Kenwood TK-2302 Service Manual page 46

X57-7570-20 (TX-RX UNIT)
Fuse
2.5A
F301:
5C_C
F53-0324-05
Battery
Protector
Voltage
Regulator
D301:GN1G
IC303:
XC6209B502PR
Rectifier
Power Switch/
AF Volum
R31-0670-15
1
D302:
B
HRC0203C
2
SB
3
AFVOL_IN
4
AFVOL_OUT
Voltage
5
Regulator
6
EN1
IC304:
7
XC6209B502MR
EN2
8
9
EN3
10
EN4
11
EN5
SB
Channel
Selector
S60-0440-05 LED
D303:B30-2315-05
LEDTX
Switch
Q301:RT1N441U
SB
R301
BATT
R305
PTT
PTT
SIDE1 SIDE1
SIDE2
SIDE2
Shift
BSHIFT
Switch
Q305,Q306:2SC4919
B
5C
5T_C 5C
5T PLL_UL Rectifier
Switch
Q1:KTC4075E(Y,GR)
Q304:DTB723YE
PLL_DAT
5R_C 5M PLL IC
QTTCXO
PLL_CLK
PLL_STB
12.8MHz
Switch 5R TCXO
Q303:RT1P141U X1:L77-3042-05 IC1:
MB15A02PFV2E1
5M
5R
Voltage
Reset Tripler
Detector
IC301: Q2:2SC4774
BD4840FVE
SB
LED
D304:B30-2314-05
LEDRX
Switch
Q302:RT1N441U
PLL_UL TH_DET
BATT BUSY
EN1 RSSI
EN2 VOX
EN3 STD
EN4 RDF/FD
EN5 QT/DQT_IN
Reset OPTDET
RXD
5M
QTTCXO APC_SW
QTVCO PCTV
TX_SW W/N
RX_SW TXD
5T_C AF_CONT
5C_C DTMF
MCU
5R_C DTRLOADN
IC306:R5F212CCKCMB PLL_DAT TDATA/DTRCLK
PLL_CLK SCLK
PLL_STB 1/2_OSC
LEDTX MIC_MUTE
LEDRX EEPCLK
BSHIFT DC_SW
14.746MHz
DI/O
Ceramic
EEPDAT
Oscillator
X301:L78-1433-05
Q7:RT1P430U
RX_SW Switch
5C
Oscillator:
Lipple
349.700~
Filter
425.700MHz
Rx VCO
Q6,Q10:
KTC4075E(Y,GR)
Q4:2SK1875-F(V)
D3,D6:1SV325F
Q8:RT1P430U
Frequen-
Loop Buffer
Switch TX_SW
Amp
Filter
Q9:2SC5636
UPB1509GV
Oscillator:
5C
272.000~
348.000MHz
MOD Tx VCO
QTVCO
RF Amp
Q5:2SK1875-F(V)
D4,D8:1SV325F
D9:1SV278F
Q3:2SC5636
Low Pass
5C 5R
Filter
2nd Local:38.40MHz
IF Amp
Q202:2SC4774
2nd IF:450kHz
Ceramic
FM IF IC
5R
Filter
RSSI
CF201:L72-0973-05
Discrimi-
BUSY
nator
DET
IC201: CD201:L79-1866-05
TA31136FNG
5M STD
RDF/FD
TCLK/DTRDO
QT/DQT_IN
AFVOL_IN
MOD
1/2_OSC
Switch
W/N
Q307:RT1N441U
VOX
5M
D306:KDR731
EEPCLK
EEPROM
EEPDAT
IC305:BR24L16F-W
PCTV
Switch
5T
APC_SW
Q107:2SK1824-A
Tempera-
TH_DET ture
Detector
APC_SW Switch
TH101
Q106:RT1N441U
5C 5C 5T 5R 5T
Tx:136.000~
174.000MHz
Tx/Rx Pre-drive
cy
RF Amp
Amp
Switch
Divider
D10:MC2858
IC2: Q11:2SC5636 Q101:
2SC4926YD RQA0004PXDQS
5R PCTV
1st Local:
174.850~
Q203:
212.850MHz
Band
3SK318
1st
Pass RF Amp
Rx:136.000~174.000MHz
Mixer
Filter
D202,D203:1SV305F Q204:3SK318
1st IF:38.85MHz
MCF
XF201:L71-0619-05
5R
W/N
Switch
Q201:RT1P441U
SB
Q313:
2SB1694
Switch
AF
AFVOL_OUT Power
DI/O DIR DTMF DET
Amp
IC309: Q314:RT1N441U
TA7368FG Q315,Q316:2SK3577-A
SCLK
TDATA/DTRCLK
Audio Prosessor
DTRLOADN
IC308:AQUA-L
Mic
AGC/
MIC_MUTE
Mute
Q308:KTC4075E(Y,GR)
Q310:2SC4116(GR)F
Q311:2SA1586(Y,GR)F
D308,D309:KDR731
Detector Limiter
D307:MC2850
B
IC101:
BA2904FVM
APC
Q103:RT1N441U
Switch DC_SW
Tx/Rx:
Switch
136.000~
174.000MHz
Protector D101:UDZW5.1(B)
Q108:RT1P441U
B 5T
B
Drive Final ANT Low Pass
Amp Amp Switch
Filter
Q102: Q105: D103:HSC277
RD07MVS1BT122 D104,D105:HVC131
5R PCTV
Band
Pass
Filter
D204,D205:1SV305F
Switch AF_CONT
Q312:RT1N441U
Mute
Speaker
Switch
T07-0369-15
TXD
SP/MIC Jack
E11-0703-05
RXD
OPTDET
5M
Mic
MIC301:
T91-0651-15