Pc Board; Control Unit (X53-4210-10) - Kenwood TKR-740 Service Manual

A B C D
TKR-740

PC BOARD

1
CONTROL UNIT (X53-4210-10) (A/4)
Component side view (J79-0034-19 A/4)
2
3
R306
B 1
FWD
R305 C303
EXR
R155 C313
CVT
R304 C302
CVR
R303 C301
RD
R302 C300
RSSI
4 RSSI
C60
SPO
C68 +
SPO
R47
SPI
GND
GND
IC13
SPG
SPG 14
5
C88
R124
R329 C160
R154
RRA 1
+
R328 C101
R153
RTA
6
C312
RPTT R327
C311 EXMON IC40
R326
GND
I/O1
C310 R325 +
C309 I/O2 R324
R104
I/O3
C308 R323
C102
I/O4
C307 R322
I/O5
7
C306 R321
I/O6
C305
I/O7 12
C304
R357
C337
8
R356
C336 2 AUXO6 SPM 1
+
AUXO5 RXG
R355
AUXO4 RA R142
R367
C335
AUXO3 RD
R141
R354
AUXO2 TA
R144
C334
+
AUXO1 TD C163
C333 R143
9 TXG DG
R353
R340
NC AUXI3
C332
C330
SC AUXI2
R342
PTT AUXI1 R339 +
C325 MON TXD
C329
NC RXD
R335
R338
NC NC
C327
C328
NC NC
R371
10 30 NC NC 29
C326
C317
R336
R370
C318
11
J79-0034-19 A/4
Ref. No. Address Ref. No. Address Ref. No. Address
12
IC3 10K IC24 8M
IC4 10E IC25 7M
IC5 10L IC27 6M
IC6 10F IC29 10P
13
IC12 10N IC30 7L
IC13 5D IC32 9D
IC17 7H IC36 8D
36
14
E F G
+ W1
C147
C91
+
C207
R78
R123
C125
R100 R196
R194
R197
C143
R757
R199
R200
100
R202 1
R203
C188
R204
R191
R137 R136
C192
C185
R190
R206
IC36
R205
25
R337 R207
26
R208
R209
R133 R132
R210
RPTTI RPTTO
R211
R114 R217
C132
R212
R122
R227
R121
CHECK
+
IC32
L6
R128 W1
+
C137
R29
R28
C20
C19
IC37 8P
IC40 6D
IC45 3R
Q1 7F
Q5 9M
H I J K
R46
CN707
RA
DETO
CN1
DETI
+
C210
CP1
CP2
76
75
75
76
R351
C202
C229
IC30
R295
R350
R349
51
100
50
1
+
C211
CN2
L M N O
PC BOARD
CONTROL UNIT (X53-4210-10) (A/4)
Component side view (J79-0034-19 A/4)
R10
+
TP1
CHECK
TP2
C166 +
TP4
+
IC27
TP3
51
50
4 3 R291 R181
IC25
5 1
R176
R171
+ C180
IC24
26 TP5
25
R90
CODE4
C227 C204
C228 C205
R91 CODE3
R92 CODE2
X2
R93 CODE1
S
R344 D R86 OPT
G
Q5
L12
C123
+
R135
R134
+
C83
IC12
C77
R70
+ +
R69
R66
P Q R S
TKR-740
IC45
1 10
R7
+ + +
+ +
RAO RAI 1 SPI
SPG
R118
VLO
VLI
GND
C182
BLT
IC37
NC
HOK
PTT
EXR
SW1
SW2
B
GND B
B
SW3
SW4
TXO R117 TXI
TEST
SW5
ANI
SW6
EN7
MDAT
PTTO R115 PTTI
DT
CK
IC29
R116
GND
MI
TESTO TESTI
26 MIG
+ +
Component side
Layer 1
Layer 2
Layer 3
Layer 4
Foil side
37
1
2
3
4
5
6
7
8
9
10
11
12
13
14