Kenwood TKR-851 Service Manual page 67

TX-RX UNIT (X57-696X-XX) (A/2)
* A2 SUB UNIT (TX VCO/PLL) (X58-4810-XX)
D350
FREQUENCY
D354
CONTROL
* L352 MODULATION
TX-CV * R351
(TP102) U-TXVCO
(Used for K,E,K2) CN351
BUFFER
AMP GND 2 8 GND
* C368
Q355
2SC4226(R24) C379 VO 1 7 VO
R353 * L353 * D352 * C356 * L356 * Q350 * C374 R359
* *
4p
FREQUENCY
CN350 CONTROL
GND 1 1 GND
STT 2 2 STT
VCO OSC
STT
8CL 3 3 8CL
8CLT
CV 4 4 CV
U-TXVCO
(Used for K3)
9CL 5 5 9CL
9CLT
MO 6 6 MO * R374 MODULATION
* C223
* L350
* R350
* C369
C233
FREQUENCY
CONTROL
0.01u
R352 * L351 * D353 * C355 * Q351
* * L357
FREQUENCY
CONTROL
VCO OSC
PLL IC300
SA7025DK
R316 C320 C318
11 10
1.5k
2.2u10 2.2u10 PHA AUXIN
12 9
VSSA RA
C306
8
ACTIVE 13 0.01u
PHI REFIN
FILTER R309
7
R312 220 14 R305 C305
Q300 PHP VCCP CN300
2SC4116(GR) 330 L306 15 6 0 1000p
R306 FIN 1 9 FIN
VDDA RFIN
R311
22 16 5 10 5C
10k C304 5C 2
RN RFIN 1000p
R310 17 4 LDT 3 11 LDT
ACTIVE
FILTER RF VSS
R320
Q301 3.3k L305 18 3 EPT 4 12 EPT
R304 100
2SC4116(GR) LOCK STROBE
3.3k
19 2 DP 5 13 DP
R303 100
TEST DATA
L300 L304 20 1 CP 6 14 CP
R302 100
VDD CLOCK
REF 7 15 REF
R301 100
R300 10
R319 33
Q302
* L301 * L302 C321
2SC4226(R24)
C325 4p
4p
BUFFER
AMP
X3
BUFFER AMP IC1
16.8MHz
NJM4558E
1 8
1 4
AOUT +V VC +VDC
2 7
A-IN BOUT
L31
3 6 2 3 C89
GND OUT
A+IN B-IN
10u
4 5 0.01u
-V B+IN
C179 0.01u
A2 SUB UNIT (TX VCO/PLL)
X58-4810-XX C312 C314 C317 C324 C350 C352 C353 C354 C355 C356 C357 C358 C359 C360 C361 C362 C363 C364 C365 C366 C367 C369 C370 C371 C374 C375 C380
C368
-10 K,E 6p 12p 6p 0.22u/35V 470p 100p NO 470p NO 8p NO NO 1.5p 0.1u NO 12p NO 470p NO 7p NO NO 7p NO 0.5p NO 0.5p
7p
-11 K2,M2 5p 10p 5p 0.22u/35V 470p NO NO 470p NO 7p NO NO 1.5p 0.1u NO 12p NO 470p NO 7p NO 7p NO 7p NO 0.5p NO 0.5p
-12 E3 7p 12p 7p 0.33u/35V NO 100p 470p NO 10p NO 470p 3p NO NO 0.1u NO 18p NO 470p NO 7p NO 8p NO 8p NO 0.5p
A2 SUB UNIT (TX VCO/PLL)
X58-4810-XX D350 D351 D352 D353 D354 D355 L301 L302 L303 L350 L351 L352 L353 L354 L355 L356 L357 L358 L359 L360 L361 L362 TC350
-10 K,E 1SV282 NO 1SV282 NO 1SV214 NO 15n 15n 22n NO NO 1u 1u 1u NO L34-4645-05 NO 1u NO 1u NO 33n C05-0396-05
-11 K2,M2 1SV282 NO 1SV282 NO 1SV214 NO 15n 15n 18n NO NO 1u 1u 1u NO L34-4605-05 NO 1u NO 1u NO 22n C05-0396-05
-12 E3 NO 1SV282 NO 1SV282 NO 1SV214 18n 18n 27n 1u 1u NO NO NO 1u NO L34-4607-05 NO 1.5u NO 1.5u 33n NO
A2 SUB UNIT (TX VCO/PLL) TX-RX UNIT
X58-4810-XX R350 R351 R352 R353 R354 R355 R358 R359 R372 R373 R374 R375 R376 R377 Q350 Q351 X57-696X-XX A2 C28 C29 C223 C224 C235
-10 K,E NO 0 NO 0 33 NO NO 47 100k 100k NO NO 180 NO 2SK508NV(K52) NO 0-11,2-70 K,E X58-4810-10 2P 2P 100P NO
-11 K2,M2 NO 0 NO 0 33 NO NO 47 100k 100k NO NO 150 NO 2SK508NV(K52) NO 0-12 K2,M2 X58-4810-11 2P 2P NO NO
-12 E3 0 NO 0 NO NO 33 47 NO NO NO 100k 100k NO 180 NO 2SK508NV(K52) 2-71 E3 X58-4810-12 8P 11P NO 3p 100p
VO VO
* A3 SUB UNIT (RX VCO/PLL) (X58-4800-XX)
L352
R351 R354 33
0 1u
V-RXVCOL
C368 7p
RX-CV
(TP101)
FREQUENCY
-6.0dBm CONTROL VCO OSC
Q350
R353 L353 D352 * C356 L356 2SK508NV(K52)
*
1u
0 1SV282
CN350
GND 1 1 GND FREQUENCY
CONTROL
SRR 2 2 SRR
SRR
8CL 3 3 8CL
8CLR
CV 4 4 CV
L350
9CL 5 5 9CL R350
9CLR
0 1u V-RXVCOH
NC 6 6 NC
FREQUENCY C369 7p
CONTROL
Q351
L351 D353 2SK508NV(K52)
R352 * C355 * L357
1u
0 1SV282
FREQUENCY
CONTROL
VCO OSC
R316 C320 C318
1.5k
2.2u10 2.2u10
ACTIVE
FILTER
* R312 * R309
Q300
2SC4116(GR)
R306
C234 R311
10k 22
0.01u
ACTIVE R310
FILTER
R320 Q301 3.3k
2SC4116(GR)
2.2k
L300
* L301 * L302 C321
4p
IC2
BUFFER AMP
NJM4558E
R77 1
1 8
VC
AOUT +V
47k
2 7
A-IN BOUT
2
3 6 R76
GND
A+IN B-IN
100k
4 5
-V
B+IN
C84 0.01u
MB MB
MO MO
A3 SUB UNIT (RX VCO/PLL)
C381 X58-4800-XX C312 C314 C317 C355 C356 C363 C386 L301 L302 L303 L356 L357 R309 R312
NO -10 K,E 7p 12p 7p 5p 6p 15p 100p 18n 18n 22n L34-4608-05 L34-4608-05 330
NO -11 K2,M2 6p 15p 6p 5p 6p 18p 22p 15n 15n 18n L34-4607-05 L34-4607-05 390
NO 0.5p -12 E3 8p 18p 8p 6p 7p 15p 100p 18n 18n 27n L34-4609-05 L34-4609-05 330
TC351
NO
NO
C05-0396-05
TX-RX UNIT
L42 L45 R179 X57-696X-XX A3 C91 R175
NO 6.8n NO 0 0-11,2-70 K,E X58-4800-10 4P 0
NO 6.8n NO 0 0-12 K2,M2 X58-4800-11 4P 0
18n 18n NO 2-71 E3 X58-4800-12 5P 390
VO VO
B:1.56V
E:0.79V
R368 C:6.25V
C101
33 CN351 R106
BUFFER
AMP
GND 2 8 GND 5p 0
Q355
R168 C94
2SC4226(R24) C379 * *
VO 1 7 VO -3.0dBm
C374 RF AMP
R359
4p Q11
2SC3356(R24)
0.5p 47
DC SW B:7.72V
Q352 E:7.04V
2SC4116(Y) C:7.82V
R362
4.7k
DC SW
R364
Q354
10k DTC114EUA
DC SW
Q353
2SC4116(Y)
* R357
R363
4.7k
* C95 * C100 C105
7p
R162 * C91
Q8 Q9 Q10
2SC3356 2SC3356 2SC3357
270
RF AMP RF AMP
IC300
PLL
SA7025DK
11 10
AUXIN
PHA
12 9
VSSA RA
C306
13 8 0.01u B:1.73V B:1.46V B:1.50V
PHI REFIN E:0.74V E:1.13V
E:0.98V
14 C:6.70V C:6.56V C:7.06V
7 R305 C305
PHP VCCP CN300
15 6 0 1000p 9 FIN
FIN 1
VDDA RFIN
16 5 C304 5C 2 10 5C
RN RFIN 1000p
17 4 LDR 3 11 LDR
RF VSS
18 3 EPR 4 12 EPR
R304 100
LOCK STROBE
19 2 DP 5 13 DP
R303 100
TEST DATA
20 1 CP 6 14 CP
R302 100
VDD CLOCK
REF 7 15 REF
R301 100
R300 10
R319 33
RF AMP
* C7
Q302 Q1
2SC4226(R24) * L2
2SC3357
* L6
C325 4p * C3
B:3.40V
BUFFER E:2.62V
C:7.71V
AMP
A1
W02-1939-05_8
4
+VDC
L32
3 C90
OUT
10u
0.01u
* L33
X2
16.8MHz
MB MB
R31
MO MO 5.6
C13 CN1
R356 R357
330 220 180 470p
390 180 150 -92.5dBm
330 220 180
TX-RX UNIT
X57-696X-XX C2 C3 C7 C8 C14 C15 C94
2-70 E NO 12P 12P 0.5P 6P 6P 3P
0-11 K NO 12P 12P 0.5P 6P 6P 3P
0-12 K2,M2 NO 10P 7P 1P 8P 8P 3P
2-71 E3 1P 10P 8P 1P 7P 7P 4P
R144 4.7k 8T
C164 470p
TX SW
1.26V R135 5CR
5.6
D8 Q16 T:8.05V Q18
T:2.02V DC SW 2SB1132(Q,R) DC SW
DAN235K R:0V 7.84V R:0V 2SB1386(R)
T:0V
R:2.02V
R129
47k R130
47k
DC SW DC SW
Q23 Q17
DTC114EUA DTC114EUA
DC SW
T:8.05V
R:0V Q19
DTC114EUA
B:9.02V
E:8.36V
Q14
C:9.04V
5.09V 7.90V 5.02V 8.04V
RIPPLE FILTER IC3 IC11
NJM78L05UA NJM78L05UA
Q12 R123 Q14 R126
2SC4116(GR) 10 2SC4116(GR) 10 1 3 1 3
OUT IN OUT IN
2 2
VOLTAGE VOLTAGE
REGULATOR
REGULATOR
8TC
Q12
RIPPLE FILTER
8C
W/N
IC10 IC4
RIPPLE FILTER 7.91V 13.11V
RIPPLE FILTER TA7808F NJM7808FA 13.12V
8.06V
Q13 R122 Q15 R127
2SC4116(GR) 10 2SC4116(GR) 10
2 1 3 1
OUT IN OUT IN
3
VOLTAGE 2
REGULATOR
VOLTAGE
REGULATOR IC5
AN8009M 13.11V
1 3
OUT IN
B:7.85V B:9.03V
E:7.16V E:8.38V
C:7.92V C:9.05V 9.07V
2
VOLTAGE
REGULATOR
MB
MO
L34
10u
W5:1.08V D2
WIDE/NARROW SW
W4:1.08V DAN235K
N:0V
C214 R150
R10 * L29 * L30 R114 R113 CN3
-4.1dBm 0.01u 18
18
0 470
W5:0V
W4:0V
N:1.05V
* R173
L4 L5 L14
* * L34-4527-05 L17 L18
* C210 * C211 L34-4526-05 L34-4526-05
* XF2
44.85MHz
WIDE
W5:1.09V
W4:1.09V L16 L19
R37 N:0V L15
L34-4526-05 L34-4527-05 L34-4527-05
6.8k
WIDE/NARROW SW
D1
DAN235K
C37
0.01u XF1
C31 L12
Q2 L71-0513-05
44.85MHz
330n 2SC3357
330p
NARROW
RF AMP
B:1.31V W5:0V
E:0.54V W4:0V
C:6.66V N:1.06V
W/N
CN2
-91.0dBm
C95 C100 C210 C211 C215 C251 L2 L3 L4 L5 L6 L26 L27 L28 L29 L30 L33 R94 R168 R173 XF2
4P 5P 8P 12P NO NO L79-1849-05 18n L79-1849-05 L79-1849-05 18n 15n 22n 18n 18n 18n 15n 100 0 NO L71-0627-05
4P 5P 8P 12P NO NO L79-1849-05 18n L79-1849-05 L79-1849-05 18n 15n 22n 18n 18n 18n 15n 100 0 NO L71-0512-05
6P 5P 6P NO 5P 2P L79-1852-05 15n L79-1852-05 L79-1852-05 18n 15n 18n 18n 18n 18n 18n 82 0 0 L71-0512-05
4P 6P 10P NO NO 3P L79-1853-05 15n L79-1853-05 L79-1853-05 22n 22n 22n 22n 22n 22n 22n 100 270 0 L71-0627-05
8T +3.0dBm E04-0154-05
CN19
5CR
D/A SHIFT
IC6 IC7
CONVERTER REGISTER
M62354GP BU4094BCF CN15
E40-5703-05
E
16 1 1 16 1
VCC DO STRB VDD B
2
B
15 2 2 15 3
VDD LD DATA OE
14 3 3 14
AO6 CLK CLK Q5 CN16
E40-5632-05
13 4 4 13
1 GND
AO5 DI Q1 Q6
2 NC
12 5 5 12
L40 3 8T
AO4 AO1 Q2 Q7
L39 4 PC
11 6 6 11
L38 5 FAS
AO3 AO2 Q3 Q8
L37 6 FDT
10 7 7 10
L36 7 BUP
NC2 NC1 Q4 Q'S
L35 8 TMP
9 8 8 9
VSS GND VSS QS
CN14
E40-6009-05
36
8C
35
8C
34 NC
8TC 33 SB
32 SB
8C 31 SB
W/N 30 SB
K1 29 NC
S76-0401-05 28 QS
27 GND
28.5mV 26 GND
25 MO
24 MB
23 GND
22 SOE
DC SW 21 TMP
20 PSW
D7 1SS355
19 BUP
C162 0.01u 18 LD2
17 FWD
DC SW
16 STB
D12
R137 1k 15 CK
R138 1k 14 DT
02DZ18(X,Y) 13 LDT
LDT
LDR 12 LDR
Q24 Q25 R139 0 11
DTD114EK DTC114EUA EPT EPT
R140 0 10
EPR EPR
DC SW DC SW R141 0 9 CP
CP
R142 0 8 DP
DP
R182 0 7 SC
MB 6 RSSI
MO 5 ASQ
4 GND
CN4 R60 C216 3 NC
L21
-64.0dBm 75mV 2 DET
10u 10k 470p 1 NC
SURGE
L43 PROTECTOR
B:0.67V
E:0.07V D5
C66
C:3.70V MA742 3.70V
DC SW
Q26 330p C78
DTC114EUA
0.1u
C73
L23 C60 R83 NOISE
C67 0 0.1u
DETECTION
1u Q7
0.01u 330p
2SC4617(S) D13
MA742
NOISE AMP
NOISE
DETECTION
Q3
C52
2SC3356(R24)
R65
B:0.76V
0.01u E:0V
4.7k
C:4.94V
RF AMP
FM IF
X1 SYSTEM
44.395MHz 7.90V DC SW
Q5
C58 W5:5.05V
C53 DTA144EUA
1000p 18p W4:0V
N:0V
R50 L20
15k 1u
C64 0.1u
WIDE/NARROW SW
CF1 DC SW
D3 L72-0366-05 L24
Q27 Q4 Q6
DAN235K L34-4459-05 DTC144EUA DTC144EUA
DTC144EUA
WIDE5kHz/
W5:5.03V
WIDE4kHz
SWITCH W4:5.03V
N:0V
D4
Q4
WIDE DAN235K W5:0V
WIDE/NARROW SW W4:0V
WIDE/NARROW SW N:4.78V
CF2
L72-0376-05
R160 R161
470 470
NARROW
W/N
-118.0dBm
CN18
E04-0154-05
FINAL UNIT
(X45-374X-XX)
(A/2)-CN1
FINAL UNIT
(X45-374X-XX)
(A/2)-CN5
FINAL UNIT
(X45-374X-XX)
(A/2)-CN3