Kenwood TK-90 Service Manual page 133

A B C D
TK-90
PC BOARD / PC
1
TX-RX UNIT (X57-7210-20) Component side view (J79-0007-09)
2
G
A9
5D
L859
CP855
RXD1
3 CP862
TXI
R913
RXI
INDI
R975
R974
C8
4
TXAO 1
C4
RXAO
INDI
C2
CODE8
CODE4
C1
CODE2
CODE1
RXO RXAI
SCR
PTT
SCR
8D
5
GND
PTT
TXAI
NC 14
V+
CN257
8D
G
TXO
C874 +
6
C879
7
8
+
9
X701
TCXO
10
C347 +
R345
R346 C341 R343 C340
Q327
R353
R349 L327
C797
11
C345
CN227
NBL
L326
R338
R332
12
1 6
R331
C722
3 4
R333
L709
NB C331 L325
CN226
L321
R322
W321 C714
R329
L707
R326
L703
C324
13
C325 C710
R327 R702
CN242
LO2
14
E F G
板
CN14
5 4
IC854
R980
CN157
8 1
R901
CP857
C896
+ VR852
C923
CP851
C871
CP861 CP856 CP853 CP860 CP859 CP858
1 TT
C902
R910 TS
102 65 8
3 GND
103 64
R909
R914
14
Q603
Q421
R606
IC855
CP422
+
C607
R896 R430
C565
128 39
+
1 38
C925 CP874
CP876 C929 C922
CP878 R976
R916
C423
R926 R921 C606
CP877
D602 D601
C937 CP421 C605 R608
CP875
C877 X851
C604
CP880
C950
R930 D870 C609
C945
R927 R434
R602
R933
C433
CN11 Q602 Q601
14V
C875
Q423
CN252
R439
CN258
TONE
C435
C432
C434
+ R445
+
R446
CN263 AO AI CN259
R596
BEEP
CN264
C566 R586
C551 R553 C553 R557 C554 R572
D522
1 14 1 14 1 14
IC552
IC551 IC553
7 8 7 8 7 8
CN266 CN265 +
C977 R960
AI AO
CN268
BRD 1 8
CN267 IC863
1 14
BRC 4 5 C942 C958
IC865
CN15
C980
+
C848
CN253
7 8
FRQ
+
R810
+
C981
R952
CN12
A7
C815
C808
C764 CN261
L741 DET
R766
1 16
C496
R498
C778 C847 C837
IC702 C801 1 8
IC453
8 9 CN241 4 5
LO1 W701
R772
LO1
C493 R496
Q712
1 8
L704
IC452 4 5
R494
R707
R714
C737 R711
L717
L453
C716
1 16 C721
R486
IC701
C481
+
C727
8 9 R725
C735
C746
Q706
R776 R732
C471
R740
C785
+ C824
C834
C791 C757 R741
L452
C827
C760
C803 R795
R796
R746
R758
Q716
C825
R752
+ 23
C844
R800
1 4
Q717
R803 R799 C835 R802 R808 CN256
IFGC
A8
CV
R804
R767 L724 R768 L725 L451
CN243
CN237
AGC
D701 D702
23 R455
Q451
L740 1 4 R271
TC703 TC702 C454
R456
L732 L733
C830
R794
C806 C807
L735 L736
R790
Q713
D D
G G
Q714
S S
C816 R785 C817 R787 R276
W702
C845
LO2
C841
H I J K
TX-RX UNIT (X57-7210-20) Component side view (J79-0007-09)
12 AUX3 1
11
AUX2
GND
AUX1
GND 3 SB
DPTT
RTK
RXD1
TXD1
NC
L1
DEO
GND R857
DI
NC 3 TXD1
1 IGN
RXD1 C6
1 KEY
R858 1
D604
L3 L5
CN250
C612 R617 R620 8A R22
CN249 CN248
RXB
TXB C9
7
+
R8
C631 R643 C627 R635
IC601
Q3
R639 R642
1
R616 R629
R632 +
+
D603 1 SPG
1 24
Q609 SP
A1
G
C636 R651 R650
SB W551
D
C662 R657 R659 C645
S
IC554
TXD0
C626 R636 C628 R644 +
PS C54
R640 R641
L21
12 13 RXD0
R614 R613 PSENSE
5 4 8D
+ R599
IC602
8 1 E
C635 R647 R649 G
MIC
C663 R658 D
C646 L37
S
C610 + R671
11 ME
Q610
C94
12 13
D102
IC555
IC521 A2
C111
C110
1 24
D521
G
R546
D
1 12
S Q460
C105
C543 R536
R106
+
+
C526 + +
CN255
+
5A
L363 +
+
W551
R360 +
CN270
CN240
TP4
CN272
PGC
R390
TP3
L361
CN262 R386 D369
R391
REF CN244
8 7
CAR R377 R402
R429
IC362
R403
C376
R404 C426 +
14 1 R425
R301
C374
C290
D374
Q254
5 4
VR251
IC361 + +
+ C373 R387
8 1
R294 CN260
D366
AMB
VR362
VR252 R424
R295 C368
CN271
TP1 R365
R376
+
+ C365 D373
R297
TH255
Q361 R381
Q365
R388 R385
R444
C371
C439
R288 + C372
Q253
+ 1 8 C377
IC423
R440 R411
4 5
R287
C437 C380
TH253
D372
R435
C238
XF251
C255
C220
TH185
R222
R235 4 1
R258 C256
L195
3 2
D259
Q186
C275
R243
L251
XF252 D185 Q187
D252
R255
C274
R261
C257
D184
C251
R262 C258
C326
L252
C322
OPTION FILTER R324
R256
Q321
W321
R323
C321
L M N O
J79-0007-09
O 1
CN1
RAT
G
J1
C3 EXT. SP
G
+
GND
R1
I 4
R4
C4
C7
GND
C11
CN251 D2
D1
D 14S
S
D3
C18 C26
D4
G
R11
L9
C37
C16
L8
D8 L14 L11
D5
D6
L15
C44
C46
C43
C58 C56
C45
L17
L23 L22
C52 C50 C48 C62
R37
L31 L30 L26
L25
C75 C73 C72
C69
C74 C92 C70 C90 C71 C88
L33
L39 L38
C98 C96 C100
C85
C87
D101
C112
C121
A4
Q103
C125
C130 R126 C137
A3
C119
C117
C114
C126
R158
+ R138 R134
L115
R139 R135
W701
LO1
2
+
A5
1
1 FAN+
2 FAN–
Q992
R991
R993
1 FAN+
Q991
2 FAN–
W702
C181
LO2
L200 R154
R184
R182
C184 R153
R205
R207
R206
R212 R211
R188
C207
R192
C208
R196
CN222
TGC
L189
C194 R194 C196
C185
R213
L186
C200 C193
R215
C213
D182
C191
A6
D183
C197
L190 L188
C212
C205
R216
R209
CN5
P Q R
TK-90
板
PC BOARD / PC
Ref. No. Address Ref. No. Address Ref. No. Address
IC1 4J Q187 12K D7 4L
IC101 7N Q252 13G D8 4L
IC251 10H Q253 11H D9 5L
IC361 9I Q254 9H D10 5M
IC362 9I Q321 13K D11 4M
IC363 8H Q322 13C D12 5L
IC421 5G Q323 12C D13 6N
IC422 10J Q324 12C D14 6L
IC423 11K Q325 11D D15 6M
IC451 10G Q327 11C D16 6M
IC452 10G Q361 10I D17 6L
IC453 9G Q362 10K D18 6N
IC521 6J Q363 10J D19 6M
IC551 7D Q364 9K D20 6L
IC552 7E Q365 10I D101 6N
IC553 7F Q366 11I D102 6K
IC554 5H Q421 4G D103 6M
IC555 6H Q423 6F D104 6L
IC601 4H Q451 12G D107 11M
IC602 5H Q455 11G D182 12M
IC603 4H Q459 10H D183 12L
IC604 4I Q460 7H D184 12K
IC605 5I Q601 6G D185 12K
IC701 10E Q602 6G D251 12K
IC702 9E Q603 4G D252 12J
IC703 11E Q604 4H D253 13K
IC704 9F Q609 4J D254 12J
IC853 6D Q610 6J D259 12H
IC854 3E Q706 11F D321 11C
IC855 4E Q712 9E D363 10K
IC856 5D Q713 13E D365 9I
IC857 5F Q714 13F D366 10K
IC859 7G Q715 12F D367 11K
IC861 8E Q716 11F D369 9J
IC863 7F Q717 11E D370 11I
IC864 8F Q720 8H D371 9K
IC865 8F Q856 5F D372 11I
Q3 4K Q858 8F D373 10J
Q103 6L Q859 8F D374 9I
Q105 8M Q991 10L D521 7H
Q106 8M Q992 10L D522 7H
Q108 8L D1 3N D601 5G
Q109 8L D2 3N D602 5G
Q182 11M D3 4N D603 4H
Q183 12N D4 4N D604 3H
Q184 11L D5 4N D701 12E
Q186 11K D6 4N D702 12F
D704 13E
D705 13F
Component side
D854 3I
Layer 1
D857 2I
Layer 2
D868 6F
Layer 3
D870 5G
Layer 4
D991 10L
Foil side
D992 10L
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14