Kenwood TK-3230 Service Manual page 41

TX-RX UNIT (X57-7330-10)
IC400
XC61CN2802N
2.99V 3.80V
3 2
SB
NC VIN
3M
2.977V
4 1 DC SW (3T)
VSS VoUT IC404
BH30FB1WG 2.89V
3.80V Q404
BATL KRA305E
1 5
VOLTAGE DETECT VIN VoUT
2
GND DC SW (3C)
RESET SW
3 4
IC401 STBY NC Q405 2.845V
KRA305E
XC61CN2702N
3 2
NC IN
VOLTAGE
REGULATOR(3V)
DC SW (3R)
4 1
VSS oUT RESET C428 Q406 2.94V
KRA305E
100p
D400
B30-2143-05 R400
0
TX/BUSY
LCD
D401
BACKLIGHT
B30-2278-05 3M 3M
R:0.03V
TX
T:2.985V
DC SW
DC SW DC SW
(BACK LIGHT)
(BUSY) (TX)
Q400 Q401 Q402 R:2.976V
DTC114EE R:0.03V R444 R445
DTC114EE DTC114EE T:0V R418 R422 R423 C460
T:2.99V ON:0.03V
0 1.5k
0 39k 39k 0.1u
GLED
R:0V BUSY
ON:2.82V T:2.97V
L401 C413
0.1u
EEPROM
IC406
BR24L08FJ-W
1
A0
2
A1
3
A2
4
GND
EEPCLK
BOOT
41 20 R435
MENU BOOT
42 19 47k
CALL TO
43 18 R479
EEPDATA TO
44 17 1.8k
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 10
D338327A19WV
PABC SCLK
52 9 1.834V
SP AMP RESET RESET
53 8
CP400 SEG TEST
RK74HB1J103J 54 7
SEG OSC1
55 6 RESET
SEG OSC2 R446
DOWN
56 5 PTT
SEG VSS R447
MENU
57 4
CP401 SEG X2 R448
UP
RK74HB1J103J 58 3
R449
SEG X1 CALL
59 2
R450
SEG AVSS
60 1 MONI
R464
SEG SP DET SPDET
1k
SCLK
CP402
RK74HB1J103J
R419 47k
R420 47k
R421 47k L402
R406 1k
COM3
R407 1k
COM2
R408 1k CL2 CL1
COM1
LCD
R428 100
R472 1M
TC7W74FU-F
C437
1
ON:2.988V CK
2
OFF:0V 0.01u D
X400 3
C422 7.37MHz C427 BEAT Q
R429 R430 4
SHIFT SW GND
33p 0 L77-3026-05 0 33p
Q408
Q403
2SC4919
2SC4919 DIVIDER
BEAT
SHIFT SW
R339
SB SB
0
2.969V
3T 3T MOD
Q301
SPAMP 2SK1824-A
SPEAKER AMP
TO
3C 3C
R315
VR300
47k
3R 3R 15k
C331 R336
3M 3M
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 3 BoUTPUT 6 82k
7 A+INPUT
WP B-INPUT
6 4 V- 5
SCL B+INPUT
5
SDA
R310 R314
100k 56k
3M 3M
3T 3T
PTT SW C320 R322
AFO
10u 18k
S1
R:1.33V
R318
KEY TOP
BASE BAND
100k AUDIO MUTE SW
S2 IC300
1k
AK2346 Q300
S3 2SK1824-A
1k
C307 1u 1 24 1.485V
S4 AGNDIN
1k TEST
C308 1u 2 23 C316
S5 AGND 1.473V
1k
3 TXIN RXIN 22
S6 220p
1k
RXINo
R305 270k 4 TXINo 21
RXLPFo 1.488V
2.977V C303 9p 5 LIMLV 20
RXAF
6 19 R323 470k
EXTLIMIN
RXAFIN
R300 R476 R307 7 MOD 18 C314 R321 C319 2700p
EXPOUT
15k 0 0 8 17 3900p 22k
VSS
VDD
9 16
TCLK
10 TDATA XIN 15
XOUT
11 D_IO 14
DIR
DIR
12 RDF_FC 13 SW
SCLK
SCLK
DI/O
R492
22k
IC405 AF DETECT
D302
8 RB706F-40
VCC
7
PR
6
CLR C431
5 R443
Q
0.01u 1k
TO
C417 MOD
3T
470p
3C
C443 3R
3M
B
100p
AUDIO POWER AMP
IC303 SHIELD CASE (VCO)
LM4865M-N
LV
1 8 L300 D4
VDD Vo2
C351
2 7 INT.SP L4 C14 TX MODULATION
-Vin Bypass
3 6 0.15u 33n
SD GND 4p
4 5 L301
L2
DC vol. Vo1 L15
220n
FREQUENCY
CONTROL
R:2.843V
T:0.833V
R6 R17
VR301
1k 56k
R31-0667-05
D308 10k CURRENT
STEERING
SURGE
ABSORPTION
R7
R:2.823V
47k
D304 T:0.08V
REVERSE
3.8V
PROTECTION R:0.117V
T:1.764V
F300
F53-0324-05
L410
Q1
2SK1824-A
2.5A BATT
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
3C L1 R4 2
VCC1
10 3
CP1
4
GND1
R13 0 5
LD
6
C7 100p R14 100
CK
7
C8 100p R15 100
DATA
8
C9 100p R16 100
STB
MIC AMP/LIMITER
IC302 C329
TK62012F PEN
PHASE LOCKED
180p PDATA
1 8 LOOP SYSTEM
AoUT VDD PCLK
2 7 R332
A-IN BoUT UNLOCK DETECT
3 6 68k R335 C333 R338 C336
A+IN B-IN UL
4 5 1k 0.1u 15k 0.1u
VSS B+IN
3C
C327 R333
VCXO
0.068u 6.8k 12.8MHz
MIC MUTE/AGC SW
X1
D301 D303
R474 L77-3019-05
RB706F-40 DAN222
R340
C332 0
R346 Q303
4.7k
2SC4919
0.1u 4.7k
AGC DETECT
MIC MUTE/AGC
R43
10k
R342 R356 330
1k Q302 R357 330
2SK1824-A
SURGE
ABSORPTION
VOX SW
TO TO
MOD MOD
3T 3T
3C 3C
3R 3R
3M 3M
B B
R:0.36V R29
1.576V T:0.33V 1.365V
33k RF AMP
C27
RF BUFFER AMP R:0.783V C44 L409 C48
1.6V T:0.77V Q6
Q5 2SC5066-F(O)
13p 3.3n
VCO Q2 2SC5066-F(O) C459 C43 5p 470p
2SC5488 C33
5p 10p
0.5p
0.765V
0.38V
R40
10k
L6
1.0u
RIPPLE FILTER
Q4
2SC4617(S)
2.837V 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 100k
10p
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 0
0.01u 10p 270p R:1.588V
XoUT
9 2.792V C215
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 L7
R44
Q200
0.01u 470 10u KRA304E
RX W/N SW
3R 3R
3R
3M
B B
B
TX PRE-DRIVE
TX DRIVE TX FINAL
Q101 Q103 Q104
2SC5092-F RQA0002DNS
RF SW T:0.751V T:0.78V T:2.77V T:0.8V 2SK3656-F T:3.793V T:0.593V R:3.776V ANTENNA SW
D6 C101 L411 R469 R470 R471 C113 L102 C120 L105 L106 R128 C134 D101
1.5p 3.3n 0 0 0 15n 2.7n 2.2n 0
HSC277 15p 470p 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 1k 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
220n 220n
2.2k 330k 0.01u
Q202
2SC4082
TRIPLER
B
R:0V
T:0.819V
C244 C247 R484 L220
IF 4p 0 3T
470p 470p 4p
1st IF
R:2.93V
38.85MHz
R:2.928V
XF200
L211 MIXER
C219 R234 R215 R217 C231
Q203
R:1.658V RF AMP
0.01u 0 560 560 0.01u 270n 3SK318
C243
R224 Q204
3SK294-FP L218
L79-1807-05
47p 0
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