Kenwood TH-K4AT, TH-K4E PC BOARD
1
TH-K4AT/K4E PC BOARD
1
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Component side view (J72-0884-19 A/3)
2
10
CP1
R31
LV
+
C35
L67
D7
C26
R21
R24
R30
Q4
+
C27
3
C1
4
5
C51
R132
6
7
C186
C189
L45
R131
C188
L46
Q23
C187
L64
C54
C55
8
C166
1
9
R127
C176
IC3
89
C174
R135
C173
R125
X1
R188
R133
16
C33
+
C50
C52
C57
C56
R38
R126
C175
C25
L58
R124
R123
C171
C190
C172
C34
+
C30
C192
C183
C182
C180
C38
C37
C41
C271
C272
R189
Q24
C194
R119
R122
R120
C24
C22
L53
1
IC1
89
R32
C42
R36
+
B
BTEMP
GND
R128
Q22
C191
R134
R118
C170
R90
R351
R35
C116
R117
D15
C126
R116
C169
D16
C66
C125
+
R33
R19
C46
C40
Q21
Q6
R20
R34
C168
16
C45
XF1
C117
R85
C167
R84
C21
C44
Q15
C20
C113
C112
34
C115
R115
D
G
R83
C111
R81
Q14
Q20
S
C43
JIHGFEDCBA
2
6
GND
KYO1
KIN4
D61
D71
D70
TH3
+
R70
C106
1
6
R147
R137
DC IN
R330
R37
J2
D60
D62
D63
D64
D65
SET
MAX DEV
VR5
S
D
Q27
G
R151
R153
R154
C198
R71
R255
GD
R58
C328
C78
R152
C200
R72
C213
R166
1
IC17
45
R167
C339
C211
C349
R324
R168
Q12
R165
C212
C204
+
PTT
C3181
S
S
CN6
8
R159
KYO2
C203
R158
BL
5
C512
C351
C331
R252
R157
C86
TH1
R172
R86
R17
C118
R1
D69
D72
+
R18
C29
CP2
C70
Q13
D
C114
D14
R82
8
C110
C356
1
6
R323
R218
R272
S
Q36
D
G
S
R215
R216
IC2
G
D
S
Q34
G
S
D
R213
G
Q35
R214
C371
C107
R75
C370
45
1
R212
R332
1
KIN1
IM
2
KYO3
8M
C128
C196
R146
C197
R79
D31
KIN4
MIG
R80
LAMP
CN9
GND
R145
R211
R210
KYO0
KIN2
TH2
R78
C109
C108
R76
R139
13
KYO2
KYO1
KIN3
KIN0
14
C372
VR6
DCS BAL
R142
R141
R140
R74
R77
F3
C511
C105
D81
+
C193
C195
F1
34
Q51
R231
R144
R143
R148
VR1
FREQ
11
12
13
14
44
Ref. No. Address
IC1 4D
IC2 8F
IC3 9B
IC6 6M
IC9 9P
IC10 6P
IC11 6Q
IC15 7P
Ref. No. Address
IC17 9I
Q4 4C
Q6 3E
Q12 5J
Q13 7F
Q14 9E
Q15 5E
Q20 10E
Ref. No. Address
Q21 10D
Q22 10D
Q23 6B
Q24 8D
Q27 6H
Q31 6L
Q34 9F
Q35 10F
Ref. No. Address
Q36 10E
Q37 8L
Q38 7K
Q41 9Q
Q47 7S
Q51 4H
Q53 9Q
Q55 5P
Ref. No. Address
Q56 7L
Q57 8Q
D7 4B
D14 8E
D15 9D
D16 4D
D25 6K
D26 7L
Ref. No. Address
D31 9F
D34 7L
D40 7S
D41 7S
D60 3H
D61 3H
D62 3H
D63 3H
Ref. No. Address
D64 4H
D65 4H
D69 3G
D70 3H
D71 3H
D72 3G
D81 10G
JKLMNOPQRS
PTT
2
KIN4
C3181
S
12
S
5
12
R159
04
CN6
8
5
KYO1
KYO2
C203
R158
6
GND
BL
5
D
C512
C351
C331
R252
R157
C86
TH1
R172
R86
R171
C118
R170
C279
C310
Q38
B
E
R335
C258
R234
R203
C368
R217
C257
D25
C280
R246 R248
R223
C253
C247
C248
R204
Q37
J3
MIC
D34
C312
C313
R208
R209
C256
R207
56
+
C249
G
Q31
D
S
R206
R355
Q56
G
D26
D
S
C
C252
IC6
R205
R202
PC BOARD
TH-K4AT/K4E
1
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Component side view (J72-0884-19 A/3)
2
POWER
R276
+
C250
C246
C255
C359
–+
INT. SP
CN2
J4
SP
1
10
L49
+
CP34CP35
COM01
COM1
COM2
COM3
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG3136
C304
C300
6
1
Q55
D
IC10
4
C309
23
1
C302
IC9
S
G
R242
34
1
4
R244
LCD
R237
C360
C311
C305
IC15
C306
R243
Q41
R238
23
C307
8
5
L63
Q53
R328
IC11
C355
R236
C346
1345
C345
1
4
C308
C354
Q57
C344
C347C348
+
C319
C317
R263
R227
R226
C291
C290
5
1
ANT
D40
Q47
34
J72-0884-19 (A/3)
3
4
5
6
D41
7
8
9
10
Layer 1
Layer 2
Layer 3
Layer 4
11
Component side
12
Foil side
13
45
14
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