Sony HCD-S550 Service Manual page 73

– RELAY Board –
IC701, 711 BA6956AN
TSD
1 2 3 4 5
– DVD Board –
IC203 BR9040F-D-E2
8 7
4096bit
EEPROM ARRAY
ADDRESS R/W
DECODER
AMP
DATA
ADDRESS
BUFFER REGISTER
1 2
CONTROL LOGIC
6 7 8 9
6 5
COMMAND
REGISTER
WRITE
DISABLE
POWER
HIGH VOLTAGE
SUPPLY
GENERATOR
VOLTAGE
DETECTOR
COMMAND DECODE
CONTROL CLOCK
GENERATION
3 4
HCD-S550/S880
IC215 SN74ALVCH16841DGGR
1OE 1 OE LE 56 1LE
1D1 2
55
1D2 3 54
GND 4 53
1D3 5 52
1D4 6
51
VCC 7
50
LATCH
1D5 8
49
1D6 9 48
GND 10 47
1D7 11 46
1D8
12 45
1D9 13 44
1D10 14 43
2D1
15 42
2D2 16
41
2D3 17 40
GND 18 39
2D4 19 38
2D5
20 37
2D6 21 36
LATCH
VCC 22 35
2D7 23 34
2D8
24 33
GND
25 32
2D9
26 31
2D10 27
30
2OE 28 OE LE 29 2LE
1Q1
1Q2
GND
1Q3
1Q4
VCC
1Q5
1Q6
GND
1Q7
1Q8
1Q9
1Q10
2Q1
2Q2
2Q3
GND
2Q4
2Q5
2Q6
VCC
2Q7
2Q8
GND
2Q9
2Q10
73