Ic281 Μpc1237Ha (Main Board); Ic751M65850P (Hp/Mic Board); Ic602Μpc1330Ha (Audio Board) - Sony HCD-GR8 Service Manual

IC281 µPC1237HA (MAIN BOARD)
OVER LOAD DET
OFFSET DET
LATCH/
AUTORESET
AC OFF
DET
1 2 3 4
IC602 µPC1330HA (AUDIO BOARD)
COMPARATER
1 2 3 4
SW R1 GND SW P1 CONT GND
IC701 M54641L
(MOTOR (TURN) BOARD)
VCC 1
OUT2 2
REG
INPUT
IN1 3
AMP.
CONTROL
INPUT
AMP.
GND 4
V ON
CC
F/F
MUTE
V
CC
5 6 7 8
INVERTER
5 6 7 8 9
VCC SW P2 GND SW R2
VCC
8
POWER AMP.
7 OUT1
POWER AMP.
6 IN2
5 REFERENCE
IC751 M65850P (HP/MIC BOARD)
14 13 12
OSCILLATOR
1/2 VCC
CLOCK
AUTO
MAIN
RESET
RESET
CONTROL
D1
A/D
LPF1
1 2 3
IC801 BA6286N
(MOTOR (SLIDE) BOARD)
1
GND
RIN 2
VREF 3
OUT2 4
RNF 5
TSD
GND 6
OUT1 7
VM 8
VCC 9
FIN
10
– 86 –
11 10 9 8
D/A
LPF2
DO1
MO
20KBIT
SRAM
MI
DO0
4 5 6 7
POWER
SAVE
CONTROL
LOGIC