Printed Wiring Boards - Power/Power Sw/Pt Boards - Sony SCD-XB780 Service Manual

SCD-XB780
5-21. PRINTED WIRING BOARDS – POWER/POWER SW/PT Boards – •
1 2
POWER BOARD
A
9
G
AUDIO
BOARD
CN301
(Page 37)
H
1
AUDIO
B
BOARD
CN306
10
(Page 37)
E
MAIN
BOARD
CN707
(Page 28) 1
C
5
J
DISPLAY
1
BOARD
CN802
(Page 38)
3
D
E
C
1
B
IC904
3
E
1
IC905
• Semiconductor Location
Ref. No. Location Ref. No. Location
D901 A-6 D918 E-6
D902 A-6 D919 E-6
D903 C-6 D920 E-6
D904 C-6 D921 D-2
D905 C-6 D922 D-1
D906 C-6 D923 A-3
D907 C-5
D909 D-5 IC901 A-3
D910 D-5 IC902 B-4
D911 D-5 IC903 A-4
D912 D-5 IC904 D-3
D913 E-5 IC905 E-3
D914 E-5 IC906 C-4
D915 E-5
D916 E-5 Q921 D-1
D917 E-6
See page 25 for Circuit Boards Location.
3 4 5
IC903
IC901
3
3
1
1
IC902
3
1
IC906
3
1
6 7 8
PT BOARD
2 1
CN991
2 1
(CHASSIS)
L901
LINE
FILTER
3
1
2
(AC IN)
8
POWER SW BOARD
2
1
S991
1
POWER
1-683-975-
11
(11)
1-683-974-
40 40
9 10 11
∗
NOT REPLACEABLE:
∗ BUILT IN TRANSFORMER
∗
T902
POWER
TRANSFORMER
1
11
(11)
12
T901
POWER
TRANSFORMER
11
(11)
1-683-973-