Kenwood TK-7180H Service Manual page 89

DISPLAY UNIT (X54-3480-10) : TK-7180H
CP911
100*2
A
FKEY[1] FKEY[5]
CP910
100*2
B
CP909
100*2
FKEY[2] FKEY[6]
C CP908
100*2
FKEY[3] FKEY[7] FKEY[9]
CP907
100*2
S
FKEY[4] FKEY[8] FKEY[10]
CP906
100*2
POWER FKEY[10]
CP905
FKEY[9]
100*2
FKEY[8]
4.97V
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
100
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
VOLTAGE
PROTECTION
C910 C914
4.61V 100p
100p
C911
5.02V
J901
R909
100p R901
8 DM
7 HK
1k
6 47k
MIC CURRENT LIMITER
5 ME
R903 R910
4 PTT
3
E 0 MINISMDC020
47k
2
SB
1
BLC
R904
SURGE
1k
PROTECTION
13.3V
5.03V
T:0.01V D905
DA204U
R:5.02V
SP2
D931,932 D901 D933
SURGE VOLTAGE SURGE
PROTECTION PROTECTION PROTECTION
76 50
S17 NC
77 49
S16 NC
78 48
S15
NC
79 47
S14
NC
80 46
S13
NC
81 45
S12 NC
82 44
S11 NC
83 43
S10
NC
84 42
S9
NC
85 41
S8
NC
86 40
S7
NC
87 39
MICROPROCESSOR
S6 NC
88 38
IC902
S5 NC
89 37
30302M88Z7GU
S4 NC
90
36
S3
NC
91 35
S2
NC
92 34 R944
S1 HK/RXD
93 33 0
NC NC
94 32
AVSS NC
95 31
NC
DM
96 30
VREF NC
97 29
AVCC PTT/TXD
98 28 L909
NC TXD2
99 27 L908
NC RXD2
26
NC
NC
5.04V
C922 C924
0.01u 10p
C920
100p
X901
L77-1956-05
D903
TX BUSY
INDICATION INDICATION
LED SW LED SW
T:4.80V Q904
DTC114EE
R:0.01V
TX
D907
B30-2151-05
TX/BUSY
INDICATION
LCD
B38-0888-15
L905
L906
L907
SW_8C SW_8C
LCDRST LCDRST
LCDCS LCDCS
LCDCK LCDCK
LCDDT LCDDT
RX RX
TX TX
5C 5C
RST RST
ME ME
PSW PSW
SB SB
8C 8C
BLC1 BLC1
DIMM DIMM
Q905 R:0.01V
DTC114EE
BUSY:4.83V
BUSY
76
S76
77
S77
78
S78
79
CoM10/S79
80
COM[9] CoM9/S80
81
COM[8] CoM8
82
COM[7] CoM7
83
COM[6] CoM6
84
COM[5] CoM5
85
COM[4] CoM4
86
COM[3] CoM3
87
LCD DRIVER
COM[2] CoM2
7.43V 5.05V 88
IC903
COM[1] CoM1
LC75810T-8726
89
VDD
90
VLCD
91
VLCD0
92
VLCD1
C933
93
VLCD2
0.01u 94
VLCD3
C934
95
VSS
0.01u 96
oSC
C932
97
RES
0.01u R959 10k 98
CE
C935 470p 99
CL
C937 0.01u 100
DI
BACKLIGHT CONTROL SW
D909-920
Q909 7.79V
LCD BACKLIGHT
7.84V 12A02CH
DIMMER SW
Q907 7.10V
2SC2873(Y)
R942
0.66V
47
4.62V
0V
R943
Q906 100
Q913
DTC114EE DTC114EE
DIMMER SW
CONTROL BACKLIGHT
CONTROL
50
S50 S[50]
49
S49 S[49]
48
S48 S[48]
47
S47 S[47]
46
S46 S[46]
45
S45 S[45]
44
S44 S[44]
43
S43 S[43]
42
S42 S[42]
41
S41 S[41]
40
S40 S[40]
39
S39 S[39]
38
S38 S[38]
37
S37 S[37]
36
S36 S[36]
35
S35 S[35]
34
S34 S[34]
33
S33 S[33]
32
S32 S[32]
31
S31 S[31]
30
S30 S[30]
29
S29 S[29]
28
S28 S[28]
27
S27 S[27]
26
S26 S[26]
CN902
GND 30
GND 29
RXD
28
TXD 27
5C 26
NC 25
SHIFT/MODEL 24
GND
23
GND
22
GND 21
GND 20
RST2 19
PSENS
18
GND
17
ME 16
MIC 15
GND 14
GND 13
PSW
12
NC 11
SB 10
SB 9
8C 8
GND
7
D921-930
SPO
6
KEY BACKLIGHT
SPO 5
SPO 4
SPO 3
SPO 2
SPO
1
1
CN901
2 E40-5704-05
SP CONNECTOR