Gc Block Diagram - Sony BKM-301HD Service Manual

7-2. GC BLOCK DIAGRAM

1
CN1
5V 1
5V 2
2
AC IN SWITCHING
MONITOR
POWER BLOCK REGURATOR
DC FAN
CN3
5V 1
3
FAN STOP 3
4
GC
5
A B
IC2
SWITCHING REGULATOR
CONTROL
3
IN1
4
IN1
5 7
FB1 OUT1
6
DTC1
1 2
DTC2
IC1
8 16
REFERENCE
REF
14
VOLTAGE
IN2
6 15 10
OUT2
SCP
13 12
Q1 FB2
IN2
PROTECTOR
Q2, 3
PROTECTOR
IC3
SWITCHING REGULATOR
CONTROL
3
IN1
4
IN1
5 7
FB1 OUT1
16
REF
6
DTC1
11
DTC2
15
SCP
14 10
OUT2
IN2
13 12
Q10
IN2 FB2
PROTECTOR
Q11, 12
PROTECTOR
D2
REFERENCE
VOLTAGE
(SWITCHING REGULATOR CONTROL, REG OUT)
C
GC GC
Q8, 9
3.3V REG OUT
D8
PROTECTOR
Q4-7
AMP
Q27, 28 D6
RECT
–5V SWITCHING
OUT
Q23-26
D10
AMP PROTECTOR
D7
RECT
3
D5
REFERENCE
VOLTAGE
2
1
IC4
8
REFERENCE
VOLTAGE
6
Q17
1.2V REG OUT
D9
PROTECTOR
Q13-16
AMP
Q22
–2V SWITCHING
OUT
Q18-21
D4 D11
RECT PROTECTOR
AMP
1
6
7-2 7-2
D E
CN2
3.3V
2
–5V
6
TO MONITOR
3 1.2V
5 –2V
7 FAN STOP 2
F G H