs
wf w; qk qhwh
qj REC MUTING W button
qk h (Deck B) button
ql PAUSE X button
w; x (Deck B) button
wa m (AMS) (Deck B) button
ws (AMS) M (Deck A) button
wd DOLBY NR OFF B/C switch
wf H (Deck A) button
wg h (Deck A) button
wh m (AMS) (Deck A) button
wj A (Eject) (Deck A) button
wk x (Deck A) button
wl PITCH CONTROL knob
e; PITCH CONTROL button
ea DIRECTION MODE switch
• AMS is the abbreviation for Automatic Music Sensor.
qg
8
9
0
qa
qd
qfwk
4
SECTION 2
DISASSEMBLY
• The equipment can be removed using the following procedure.
Set Case
Note : Follow the disassembly procedure in the numerical order given.
2-1. CASE
Front Panel Assy Cassette Lid Assy (Deck A/B) Mechanism Deck Assy (Deck A/B)
3
two screws
(case 3 TP2)
4
case
1
screw
(BVTT 3x6)
TC-WE475
2
two screws
(case 3 TP2)
2-2. FRONT PANEL ASSY
5
flat type wire
(Deck A)
qf
screw
(BVTP 3x8)
qj
claw
9
CN002
8
CN301
2
CN807
6
flat type wire
(Deck B)
1
CN5802
3
CN803
4
qh
claw
qg
two screws
(BVTT 3x6)
CNA806
0
(BVTP 3x8)
qa
wire
screw
7
CN401
qd
screw
(BVTP 3x8)
qk
qs
screw
(BVTP 3x8)
front panel assy
5
TC-WE475
2-3. CASSETTE LID ASSY (DECK A/B)
1
Push the EJECT button.
2
four claws
2-4. MECHANISM DECK ASSY (DECK A/B)
3
cassette lid assy
3
mechanism deck assy
1
two screws
(BVTP 2.6x8)
2
two screws
(BVTP 2.6x8)
6
TC-WE475
SECTION 3
SER VICE MODE
KEY CHECK & DISPLAY CHECK MODE
While pressing the h (A deck) and REC MUTING W buttons with the power off, press the POWER button to turn on the power.
The fluorescent indicator tube displays the number or special message corresponding to the button pressed.
The message displayed differs according to the position of the switch.
A deck side
Button Display
RESET 0
MEMORY 1
m (AMS) 2
(AMS) M 3
x Grid check display (*1)
h 4
H 5
DIRECTION MODE switch
g h
s PLAY
RELAY H
B deck side
Button Display
RESET 0
MEMORY 1
HIGH/NOMAL 2
m (AMS) 3
(AMS) M 4
x Segment check display (*2)
h 5
H 6
PAUSE X 7
REC MUTING W 8
REC z 9
FADER A
ARL b
SYNCHRO All lit
DOLBY NR switch
OFF h
B PLAY
C H
Grit check display (*1)
RMS
Segment check display (*2)
7
TC-WE475
r
SECTION 4
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
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 demagnetizer.
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.
Torque Measurement
Mode Torque meter Meter reading
Forward
Forward
back
tension
Reverse CQ-102RC
Reverse
back
tension
FF/REW
CQ-102C
CQ-102C
CQ-102RC
CQ-201B
30 to 65 g • cm
(0.42 to 0.90 oz • inch)
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)
30 to 65 g • cm
(0.42 to 0.90 oz • inch)
1 to 6 g • cm
(0.014 to 0.083 oz • inch)
70 to 120 g • cm
(0.97 to 1.67 oz • inch)
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 : g
• Standard record position :
Deliver the standard input signal le vel to input jack and set the
REC LEVEL knob to obtain the standard output signal level
as follows.
– Record Mode–
AF OSC
attenuator
Standard Input Level
Input terminal LINE IN
source impedance 10 kΩ
input signal level 0.5 V (–3.8 dBs)
Standard Output Level
Input terminal LINE IN
source impedance 10 kΩ
input signal level 0.5 V (–3.8 dBs)
10 kΩ
600 Ω
LINE IN
set
LINE OUT
level mete
47 kΩ
+
–
Test T ape
Tape Contents Use
P-4-A100 10 kHz, –10 dB Azimuth Adjustment
WS-48B 3 kHz, 0 dB Tape Speed Adjustment
P-4-L300 315 Hz, 0 dB PB Level Adjustment
0 dBs = 0.775 V
Test Mode
1. While pressing the H (DECK A) and REC MUTING W
buttons with the power off, press the ! button 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 m (AMS) button after recording, stops at the point where
recording started.
2. To release the test mode, turn OFF the power switch.
8
TC-WE475
r
r
Record/Playback Head Azimuth Adjustment
DECK A DECK B
Procedure:
1. Forward Playback Mode
test tape
P-4-A100
(10 kHz, –10 dB)
set
LINE OUT
level mete
47 kΩ
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.
L-CH
peak
screw
position
R-CH
peak
output
level
1 dB
L-CH
peak
R-CH
peak
within
1 dB
screw position
within
3. Playback Mode
test tape
P-4-A100
(10 kHz, –10 dB)
L-CH
set
47 kΩ
oscilloscope
VH
Tape speed Adjustment DECK A DECK B
Adjust DECK A first
Procedure:
– Forward Playback Mode –
test tape
WS-48B
(3 kHz, 0 dB)
set
LINE OUT
47 kΩ
frequency counter
(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 H 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 frequency counter reading becomes 5,980 ± 180 Hz.
(Normal speed adjustment)
6. Press the H 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 frequency 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 H 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)
R-CH
In phase 45˚ 90˚ 135˚ 180˚
good wrong
47 kΩ
LINE OUT
Screen Pattern
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 –
forward sidereverse side
adjustment screws
Playback Level Adjustment DECK A DECK B
Procedure:
– Forward Playback Mode –
test tape
P-4-L300
(315 Hz, 0 dB)
set
LINE OUT
level mete
47 kΩ
Adjust DECK A : RV111 (L-CH), RV211 (R-CH) and
DECK B : R V121 (L-CH), RV221 (R-CH) so the level meter reading becomes the adjustment limits below.
Adjustment V alue:
LINE OUT level : –7.7 dBs ± 0.5 dB (0.301 to 0.338 V)
Level difference between channels : within 0.5 dB
Confirm that the LINE OUT level does not change in playback mode
while changing the mode from playback to stop several times.
Adjustment Location: MAIN board (See page 14.)
9
TC-WE475
e
r
e
r
Bias Consumption Current Adjustment DECK B
This adjustment should be performed when replacing the head assy
or the bias oscillator transformer (T141, T241).
Setting:
REC LEVEL knob : standard recording position (See page 11.)
Procedure:
digital
voltmeter
TP441
LINE IN
no signal
blank tape
CS-413
set
L-CHR-CH
321
1. Connect the digital voltmeter to test point TP441.
2. Set RV141 (L-CH), RV241 (R-CH) to mechanical center.
3. Press the H button to playback.
4. Adjust T141 (L-CH), T241 (R-CH) so that the digital voltmeter
reading becomes minimum.
Adjustment V alue: Maximum 220 mV
Adjustment Location: MAIN board (See page 14.)
Record Bias Adjustment 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 z button and then
press the H button to start recording.
3. Record Mode
Record Level Adjustment 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 z button and then
press the H button to start recording.
3. Record Mode
AF OSC
10 kΩ
attenuator
set
600 Ω
LINE IN
315 Hz, 50 mV (–23.8 dBs)
blank tap
CS-123
4. Playback Mode
recorded
portion
set
LINE OUT
level mete
47 kΩ
5. Confirm playback the signal recorded in step 2 become adjustment level as follows.
If the selevels do not adjustment lev el, adjust the R V101 (L-CH)
and RV201 (R-CH) to repeat steps 3 and 4.
Adjustment V alue:
LINE OUT level : –23.8 dBs ± 0.5 dB (47.2 to 53.0 mV)
Adjustment Location: MAIN board (See page 14.)
AF OSC
blank tap
CS-123
attenuator
10 kΩ
600 Ω
LINE IN
1) 315 Hz
2) 10 kHz
set
50 mV (–23.8 dBs)
4. Playback Mode
recorded
portion
set
LINE OUT
level mete
47 kΩ
5. Confirm playback the signal recorded in step 2 become adjustment level as follows.
If the selevels do not adjustment lev el, adjust the R V141 (L-CH)
and RV241 (R-CH) to repeat steps 3 and 4.
Adjustment level:
The palyback output of 10 kHz level dif ference against 315 Hz reference should be ± 0.5 dB.
Adjustment Location: MAIN board (See page 14.)
10
Adjustment Location: main board
[MAIN board] (Component side)
TC-WE475
RV111
PB LEVEL
DECK A (L)
RV211
PB LEVEL
DECK A (R)
RV318
PITCH
CONTROL
(DECK A)
RV317
NORMAL SPEED
(DECK A)
RV316
HIGH SPEED
(DECK A)
RV121
IC551
20
52
51
19
DECK B (L)
DECK B (R)
PB LEVEL
DECK B (L)
64
1
BIAS CURRENT
RV141
REC BIAS
RV241
REC BIAS
RV101
REC
LEVEL (L)
1
100
81
80
IC801
51
30
31
50
RV417
NORMAL
SPEED
(DECK B)
RV416
HIGH
SPEED
(DECK B)
33
32
PB LEVEL
DECK B (R)
DECK B (L)
T141
CURRENT
DECK B (R)
RV221
RV201
REC
LEVEL (R)
TP441
REC
BIAS
T241
BIAS
11
TC-WE475
)
6-1. CIRCUIT BOARDS LOCATION
LEAF SW (REC/PB) board
(Deck A)
SECTION 6
DIAGRAMS
TRANS (A) board (v E)
(Except SP)
TRANS (B) board (v B)
POWER board (
DIRECTION board (
v
F)
v
C)
HEAD RELAY(PB) board
(Deck A)
PANEL board (
LEAF SW (REC/PB) board
(Deck B)
v
A)
• vA to vG are including into the mounted PANEL board.
H.P board (v D)
HEAD RELAY(REC/PB) board
(Deck B)
MAIN board
RECVOL board (
v
G
12
TC-WE475
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 Ω and
specified.
• % : indicates tolerance.
f
•
• 5 : fusible resistor.
• C : panel designation.
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair .
• Voltage is dc with respect to ground under no-signal
• Voltages are taken with a VOM (Input impedance 10 MΩ).
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
• Abbreviation
: internal component.
Note:
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part
number specified.
(detuned) condition.
no mark : STOP
( ) : REC
< > : PB
Voltage variations may be noted due to normal production tolerances.
Voltage variations may be noted due to normal production tolerances.
d : PB
G : REC (DECK B)
CND : Canadian model.
AUS : Australian model.
SP : Singapore model.
: Can not be measured.
∗
1
4
/
W or less unless otherwise
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
WAVEFORMS
– MAIN SECTION (3/4) –
1
4.4Vp-p
10MHz
IC801 el EXT AL
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• : Pattern from the side which enables seeing.
• Transistor of “B” and “C” indication is omitted.
• Indication of transistor
C
EB
These are omitted
13 13
TC-WE475
Ver1.3 2002.09
• Semiconductor
Location
Ref. No. Location
D306 G-10
D307 G-10
D318 G-10
D451 C-2
D601 A-6
D701 B-10
D702 B-10
D703 A-10
D704 A-10
D705 A-10
D706 A-10
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
(Page23)
6-2. PRINTED WIRING BOARD – MAIN SECTION –
• See page 12 for Circuit Boards Location.
(Page23)
FORMER TYPE
(Page25)
NEW TYPE
(SUPPLEMENT-1: Page 4)
IC321 D-12
IC421 A-2
IC431 F-2
IC501 D-3
IC502 A-6
IC561 D-9
IC701 A-8
IC801 D-7
IC802 E-6
IC806 G-3
Q101 B-3
Q102 A-5
Q104 C-5
Q201 C-2
Q202 A-4
Q204 E-1
Q302 H-7
Q303 H-7
Q306 G-10
Q307 G-10
Q308 G-10
Q311 H-8
Q312 H-8
Q314 H-8
Q316 G-10
Q317 G-10
Q318 G-10
Q371 C-10
Q373 C-10
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
Q506 F-3
Q601 A-5
Q701 A-8
Q702 A-8
Q703 A-9
Q704 A-10
Q707 C-10
Q708 C-11
Q801 F-6
(Page21)
(Page23)
(Page23)
(Page19)
(Page19)
(Page23)
14 14
6-3. SCHEMATIC DIA GRAM – MAIN (1/4) SECTION –
TC-WE475
(Page 22)
(Page 17)
(Page 19)
(Page 17)
(Page 16)
15 15
TC-WE475
Ver1.3 2002.09
6-4. SCHEMATIC DIAGRAM – MAIN (2/4) SECTION –
• See page 14 for Printed Wiring Board.
(Page 22)
(Page 15) (Page 17) (Page 17)
(Page 17)
(Page 18)
(Page 18)
(Page 19)
• Signal Path
d : PB
G : REC
(DECK B)
16 16
The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
(Page 18)
Les composants identifiés par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par une piéce portant le numéro
spécifié.
6-5. SCHEMATIC DIAGRAM – MAIN (3/4) SECTION –
• See page 13 for Waveforms.
• See page 14 for Printed Wiring Board.
• See page 26 for IC Pin Functions.
(Page 22) (Page 22) (Page 20)
(Page 15)
TC-WE475
Ver1.3 2002.09
(Page
15)
FORMER TYPE
(Page 24)
NEW TYPE
(SUPPLEMENT-1: Page 3)
(Page 16) (Page 16)
(Page 16)
(Page 18)
17 17
(Page 18) (Page 18)
The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par une piéce portant le numéro
spécifié.
TC-WE475
Ver1.3 2002.09
6-6. SCHEMATIC DIAGRAM – MAIN (4/4) SECTION –
(Page 16)
(Page 17) (Page 17) (Page 17)
(Page
16)
(Page 22)
(Page
16)
• Signal Path
d : PB
G : REC
(DECK B)
18 18
TC-WE475
Ver. 1.6
6-7. PRINTED WIRING BOARD – DECK A SECTION –
• See page 12 for Circuit Boards Location.
INCORRECT
INCORRECT
(Page 14)
TO MAIN BOARD
CN311
TO MAIN BOARD
CN311
(SUPPLEMENT-3: Page 3)
Former type
(Page 14)
New type
6-9. PRINTED WIRING BOARD – DECK B SECTION –
• See page 12 for Circuit Boards Location.
INCORRECT
INCORRECT
(Page 14)
TO MAIN BOARD
CN411
TO MAIN BOARD
CN411
(SUPPLEMENT-3: Page 3)
Former type
(Page 14)
New type
• PLUNGER SOLENOID is supplied as the Mechanism Deck
(TCM-230ASR41A : A-2100-941-A).
6-8. SCHEMATIC DIAGRAM – DECK A SECTION –
TO
MAIN BOARD
Former type
(Page 15)
New type
(SUPPLEMENT-3: Page 4)
• PLUNGER SOLENOID is supplied as the Mechanism Deck
(TCM-230ASR41B : A-2100-942-A).
6-10. SCHEMATIC DIAGRAM – DECK B SECTION –
TO
MAIN BOARD
Former type
(Page 16)
New type
(SUPPLEMENT-3: Page 5)
19 19
TC-WE475
6-11. SCHEMATIC DIAGRAM – DISPLAY SECTION –
20 20
(Page 17)
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