Read Sony CMT-EP30 / CMT-EP40 / HCD-EP30 / HCD-EP40 Service Manual online
HCD-EP30/EP40
23
23
4.4 Vp-p
167 ns
0.8 Vp-p
12.4
µ
s
1.3 Vp-p
12.4
µ
s
47.2 Vp-p
11.8
µ
s
3.1 Vp-p
139 ns
3.2 Vp-p
231 ns
POWER BOARD
+
+
A
K
A
K
K
A
K
A
A
K
A
K
A
A
K
K
A
A
K
K
MAIN
BOARD
K
A
K
A
A
K
A
K
+
+
+
+
B C E
B C E
E C B
B C E
AC IN
TR402
POWER
TRANSFORMER
TR401
POWER
TRANSFORMER
E
A
B
C
D
E
1
2
3
4
5
6-10. PRINTED WIRING BOARD – POWER Board –
•
See page 15 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
D401
D-1
D402
C-1
D403
D-1
D404
C-1
D405
B-2
D406
C-2
D407
B-2
D408
B-2
D409
C-3
D411
C-3
D412
D-3
D413
C-3
D414
D-3
Q401
B-3
Q402
B-3
Q403
B-3
Q404
B-3
ZD401
B-3
•
Waveforms
– MAIN Board –
1
IC102
w;
(XOUT)
– CASSETTE Board –
1
Q705 (Collector)
(RECORD (ISS 2) mode)
(RECORD (ISS 2) mode)
2
IC604
qf
(XO)
2
Q706 (Base) (RECORD mode)
3
Q706 (Collector, Emitter)
(RECORD mode)
(RECORD mode)
– DISPLAY Board –
1
IC601
tl
(X2)
(Page 18)
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