Kenwood TM-271A Service Manual page 33

A B C D
TM-271A/271E
PC BOARD
1
TX-RX UNIT (X57-685X-XX) Component side view (J72-0906-09)
0-10 : TM-271A (K) 0-21 : TM-271A (M2) 0-22 : TM-271A (M3)
0-23 : TM-271A (M4) 2-71 : TM-271E (E)
J1
2
EXT. SP
3
4
F1
5
GND
6
PR9
SQC
7
PKD
PR1 PKS
8
1
9
R82
5M
CNVSS
IC252
10
R101
C276
RESET
Q254
R277
11
10
C274
Q36
+
C44
12
R35
+
C51
R37
C52
C50
C49
13
+
C45
30
14
E F G
C527
C528
C29
E
+B
S
G Q503
S
R518
C519
C522
C517
C518
RF
R272
D251
C83
C272
C82 R274
R275
C271
R273
C270 +
R271
POWER
PKD 7
R81
GND
R237
PR9
R248
PR1
R151
TXD
PKS
R152
+
SQC
RXD
GND 1
R250
S S
R268 D D
G G
Q253 Q252
C425 +
D4
+
D3 C424
L201
+
R1
R200
CN1
H I J K
TX-RX UNIT (X57-685X-XX) Component side view (J72-0906-09)
0-10 : TM-271A (K) 0-21 : TM-271A (M2) 0-22 : TM-271A (M3)
0-23 : TM-271A (M4) 2-71 : TM-271E (E)
DC
C530
+
C529
G Q504
C533
D
C536
R520 R531
R519 R530
D608
PC
5 4
IC501
R605
8 1
8T
R521
R528
IC204
4 3
5 1
4 3
5 1
IC205
C414 R409
+
L404
C411
R408
C403
R422
CV
X401
11 10
C416
C402
R421
L401
C401
+
L403
IC401
C406
D402
R418 R407
Q403 20 1 R323
C422 R412
Q302
L M N O
PC BOARD
C574
C576
C546
C545
D
TH97
C97
C550
TEMP1
C554
8T
R350
R161 D202
R162
+ C205
C162
C163 C165
+
C164
+
C204
R204
C202
R206
BPF
+
C442
R203
R166
R205
R165
Q201
+
C356
R164
R404
AFV
C354 R302
R315
R304
R354
+
R314
C303
C304 C318
C312
C305 R316
Q351
C311
R351
C315
C310
C316 R318
C409
C351
R313 C317
R311
R322
C128
P Q R
TM-271A/271E
Ref. No. Address
IC33 12B
IC161 1N
IC201 10P
IC202 11P
IC203 12P
C615
C614
IC204 10I
IC205 11I
IC252 10B
C613 IC401 12J
IC501 8J
Q35 13C
Q36 12C
Q201 11O
Q252 12F
C608
Q253 12F
Q254 11D
Q255 10D
Q302 13K
C605
Q351 12N
Q354 9O
Q402 12H
D603
Q403 13H
Q503 6G
Q504 5K
D3 12E
TEMP2
D4 12E
C555
D5 11E
D6 11E
L509
C389
D201 11O
R379
D202 10O
D251 9E
D302 12O
D303 12O
D401 12J
Q354
D402 13I
G
R221
+
D C220
S
D503 8J
C208 R208
D602 7P
1 8
C207 D603 7Q
IC201
4 5
R210
D608 8L
C212
1 8
IC202
4 5
R227
R228
+
D303
R233 C231
C232 R232
+ C217
C233 +
Component side
C225 +
Layer 1
C218 +
R219 R226 Layer 2
R218
Layer 3
Layer 4
J72-0906-09
Foil side
S
1
2
3
4
5
6
7
8
9
10
11
12
13
31
14