Kenwood TK-7180H Service Manual page 92

DISPLAY UNIT (X54-3540-10) : TK-7182H
4.9V
POWER [Left Up] [A] [C] [Right Up]
[Left Down] [S] [B] [Right Down]
R932
R933
R934
VOLTAGE R935
REGULATOR/5V
R936
IC901
XC6201P502PR
5.0V
3 1 L904
C921
VIN VOUT
4.7k
R913
0.01u
VSS
R914 4.7k
2 C922
R915 4.7k
0.01u
8C SW
R916
Q902
12A02CH
56k
C923
7.8V
680p
8C SW
CONTROL
Q904
DTC114EE
R911 R912
4.7k
4.7k
Q905 Q906 R:0V
BUSY:4.9V
DTC114EE DTC114EE
R:0V
T:4.9V
BUSY
TX
INDICATION
INDICATION
LED SW
LED SW
TX BUSY
D908
B30-2151-05
TX/BUSY
INDICATION
7.9V
Q901,903
HOOK SW
Q903
J901
Q901
DTC144EE DTC144EE
E08-0877-05
1 DM
R901
5 HK
2 MIC L901
6 ME
3 PTT
R902
7 E
L902
4 SB
8 BLC
R903
C909
100p
D931-933
SURGE
SP2
PROTECTION
49 32
KS6 SEG32
31
0 50
KI1 SEG31
0 51 30
KI2 SEG30
52 29
0
KI3 SEG29
28
0 53
KI4
SEG28
54 27
0
KI5 SEG27
55 26
(TEST) SEG26
25
56 LCD DRIVER
VDD
SEG25
IC902
57 24
LC75854W
VDD1 SEG24
23
58
VDD2 SEG23
59 22
VSS SEG22
60 21
OSC SEG21
20
61
DO SEG20
62 19
CE SEG19
63 18
CL SEG18
17
64
SEG17
DI
R907
10k
470
1u
R908
ISOLATOR
2.2k D904 L903
0
1SS388
1u
D903
1k
MINISMDC020
CURRENT
LIMITER
D906
DA204U
SURGE
VOLTAGE
PROTECTION
PROTECTION
LCD (B38-0915-05)
SEG[32]
SEG[31]
SEG[30]
SEG[29]
SEG[28]
SEG[27]
SEG[26]
SEG[25]
SEG[24]
SEG[23]
SEG[22]
SEG[21]
SEG[20]
SEG[19]
SEG[18]
SEG[17]
BACKLIGHT SW
Q908
12A02CH
BACKLIGHT
SW CONTROL
Q907
DTC114EE
BLC BLC
5.0V
DIMMER SW
Q909
2SK2009
DIMM DIMM
5.0V
LCDDO LCDDO
LCDDI LCDDI
LCDCLK LCDCLK
LCDCS LCDCS
PTT PTT
8C 8C
PSW PSW
RXD RXD
DM DM
MIC MIC
TXD TXD
ME ME
SB SB
7.8V
R922
100
D909-920 D921-930
LCD BACKLIGHT
KEY BACKLIGHT
7.9V
CN902
E40-6372-05
DM 30
GND 29
RXD 28
TXD 27
NC 26
NC 25
NC 24
GND 23
LCDDO 22
LCDDI 21
LCDCLK 20
LCDCS 19
PTT 18
GND 17
ME 16
MIC 15
GND 14
GND 13
PSW 12
NC 11
13.6V
SB 10
SB 9
8C 8
GND 7
SPO 6
SPO 5
SPO 4
SPO 3
SPO
2
SPO 1
GND
1
CN901
SPO 2
E40-5704-05