DOWNLOAD Sony TC-WE475 Service Manual ↓ Size: 3.72 MB | Pages: 38 in PDF or view online for FREE

Model
TC-WE475
Pages
38
Size
3.72 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
tc-we475.pdf
Date
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Sony TC-WE475 Service Manual ▷ View online

11
TC-WE475
Adjustment Location: main board
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)
100
81
80
51
31
1
IC801
50
30
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
[MAIN board] (Component side)
12
TC-WE475
SECTION  6
DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION
TRANS (A) board (
v
 E)
(Except SP)
MAIN board
RECVOL board (
v
 G)
H.P board (
v
 D)
HEAD RELAY(REC/PB) board
(Deck B)
HEAD RELAY(PB) board
(Deck A)
LEAF SW (REC/PB) board
(Deck B)
PANEL board (
v
 A)
DIRECTION board (
v
 C)
POWER board (
v
 F)
LEAF SW (REC/PB) board
(Deck A)
TRANS (B) board (
v
 B)
•
vA to vG are including into the mounted PANEL board.
13
13
TC-WE475
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 
Ω
 and 
1
/
4
 
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
f
: internal component.
•
5
: fusible resistor.
•
C
: panel designation.
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.
•
A
: B+ Line.
•
B
: 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.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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.
d
: PB
G
: REC (DECK B)
• Abbreviation
CND : Canadian model.
AUS
: Australian model.
SP
: Singapore model.
• Indication of transistor
C
These are omitted
E
B
1
IC801 
el
 EXTAL
Note:
The components identi-
fied by mark 
0
 or dotted
line with mark 
0
 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque 
0
 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
4.4Vp-p
10MHz
14
14
TC-WE475
6-2. PRINTED WIRING BOARD – MAIN SECTION –
• See page 12 for Circuit Boards 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
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
• Semiconductor
Location
Ref. No.
Location
(Page23)
(Page19)
(Page19)
(Page23)
(Page23)
(Page23)
(Page21)
(Page25)
FORMER TYPE
(SUPPLEMENT-1: Page 4)
NEW TYPE
(Page23)
Ver1.3  2002.09
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