Schematic Diagram; Display Unit (X54-3480-10) : Tk-7180H - Kenwood TK-7180H Service Manual

A
TK-7180H/7182H

DISPLAY UNIT (X54-3480-10) : TK-7180H

1
A
FKEY[1] FKEY[5]
B
FKEY[2] FKEY[6]
C
FKEY[3] FKEY[7]
S
2 FKEY[4] FKEY[8]
POWER
4.97V
3
4
5
VOLTAGE
PROTECTION
6
C910
4.61V
100p
5.02V
J901
8
DM
7
HK
6 MIC
5 ME
4
PTT
3
E
2
SB
1
BLC
13.3V
T:0.01V
R:5.02V
D931,932
VOLTAGE
SURGE
7
PROTECTION PROTECTION
82
X54-348 1/2
B

SCHEMATIC DIAGRAM

CP911
100*2
CP910
100*2
CP909
100*2
CP908
100*2
FKEY[9]
CP907
100*2
FKEY[10]
CP906
100*2
FKEY[10]
CP905
FKEY[9]
100*2
FKEY[8]
CP904
FKEY[7]
100*2
FKEY[6]
CP903
FKEY[5]
100*2
FKEY[4]
CP902
FKEY[3]
100*2
FKEY[2]
CP901
FKEY[1]
100*2
VOLTAGE
REGULATOR/5V
IC901
TA78L05F
5.05V
3 1
7.84V
IN OUT
COM
2
Q910
8C SW 12A02CH
7.84V 7.84V
7.10V
Q911
DTC114EE
8C SW
CONTROL
0.01V
Q901 Q902
DTC144EE DTC144EE
Q901,902
HOOK SW
C914
100p
C911
R909
100p R901
1k
47k
R910
R903
0
47k
R904
SURGE
1k
PROTECTION
5.03V
D905
DA204U
SP2
D901 D933
SURGE
PROTECTION
C
76
S17
77
S16
78
S15
79
S14
80
S13
81
S12
82
S11
83
S10
84
S9
85
S8
86
S7
87
MICROPROCESSOR
S6
88
IC902
S5
89
30302M88Z7GU
S4
90
S3
91
S2
92
S1
93
NC
94
AVSS
95
NC
96
VREF
97
AVCC
98
NC
99
NC
100
NC
5.04V
C922 C924
0.01u
10p
C920
100p
X901
L77-1956-05
CURRENT LIMITER
D903
MINISMDC020
D E
50
NC
49
NC
48
NC
47
NC
46
NC
45
NC
44
NC
43
NC
42
NC
41
NC
40
NC
39
NC
38
NC
37
NC
36
NC
35
NC
34 R944
HK/RXD
33 0
NC
32
NC
31
DM
30
NC
29
PTT/TXD
L909
28
TXD2
27 L908
RXD2
26
NC
TX BUSY
INDICATION INDICATION
LED SW LED SW
Q904 Q905
T:4.80V
DTC114EE
R:0.01V DTC114EE
TX
BUSY
D907
B30-2151-05
TX/BUSY
INDICATION
SW_8C
LCDRST
LCDCS
LCDCK
LCDDT
RX
TX
5C
RST
ME
PSW
SB
8C
BLC1
DIMM
R:0.01V
BUSY:4.83V