Kenwood TK-3230 Service Manual page 53

TX-RX UNIT (X57-7330-10)
IC400
XC61CN2802N 3.80V
2.99V
3 2 SB
NC VIN
3M
4 1 2.977V DC SW (3T)
IC404
VSS VoUT
3.80V BH30FB1WG Q404 2.89V
BATL
KRA305E
1 5
VOLTAGE DETECT VIN VoUT
2
RESET SW GND DC SW (3C)
3 4
Q405 2.845V
IC401 STBY NC
XC61CN2702N KRA305E
3 2
NC IN
VOLTAGE
REGULATOR(3V)
DC SW (3R)
4 1 C428
VSS oUT RESET Q406 2.94V
KRA305E
100p
D400
B30-2143-05
R400
0
TX/BUSY
LCD
D401
BACKLIGHT 3M 3M
B30-2278-05
R:0.03V
TX
T:2.985V
DC SW
(BACK LIGHT) DC SW DC SW
(BUSY) (TX)
Q400
Q401 Q402 R:2.976V
DTC114EE DTC114EE DTC114EE T:0V C460 R:0.03V R444 R445
R418 R422 R423
T:2.99V ON:0.03V
0 1.5k
0 39k 39k 0.1u
GLED
R:0V BUSY
ON:2.82V T:2.97V C413
L401
0.1u
EEPROM
IC406
BR24L08FJ-W
1
A0
2
A1
3
A2
4
GND
EEPCLK
BOOT
41 20 R435
42 MENU BOOT 19 47k
CALL TO
43 18
R479
EEPDATA TO
1.8k
44 17
EEPCLK RDF RDF
45 16 R433
MIC MUTE TCLK TCLK
46 15 47k
SHIFT TDATA
R410 100 47 14
PDATA
DI/O
R411 100 48 13
PCLK DIR R434
49 12 R431 10k
PEN BEEP BEEP
R491 100k 50 MCU 11 10k L403
3MSC PC PC
IC403
R466 100k 51 D338327A22WV 10
PABC SCLK
1.834V
52 9
SP AMP RESET RESET
53 8
CP400 SEG TEST
RK74HB1J103J 54 7
SEG OSC1
55 6
RESET R446
SEG OSC2
56 5 DOWN
PTT
SEG VSS R447
57 4 MENU
CP401 SEG X2 R448
UP
RK74HB1J103J 58 3
SEG X1 R449
CALL
59 2
SEG AVSS R450
MONI
60 1 R464
SEG SP DET SPDET
1k
SCLK
CP402
RK74HB1J103J
R419 47k
R420 47k
L402
R421 47k
R406 1k
COM3
R407 1k
COM2
R408 1k CL2 CL1
COM1
LCD
R428 100
IC405
R472 1M TC7W74FU-F
C437 1
ON:2.988V CK
0.01u 2
OFF:0V D
X400 3
Q
C422 R429 7.37MHz R430 C427 BEAT
4
SHIFT SW GND
0 0
33p L77-3036-05 33p
Q408
Q403 2SC4919
2SC4919 DIVIDER
BEAT
C417
SHIFT SW
SB SB R339
0
2.969V
3T 3T MOD
Q301
SPAMP 2SK1824-A
SPEAKER AMP
TO
3C 3C
R315
VR300
3R 3R 47k
15k
3M 3M C331 R336
BEEP
0.047u 22k
R482
B
27k
SPDET
ACTIVE FILTER
IC301
NJM2100V-ZB
QT/DQT_IN
1 AoUTPUT 8
V+
2 A-INPUT 7 R319
8
VCC BoUTPUT
3 6 82k
7 A+INPUT
WP B-INPUT
4 5
6 V-
SCL B+INPUT
5
SDA
R310 R314
100k 56k
3M 3M
3T 3T
C320 R322
PTT SW
AFO
S1 10u 18k
R:1.33V
R318
KEY TOP
BASE BAND 100k
AUDIO MUTE SW
1k S2 IC300
AK2346 Q300
S3 2SK1824-A
1k 1.485V
C307 1u 1 AGNDIN 24
S4
1k TEST
C308 1u 2 23 C316 1.473V
S5 AGND
1k RXIN
3 TXIN 22 220p
S6
1k RXINo
R305 270k 4 21
TXINo
RXLPFo
C303 9p 5 20 1.488V
2.977V LIMLV
6 RXAF 19 R323 470k
EXTLIMIN
RXAFIN C314
R300 R476 R307 7 MOD 18 R321 C319 2700p
EXPOUT
15k 0 0 8 VSS 17 3900p 22k
VDD
9 16
TCLK
XIN
10 TDATA 15
XOUT
11 14
D_IO
DIR DIR
12 13 SW
RDF_FC
SCLK
SCLK
DI/O
R492
22k
AF DETECT
D302
8
RB706F-40
VCC
7
PR
6
CLR
C431 R443
5
Q
0.01u 1k
TO
MOD
3T
470p
3C
3R
C443
3M
B
100p
AUDIO POWER AMP
IC303 SHIELD CASE (VCO)
LM4865M-N
LV
1 8 L300
D4
VDD Vo2
2 7 C351 INT.SP L4 TX MODULATION
C14
-Vin Bypass
3 6
0.15u 33n 4.2p
SD GND
4 5 L301
DC vol. Vo1 L15 L2
1.0u
FREQUENCY
CONTROL
R:2.843V
T:0.833V
R6 R17
VR301
680 56k
R31-0667-05
D308 10k CURRENT
SURGE STEERING
ABSORPTION
R7
R:2.823V 47k
D304 T:0.08V
REVERSE 3.8V
R:0.117V
PROTECTION
F300 T:1.764V
F53-0324-05
L410 Q1
2SK1824-A
BATT
2.5A
DC SW (T/R)
MIC300
R358
INT.MIC
0
3C
L407 3T
J300
R360 PTT
MIC
0 IM
R354
EXT.SP
R352 100 SPG MIC
R361 TXD
470 0
SPK
AFO
C50
D306,307
3p
VOLTAGE R3 R8 R10 L13
PROTECTION
1k 100 0 12n
TB31202FNG
1
FIN1
L1 R4 2
3C
VCC1
10 3
CP1
4
GND1
R13 0 5
LD
C7 100p R14 100 6
CK
C8 100p R15 100 7
DATA
8
C9 100p R16 100
MIC AMP/LIMITER STB
IC302 C329
TK62012F PEN
180p PHASE LOCKED
PDATA
1 8 LOOP SYSTEM
AoUT VDD PCLK
2 7 R332
A-IN BoUT UNLOCK DETECT
3 6 82k R335 C333 R338 C336
A+IN B-IN UL
4 5 1k 0.1u 15k 0.1u
VSS B+IN
3C
C327 R333
VCXO
6.8k 12.8MHz
0.068u
MIC MUTE/AGC SW
X1
D301 D303 R474 L77-3019-05
RB706F-40 DAN222
R340 0
C332 R346
Q303
4.7k
0.1u 4.7k 2SC4919
AGC DETECT
MIC MUTE/AGC
R43
10k
R342 R356 330
R357 330
1k Q302
2SK1824-A
SURGE
ABSORPTION
VOX SW
TO TO
MOD MOD
3T 3T
3C 3C
3R 3R
3M 3M
B B
R29
R:0.36V
1.576V T:0.33V
33k 1.365V
RF AMP
C27 R:0.783V L409
RF BUFFER AMP Q6 C44 C48
1.6V T:0.77V
15p Q5 2SC5066-F(O)
5p 3.3n 470p
VCO Q2 2SC5066-F(O) C459 C43
2SC5488 C33
5p 10p
0.5p
0.765V
0.38V
R40
10k
L6
1.0u
RIPPLE FILTER
Q4
2.837V 2SC4617(S)
3C 1.934V
2.626V
CURRENT
STEERING
3C 3C
3M 3M 3M
3T 3T
C51
2.842V
3p
L14 C35 R30 0.74V 3R 3R 3R
12n 10p 100k
Q3
2SC5488
RF AMP
2nd IF
450kHz
IC1
CF200
C207
16
0.1u
FIN2
15
VCC2
14
R:2.837V
CP2
13
GND2
12
SW
11 C23 R24 R26 C34 C206 R:2.478V
XIN
10 0.01u 0 0 10p 270p R:1.588V
XoUT C215
9 2.792V
BUF
0.01u
IF SYSTEM
IC200
R202 TA31136FNG
3.3k R:0.697V
IF AMP
R:2.882V
Q201
R200 R205 C216 2SC4082
1.2k 3.3k 0.01u
R:0.938V
R:2.835V
R:2.833V R207
3.3k
C30 R44 L7
Q200
470 10u KRA304E-P
0.01u
RX W/N SW
3R 3R
3R
3M
B B B
TX PRE-DRIVE TX DRIVE TX FINAL
Q101
Q103 Q104
2SC5092-F RQA0004PXDQS RQA0002DNS R:3.776V
RF SW T:0.751V T:0.78V T:2.77V T:0.8V T:3.793V T:0.593V ANTENNA SW
L411 L102 L105
D6 C101 R469 R470 R471 C113 C120 L106 R128 C134 D101
HSC277 1.5p 3.3n 0 0 0 15p 15n 470p 3.3n 2.2n 0 100p HVC131
R:1.622V
RF SW
D7 3T
HSC277
R:0.754V
THP
DAC
R:0V
IC100
T:1.2V(Hi)
BH2219FVM 0.846V(Low)
8 1 R131
PC LD Ao1
7 2 470
B
CLK Ao2
6 3
DI TESTMoNI
5 4
GND VCC
3T
C254 L219 L221 L222
470p 3T 3T 3T
2nd LOCAL
38.4 MHz
C232 C235
33p 33p
R:0.7V R:2.84V
R211 R214 C228 L208 L210
2.2k 330k 0.01u 220n 220n
Q202
2SC4082
TRIPLER
B
R:0V
T:0.819V
C244 C247 R484 L220
IF 470p 470p 4p 4p 0 3T
1st IF
R:2.93V
38.85MHz
R:2.928V
XF200
C219 R234 R215 R217 C231 L211 MIXER
Q203 R:1.658V
RF AMP
0.01u 0 560 560 0.01u 270n 3SK318
C243 R224 Q204
L218
3SK294-FP
0 L79-1807-05
47p
C236 C252 L215 R231 C253 C259
24p 47p 39n 0 47p 470p
R:1.07V R:0.254V
D200,201
ANTENNA SW
R468
0
B
ANT