DOWNLOAD Sony TC-WE675 Service Manual ↓ Size: 5.18 MB | Pages: 47 in PDF or view online for FREE

Model
TC-WE675
Pages
47
Size
5.18 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
tc-we675.pdf
Date

Sony TC-WE675 Service Manual ▷ View online

11
TC-WE675
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
12
TC-WE675
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 (REC/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-WE675
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 
 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
).
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.
• Indication of transistor
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
C
These are omitted
E
B
14
14
TC-WE675
6-2. PRINTED WIRING BOARD – MAIN SECTION –
• See page 12 for Circuit Boards Location.
(Page 23)
(Page 19)
(Page 19)
(Page 23)
(Page 23)
(Page 21)
(Page 23)
(Page 25)
(SUPPLEMENT-1: Page 4)
NEW TYPE
FORMER TYPE
(Page 23)
Ver 1.3  2002.09
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