Sony HCD-D390 - Compact Audio And Video System Service Manual page 56

IC281 UPC1237HA
OVER LOAD DET
OFFSET DET
LATCH/
AUTORESET
1 2 3
IC901 LA5617
ON/OFF
ERROR
AMP
1 2
IIC1502 LB1641
T.S.D
MOTOR
DRIVE
1 2 3
F/F
AC OFF
DET
4 5
CURRENT CURRENT
ON/OFF
LIMITER LIMITER
VMUTE VCC
VREF
VCC
VREF
~ _ 1.8V
3 4 5 6 7
FWD/REV/STOP
CONTROL LOGIC
4 5 6 7
— 82 —
V ON
CC
MUTE
V
CC
6 7 8
START
CIRCUIT
VREF
OVER HEAT
PROTECT
ERROR
AMP
8 9 10
O.C.P
MOTOR
DRIVE
8 9 10