Sony HCD-EP40 - Power Board Printed Wiring and Waveforms; Power Board Component Layout; Key Signal Waveforms

HCD-EP30/EP40
2323
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
KA
KA
AK
AK
A
A
K
KA
A
K
K
MAIN
BOARD
KA
KA
AK
AK
+
+++
BCE
BCE
ECB
BCE
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)
2 IC604 qf (XO) 2 Q706 (Base) (RECORD mode)
3 Q706 (Collector, Emitter)
(RECORD mode)
– DISPLAY Board –
1 IC601 tl (X2)
(Page 18)
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
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