Kenwood TK-5810 Service Manual page 111

F
SCHEMATIC DIAGRAM
TX-RX UNIT (X57-7270-XX)
TX2RX2 Q410
RN47A4-F
L411 R467
1k
L409
TX1RX1
Q409,410
VCO1/2 SW
Q409
RN47A4-F
TX
L410 R466
1k
RX
ASSIST
MO
CV
* *
R232 L220
MCF ADJ
CN202
D208,209
C244
IF
FILTER
SW
D208
RN142S
L212 C239
150n
68p
D209
RN142S C245
MO
X57-7270-XX D402 D403 D405
-10 K 1SV305F HVC376B BB664
-11 K2 1SV282-F NO 1SV282-F
X57-7270-XX R479 R481 R482 R486
-10 K 390 390(D) 470(D) 150
-11 K2 470 560(D) 270(D) 180
G
[ K ] 400 - <485MHz:7.00V
485 - 520MHz:0V
[K2] 400 - <435MHz:7.00V
435 - 470MHz:0V
RXVCO 1
[ K ] 450 - <485MHz:0V
485 - 520MHz:7.00V
[K2] 400 - <435MHz:0V
435 - 470MHz:7.00V
RXVCO 2
D413,414,416,417,421
VCO CONTROL
L416 R478 L427
1.0u
0
L417
R477
0
D408,409,411,412,422
2.13V VCO CONTROL
L415 R474 L422
0 1.0u
L414
L408 R473
0
D402,403,405-407
VCO CONTROL
R470
0
L413 R471 L418
1.0u
0
L412
7.65V
*
LOCAL AMP
Q203
0.93V
2SC3357-A(RF)
* *
L221 C260
*
C263
0.34V
W:0.06V
N:4.96V
NARROW
XF200
D210,211
L71-0626-05
C256
IF
FILTER
8p 9p
SW
D210
RN142S
L217 L222
L34-4748-05 L34-4749-05
WIDE
XF201 D211
L71-0625-05 RN142S
C257
7p
8p
L218 L223
L34-4748-05 L34-4749-05
W:3.33V
Q201
N:0.10V RT1N141U-T111
DC SW
D408 D409 D413 D414 L220 L221
1SV305F HVC376B 1SV305F HVC376B 15n 15n
1SV282-F NO 1SV282-F NO 22n 22n
R487 R489 R490 R493 R494 R499 C251 C252
100 220 100(D) 220(D) 100(D) 27k 5p 10p
0 270 0 330(D) 0 22k 8p 12p
H
TK-5810
RIPPLE FILTER
7.21V 7.92V
Q412
2SC4116(GR)F
R484
10
*
R476 R481 L438
1.0u
0
*
C497
* * *
C496 D416 C499 L437
1SV282-F
L429
1.0u
*
R482 L435
1.0u
*
C491
D411
*
C489 C494 L434
33p(G) 1SV282-F 7p
L425
1.0u
*
C490 L424 R499 R480
270k
10u10
MODULATOR
*
R479 L432
1.0u
* * * *
C485 D405 C488 L431
L420
1.0u
R242
* *
R240 C266
7.88V
R251
6.8k
IF AMP
7.56V
Q204
0.91V
2SC3357-A(RF)
C270
C268 L225
0.01u
100p 680n
0.16V
DC SW
Q202
RT1P141U-T111
L224 L431 L434 L437
18n L34-4607-15 17.5n L34-4608-15 22n L34-4608-15 22n
39n L34-4608-15 22n L34-4609-15 28n L34-4609-15 28n
C253 C260 C263 C266 C485 C488 C491 C492 C496
5p 5p 12p 470p 100p 12p 1p 470p 100p
8p 10p 470p 100p 27p 15p 0.5p 680p 39p
I
BG /5810H
( )
7.62V
RXVCO 1
VCO 1/2 L
STR H
Q415
0.73V
VCO OSCILLATION
*
C522
Q415
2SK508NV(52K) *
C524 R494
0.5p
RXVCO 2
VCO 1/2 L
STR H
Q414
VCO OSCILLATION
C516
6p
Q414
*
2SK508NV(52K) C518 R490
0.5p
R488
100k
TXVCO
STR L
C510
Q413
4p
VCO OSCILLATION
Q413
*
2SK508NV(52K) C512 R487
0.5p
W:0.06V
N:4.96V
NARROW
D212,213
XF200
L71-0626-05
C273
IF
FILTER
9p
SW
D212
RN142S
L227 L229
L34-4748-05 L34-4749-05
WIDE
D213
RN142S XF201
L71-0625-05
C274
8p
W:3.33V
N:0.10V
L228 L230
L34-4748-05 L34-4749-05
L441 R231 R232 R233 R236 R237 R239 R240 R241
18n 180 33 180 220 10k 180 33 180
27n 220 22 220 270 1.8k 270 18 270
C497 C499 C502 C514 C521 C522 C523 C527
1.5p 10p 2p 6p 7p 6p 6p 6p
0.5p 9p 2.5p 7p 9p 7p 5p 5p
J
BG
( )
*
C527
Q416
2SC5108(Y)F
BUFFER AMP
RX LO1
D214,215
IF
C281
FILTER
9p SW
D214
RN142S
D215
RN142S
C282
8p
MO
R242 R243
330 18k
33 3.9k
111
X57-727 2/4