Sony STR-DH550 Service Manual page 44

STR-DH550/DH750
IC400 BD34701KS2 (MAIN BOARD (3/7))
39 38
GSM
Main
Sub
SBLIN
40
SBRIN 41
SLIN 42
selector
SRIN 43
CIN 44
45
SWIN
46
FLIN
FRIN
47
48
GND
ADC
FR
ADCR
49
Volume
ADCL
50
51
GND
CHIP 52
1 2
IC2008 BR24T64FJ-WE2 (MAIN BOARD (4/7))
A0 1
64Kbit EEPROM ARRAY
ADDRESS WORD
A1 2 13bit
DECODER ADDRESS REGISTER
START STOP
A2 3
CONTROL LOGIC
HIGH VOLTAGE GEN Vcc LEVEL DETECT
GND 4
44
37 36 35 34 33
GSM GSM GSM GSM GSM GSM
Mode Mode
selector
FL SW C SR
Volume Volume Volume Volume
Logic
3 4 5 6 7
8 Vcc
8bit
DATA
7 WP
REGISTER
6 SCL
ACK
5 SDA
32 31 30 29 28 27
GSM GSM GSM GSM GSM
Mode Mode
selector selector
SL SBR SBL
Volume Volume Volume
8 9 10 11 12 13
GND
26
25 INR7
INL7
24
INR8
23
INL8
22
GND
21
GND
20
Rec
RECR
19
RECL
18
GND
17
16 GND
SUBR
15
SUBL
14