Schematic Diagram - Kenwood NX-411 Service Manual

A
NX-411
1
DISPLAY UNIT(X54-3770-10)
2
3
4
D1-4
6KEY BACKLIGHT
S11 S12
S14 S15
S1 S2
5
1 2
S4 S5
4 5
S7 S8
7 8
6
LCD CONTRAST
IC102
NJM2130F3-ZB
-7.11V
7
74
X54-377 1/1
B

SCHEMATIC DIAGRAM

LCD ASSY(B38-0923-05)
R16 10k
R17 10k
R18 10k
C6 1u R19 10k
C7 1u R20 10k
C8 1u R21 10k
C9 1u R22 10k
C10 1u R23 10k
C11 0.1u
D5-10
12KEY BACKLIGHT
S13 S17
S16 S10
S3
3
SW1
S6
6
SW2
S9 S18
9
-10V
C122
100p
33M
3.31V -9.98V
C
CN3
R25
0
D11-14
12KEY CONTROL
D11 1SS388F R6 470
Ko0
D12 1SS388F R7 470
Ko1
D13 1SS388F R8 470
Ko2
D14 1SS388F R9 470
Ko3
R10 470
Ki0
R11 470
Ki1
R12 470
ki2
R13 470
ki3
R14 470
ki4
LCDCNT
C133
2.2u16
IC105
LM2682MMX
1 8
C1- NC
5.01V
C123 2 7
C2+ C1+
2.2u16 3 6 R133
C2- VIN
4 5 47
VoUT GND
VOLTAGE
DOUBLING
INVERTER
R134
0
D E
D15-18
LCD BACKLIGHT
CN8
2 1
/LCDRST 4
3
C33 47p
/WR 6
5
C34 47p
A0 8
7
C35 47p
VLCDLED
33M 10
9
C36 47p
D0 12
11
C37 47p
D1 14
13
C38 47p
D2
16
15
C39 47p
D3
18
17
C40 47p
D4
20
19
C41 47p
D5 22
21
C42 47p
D6 24
23
C43 47p
D7 26
25
C44 47p
LCDCNT 28
27
C20 47p
KEYo0 30
29
C21 47p
KEYo1
C22 47p
KEYo2 32
31
C23 47p
KEYo3
C24 47p
/KEYI0 34
33
C25 47p
/KEYI1
47p
C26
/KEYI2 36
35
C27 47p
/KEYI3
C28
47p
/KEYI4 38
37
C29 47p
VKEY 40
39
42
41
44
43
C138 47p
5A
INTMIC 46
45
ME 48
47
50
49
MIC