Kenwood TK-2180 Service Manual page 55

F
DISPLAY UNIT (X54-3470-11)
A
S505
S506
1
S507
4
S508
7
S509
*
S510
5M
LCDRST
LCDRS
CLK
DATA
LCDCS
1k
R501
1k
SW1 R500
PTT
Q502
R517
2SB1132(Q,R)
0
SW2
Q501
2SC4617(S)
R518
330
C508
470p
Q501,502
CONTRAST
CONTROL
BACK LIGHT
CONTROL
Note : The components marked with a dot (
G
SCHEMATIC DIAGRAM
B C D
S511
S516
KEY CONTROL
2 3
S512
S517
5 6
S513 S518
8 9
S514
S519
0
#
S515
S520
D501,502,511-520
D501,502,511-516
KEY BACK LIGHT
B30-2215-05
LED ON:5.0V
OFF:2.7V
D500
• ) are parts of layer 1.
H
CP501
1k*2
R563 1k
R564
1k
CP503
1k*2
CP504
1k*2
R565 1k
R566 1k
CP506
KEY
1k*2
PROCESSOR
1
2
3
4
5
6
7
CP507
8
1k*2
9
10
R567 1k
R568 1k
D517-520
B30-2210-05
L555
L92-0163-05
I
TK-2180
C522
1000p
IC500
BU2099FV
20
VSS VDD
19
NC OE
18
DATA
SO
17
CLK Q11
16
LCK
Q10
15
Q0 Q9
CN511
14
Q504
Q1 Q8
13
2SK1830
Q2 Q7
12
Q3 Q6
11 LCD RESET
Q4 Q5
CP509
1k*2
MIC500
CN510
T91-0579-05
INT MIC
(MAIN)
E40-6413-05
LCDRS
ME
MIC
PTT
SPSTB
CLK
DATA
KI1
KI2
SB2
DGND
LCDCS
LCDRST
5M
J
1
2
3
4
CN509
1
2
3
5
4
5
AGND
6
7
8
9
10
11
12
13
14
15
16
17
6
18
19
20
7
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