Sony HCD-GX450 Service Manual page 120

HCD-GX450
IC251 BA5947FM-E2
28 27
1
– DRIVER Board –
42
26 25 24 23
+ –
INTERFACE
INTERFACE
INTERFACE
2 3 4 5 6
IC303 BH15FB1WG
VOLTAGE
REFERENCE
1 2
IC701, 712 BA6956AN
1 2 3
22 21 20 19 18
MUTING
D
D
VREF
7 8 9 10 11
THERMAL
PROTECTION
OVER CURRENT
PROTECTION
CONTROL
BLOCK
3 4 5
TSD
CONTROL LOGIC
4 5 6 7 8 9
17 16 15
D D D
LEVEL SHIFT
D D D
12 13 14