Service manual
CB800
CB802
W801
W803A W803B
IC802
A
1
2
3
4
5
6
7
8
9
10
BCDEFGH I JK
L MN
CD-S1000
42
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
DIGITAL 2/3
5.3
0.6
0.8
30.3
5.0
0
0
5.0
5.0
5.3
5.3
5.0
3.3
0
0
5.0
3.6
0
0
0.1
0.1
1.9
3.3
0
3.3
3.3
3.3
3.3
3.3
0
3.3
0
3.4
5.0
30.3
0
0
0
0.8
0.6
30.3
DIGITAL (2)
DIGITAL (3)
DIGITAL (4)
1
3
2
5
4
GND
AB Y
V
CC
IC802: TC7SH08F
2-input AND gate
IN A
IN B
OUT Y
LL L
LH L
HL L
HH H
to DIGITAL (5)_CB902
Page 43
H4
SAN-PH
Key detection for AD port
Key INPUT (A/D) pull-up resistance 10 k-ohms
Ohm
V
KEY0 (93 pin)
KEY1 (94 pin)
KEY2 (95 pin)
+ 820
0 – 0.3
STOP
PLAY
PURE DIRECT
+ 3.3 k
0.6 – 1.0
PAUSE
SEARCH+/SKIP+
SA-CD/CD
+ 12.0 k
1.6 – 2.0
OPEN/CLOSE
SEARCH-/SKIP-
–