Sony HCD-V707, Руководство по обслуживанию

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– 84 –
IC901 LA5617
ON/OFF
CURRENT
LIMITER
START
CIRCUIT
VREF
OVER HEAT
PROTECT
ON/OFF
CURRENT
LIMITER
1
2 3
4
5 6 7 8 9 10
VCC
VMUTE VCC
VREF
ERROR
AMP
VREF
ERROR
AMP
VO1 VCC CN1
EN
EN DISPLAY
GND
NC
CN2
VEE
VO2
~ _1.8V
~_
140uA
COMPARATER
– PANEL Section –
IC751 M65850P
OSCILLATOR
1/2 VCC
AUTO
RESET
LPF1
MAIN
CONTROL
A/D
20KBIT
SRAM
LPF2 D/A
1
2 3 4 5 6 7
8 9 10 14 13 12 11
CLOCK
RESET
MO
MI
D1 DO0
DO1
VCC CLOCK REF OP2IN OP2OUT LPF2IN LPF2OUT
LPF1IN
LPF1OUT
OP1OUT
OP1IN
CC1 CC2
GND
– POWER AMP/KEY CONTROL Section –
IC1401 M65847FP-TP
1 2 3 4 5 6 7
8
ADCONT
DA1CONT
KEY DOWN
KEY UP
DAIINTIN ADINTOUT ADINTIN
LPF1
REF REF REF REF
HPF LPF2 MIX
CLKO/KEY0
SDATA/KEY1
SCK/KEY2
STROBE/KEY3
KEY4 KEY5
REF
GND
VCC
MODE2 MODE1 DAIINTOUT LPF1IN LPF1OUT HPFIN HPFOUT LPF2IN LPF2OUT MIXIN MIXOUT
DA2CONT
9 10 11 12
13 14
15 16 17 18
19
20
21
22 23 24
25
26 27 28
+
–
LOGIC
D/A
RESET RAM
A/D
CLOCK
GENERATOR
REF
+
–
+
–
+
–
– DECK Section –
IC602
µ
PC1330HA
1
2 3 4 5 6 7 8 9
INVERTER
COMPARATER
SW R1 GND SW P1 CONT
GND VCC SW P2 GND
SW R2
IC1502 LB1641
1
2 3 4 5 6 7 8 9 10
GND
MOTOR
DRIVE
NOISE
FILTER
CLAMP
FWD.IN
REV.IN
VCC 1 VCC 2
NOISE
FILTER
MOTOR
DRIVE
MOTOR
DRIVE
MOTOR
DRIVE
T.S.D O.C.P
FWD/REV/STOP
CONTROL LOGIC
– MAIN/POWER SUPPLY Section –
IC281
µ
PC1237HA
1 2 3
4 5 6 7 8
OVER LOAD DET
F/F
OFFSET DET
LATCH/
AUTORESET
V
CC
ON
MUTE
AC OFF
DET
V
CC
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