Kenwood TM-471A Service Manual page 41

TX-RX UNIT (X57-6863-XX)
R414
CV
Q402,403 0
RX VCO
CHARGE PUMP BUFFER AMP
* C430 R:0.75V
D403,404
D402 R410 RX VCO
R:5.84V R:0.98V 2SC5108(Y)
Q402 Q405
HZU5ALL 10k R418 R419 R421 L405 * L406 D404 * C426 * L408 2SK508NV(K52) C432
2SA1832(GR) CV
VOTAGE Q403
DROPPED R412 2SC4738(GR) 1k 1k 1.5k MA2S304 0.5p
R403 1k 12k
R402 1k
R401 1k
T/R SW
R429
PLL IC
220
IC401 Q407 Q408
TCXO MB15A02 T:6.7V 2SJ347 KRX102U
R430
R:1.6V X401 KDC R:4.97V PLL SYNTHESIZER
R404 220 R:6.8V
T:0V
10k
16.8MHz D405,406
RF AMP TX VCO * C439 T/R SW
T:0.98V
Q404 D406 R:5.48V Q406
R415 2SC4649(N,P) R:0.72V 2SK508NV(K52)
L403 0 * L411 MA2S304 * C434 * L413 C441
L77-1944-05 C411
0.3p
10u C412 R:6.78V
R:4.9V 0.1u
10u6.3 TX VCO
RIPPLE
FILTER
R409 D407 R:7.95V
MODULATION
100k R:4.96V
L416 R428
47k
LIPPLE
R425 R426 FILTER
47k 47k 8CL
UL(CPU21)
PLLE(CPU3)
MOD MOD
DT(CPU53)
CK(CPU54)
5C
D5,6
SURGE ABSORPTION
IC161
5M
M62363FP
DIGITAL
POTENTIO
METER
D5 D6
CN2
DA221 DA221
7 PKD
PKD 5C
6 IC204
BU4S66 5C
5 PR9
PR9 1 5 4.97V R164 1k
I/O
4 PR1 VDD R165 1k
PR1 2
3 PKS O/I SINGLE R166 1k
PKS ANALOG SW
3 4
2 SQC VSS CONT
SQC
C210 R210
1
C222 R224 0.1u 18k
C209 68p
560
0.1u
R209 R211 R212
R208 240k 82k 82k
1.5k
5C
R:4.98V
IDC IC202
BA10358FV
SPLATTER FILTER
MIC AMP/
SPLATTER
HPF FILTER
R:2.48V
8C
C213
IC201
NJM2100V 3300p
R207
Q201 MIC AMP/ R215 R214
AGC/ 750k IDC 68k 68k
MIC MUTE
C206
R:2.8mV
Q201
2SC4919 C203 1000p R:7.9V
BUFFER AMP
0.027u DC
C205 SUM AMP
C216 IC203 AMP
0.1u BA10324AFV
R:0.76V 39p
DI R217 1 14
D201 D202
R:0.1mV 2
DAN222 1SS372 220k 13
R206
R205 1/2Vcc 3 12
100
820 8C 4 11
VCC VEE
R:4.05V 5
AGC 10
OR GATE
6 9
8C
7 8
R:3.37V
1/2Vcc MOD BUFFA
R228 R227
10k 22k
C235 R237 1 5
PKD I/O VDD
1u 0 2
O/I
3 4
VSS CONT
IC205
BU4S66
5C
SINGLE BEAT X86
SHIFT L78-1409-05
ANALOG SW 8.00MHz
C90 C87 BEAT
Q87
2SK1830 SHIFT
3p R86 3p
0
Q86
2SK1830
R:1.9mV(BS OFF)
4.97V(BS ON)
RF AMP/
PREDRIVE AMP
RF SWITCH
RF SWITCH
Q500 Q501
Q410 RF AMP R:4.86V D409 2SC3356(R24)
T:5.26V 2SC5110(O) T:7.1V T:0.17V
R:7.03V T:4.5V DAN235E
R:5.6V R:1.7V Q411 * C502 C509
2SC5108(Y) R445 C466
* C454 * C456
4p
0 5p
T:0.98V
* L470
R:6.68V
L417
R432
1k
TP
TH351
R:4.88V R:4.27V R:0.76V XF351 3.3k -t R:7.3V R:1.15V
T:4mV L71-0620-05 D351,352
L352
C351 R353 R354 49.95MHz R355 MIXER RF BPF TUNING
LIPPLE G2 R:2.45V
33p 100k 680 0.47u D
FILTER 560 Q352 C367 * C371
3SK255 R364
Q440 C359 0
2SC2412K R:0.33V S G1 470p
R:7.57V
12p
Q351
2SC5108(Y)
IF AMP
R:6.86V
8R 8R
DT(CPU53) DT(CPU53)
CK(CPU54) CK(CPU54)
PC/TV
MIC MIC
W/NO(EVOL2) W/NO(EVOL2)
W/NI(EVOL1) W/NI(EVOL1) W/NI(EVOL1)
VOLO(EVOL11) VOLO(EVOL11)
VOLI(EVOL12) VOLI(EVOL12) VOLI(EVOL12)
BRI BRI
8TC(CPU80)
8RC(CPU76)
SPM(CPU51)
AMPSW(CPU52)
5M R123
0
C102
C128 0.1u
P9MT(CPU75) P9MT(CPU75) 1000p C101
M1MT(CPU76) M1MT(CPU76) 470p WIDE(CPU65)
NARROW(CPU64)
76 50
AFM
MICMT(CPU77) MICMT(CPU77) 77 P1MT 49 R118 0
MICMT NC
78 48
NC NC
79 47
8RC NC
80 46
8TC NC
81 45
NC NC
82 44
SBC CEFLS 5M
83 43
NC NC
84 42
NC NC
R124 85 41
NC NC
47k 86 40
CM NC
CM 87 39
87 MICKEY2 CPU EMPFLS 5M
88 38
MICKEY IC101 RXD TXD
88 MICKEY 30622MAA-B85GP NC
* R93 VOL 89 37
89 VOL NC
R91 90 36 R111
TEMP2 NC 34
1k 91 35 1k
TEMP1 PTT 35
R92 92 34
RSSI RXD R109 R110
1k 47k
93 33 1.5k
SQIN TXD
94 32
AVSS
BSYFLS
95 31
DTMF IN CLKFLS
L101
96 30 R106 1k
VREF PKS PKS
97 29 R105 1k
R:4.98V AVCC SQC SQC
98 28
NC NC
99 NC 27
NC
100 EEPWP 26
NC
PLLE(CPU3) PLLE(CPU3) CNVSS
QT/DQT(CPU1) QT/DQT(CPU1) 5M
R151 R152
EVLLD(CPU8) EVLLD(CPU8)
10k 4.7k
TX/RX (CPU20) TX/RX (CPU20)
UL(CPU21) UL(CPU21)
TX DTMF TX DTMF
XOUT(CPU11) XOUT(CPU11)
XIN(CPU13) XIN(CPU13)
17 POWER
RSSI(CPU92)
SQIN(CPU93)
DTMF IN(CPU95)
SBC(CPU82)
BSHIFT BSHIFT
1/2Vcc 1/2Vcc
R522
F501
0
R:13.8V
T:13.45V
T:7.32V
T:7.15V T:1.6V RF AMP/
L504 DRIVE AMP 2
C516 * C523 * R525 C526 L505
10n 5n
3p 9p Q503
T:0.11V Q502 RF AMP/
PD55003TR FINAL AMP
2SK2596
Q504
RF AMP/ * C541 * L507 RD60HUF1-01
DRIVE AMP 1
D502
DA221 T:5.11V
TEMPERATURE T:1.42V T:1.85V
COMPENSATION
VOLTAGE
PROTECTION
R370
47k
R:3.54V
RF AMP Q353
D353-355
R:7.25V 3SK255
RF BPF TUNING
D G2
C374 * L357 C380 R375 C383 R377 C386
7p S G1 470p 0 0.5p 0 0.75p
R:1.43V
R:0.82V
PC/TV SW
* C390
R381 * Q354
0
T:7.58V
R:2.2V
TV R380 TV PC R532 R531 R529
100k 0 47k 470
PC/TV PC/TV
MIC MIC
W/NO(EVOL2) W/NO(EVOL2)
VOLO(EVOL11) VOLO(EVOL11)
BRI BRI
8TC(CPU80) 8TC(CPU80)
8RC(CPU76) 8RC(CPU76)
SPM(CPU51) SPM(CPU51)
AMPSW(CPU52) AMPSW(CPU52)
R323 L304 R322
C321 DETECTION
120k 330n 100
R:6.6V
68p D301
L302 R:3.75V MA742
R:0.66V C319 8TC
C309
330n 1000p
0.022u
Q302
2SC2412K
W:4.96V BUFFER AMP R306
N:0V
270k
FM DEMODULATION
IC301
TK14489V SQL AMP/
CF301 NOISE AMP
L72-0993-05 WIDE
1 20 R:1.84V Q301
OSC(B) RFIN
IF SWITCH IF SWITCH C306 2SC2412K
2 19 R:1.25V
D303 D302 OSC(E) GND
3 18 1000p
DAN222 DAN222 NC Hy_C
CF302 C315 4 17
MIX_O SCAN
L72-0999-05 0.1u 5
R:7.95V 16
VCC SCAN
6 15
IF_IN
SQLIN
C311 0.1u 7 14
NARROW DEC1 FLAMPO
8
C312 0.1u 13
DEC2 FLAMPI
R314 2.2k 9 12
W:0V PH_S RSSI
N:4.96V
R315 18k 10 11
QUCO AFO
C258 R258 C256
0.01u AUDIO 2.7k 0.018u
L301
FILTER IC251
L34-4554-05 BA10324AFV R256
R259 1 14 5.6k
12k 2 13
3 12
C301
W/NI(EVOL1) R301
5M 4 11
4.7k VCC VEE
4.7u6.3
5M 5 10
AFI(EVOL12)
6 9 R251
AFV
7 8 47k
5C
R269 C268
RX
39k 1u
R:3.37V C253 R253
R:4.7mV(SQ OFF) AF MUTE 1/2Vcc 0.22u 0
4.97V(SQ ON) R:7.95V
Q253 R264
R268 120k
AFM(CPU50) 2SK3019 8C
1k R:2.7V Q251
5M R:3.3V
2SC2412K
C264
EEPROM
IC66 Q252 0.033u
2SK3019
AT24C64A10SI18 BUFFER
or CAT24WC64JI
AF MUTE AMP
R265
1 8 4.98V R:2.7V
A0 VCC
5.6k
2 7
A1 WP LIMITTER
3 6
A2 SCL D251
4 5 MA742
GND SDA
C66 470p
RSSI(CPU92)
SQIN(CPU93) SQIN(CPU93)
DTMF IN(CPU95) DTMF IN(CPU95)
SBC(CPU82) SBC(CPU82)
INT(CPU18) INT(CPU18)
1/2Vcc 1/2Vcc
RESET(CPU10) RESET(CPU10)
R800
ANT SW
D601
MA4PH633 * C620
ANT SW
D602
C570 MA4PH633 * C602 L602 L603
470p 1.5T 1.5T
T:0.8V
8T
D606,607
APC VOLTAGE
DETECT
D603-605 D606 D607 D1-4
ANT SW MA742 MA742 SURGE ABSORPTION
5M
APC CONTROLLER
IC501
TA75W01FU
POWER
5 4
VEE T:5.18V
6 3 R605 R607 D608 CN1
MIC R1 0 18
7 2 15k 330 1SS355
17
TEMPERATURE
8 1 16
VCC COMPENSATION
PTT R2 100 15
35
BRI 14
R528
RXD R3 100 13
470 34
POWER 12
17
VOL
R4 1k 11
89
8C 10
8C
5C 9
5C
DO
8
70
CL 7
68
CE 6
69
DI
MIC 5
71
MICKEY R5 1k 4
88
ENCB R6 1k 3
73
CM 2
R7 1k
87
BRI ENCA R8 1k 1
74
AUDIO AMP
IC252
LA4600
R313
100k 10 9 8 7 6 5 4 3 2 1
C273 R277 R278 C274
VOLO(EVOL11)
1u 68k 12k 0.22u
J1
SPM(CPU51) R279 Q254
DTC363EU
4.7k
AF MUTE
CN5
AMPSW(CPU52) Q255
KRC102S
AF MUTE
KEC
Q35,36 8T
T:7.63V D32
DC SW (8T) Q35
KTA1664(Y) CURRENT
R36 PROTECTION
Q36
DC SW (SB)
KRC102S 1.5k KEC R:13.66V
T:12.94V C37 470p
8TC(CPU80) R37 R35
R:13.8V
D32
10k 47k 1812L110PR Q31 F1
R:7.9V 2SA1641(S,T)
KEC B
VOLTAGE 1,1A SB
8R E
Q33,34 Q33 REGULATOR
(8C)
DC SW (8R) 2SA1745(6,7)
8R
R34 8C IC31
Q34 KIA7808AF
KRC102S R:7.9V
4.7k DC SW (SB)
R33 3 1
8RC(CPU76) OUT IN Q32
KRC102S
47k COM D31
2 KEC
KEC VOLTAGE REVERSE
REGULATOR CONNECTION
PROTECTION
8C (5M)
5C
IC32 IC33
R:4.98V NJM78L05UA R:4.98V NJM78L05UA
1 3 5M 1 3
5C OUT IN OUT IN
COM
VOLTAGE COM
2 REGULATOR 2
(5C)
5M
IC35 IC34
OVER VOLTAGE BD4740G BD4732G
DETECTION
1 5 1 5 R:4.98V
D62 R63 NC VCC NC VCC
R275 R:4.31V
5C 2 2
MA2S077 0 SUB SUB
15k 3 4 3 4
GND VOUT GND VOUT
Q61 D61 R61
KRC404RTK
02DZ18(X,Y) 470
OVER VOLTAGE OVER VOLTAGE VOLTAGE VOLTAGE
DETECTION DETECTOR DETECTOR
KEC DETECTION
(INT) (RESET)
FB
SBC(CPU82)
INT(CPU18)
RESET(CPU10)
DISPLAY UNIT (X54-3450-10)
LCD (B38-0885-05)
MR VFO CALL
MHz & MENU
ADJUASTMENT
S1
W02-3665-05
C39 REV Func
ENCODER
0.1u
D31
R55
0
1SS355
R47
47k
49 32
NC
50 SEG27 31
KI1 SEG26
J1 51 30
8 KI2 SEG25
MBL(Key A)
8C R48 4.96V 52 29
GND KI3 SEG24
PTT 47k 53 28
ON/OFF & VOLUME
ME NC SEG23
MIC ADJUASTMENT 54 27
HOOK NC SEG22
4.94V
CM 55 26
VR1 NC SEG20
1 R31-0646-05 R46 56 LCD CONTROLLER 25
VDD IC3 SEG20
100 57 24
CN1 VDD1 PT6554LQ SEG19
18 MIC or
58 23
VDD2 LC75854W SEG18
17 ME 59 22
16 GND VSS SEG17
VARIABLE 60 21
RESISTOR OSC SEG16
15 PTT
61 20
DO (to cpu) SEG15
14 BRI 62 19
13 RXD CE SEG14
63 18
CL SEG13
12 POWER 64
SEG12 17
CP1 DI (from cpu)
11 VOL
R90-0724-05
10 8C
4.96V
L1
9 5C
8 DO
7 CL
6 CE R21 R22 R23
5 10k 10k 10k
DI(from LCD)
4 MIC KEY
3 ENCODER B
2 CM LCD BACKLIT SWITCH LCD ILLUMINATION
1 ENCODER A 7.90V 7.90V Q9 7.10V
D19 D20 D21
2SB1132(Q,R) R49
KEY BACKLIT SWITCH 56 B30-2205-05 B30-2205-05 B30-2205-05
KEY ILLUMINATION
Q10 D22 D23 D24
D2 D3 D4 KRA225S 7.30V R41
R10
56 B30-2205-05 B30-2205-05 B30-2205-05
1.2k
B30-2205-05 D25 D26 D27
R50
D2-4
KEY BACKLIT 56 B30-2205-05 B30-2205-05 B30-2205-05
4.80V(BRIGHTNESS MAX) D28 D29 D30
Q6 0V(BRIGHTNESS OFF) R54
KRC102S Q12
56
UMG3N B30-2205-05 B30-2205-05 B30-2205-05
DC SWITCH
R8 5.02V D19-30
LCD BACKLIT
1k
DIMMER
FUNCTION
SWITCH
X57-6863-XX C350 C368 C369 C371 C372 C373 C381 C384 C387 C390 C392 C393 C426 C427 C429 C430 C431 C434 C438 C439 C440 C454
-00 C 400-430MHz NO 7p NO 0.5p 15p 8p 7p 7p NO 8p 3p 2.5p 8p 7p 2p 2p 3p 5p 2p 2p 3p 4p
-01 C2 440-480MHz 470p 10p 0.75p 0.75p 20p 10p 5p 8p 1p 10p 6p 0.75p 18p 12p 1.5p 6p 5p 9p 1p 3p 4p 6p
X57-6863-XX C456 C472 C502 C523 C524 C527 C540 C541 C545 C548 C549 C564 C567 C579 C580 C601 C602 C604 C605 C608 C610 C611
3p
-00 C 400-430MHz 4p 3p 5p 27p 10p 15p 8p 18p NO 39p 39p 20p 10p NO NO 5p 10p 2p 6p 2p 10p
9p
-01 C2 440-480MHz 3p 2.5p 3p 47p 8p 12p 47p 33p 10p 33p 33p 15p NO 4p NO 470p 1p 4p 3p 6p 4p
X57-6863-XX C620 L354 L355 L356 L357 L359 L360 L406 L407 L408 L409 L410 L411 L412 L413 L414 L415 L470 L507 R93 R119 R349
-00 C 400-430MHz NO 12.5n 12.5n 22n 39n 12.5n 8n 270n 270n 56n 270n 270n 270n 270n 47n 180n 270n 27n 5n 6.8k 0 NO
8n
-01 C2 440-480MHz 1p 8n 18n 33n 8n 5n 4.7u 4.7u 27n 4.7u 4.7u 27u 27u 27n 27u 27u 22n 2.5n 8.2k NO 47k
X57-6863-XX R350 R358 R373 R423 R424 R436 R439 R514 R515 R524 R525 R526 R538 D353 D603 D605 Q354 TC402 TH401
-00 C 400-430MHz NO 47 18k 330 270 120k 120k 56 33 NO 0 NO 47k HVC355B NO XB15A709 NO 6p NO
-01 C2 440-480MHz 27k 39 15k 220 150 82k 82k 47 10 820 5.6 820 56k HVC350B XB15A709 NO 2SK1830 10p 10k