Schematic Diagram - Primary Board; Ic Block Diagram - Sony HCD-GN880 Service Manual

HCD-GN880
7-24. SCHEMATIC DIAGRAM – PRIMARY BOARD –
HCD-GN880

7-25. IC Block Diagram

– DRIVER Board –
IC701, 712 BA6956AN
1
– BD Board –
IC251 BA5947FM
CH4OUTR
CH4OUTF
CH3OUTF
CH3OUTR
POWVCC
MUTE
GND
GND
PREGND
CT
CH3RIN
CH3FIN
CH4IN
CH4CAPA
OUTVREF
DPOUT
TREVCC
NC
50 50
TSD
CONTROL LOGIC
2 3 4 5 6 7 8 9
19 CH1PUTF
D D 18
20 CH1OUTR
D D 17
21 D 16 CH2OUTF
D
19k
PIN26
6.5k
22 D D 15 CH2OUTR
10k
Vref
POW POW
VCC VCC
23 14 POWVCC
(ch3, 4) (ch1, 2)
50k 50k
50k 50k
24 POW 13 CNF4
VCC
50k 50k
25 12 GND
Vref
26 11 C-M
27 10 C-P
28 9
VG
29 8 CH2RIN
30 7 CH2FIN
100k
6 CH1RIN
31
PIN3
32 5 CH1FIN
10k
50k
33 SW 4 SW
34 3 OPIN+
Pre
35 2 OPIN-
Vcc
36 1 NC