Kenwood TM-271A Service Manual page 31

A B
TM-271A/271E
1
TX-RX UNIT (X57-685X-XX) Component side view (J72-0906-09)
2
3
4
5
GND
6
PR9
SQC
7
PKD
PR1
8
9
IC252
10
11
+
C44
12
R35
+
C51
C50 C52
C49
13
+
C45
30
14
C D
PC BOARD
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
EXT. SP
F1
E
PKS
1
C83
R82
C82
5M
C271
R273
CNVSS
R101
C276
RESET
Q254
R277
10
C274
Q36
R37
CN1
E F
C29
+B
C519
C517
C518
R272
D251
C272
R274
R275
C270 +
R271
POWER
7
PKD
R81
GND
R237
PR9
R248
PR1
R151
TXD
PKS
R152
+
SQC
RXD
GND 1
R250
S S
R268 D D
G G
Q253
Q252
D4
D3
L201
R1
R200
G H
C527
DC
C528
C530
C529
S
G Q503 D
S
R518
R520
C522 R519
RF
R422
CV
C416
+
C425
R421
+
C424
R418
+
Q403
C422
I J
+
C533
C536
R
5
IC5
8
8T
R521
R5
IC204
4 3
5 1
4 3
5 1
IC205
C414 R409
+
L404
C411
C403 R408
11 10
C402
C401
+
IC401
D402
20 1
R412