Read Sony HCD-XB8KW Service Manual online
– 48 –
• KEY CON section
IC1401 M65847FP
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
+
–
+
–
+
–
1
2
3
4
5
6
7
8
B1
B0
C.COM
CO
INH
VEE
VSS
VDD
B.COM
A.COM
A1
A0
A
B
C
C1
9
10
11
12
13
14
15
16
OPEN
OPEN
OPEN
IC1403 MC14053BCP
IC761 M65850P
• Panel section
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, Sub Amp section
IC301, IC3002 uPC1237HA
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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