Kenwood TK-3148 Service Manual page 73

Uhf fm transceiver
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TX-RX UNIT (X57-6413-01) (A/3)
5M
5M
BATT
7.50V
F400
5M AVR
DETECTOR
L400
+B
IC400
IC401
7.50V
2.5A
7.50V
7.20V
XC6204B502MR
5.04V
XC61CN4202NR
5M
SURGE
D405
1
5
3
2
ABSORPTION
VIN
VOUT
NC
VIN
RB521S-30
2
5M PROTECT
VSS
3
4
4.88V
CN400
CE
NC
14
+B
+B
4
1
RESET
VSS
VOUT
13
+B
12
SB
SB
11
SB
CP400
47K*2
DETECTOR
10
EN4
5MS
IC404
9
EN3
XC61CN5002NR
5C AVR
8
GND
CP401
IC403
47k*2
5C
7
EN2
XC6204B502MR
5
5.05V
6
EN1
1
VIN
VOUT
IC402
2
5
VOL
R400
VSS
XC62GR5012PR
5.04V
3
4
4
5M
10k
5.0V
1
5
CE
NC
3
GND
NC
VOUT
5MS SWITCH
2
VIN
2
AUXKEY
3
4
Q406
CE
VSS
2SJ347F
BATT
1
S_DET
Q400
DET
2SJ347F
SAVE SWITCH
AUX
5M
KEY
5CNS AVR
5MS
R404
PROTECT
5C
1M
SWITCH
SAVE
INT
5TC
T:3.44V
Q401
5T
R:3.66V
2SK1830F
5MS SWITCH
R401
+B
+B
470k(D)
5R
SB
5MS
5MS
5M
EVSS
EVSS
5CNS
T:0V
Q404
5CNS
R:4.88V
2SJ347F
T:0.23V
Q403,404
5T SWITCH
R:4.84V
5R SWITCH
Q405
R408
RESET
KTA2015(Y)
T:5.02V
4.7k
R:0V
T:4.63V
R:0V
Q403
DTC144EE
5R
5T
5RC
TX-RX UNIT (X57-6413-01) (B/3)
X500
L77-1708-15
3.579545MHz
R520
4.7k
CN500
R519
1k
XOUT
1
GND
2
3
AFCLR
T:4.90V
AFRDT
4
R506
34
22
T:4.89V
R:5.04V
R:5.04V
AFRTM
5
VSSD
STB
0
35
21
R523
6
VSSA
VDDD
AFTRD
C507
36
20
47
R501
C502
MSKST
VDDA
AFMSKE
7
0.01u
37
19
CLK
8
91k(D)
0.1u
PWRoP
TXFI
R502
C503
38
18
C527
0.1u
9
PWRoN
BASE BAND IC
CMPo
AFDAT
68k(D)
0.01u
39
17
C528
0.1u
PWRGS
IC500
CCHG
AFREG2
10
C504
40
TC35453FG6
16
AFREG1
11
PWRIN
CMPIN
C501
0.01u
41
15
C525
12
EXPo
ALCo
AFSTB
0.1u
C508
42
14
0.1u
ECHG
CALC
5CNS
13
0.1u
43
13
MMUTE
14
EXPGS
MICGS
TX AF MUTE
44
EXPIN
12
15
MICIN
5TC
R531
5C
16
R504
180k
GND
17
91k(D)
18
AF AMP,FILTER
MICI
IC501
PTT
19
TK62012F
R509
ME
20
C526
C531
1
8
0
21
5600p
0.015u
2
7
R537
ME
(J)
TXHSD
22
3
6
0
RX AF MUTE
GND
23
4
5
T:5.01V
Q500
24
R:0V
DTC144EE
TXAF
RXAFI
25
R533
C511
C516
5RC
26
5600p(J)
150p
100k
27
HSDIN
R516
R518
C524
RXAFO
28
180k
22k
1000p
GND
29
MIS INPUT
C541
30
PROTECT
GND
C517
T:0V
0.056u
0.1u
R:5.01V
Q502
C518
2SK1830F
MIC MUTE
0.033u
R47
100
C15
C20
C25
R11
UL
CP
100k
5p
3p
1.5p
DP
EP
Q1
R48
C60
5.02V
2SC5488A-H
R40
DOUBLER
0
10p
150k
R44
R45
100
100
D13
D14
F-IN FILTER
T:0V
F-IN FILTER
4.87V
SHIFT SW
R:4.89V
SHIFT SW
X1
L77-3028-05
D11,12
PLL LOCK SPEED-UP
1
4
C2
10
16
D11
Vcont
Vcc
DGND
DVDD
CV
1000p
9
17
DGND
PLL IC
DVDD
MA2S077-F
2
3
L1
R36
C8
8
18
D12
D2,4
GND
OUTPUT
IC1
4.7u
REFin
VP
RX VCO
1k
0.01u
7
ADF4111BCP7
19
MA2S077-F
AVDD
Rset
16.8MHz
R38
6
20
R3
R7
R8
R9
L7
L10
D4
C33
L16
C38
C43
AVDD
CP
47
0
0
1.5k
0
100n
1SV325F
22p
47n
3p(B)
0.5p(B)
RX VCO
OSCILATION
T:0V
R:0.91V
Q2
T/R
2SK508NV(K52)
T/R
5C
5C
5C
SAVE
SAVE
SAVE
INT
INT
INT
5TC
5TC
5TC
5T
5T
5T
APC
+B
+B
+B
5R
5R
5R
SB
SB
SB
5MS
5MS
5MS
5M
5M
5M
TUNE
CLK
CLK
CLK
DATA
EVSS
EVSS
EVSS
5CNS
5CNS
5CNS
AF AMP,FILTER
5.04V
POTENTIAL METER
IC300
TK62012F
AF BUFFER
IC307
M62364FP-F
1
8
C302
V REF
RESET
VDD
1
24
2.00V
2
7
0.1u
VIN1
VIN8
2
23
3
6
VoUT1
VoUT8
R326
3
22
4
5
VoUT2
VoUT7
VSS
0
4
21
VIN2
VIN7
5
20
5.04V
VDD
GND
AF AMP,FILTER
TUNE
R397
6
19
LD
RESET
2.01V
HSD BPF
IC303
5RC
HSDI1
TK62012F
C313
0
7
18
C730
CLK
VDAREF
1
8
8
17
2.2u16
VDD
100p
DI
D0
R308
C306
2
7
R316
R319
C320
9
16
VIN3
VIN6
4.7k
R313
R315
3
6
100k
47k
0.1u
10
15
0.1u
VoUT3
VoUT6
10k
4.7k
4
5
11
14
VSS
VoUT4
VoUT5
12
13
VIN4
VIN5
C390
5.05V
V_REF
0.1u
V_REF
DSTB
5.04V
CN300
R320
1
XOUT
56k
LSD BUFFER
C318
LSD SUM
2
GND
TO TCXO
220p
3
AFCLR
IC305
IC302
TK62012F
3
TK62012F
4
AFRDT
R323
1
8
4
1
8
VDD
5
AFRTM
VDD
82k
2
7
R328
5
2
7
6
AFTRD
3
6
100k
6
3
6
7
AFMSKE
4
5
7
4
5
VSS
8
CLK
VSS
9
AFDAT
2.01V
AF AMP,FILTER
9
AF AMP,FILTER
10
AFREG2
5.05V
V_REF
10
11
AFREG1
11
R340
R342
12
AFSTB
12
10k
22k
13
5CNS
LSD LPF
14
MMUTE
R322
5.04V
14
15
5TC
150k
IC306
R324
TK62012F
16
5C
330k
1
8
17
GND
VDD
R325
2
7
C325
18
MICI
330k
3
6
DSTB
0.012u
LSDO
19
PTT
R332
C330
R341
R343
BEEP
4
5
R330
R334
EVSS
20
ME
VSS
470k
0.1u
10k
10k
180k
180k
21
ME
AF PREAMP
AF AMP,FILTER
22
TXHSD
23
GND
LSDI
24
TXAF
HSDO
XOUT
XIN
25
RXAFI
HSD LPF
C322
26
5RC
0.01u
27
HSDIN
BSHIFT
4
3
X300
EEPROM
28
RXAFO
2
9.8304MHz
VSS
L77-1810-05
IC310
29
GND
5.0V
CAT24C16WI-G
5
1
R327
R333
5CNS
30
GND
VDD
R348
1
8
5.04V
47k
47k
NC1
VCC
5MVCC
IC304
4.7k
2
7
TC75S51FE(F)
Q300
NC2
WP
V_REF
3
6
AF AMP,FILTER
2SC4649(N,P)
NC3
SCL
CLK
BEET
4
5
SPOUT
VSS
SDA
SHIFT
SWITCH
RXAFO
RXAFO
HSDI1
HSDI1
RESET
RESET
RESET
5RC
5RC
5RC
ME
ME
ME
PTT
PTT
PTT
AFOUT
AFOUT
MICI
MICI
MICI
T:3.60V
R:0V
C700
D5
R17
D1,3
1.5p(B)
TX VCO
100
PRE-DRIVE AMP
MODULATION
TX VCO
C31
T:1.93V
D100,101
T:87mV
R102
L8
D3
9p
L15
C47
TX/RX COMMON RF AMP
C42
BUFFER AMP
T:1.86V
R:2.06V
TX/RX RF SWITCH
R:0V
T:0.72V
R:1.86V
Q8
47k
100n
1SV325F
(B)
39n
4p(B)
0.5p(B)
R:0.76V
Q5
2SC5108(Y)F
C57
R33
D101
C101
Q100
2SC5108(Y)F
C51
C53
T:1.25V
1.5p(B)
0
HSC277
470p
2SC5108(Y)F
Q3
T:0.80V
2SK508NV(K52)
R:0V
9p
5p
R:1.31V
T:4.86V
T:2.67V
T:67mV
R:4.85V
R:0V
R:0V
T:3.90V
R:3.88V
VCO SWITCH
L9
C68
R13
R15
4.7u10
47k
47k
Q3
Q4
2SJ347F
TX VCO
T:0V
T:0V
OSCILATION
R:3.68V
R:4.89V
R19
L22
RIPPLE FILTER
Q7
100
R24
T:0V
2SC4617(S)
R230
L205
L206
C244
1k
R:2.80V
0
22n
22n
4p(B)
Q6
T:2.89V
RN47A4-F
C236
C240
VCO SWITCH
R:2.91V
2p
1p
RIPPLE
FILTER
SWITCH
T/R
T/R
5C
SAVE
SAVE
INT
5TC
5TC
5TC
5T
5T
5T
APC
APC
APC
+B
+B
+B
5R
5R
5R
SB
SB
SB
5MS
5MS
5MS
5M
5M
5M
TUNE
TUNE
TUNE
CLK
CLK
CLK
DATA
DATA
DATA
PF
PF
PF
EVSS
FLASH ROM
IC308
AT29C040A-90TU
17
16
A3
A3
A4
A4
18
15
A2
A2
A5
A5
19
14
A1
A1
A6
A6
20
13
A0
A0
A7
A7
EVSS
21
12
D0
I/o0
A12
A12
22
11
D1
I/o1
A15
A15
23
10
CP300
D2
I/o2
A16
A16
5MS
1k*2
EN4
24
9
GND
A18/NC
A18
25
8
EN3
D3
I/o3
VCC
26
7
76
50
R352
1k
D4
I/o4
WE
WR
CP301
EN3
A18
A18
EN2
1k*2
77
49
CP319
27
6
EN2
A19
D5
I/o5
A17
A17
EN1
78
48
1k*2
28
5
D6
I/o6
A14
A14
EN1
CSO
CSO
29
4
CP302
79
47
D7
I/o7
A13
A13
D7
1k*2
D7
CS/MODE
12
80
46
30
3
D6
D6
SELF
CSO
CE
A8
A8
81
45
31
2
CP303
A10
A10
A9
A9
D5
1k*2
D5
SAVE
32
1
82
44
R623
RD
oE
A11
A11
D4
D4
WR
WR
CP304
83
43
0
5.04V
D3
D3
BHE
1k*2
84
42
CP320
C341
L301
1k*2
D2
D2
RD
RD
L302
0.01u
CP305
85
41
D1
1k*2
D1
BLCK
86
40
5.03V
D0
D0
HLDA
87
39
R614
47k
W/N
MCU
SHIFT REGISTER
PF
HOLD
88
IC309
38
R615
47k
IC311
VOL
VOL
30622MEP526GU
ALE
BU4094BCFV
CP306
89
37
BATT2
RDY
CP322
1
16
BATT2
1k*2
90
36
1k*2
STRB
VDD
5.00V
BATT1
BATT1
CLK
2
15
91
35
DATA
SOE
ASQL
DAT
3
14
92
34
R617
47k
CLK
W/N
T:0.23V
TEMP
RXD
RXD
4
13
93
33
TXD
LEDR
5TC
R:4.84V
RSSI
TXD
CP318
5
LEDG
12
C335
94
32
1k*2
BSHIFT
AVss
DTCLK/PLLTYP
6
11
T:1.03V
0.01u
95
31
R618
47k
LCDBLT
R:0V(ON)
LSDI
DTMDAT
7
DTMPD/NC
10
96
30
CP323
MMUTE
NC
:2.71V(OFF)
VREF
UL
47k*2
8
9
5.04V
97
29
VSS
QS
AVcc
AUXTXD
98
28
SFTSTB
SIDE1
SIDE1
99
27
PLL SELECT
OE
SIDE2
SIDE2
Q312
100
AFSTB
26
DTC144EE
SHIFT REGISTER
PTT
IC312
BU4094BCFV
CP324
47k*2
1
16
STRB
VDD
AUX
2
15
DSTB
LSDO
DATA
SOE
BEEP
3
14
EVSS
EVSS
CLK
AFREG2
4
13
7
AM1
AFREG1
6
5
12
5
PLLSEL
AFCLR
4
6
T/R
11
R354
L303
AFMSKE
7
10
LSDI
DM
NC
HSDO
0
8
9
XOUT
VSS
NC
XIN
5MVCC
BSHIFT
BSHIFT
BSHIFT
OE
OE
SFTSTB
DM
HSDI
HSDI
5M
5CNS
5M
5CNS
5CNS
5MVCC
ASQL
ASQL
RSSI
RSSI
V_REF
V_REF
V_REF
CLK
CLK
SPOUT
SPOUT
SPOUT
AM
LEDR
LCDBLT
LEDG
HSDI1
HSDI1
HSDI1
RESET
5RC
5RC
5RC
ME
ME
ME
PTT
PTT
PTT
AFOUT
AFOUT
AFOUT
MICI
MICI
MICI
D102
TX FINAL AMP
D102,103
HVC131
TX DRIVE AMP
Q106
STRIP LINE
L710
C146
D103
ANT SWITCH
Q101
Q103
C164
L116
L199
2SK3476-F
33p(G)
1.8n
2.7n
6.8n
39p
HVC131
PRE-DRIVE AMP
2SK2596-E
C106
R111
C160
L114
L115
C103
R106
8p
18
1000p
8.2n
8.2n
T:1.97V(H)
:0.75V(L)
8p
1.5k
T:0.97V
Q101
R:0V
R:0V
2SC5191-A
T:4.60V
T:6.81V
T:6.84V
R:0V
R:7.50V
T:4.39V
T:0.63V
T:4.59V
R:7.50V
R:0V
R:0V
R:0V
T:1.40V(H)
D104,105
:0.43V(L)
R:0V
T:0.80V
ANT SWITCH
R:0V
R147
R152
C154
R114
T:3.60V
100k
R:0V
0
0
12p
5T
5T
APC SWITCH
Q104
R138
R140
DTC114EE
0
R131
1k
Q108
R124
DTA144EE
APC PROTECT
150k(D)
R134
R139
0
C128
10k
1M
T:7.09V
APC SWITCH
100p
R:7.49V(ON)
1
8
:7.50V(OFF)
oUT1
VCC
R127
2
7
IN1-
oUT-B
150k(D)
3
6
IN1+
IN2-
APC SWITCH
Q105
R128
4
5
R142
DTC114EE
VEE
IN2+
APC SWITCH
150k(D)
100k
Q107
T:0V
T:0.38V
2SK1824-A
C122
C136
IC100
R:7.21V(ON)
R:7.24V(ON)
TA75W01FUF
470p
470p
:7.25V(OFF)
:7.22V(OFF)
APC AMP
5TC
5T
5T
5T
APC
APC
+B
5R
5R
SB
R265
Q206
BPF
TUNE
330k
T:0V
XF200
FRONT-END
T:0V
R:0.72V
44.85MHz
1ST MIXER
CLK
R:4.65V
L71-0530-05
DATA
C229
R227
OUT
IN
C231
R228
L701
T:0V
D204
PF
R:1.74V
BPF TUNING
Q205
0.01u
330
0.01u
330
270n
Q206
C294
R276
R238
2SC4649(N,P)
T:0V
3SK318
R254
R232
IF AMP
R:0.42V
56p
0
0
47
1k
T:0V
T:0V
R:1.75V
R:4.74V
TUNE
TUNE
TUNE
CLK
CLK
CLK
DATA
DATA
DATA
PF
PF
PF
SB
SB
5MS
5MS
5MS
5MS
W/N SWITCH
X200
44.395MHz
IC200
IF IC
TA31136FNG
Q201
L77-1760-15
C211
C212
DTC144EE
1
16
R253
C225
1000p
22p
4.25V
oSCIN
MIXIN
R218
L201
2
15
0
0.01u
oSCoUT
GND
12k
1u
3
14
MIXoUT
N-REC
R:0V(W)
4
13
4.87V(W)
T:2.62V(N)
C210
VCC
N-DET
0V(N)
0.1u
5
12
ME
ME
R:0.39V(W)
CF201
IFIN
RSSI
T:0.52V(N)
L72-0934-05
W/N SWITCH
C214
6
11
C221
SSW
DEC
IFoUT
Q202
D202
C262
C265
D203
0.1u
7
10
68p
R255
R264
RN47A4-F
CF200
DAN235E
DAN235E
FILoUT
QUAD
L72-1031-05
0.1u
0.1u
C246
C254
8
9
2.7k(D)
180
FILIN
AFoUT
0.1u
0.1u
R256
47k
W/N SWITCH
R:0.39V(W)
SB
T:0.53V(N)
W/N SWITCH
Q303
D305
W/N
W/N
AF AMP AVR
AF AMP AVR
Q203
Q302
2SK1824-A
4.94V
AF AMP AVR SWITCH
T:0.15V
AF DETECT
R367
C353
R:6.64V(ON)
SWITCH
12k
Q303
0.1u
:0.15V(OFF)
D209
AF POWER AMP
L904
2SB1132(Q,R)
IC313
Q204
R223
MA2S111-F
TDA7053AT
2SK1830F
Q308
DM SWITCH
180k
T:0V
INT/EXT
1
16
SWITCH
NC1
OUT1+
D209
R:4.92V(ON)
Q302
2
15
DM CHARGE/
:0V(OFF)
2SC4617(S)
VC1
NC4
DISCHARGE SWITCH
3
14
C215
Q308
NC2
PGND1
10u10
R359
2SK1824-A
4
13
15k
C346
VI<1>
OUT1-
5
12
47p
VP
OUT2-
5.04V
6
11
T:1.97V
R:1.97V(ON)
R266
R219
VI<2>
NC3
:2.36V(OFF)
C356
7
10
2.7k
220k
SGND
PGND2
R267
R362
47p
8
9
VC2
OUT2+
330k
D301
47k
C201
2.00V
AF AMP
D301
CP327
C348
47k*2
PROTECT
Q208
0.1u
C217
R206
C205
KDR367E-P
0.47u
5M
SQL RECTIFICATION
2SC4617(S)
NOISE AMP
120p
82k
0.1u
R361
T:1.09V
T:0.25V
1k
T:4.99V
R:0V(ON)
R:0.25V(ON)
R:4.99V(I)
:0.92V(OFF)
:2.22V(OFF)
PROTECT
:49.9mV(E)
Q307
D200
R200
UPA672T-A
HVC131
220k
R259
C275
R214
C209
INT/EXT SWEITCH
AF AMP,FILTER
Q301
SQL
2SJ347F
VOLTAGE
47k
100p
82k
120p
INT/EXT SWEITCH
C243
R260
C253
MIC MUTE
R368
MSW
CHARGE
1k
1000p
22k
0.1u
Q305
UPA672T-A
C352
DM
DM
HSDI
HSDI
0.1u
R357
C344
5M
5M
5CNS
5CNS
470
10u10
ASQL
ASQL
RSSI
RSSI
D303,307
V_REF
V_REF
PROTECT
SPOUT
SPOUT
AM
AM
EMC
LEDR
LEDR
LEDR
LCDBLT
LCDBLT
LCDBLT
LEDG
LEDG
LEDG
HSDI1
HSDI1
5RC
ME
ME
PTT
PTT
PTT
AFOUT
AFOUT
MICI
MICI
C149
L110
L111
L112
ANT
470p
4T
4T
4T
CN13
C151
C153
C156
2p
3p
4p
LCD UNIT
CN302
14
GND
L320
13
VCC
R603
12
CS
12
470
R604
11
SCLK
R605
470
10
SID
470
R606
9
SOD
R607
470
8
VEE
470
R608
7
SKEY
7
R609
470
6
AKEY
6
470
R610
5
BKEY
5
R611
470
4
CKEY
4
470
R612
3
LEDA
R613
0
2
LEDK
0
1
NC
FRONT-END RF AMP
5R
T:0V
R:4.87V
D207
Q207
T:0V
3SK318
T:0V
R:1.47V
BPF TUNING
R:4.82V
D205,206
C261
R273
C270
C267
BPF TUNING
0
T:0V
12p(G)
3p
6p(B)
C249
C251
C292
C289
C295
R:0.89V
C269
2p
2p(B)
2p
1p
470p
R252
4p(B)
(B)
47
T:5.05V
TUNE
R:1.64V
CLK
DATA
PF
L304
5MS
CN305
R:5.01V
T:4.99V(ON)
SP
:5.00V(OFF)
CN306
MIC
ME
CN301
14
SSW
SSW
13
SP+
12
SP-
L313
11
MSW
L312
R385
47
10
SB
EMC
9
ME
L307
8
R383
100
PTT
L308
R378
100
7
PF
D308
6
NNCD6.8G-A
NC
5
MIC INPUT PROTECT
E
L309
4
5M
L310
R380
100
3
TXD
L314
L311
R381
100
2
RXD
1
D302
D306
NC
DA221
DA221
L315
D302,306
L317
SURGE ABSORPTION
C375
47p
R363
R369
R373
R376
R388
470k
120k
56k
120k
10k
L316
TH300
-t
150k
LCD AVR
1.82V
C350
L305
Q304
5M
2SC4617(S)
3.3u4
L306
TX-RX UNIT
(X57-6413-01) (C/3)
T:7.19V
LAMP ON:5.12V
R:7.48V(ON)
Q309
MSW
Q306
:7.49V(OFF)
BUSY LED SWITCH
LCD LED AVR
CN303
TX LED SWITCH
LR
LG
LBL
Q311
2SA1362-F(Y)
PTT
T:4.96V
Q306
Q309
SW1
R:0V
2SC4617(S)
2SC4617(S)
T:0V
S600
R:4.94V(ON)
:0V(OFF)
SW2
PTT
R391
330
Q310
GND
2SC4617(S)
R386
CN304
S601
330
C369
SW1
100p
EMC
LEDR
LCDBLT
S602
LEDG
Q310
SW2
D309
D310
LCD LED
TX RED LED
RX GREEN LED
AVR SWITCH
PTT

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