Sony HCD-GTX88 Service Manual page 67

IC301 HA12237F (MAIN Board (3/4))
TEST
20
REC OUT(L)
21 EQ
NC 22
ALC(L)
23
24
REC IN(L)
NC 25
PBOUT(L) 26
MUTE
TA1(L) 27
28
EQOUT(L)
29
PBEQ(L)
PBNF2(L) 30
31
PB NF1
(L)
IC550 RT8H015C-T112-1 (MAIN Board (4/4))
6 5 4
OVER LOAD DC
DETECT DETECT
1 2 3
ALC DET REC MUTE
I REF GND 1M VCC ON/OFF
19 18 17 16 15
ALC
RETURN RETURN
SW SW
B
A
32 33 34 35 36
A IN RIP B IN REC GND
(L) (L) RETN
MUTE HIGH ALC
ON/OFF A/B /NORMAL ON/OFF
14 13 12 11
EQ
MUTE
B
A
37 38 39 40
B IN NC A IN REC NF1
(R) (R) (R)
IC565 PQ05RD21J00H (MAIN Board (4/4))
IC570 PQ09RD21J00H (MAIN Board (4/4))
IC
1 2 3 4
VOUT VDD GND VC
HCD-GTX88
10
REC OUT(R)
NC
9
ALC(R)
8
7
REC IN(R)
6 NC
5 PBOUT(R)
4 TA1(R)
3
EQOUT(R)
2 PBEQ(R)
1 PBNF2(R)
67