Kenwood TK-2180 Service Manual page 56

LCD ASSY
(B38-0900-05)
3.51V
SIDE KEY
SECTION
CN507
E40-6410-05
SW1 5 SW1
PTT 4 PTT
GND 3 GND
2 K1
K1
SW2 SW2
1
X54-3470-XX D511 D512
-10 K NO NO
-11 K2 B30-2215-05 B30-2215-05
DISPLAY UNIT
(X54-3470-XX)
CN508
E40-6413-05
C524
4.7u16
VOLTAGE
C556
REGULATOR/LCD
IC501
1000p
XC6201P352MR
C523
4
C555
NC2 NC1
4.7u16
3.51V
1u
VSS
R573 5
S D
VoUT VIN
470k Q505
2SJ144(Y)
G
CONTRAST CONTROL
R574
R547 R545 R546 R544
0 39k 470k 82k 150k
5
2Y GND
6
3A
2A
7
1Y 3Y
8
VCC 1A
IC502
HD74LV2G34AUS
IC503
4 HD74LV2G34AUS
5
GND
2Y
LCD CONTROL
6 3
3A 2A
7 2
3Y
1Y
1
8
VCC 1A
LCD CONTROL
D513 D514 D515 D516 R524 R525 R526
NO NO NO NO NO NO NO
B30-2215-05 B30-2215-05 B30-2215-05 B30-2215-05 390 390 390
3
2
1
4.98V
5M 5M
LCDRST LCDRST
4
3
LCDRS LCDRS
2
1
CLK CLK
DATA DATA
LCDCS LCDCS
SW1 SW1
PTT PTT
SW2 SW2
2SC4617(S)
R518
330
C508
470p
Q501,502
BACK LIGHT
CONTROL
CP501
1k*2
R563 1k
R564 1k
CP503
1k*2
S A B C
S505 S511
S506 S516
CP504
KEY CONTROL
1k*2
R565 1k
R566 1k
CP506
1 2 3 1k*2
S507 S512 S517
4 5 6
S508 S513 S518
7 8 9
CP507
S514 S519
S509
1k*2
0
* #
S515
S510 S520
R567 1k
R568 1k
1k
R501
R500 1k
D501,502,511-520
Q502
D501,502,511-516 517-520
KEY BACK LIGHT
R517 2SB1132(Q,R) B30-2215-05 B30-2210-05
0
LED ON:5.0V
Q501
OFF:2.7V
D500
CONTRAST
CONTROL
C522
1000p
KEY
PROCESSOR
IC500
BU2099FV
1 VSS
20
VDD
2 NC
19
OE
3 DATA 18
SO
4 CLK
17
Q11
5 LCK
16
Q10
6 Q0 15
Q9
CN511
7 Q1 14
Q8 Q504
8 Q2
13
Q7 2SK1830
9 Q3 12
Q6
10 Q4 11 LCD RESET
Q5
CP509
1k*2
CN510
MIC500
T91-0579-05
INT MIC
(MAIN)
CN509
E40-6413-05
1
2
3
4
LCDRS
AGND 5
ME 6
MIC 7
PTT 8
SPSTB 9
CLK 10
DATA 11
KI1 12
KI2 13
14
SB2 15
16
DGND 17
LCDCS 18
LCDRST 19
L555
5M 20
L92-0163-05