Display Unit (X54-3540-10) : Tk-7182H - Kenwood TK-7180H Service Manual

A
TK-7180H/7182H

DISPLAY UNIT (X54-3540-10) : TK-7182H

1
4.9V
[Left Up]
POWER
[Left Down]
2
VOLTAGE
REGULATOR/5V
IC901
XC6201P502PR
3
VIN VOUT
VSS
2
8C SW
Q902
12A02CH
7.8V
3
8C SW
CONTROL
Q904
DTC114EE
4
R:0V
T:4.9V
5
7.9V
J901
E08-0877-05
1 DM
6
5 HK
2 MIC
6 ME
3 PTT
7 E
4 SB
8 BLC
D931-933
SURGE
PROTECTION
7
84
X54-354 1/2
B
SCHEMATIC DIAGRAM
[A] [C]
[S] [B]
5.0V
L904
1
C921
0.01u
C922
0.01u
R916
56k
C923
680p
R911 R912
4.7k 4.7k
Q906 R:0V
Q905
BUSY:4.9V
DTC114EE DTC114EE
BUSY
TX
INDICATION
INDICATION
LED SW
LED SW
BUSY
TX
D908
B30-2151-05
TX/BUSY
INDICATION
Q901,903
HOOK SW
Q903
Q901
DTC144EE
DTC144EE
C909
100p
SP2
C
[Right Up]
[Right Down]
49
KS6
50
R932 0
KI1
51
R933 0
KI2
52
R934 0
KI3
53
R935 0
KI4
54
R936 0
KI5
55
(TEST)
56
VDD
4.7k
R913
57
VDD1
R914 4.7k
58
VDD2
R915 4.7k
59
VSS
60
OSC
61
DO
62
CE
63
CL
64
DI
R907
10k
470
R901
L901 1u
R908
2.2k
R902
0
1u
L902
R903
1k
DA204U
SURGE
PROTECTION
D
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
LCD DRIVER
SEG25
IC902
LC75854W
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
ISOLATOR
L903
D904
1SS388
D903
MINISMDC020
CURRENT
LIMITER
D906
VOLTAGE
PROTECTION
E
32
SEG[32]
31
SEG[31]
30
SEG[30]
29
SEG[29]
28
SEG[28]
27
SEG[27]
26
SEG[26]
25
SEG[25]
24
SEG[24]
23
SEG[23]
22
SEG[22]
21
SEG[21]
20
SEG[20]
19
SEG[19]
18
SEG[18]
17
SEG[17]
BLC
DIMM
LCDDO
LCDDI
LCDCLK
LCDCS
PTT
8C
PSW
RXD
DM
MIC
TXD
ME
SB