Schematic Diagram - Kenwood TK-2180 Service Manual

A
TK-2180
LCD ASSY
1
(B38-0900-05)
2
3
4
5
SIDE KEY
SECTION
SW1
PTT
GND
K1
SW2
6
7
50
X54-347 1/2
B

SCHEMATIC DIAGRAM

3.51V
CN507
E40-6410-05
SW1
5
4 PTT
GND
3
K1
2
1 SW2
X54-3470-XX D511 D512
-10 K NO NO
-11 K2 B30-2215-05 B30-2215-05
C
CN508
E40-6413-05
C524
4.7u16
C556
1000p
C523
C555
4.7u16
1u
R573
S D
Q505
470k
2SJ144(Y)
G
CONTRAST CONTROL
R574
R546 R544
R547 R545
0 39k 470k 82k 150k
IC502
HD74LV2G34AUS
4
5
GND
2Y
3
6
2A
3A
7 2
3Y
1Y
1
8
1A
VCC
LCD CONTROL
D513 D514 D515
NO NO NO
B30-2215-05 B30-2215-05 B30-2215-05
D
DISPLAY UNIT
(X54-3470-XX)
VOLTAGE
REGULATOR/LCD
IC501
XC6201P352MR
4
3
NC2
NC1
2
3.51V
VSS
5
1
VoUT
VIN
4
5
2Y GND
6 3
3A
2A
7 2
1Y
3Y
1
8
VCC 1A
IC503
HD74LV2G34AUS
LCD CONTROL
D516 R524 R525 R526
NO NO NO NO
B30-2215-05 390 390 390
E
4.98V
5M
LCDRST
LCDRS
CLK
DATA
LCDCS
SW1
PTT
SW2