Service manual

(ABL可変で"1.2∼4.8V"変動)
IC102(22)/(23)→SW動作にて電圧変化
"SW"
IC102(22:KEY1)/(23:KEY2)の各SWの割り当て
KEY1→SW103(3.7V) KEY2→SW102(3.7V)
→SW103(1.3V) →SW105(1.7V)
→SW104(2.6V) →SW107(0V)
→SW106(0V)
5
V
0
V
4
.5V
5
V
5
V
5
V
5
V
5
V
5
V
5
V
5
V
5
V
5
V
0
V
5
V
5
V
0
V
0
V
4
.4V
2
.8V
3
V
5
V
5
V
1
2
7
3
8
5
V
9
5
V
0
V
5
6
4
P-SAVE動作時、0V)
DEGAUSS動作時、5V)
5V
11
11
II
II
CC
CC
11
11
00
00
22
22
((
((
33
33
22
22
))
))
(Vpp=5V)
33
33
II
II
CC
CC
11
11
00
00
22
22
((
((
33
33
66
66
))
))
5V
(Vpp=5V)
44
44
II
II
CC
CC
11
11
00
00
22
22
((
((
33
33
88
88
))
))
5V
(
Vpp=5V)
22
22
II
II
CC
CC
11
11
00
00
22
22
((
((
33
33
33
33
))
))
5V
(Vpp=5V)
66
66
II
II
CC
CC
11
11
00
00
22
22
((
((
55
55
55
55
))
))
5
V
(
Vpp=5V)
77
77
II
II
CC
CC
11
11
00
00
22
22
((
((
33
33
77
77
))
))
-
0.22
V
0
.8V
(
Vpp=1.02V)
88
88
II
II
CC
CC
11
11
00
00
22
22
((
((
44
44
00
00
))
))
5
V
(
Vpp=5V)
99
99
II
II
CC
CC
11
11
00
00
22
22
((
((
44
44
11
11
))
))
5
V
(
Vpp=5V)
11
11
00
00
II
II
CC
CC
11
11
00
00
22
22
((
((
55
55
66
66
))
))
5V
(Vpp=5V)
55
55
II
II
CC
CC
11
11
00
00
22
22
((
((
44
44
55
55
))
))
(
Vpp=5V)
5
V
I
C102(46)/(49)∼(52)も同じ波形
ROTATION動作にて帯域幅変化
BRIGHT
10
IC102(57:CS1)∼(64:CS8)
"
1"→0V
"
0"→5V
"CS"
SCHEMATIC DIAGRAM
MAIN (CONTROL)
DPlus230SB/DPlus230SB-BK