Sony HCD-D790 Service Manual page 56

QQ
3 7 63 1515 0
IC281 UPC1237HA
1
TE
L 13942296513
www
.
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OVER LOAD DET
OFFSET DET
LATCH/
AUTORESET
2 3
IC901 LA5617
CURRENT
ON/OFF
LIMITER
VMUTE
VREF
VCC
ERROR
AMP
1 2 3 4
IIC1502 LB1641
T.S.D
MOTOR
DRIVE
x ao
FWD/REV/STOP
y
CONTROL LOGIC
i
1 2 3 4
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8
V ON
CC
F/F
MUTE
AC OFF
DET
4 5 6 7
CURRENT START
ON/OFF
LIMITER CIRCUIT
Q Q
3 6 7 1 3
VREF
VCC
OVER HEAT
PROTECT
VREF
~ _ 1.8V
ERROR
AMP
5 6 7 8 9
MOTOR
u163
.
5 6 7 8 9
2 9 9 4 2 8
V
CC
8
1 5 0 5 8 2 9 9 4
10
O.C.P
DRIVE
m
co
10
9 9
2 8 9 9