Printed Wiring Board; Sub Board (Except Us Model); Schematic Diagram - Sub Board (Except Us Model) - Sony SS-US501 Service Manual

SS-US501/SW-US501/UZ-US501
5-14. PRINTED WIRING BOARD – SUB Board (Except US model) –
1 2 3
A
SUB BOARD
R994
Q992
R992
R993
E
E
D996
Q991
R991
B
JW903
R995
R996
RY991
RY992
C991
C
D
CN990
CN991
1 2
E
(AC IN)
2 1
F
D
• Semiconductor
Location
Ref. No. Location
D991 B-1
D992 D-6
D993 D-6
D994 E-6
D995 D-6
D996 B-3
IC991 B-5
Q991 B-2
Q992 B-2
:Uses unleaded solder.
4 5 6
E AMP BOARD
CN451
(Page 20)
4
C993
1
C994
CNP992
3 1
IC991
D992
D995
D993
D994
T902
SUB POWER
TRANSFORMER
C992
1-860-897-
AMP BOARD
CN902
(Page 20)
5-15. SCHEMATIC DIAGRAM – SUB Board (Except US model) –
CN991
2P
LIVE
NEUTRAL
C992
(Page 21)
0.01
250V
CN990
2P
LIVE
(AC IN)
NEUTRAL
11
(11)
22 22
R996
100
D996
1SS355
RY992
R995
100
RY991
C991
D991
0.01
1SS355
250V
T902
SUB POWER
+5.6V REGULATOR
TRANSFORMER
Q991
IC991
KTC3198GR
S-81256PG-Z
D992 D995 RELAY DRIVE
1SR154-400 1SR154-400 I O
G
D993 D994
1SR154-400 1SR154-400
C993
2200
16V
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
Q992 R993
KTC3198GR 10k
RELAY DRIVE
CNP992
4P
RELAY ON
+5.6V
R991
10k
SUB.GND
(Page 21)
C994
R994 R992
100
100k 100k
10V