Kenwood TK-2140 Service Manual page 24

TK-2140
SCHEMATIC DIAGRAM
TX-RX UNIT(X57-6402-71)(A/3)
5M 5M
BATT 7.50V 5M AVR
L400 F400
+B IC401
7.50V F53-0324-05 7.49V 7.21V XC6204B502MR 5M 5.01V
SURGE D405 1 5
ABSORPTION VIN VOUT
RB521S-30 2
5M PROTECT VSS
CN400 3 4
CE NC
14 +B +B
13 +B
12 IC400
SB
XC61CN4202NR
11 SB CP400
47K*2 DETECTOR DETECTOR
10
EN4 5MS IC404
XC61CN5002NR
9 EN3
5C AVR
8 GND CP401
IC403
47k*2 XC6204B502MR 5C 5.06V
7 EN2
1 5
6 EN1 5C
VIN VOUT
5 R400 IC402 2
VOL XC62GR5012PR 5.00V VSS
3 4
4 5M 10k 4.96V 1 5 CE NC
3 NC VOUT
GND 5MS SWITCH 2
VIN Q406
2 AUXKEY 3 4 2SJ347F
CE VSS
BATT 1 S_DET
AUX Q400
KEY DET 2SJ347F SAVE SWITCH
5CNS AVR
R404
1.0M SAVE
INT
5TC
5MS T:5.01V Q401 5T
PROTECT R:5.01V 5MS SWITCH
SWITCH 2SK1830F
R401
+B +B
5R 5R
470k(D)
SB SB
5MS 5MS
5M
RESET
EVSS
5CNS
IC901
TC75S51FE(F)
4 3 5TC SWITCH
T:0V Q404 5CNS
2SJ347F 2 D901
R:4.84V VSS
T:4.19V
Q403,404 R:4.99V 5 1 MA2S111-F
5T SWITCH VDD
5R SWITCH R408 R903
Q405
KTA2015(Y) 1k 47k
T:4.76V 5TC BUFFER
R:0V
T:4.86V
R:0V
Q403
5R 5T
DTC144EE
5RC
TX-RX UNIT(X57-6402-71)(B/3)
R528 4.7k TXMSK(4) CN500
R544 1 DTMSD
4.7k R529 4.7k RCLK(5)
Q500,506 TCLK(9) R530 4.7k TCLK(6)
Q506 2 DTMACK
MSK SWITCH DIR(14) R531 4.7k DIR(7)
2SK1824-A SCLK(13) R532 4.7k SCLK(8) 3 GND
Q500
2SJ243-A DI/O(11) R533 4.7k SDI/MSKO(9)
R534 4.7k TEST(10) 4 TEST
A R522 5 AFDAT
47k 6 AFRTM
7 AFTRD
R545 5CNS(14)
8 EM TONE SW
R506 0
1M R546 LIMITER SWITCH Q505
BASE BAND IC 2.78V DTA114EE 9 CLK
0
IC501 R548 10 AFRDT
AK2346 R543
180k 11 NC(OPTION)
13 12 4.7k
SCLK RDF/FD 12 MSK SW
14 11
DIR DI/O 13 AFDIR
A
R549 15 10
Q507 XOUT TDATA TX AF MUTE 14 5CNS
2SJ243-A 16 9
4.7k XIN TCLK Q501 15 LIMITSW
R550 17 8 2SJ243-A
R523 680k C525 1000p
VDD VSS 16 SSW
C515 1200p 15k R508 18 7 C522 0.1u
EXPOUT MOD 17 BEEP
R509 0 220k 19 6 R517
Q507 RXAFIN C523 270p 18 GND
EXTLIMIN
AF FILTER 20 5 27k
SWITCH RXAF LIMLV 19 5C
21 4 R520 R524 C526 R535 R536 C537 R537 C541
RXLPFO 20 GND
22 TXINO 3 390k 150k 0.01u 1M 100k 0.1u 10k R540 0.1u
RXINO TXIN R521 C531 AGC PROTECT 21 MICI
23 2 0
RXIN AGND 390k 12p D500 HSM88AS-E 22 PTT
R503 R512 24 1 R539
TEST AGNDIN 4 3 1k 23 ME
150k 120k Q502
A 2 24 ME
VSS 2SC4116(Y)F
A A A 5 1 25 TXHSD
VDD Q504
4.99V A 2SA1586(Y,GR)F 26 GND
IC502 TC75S51F R538 27 TXAF
C527 0.1u 2.7k
D501 HSM88AS-E 28 RXAFI
Q502,504
AF AMP,AGC AGC PROTECT 29 5RC
AGC
30 HSDIN
31 RXAFO
C507 R511 C513 1 14 32 GND
INPUT VDD
0.1u 15k 0.1u 2 13 5.07V 33 DTMSTD
NC1 NC3 IC500
3 12 LC73872M 34 DTMPD
PD EST
4 11 DTMF DECODER
OSCO STD
R514 5 10
R510 OSCI ACK
1M 0 6 9
NC2 SD
X501 3.58M 7 8
L78-0479-05 VSS LOAD
C517
0.1u
T:4.50V
R:4.48V
R817
100
C838 C831 C840 C832
R824
1000p 15p 10p 24p
1k
L807 L808
PLL IC LD PROTECT C31
IC801 27n 27n
LMX2316TMX 10p
Q803 T:0.43V
9 8 2SC5010-T1-A R:0.43V
GND3 OSCI
10 7 5.00V F IN RF AMP
CE VCC1
UL R825 11 6 CV
CP CLK FIN
1k 12 5
DATA FIN
DP 13 4
EP LE GND2
14 3
CP2 FO/LD GND1
1k*2 15 2 R809 R811 R813 R814 L802
VCC2 CPO
2.2k
16 1 0 0 0
VP FLO
5C X1
L77-1869-05
4.89V
R36 1 4 C2
VC VCC
0 1000p
2 3 L1 R826 C9
GND OUT 4.7u
0 1000p
16.8MHz
5C
SAVE SAVE
INT INT
5TC 5TC
5T 5T
APC
+B +B
5R 5R
SB SB
5MS 5MS
5M 5M
CLK
DATA
RESET RESET
EVSS EVSS
5CNS 5CNS
5.00V POTENTIAL METER
AF BUFFER 5.00V
TUNE
IC303 IC307
M62364FP-F
TC75W51FUF C313
1 24
1 8 0.1u VIN1 VIN8
VDD
2 7 R316 R319 2 23
VOUT1 VOUT8
DET-2 3 22
3 6 100k 68k VOUT2 VOUT7
4 21
4 5
VSS VIN2 VIN7
5 20 5.00V
VDD GND
R397 6 19
AF AMP,FILTER LD RESET
0 7 18
D300 CLK VDAref
RB706F-40 C390 8 17
DI DO
5RC AF AMP BIAS 0.1u
C320 9 16
VIN3 VIN6
0.1u 10 15
VOUT3 VOUT6
11 14
VOUT4 VOUT5
12 13
VIN4 VIN5
CN300
DTMSD 1
DTMACK 2 R320
GND 3 C318 12k
LSD BUFFER R907
TEST 4 330p AF AMP,FILTER
4 TO TCXO 4.7k R908
AFDAT 5 IC305
5 IC302
AFRTM 6 TC75W51FUF 5.00V TC75W51FK(F) 4.7k
C394
6 R323 1 8 5.06V
AFTRD 7 1 8 8
7 VDD 82k 2 7 0.1u
EM TONE SW 8 2 7
8 3 6 3 6
CLK 9
4 5 R314 C399 R308
AFRDT 10 4 5 R318 4
10 VSS 100 5600p 3.3k
68k
NC(OPTION) 11 R313
C391 0.01u
MSK SW 12 AF AMP,FILTER 0
12
AFDIR 13 LSD SUM HSD AMP
13
5CNS 14
LIMITSW 15
15
SSW 16 5.00V LSD LPF R340 R342
R322
BEEP 17 10k 22k
150k
GND 18 R324 IC306
TC75W51FUF
5C 19 470k 1 8
VDD
GND 20 R325 2 C325 C330 R341 R343
7
LSDO
MICI 21 360k 3 6 0.012u 0.1u 10k 10k HSDI
DSTB
PTT 22 4 5 R330 R334
VSS BEEP
HSDO
ME 23 180k 180k XOUT
XIN
ME 24
AF AMP,FILTER X300
TXHSD 25 9.8304MHz
LSD LPF L77-1810-05
GND 26 CLK SHIFT CLK SHIFT
ON :3.42V ON :2.68V 5.00V
TXAF 27 HSD LPF IC304 OFF:0.83V OFF:0V
TC75W51FUF
RXAFI 28 C322 1 8 5.00V EEPROM
VDD R348
5RC 29
1500p 2 7 4.7k IC310
HSDIN 30
R327 3 6 Q300 AT24C16A10SU18
2.50V 2SC4649(N,P)
RXAFO 31 47k 5 V REF 1 8
4 VSS CLK SHIFT BEAT 1 8
GND 32 ON :2.88V SHIFT 2 7
2 7
OFF:2.45V SWITCH
DTMSTD 33 3 6 CLK
AF AMP,FILTER 3 6 V_REF
DTMPD 34 4 5
4 5
BEEP EVSS
ME ME
DTSTD DTSTD
SSW SSW
DTCLK DTCLK
5RC 5RC
DTMPD DTMPD
SSW SSW
PTT PTT
TX VCO OSCILLATION
D1,3,7,8,804
D8 L13 D5 Q3
TX VCO TX VCO 2SK508NV(K52) D100,101
HVC376B 10u T:2.81V
L8 D3 C32 MODULATION T:1.19V TX/RX COMMON RF AMP TX/RX RF SWITCH
BUFFER AMP Q8 R:0V
T:0.65V Q5 R:1.19V
10u HVC376B 68p R:0.75V 2SC5108(Y)F C53 D101
2SC5108(Y)F C48 C49
C44 T:0.83V 10p HSC277
33p 15p
0.5p(B) R:0.83V
VCO SWITCH T:3.94V
R:3.94V
Q4
2SJ347F
T:4.93V
R37 C62 R33 R34 T:0V R:4.93V
R:4.23V
22k 4.7u6.3 47k 270k R19 L22
D10 L14
RX VCO OSCILLATION
HVC375B-E 10u 22 R24
Q2 T:0V
L9 D4 C34 2SK508NV(K52) 1.0k R:4.85V
T:0V
10u R:2.81V
HVC375B-E 33p Q6 RIPPLE FILTER
RN47A4-F R230
Q7
VCO SWITCH C41 2SC4617(S)
L811 0
10u 0.5p(B)
RIPPLE
D2,4,9,10,805 FILTER
SWITCH
RX VCO
5C 5C
SAVE SAVE
INT T/R
5TC 5TC
5T 5T
APC APC
+B +B
5R 5R
SB SB
5MS 5MS
5M 5M
CLK CLK
DATA DATA
RESET PF
EVSS
CP300
1k*2
EN4
EN3 76 50 R352 1.0k
CP301 EN3 A18 A18
EN2 1k*2 77 49 CP319
EN2 A19
1k*2
EN1 78 EN1 48
CSO CSO
CP302 79 47
D7 1k*2 D7 CS/MODE CS
80 46 R351
D6
D6 SELF
CP303 81 45 0
D5 1k*2 D5 SAVE
82 44 R623
D4 D4 WR WR
CP304 83 43 0
D3 1k*2 D3 BHE
84 42 CP320
D2 D2 RD 1k*2 RD
85 41
CP305 D1
D1 1k*2 BLCK
86 40
D0 D0 HLDA
87 MPU 39 R614 47k
PF HOLD
88 IC309 38 R615 47k
VOL VOL 30620M8A2W6GPU ALE
CP306 89 37
BATT2 RDY CP322
1k*2
BATT2 90 BATT1 36 1k*2
BATT1 CLK
91 35
ASQL DAT
92 34 R617 47k
TEMP
RXD RXD
93 33 TXD
RSSI TXD CP318
C335 94 32 1k*2 R353
AVss DTCLK
T:0.8V 0.01u 95 LSDI 31 R618 47k 1.0k
DTMDAT
R:0V(ON) 96 30 CP323
:3.2V(OFF) VREF UL 47k*2
97 29
5.01V AVcc
SSW
98 28
SFTSTB SIDE1 SIDE1
99 27
OE SIDE2 SIDE2
100 AFDIR 26
PTT
CP324
47k*2
AUX
LSDO
HSDI
DSTB
SKEY
BEEP AKEY
HSDO
XOUT BKEY
XIN CKEY
R346 L303
RESET 47k R621
0
BSHIFT
5CNS
5M
CLK
OE
STFSTB
ASQL
CLK RSSI
V_REF V_REF
EVSS EVSS
ME ME
DTSTD
SSW DTSTD SSW
DTCLK DTCLK
5RC 5RC
DTMPD DTMPD
SSW SSW
PTT PTT
TX FINAL AMP
Q106
TX DRIVE AMP 2SK2595-E L109 L110 L710 C141
Q103 R113 C119 L106 3T 5T 3T 82p
PRE-DRIVE AMP 2SK2596
0 1000p 27n
R102 C103 R106 C106 R111 C109 L105
T:3.12V(H)
56k 39p 1.5k 39p 18 1000p 27n :1.35V(L)
Q100 R:0V T:1.58V
C101 2SC5108(Y)F T:0.86V PRE-DRIVE AMP
R:0V
1000p R:0V Q101
2SC5192-A
T:0.30V
R:0V T:1.80V(H)
T:79mV T:4.68V T:0.89V T:4.83V :0.58V(L)
R:0V R:0V R:0V R:0V R:0V
R114
T:6.88V(H)
:7.22V(L)
68k
R:7.50V
T:4.89V
R:0V
5T
APC SWITCH R138 R139
Q104
L205 L206 C244 560 R131 2.2k
DTC114EE
39n 39n APC PROTECT 150k(D) R134
5p(B) R126 C128
10k
C236 C240 0
100p
1 8
2p 1.5p oUT1 VCC
R127
2 IN1- oUT-B 7
150k(D) 3 6
IN1+ IN2-
APC SWITCH R128
T:4.76V 4 VEE IN2+ 5
R:0V Q105
DTC114EE 150k(D)
IC100
C136 TA75W01FUF
T/R APC AMP
5TC 1000p
5T 5RC
APC APC
+B
5R 5R
SB T:0V R265
5MS Q206 BPF
5M R:4.82V XF202
CLK 330k T:0V 44.85MHz FRONT-END
DATA R:0.71V 1ST MIXER
L71-0530-05 T:0V
PF C229 R227 OUT IN C231 R228 L220 R:4.83V
180n
Q205 0.01u 390 0.01u 330 Q206
2SC5108(Y)F T:0V 3SK318
R254 R232
IC308 IF AMP R:0.9V
FLASH ROM AT29C02090TU 0 560 T:0V
R:2.40V
17 16 C295
A3 A3 A4 A4 T:0V
18 15 R:4.65V 15p
A2 A2 A5 A5
19 14
A1 A1 A6 A6 CLK
20 13 DATA
A0 A0 A7 A7
21 12 PF
D0 I/o0 A12 A12 SB
22 11 5MS
D1 I/o1 A15 A15
23 10 W :4.81V X200 IF IC
D2 I/o2 A16 A16 S-W:4.81V 44.395MHz
24 9 L77-1760-15 IC200
GND NC A18 N :0V TA31136FNG
C211 C212
25 8 W/N SWITCH 1 16 L905 C225
D3 I/o3 VCC W :0V 1000p 22p 4.09V oSCIN MIXIN
26 7
D4 I/o4 WE WR S-W:0V R218 L201 2 GND 15 1u 0.01u
27 6 Q201 N :2.87V oSCoUT
DTC144EE 12k 1u 3 14
D5 I/o5 A17 A17 MIXoUT N-REC W :4.82V
28 5 4 13 S-W:4.82V
D6 I/o6 A14 A14 VCC N-DET N :0V
29 4 C210
D7 I/o7 A13 A13 W :0.38V 0.1u 5 12 RSSI
S-W:0.38V CF201 IFIN RSSI
30 3 L72-0934-05 W/N SWITCH C214 6 11 C221
CSO CE A8 A8 N :0.44V DEC IFoUT Q503
31 2 RN47A4-F
A10 A10 A9 A9 CF200 D202 D203 0.1u 7 10 68p R255 R264
32 1 L72-0962-05 DAN235E DAN235E FILoUT QUAD
8 9 2.7k 180
RD oE A11 A11 FILIN AFoUT
R256
C341 L301
W :0.38V 47k
W/N SWITCH
L302 0.01u S-W:0.38V W/N SWITCH
N :0.44V
5.01V
W/N
SHIFT REGISTER
W :4.81V
IC311 S-W:4.81V
BU4094BCFV N :0V
1 16
4.96V
STRB VDD DM SWITCH
2 15 AF DETECT
DATA SOE Q204 R223
3 14 SWITCH 2SK1830F
CLK W/N 180k
Q203
4 13 2SK1824-A D209
LEDR 5TC
5 12 D209
LEDG BSHIFT C215 MA2S111-F
6 11 DM CHARGE/
LCDBLT DISCHARGE SWITCH
DTMPD 15u6.3 5R
7 10
LSW NC
8 9
VSS QS
R266 R219
T:1.90V
R:1.90V 220k
2.7k C217 R206 C205
R267
SHIFT REGISTER 330k 220p 33k 0.1u
C201 Q903
IC312 W/N SWITCH
BU4094BCFV
0.1u R911 10k
1 16 4.96V T:0.87V
STRB VDD R:0.87V
2 15 SQL Q208
2SC4617(S)
DATA SOE RECTIFICATION
3 14 NOISE AMP
CLK 5RC
4 13 T:4.76V T:0.25V
R:0V Q903
AM1 MSW R:0.25V DTC144EE
5 12 D200 R200 AF AMP,FILTER D903
DSW TEST DAN235E
6 11 D902 R914 R915
T/R EMTON HVC131 220k C275 DAN235E
0
7 10 SQL C243 39k
DM NC VOLTAGE 4700p
8 9 CHARGE R916 R917
VSS NC 560p 180k 0
HSD AMP R259 R260 C253
BSHIFT 680k 180k 0.1u W/N SWITCH W/N SWITCH
5CNS 5CNS
5M 5M
CLK AM
OE
STFSTB LEDR
ASQL
RSSI
V_REF
EVSS
ME ME
LCDBLT
LEDG
5RC
DTMPD
SSW SSW
PTT PTT
D102 Note : The components marked with a dot ( ● ) are parts of layer 1.
D102,103
HVC131 ANT SWITCH
D103 C146 L113 L114 L115 ANT
HVC131 1000p 7T 7T 6T CN13
C148 C150 C153
10p 12p 7p
LCD ASSY(B38-0859-05)
CN302
14 GND
L320 13 VCC
D104,105
T:0.80V R603 12 CS
R:0V ANT SWITCH CS
R145 L120 C151 470 R604 11 SCLK
0 56n 33p R605 470 10 SID
470 R606 9 SOD
R607 470 8 VEE
470 R608 7 SKEY
SKEY
Q108 R609 470 6 AKEY
DTA144EE AKEY
R137 470 R610 5 BKEY
BKEY
1M
R611 470 4 CKEY
APC SWITCH CKEY
470 R612 3 LEDA
R613 0 2 LEDK
0 1 NC
APC SWITCH
R141
100k Q107
2SK1824-A
5RC
APC
5R
T:0V T:0V
FRONT-END RF AMP D208
R:4.68V R:1.70V BPF TUNING
T:0V
R:4.78V
D205,206 Q207 R720 C261 R273 R272 C267
T:0V 3SK318
R:2.40V BPF TUNING 47 4.5p 0 0 2p(B)
T:0V
C294 R276 R238 R275 C251 C289 R274 R:0.69V (B)
C269
1000p 0 0 0 6p(B) 1.5p 0 9p
(B) (B)
D207
CLK
DATA BPF TUNING
PF
SB
5MS
CN305
L304
CN306
R:4.96V(I)
:0V(E)
CN301
14 SSW
13
SP+
12
SP-
L313 11
MSW
L312 10
R385 47 EMC
9
ME
Q303 D305 L307 R383 100 8
PTT
AF AMP AVR AF AMP AVR L308 7
Q302 R378 100 PF
R367 AF AMP AVR SWITCH C353 D308 6
T:0V NNCD6.8G-A NC
5
10k 0.1u R:1.60V(I) MIC INPUT PROTECT E
Q303 :0V(E) AF POWER AMP
R358 2SB1132(Q,R) IC313 L309 4
5M
0 Q308 TDA7053AT L310 R380 100 3
TXD
T:0V INT/EXT 1 16
SWITCH NC1 OUT1+ L311 R381 100 2 RXD
R:4.88V(ON) Q302 2 15
:0V(OFF) 2SC4617(S) 1
VC1 NC4 NC
3 14 D302 D306
NC2 PGND1 DA221 DA221
R359 Q308 4 13
15k C346 2SK1824-A VI<1> OUT1-
5 12
47p VP OUT2-
6 11 D302,306
VI<2> NC3
C356 7 10 SURGE ABSORPTION
T:0V
SGND PGND2 R:4.98V
R362 47p 8 9 CN303
VC2 OUT2+ PTT
D301 47k T:0V
D301 C348 CP327 SW1
AF AMP 47k*2 R:0V(I)
PROTECT :1.60V(E) S600
1SS373F 0.47u 5M
SW2 PTT
R363 R369 R373 R376
GND
R361 120k 56k 120k 10k
1k TH300 -t 150k CN304
R:4.96V(I)
PROTECT LCD AVR C350 L305
:0V(E) C354 Q307 Q304 1.83V S601
0.1u UPA672T-A 2SC4617(S) 3.3u4 L306 LAMP SW1
ON :5.08V
R368 OFF:0V
Q301
2SJ347F Q305
UPA672T-A 1.0k T:7.28V Q309
Q305.307 R:7.49V(ON)
MIC MUTE :7.51V(OFF) BUSY LED SWITCH LCD LED AVR
INT/EXT SWITCH Q306
D303,307 Q311 S602
PROTECT TX LED SWITCH LR LG LBL 2SA1362-F(Y)
SW2
C344 T:4.92V Q306 Q309
R357 10u6.3 C352 R:0V 2SC4617(S) 2SC4617(S) T:0V
5M
R:4.91V(ON)
AM 470 0.1u :0V(OFF)
R391
330 Q310
LEDR 2SC4617(S)
TX-RX UNIT
R386
(X57-6402-71)
330
C369 (C/3)
100p
ME
LCDBLT
LEDG
T:TX
D309 D310 Q310 R:RX
TX RED LED RX GREEN LED LCD LED
I:INTERNAL
SSW AVR SWITCH
PTT E:EXT.SP MIC
W:WIDE5K
S-W:WIDE4K
N:NARROW