Kenwood TH-K20A Service Manual page 38

A B C D
TH-K20A/K20E
1
TX-RX UNIT (X57-821X-XX) 0-11: K 0-20: M 2-71: E
Foil side view (J79-0325-09)
2
3
4
5
C345
6
VR300
7
Q404
Q403
8
R453
C424 R452
S419
9
10
Ref. No. Address Ref. No. Address
IC1 8Q Q5
11
IC200 8M Q6
IC302 6G Q7
IC303 7F Q101
IC400 8I Q102
Q103
Q1 6Q
12
Q2 4P Q104
Q3 5Q Q200
Q4 4Q Q201
13
14
E F G
PC BOARD
S417
S418
MONI
PTT
C141 C139
C137
C134
C138
L109 C136
L112
R119
C146
R319
C318
R320
5 4
+ IC302
1
8
R387
C317 R386
C357
C320 R322
C327
R325 R326
C324
R327
R329
5 4
R330
IC303
8 1
C325 C328 R328
C347
J300
J301
Ref. No. Address Ref. No. Address
Ref. No. Address
3Q Q202 8N D2 5P D11
8R Q203 6M D3 6P D101
Q204 6J D4 5Q
9Q D102
4N Q307 4O D5 5Q D103
Q401 9J
3N D6 5P D104
4L Q402 8J D7 4P
D105
4N Q403 8C D8 3P D200
8M Q404 7C D9 5R D201
9O D1 5P D10 6R D203
H I J K
R444
L115
L113
L214
C265
D104
C162
D203 C161
C152
C261
R243
R121
C154
C153
C254
C253
C247
Q204
G S
G D
R236
C255
R239
R401 R403
C427
C428
C406
C402
C204
C407
R324
C386
C404 R382
C405
R439
CD200
C418
C419
R332
R437
C331
Q401
Ref. No. Address
6Q D204 6L
4F D401 8J
4F
4G
5H
4G
6K
6K
5I
L M N O
PC BOARD
TX-RX UNIT (X57-821X-XX) 0-11: K 0-20: M 2-71: E
Foil side view (J79-0325-09)
C108 C105 R107
L104
C148
C147
R103
C113
R101 C101
R111
C102
C109
C112
C110
R115
C115
C382
D Q103 G
C150
C155
Q307
R124
L204
C266
C230
C233
L205
C229
R246
R229
R225
G S
L206
G D
C228
C227
C244 Q203
R228
R226
R221
C272
R419
CF200
C203
R204
R252
R200
R203
R253
C206
R206 C37
C211
+
R28 C38
8 1 C201
IC200
L202 X1
R207
9 16
C215
R249
Q201
C209
C219
C214
C220
R208
R210
J79-0325-09
P Q R S
TH-K20A/K20E
R24
C34
D8
R22 Q5 C26
R26 L11 R20
C36
R23
R19
C29
R25
C13
C16
D6
C5
R10
R11
L4
C18 Q3 D
G
S
R8
C7
R18
C15
L2 C10
D1
L6
D9
C17
D10
C19
L5
R12 R47
C20
Q1
C2
C6
R48
D3
D11
R4
L3
R7
R9
R33
R36
R32 R31
C42
R30
Q7
C50
Component side
Layer 1
Layer 2
Layer 3
Layer 4
Foil side
1
2
3
4
5
6
7
8
9
10
11
12
13
14