Sony STR-DN1070 Service Manual page 77

IC1414 BD34702KS2 (MAIN BOARD (3/5))
46 45 44 43
Main
Sub1
Sub2
SBLIN 47
48
SBRIN
49
SLIN
SRIN 50
Mode
selector
CIN 51
52
SWIN
53
FLIN
54
FRIN
FR FL SW
Volume Volume Volume
55
GND
ADC
ADCL 56
57
ADCR
GND 58
59
GND
60
GND
61
GND
GND 62
63
GND
CHIP 64 Logic
1 2 3 4 5 6 7
IC503 TPS2553DBVR (MB-1512 BOARD (5/16))
IN
1
CHARGE
GND 2
PUMP
EN 3 DRIVER
UNDERVOLTAGE
LOCKOUT
THERMAL
SENSE
42 41 40 39 38 37
Mode Mode
selector selector
7.1 ch OUT +32dB ~
-95dB,-INF/0.5dB step
C SR SL SBR
Volume Volume Volume Volume
8 9 10 11 12 13 14 15
REVERSE VOLTAGE
– COMPARATOR
+
CURRENT
OUT
6
SENSE
4-ms
DEGLITCH
CURRENT
LIMIT
5
ILIM
4
FAULT
8-ms
DEGLITCH
36 35 34 33
32
INR7
31 INL7
30 INR8
29
INL8
Mode
selector
28 GND
Rec
27
RECR
26
SBL RECL
Volume
Rec Selector
Sub
25 SUBR
24
SUBL
Sub Selector
SUBOUT
+6dB~-16dB/1 dB step
23
GND
-6dB~-56dB/2dB step
MUTE
HP OUT
22 GND
FRONT/MUTE
21 GND
20
GND
16 17 18 19
STR-DN1070
77