Printed Wiring Board - Power Board - Sony HCD-E301 Service Manual

6-10. PRINTED WIRING BOARD – POWER Board – •
1 2
A
POWER BOARD
+ +
+
B C E
K
E
B
MAIN
K A
BOARD
(Page 16)
A
K
A
A K
+
A K
A K
C
A K
K A
K A
D
E
• 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
See page 13 for Circuit Boards Location.
3 4
AC IN
+
B C E
E C B
B C E
K
+
A
K A
K A
A K
A K
TR402
POWER
TRANSFORMER
TR401
POWER
TRANSFORMER
Waveforms
– MAIN Board –
5
1 IC102 ws (XOUT)
139 ns
21 21
– DISPLAY Board –
– CASSETTE Board –
1 Q705 (Collector) 1 IC601 tl (X2)
(RECORD (ISS 2) mode)
3.1 Vp-p
47.2 Vp-p
11.8 s
2 Q706 (Base) (RECORD mode)
1.3 Vp-p
12.4 s
3 Q706 (Collector, Emitter)
(RECORD mode)
0.8 Vp-p
12.4 s
HCD-E301
4.4 Vp-p
167 ns