Kenwood TKR-851 Service Manual page 83

F
DISPLAY UNIT (X54-3330-21) (A/2)
CP502
470*4
Q518
UPA672T
DC SW
Q519
UPA672T
DC SW
CLK
SOE
DC SW
Q503
UPA672T
UPA672T
BUSYC
POWLEDC
Q507
UPA672T
DC SW
DAT
PTT
HK
5M
VLI
SB
Q501
2SC4116(Y)
R508
LEVEL
CONTROLLER
Q502
2SA1586(Y,GR)
MIC
R507
6.8k
R506
LEVEL
CONTROLLER
10k
MIG
G
SCHEMATIC DIAGRAM
CP503
LA-501DD
470*4
1
5
7SEGMENT
C520
SHIFT
Q521
REGISTER
UPA672T
DC SW
9
QS
10
Q'S
11
Q8
12
Q7
13
Q6
14
Q5
15
OE
16
VDD
BU4094BCFV
DC SW
DC SW
Q504
DC SW
Q508
DTA114EUA
DC SW
Q506
DTA114EUA
Q509
DTA114EUA
DC SW
DC SW
Q510
DTA114EUA
Q511
DTA114EUA
DC SW
D501
HSM88AS
C504
1k
0.1u
AF DETECTOR
D502
HSM88AS
C505
0.1u
AF DETECTOR
H
D507
CP504
470*4
10
6
DC SW
0.01u
8
VSS
7
Q4
6
Q3
5
Q2 DC SW
4
Q1
3
CLK
2
DATA
1
STRB
IC505
D503
B30-2151-05
R516
TX
1.2k
1/2W
LED
R517
D504
820
B30-2151-05
1/2W
CALL
R518
LED BUSY
1.2k
1/2W
MAIN DC
R519
BACKUP
1.2k
1/2W
R520
D505
820
B30-2151-05
1/2W
LED
C508
0.1u
1
8
AOUT +V
2
7
A-IN BOUT
3
6
A+IN B-IN
4
5
-V B+IN
IC501
NJM4558E
MIC AMP
I
TKR-851
VOLTAGE REGULATOR
IC506
TA78L05F
1 3
OUT IN
COM
2
VOLTAGE REGULATOR
IC507
TA78L05F
1
3
OUT IN
COM
2
S507
CN502
13.10V
20
SB
19
SB
18
NC
17
GND
16
PSW
15
DAT
14
CLK
13
STB1
12
PTT/TXD
11
SOE
10
HK/RXD
9
R529 1k K1
KEY1
8
R530 1k K3
KEY3
7
R531 1k K2
KEY2
6
R532 1k K5
KEY5
5
R533 1k K4
KEY4
4
5C
3
VLI
2
MIC
1 MIG
X54-333 2/2
J
1
2
3
4
5
6
7
73