Kenwood TH-K20A Service Manual page 40

TX-RX UNIT (X57-821x-xx )
5MS
D426
B30-1782-05
Q6
BUSY DCSW LEDG
LTC014EEBFS8
(GRN)
Q403
LTC014EEBFS8 PLLD INVERT
5MS
D427
B30-1779-05
TX DCSW LEDR
2SC5383-T111
(RED)
Q404
LTC014EEBFS8
LCD B38-0939-05
COM0~COM3,SEG0~SEG31
D414,D415 B30-2261-05
Q401 Q402
D416~D425 B30-2337-05
12A02CH 2SC4617(R)
LCD/KEY BACKLIGHT
DCSW DCSW LAMP
SB
KEY MATRIX
D404~D407
1SS388
D408~D411
MA2S111-F
DIODE KEYI1~KEYI4,KEYIS,KEYIT
MATRIX KEYO1~KEYO4
INPTT
PTT S418
MON
MONI
S417
S419
W02-3766-05
ENC1
ENC2
ENC
BATT
F300
BATT+ +B
7.5V
3.15A
PROTECT
BATT-
D301
GN1G
VR300 IC306
R31-0684-05
XC6209B502P-G
D302
RB521S-30
SB
AVR
PROTECT
5V
VOLIN
VOLOUT
VOL/PSW
XC6120N302N-G
IC1
MB15A02PFV2E1 LPF
PLPS
PLLE
DAT PLL SYSTEM
CLK
LD
3.3V
LOOP
Q7
REG
FILTER D4
TCXO HVC350B
MOD
19.2MHz
5C 5MS
X1
L77-1944-05
5C
D/A
ASSIST
CONV. D5
LSDO
HVC350B
IC300(6/8) IC300(5/8)
R2A20178NP
R2A20178NP
D/A
VCO oscillation frequency
FREQ
CONV.
RX: 174.850~212.845MHz(K,M,E)
TX: 136.000~173.995MHz (M)
144.000~147.995MHz (K)
5MS
144.000~145.995MHz (E)
5M
LEDG 5MSC
LEDR 5TC
5RC
PLLE
DAT 5CC
CLK
MCU
IC401
R5F2L3ACCKEKA
BATT PLLD
RESET
ENC1
EXPTT
ENC2
INPTT
MON
XOUT XIN
CLK
X400 DATA
L78-2974-05 E2PIN
5M
11.0592MHz E2PCS
BSFT
SW EEPROM
IC400
Q400
BR255640FV1-W
2SC4919-S
IC308
SB
Q308
D304 XC6209B502P-G
RB521S-30
AVR
DC SW
PROTECT
5V
5TC
5CC
5M
Q304 Q307
SSM3J05FU-F
LTA023JEBFS8
DC SW
5MS
DC SW
5MSC 5RC
RESET
RESET
IC305
Q3
MCH3914(7)-H
Q4
Q5
D1,D2
2SC5108(Y)F
1SV325F 2SC5636
BUFF RF
VCO
AMP AMP
5C
Q1
Q2
LTC014EEBFS8
RIPPLE 2SC5383-T111
SHIFT
FILTER D6
SW D3
DA2S101
HSC277
SHIFT
5C
Q201
KTC4080E-P
19.2MHz
DOUBLER
2nd Local
38.4MHz
5R
SQL
RSSI
AFO
THREM CD200
CURRENT
L79-1474-05
RSSI
SQL
VOX
WID/NAR DC SW
LSDI
Q200
LTA023JEBFS8
VDCSW
WIID/NAR
HSDO
SPM
IC303
NJM12904RB1
QT/DQT
LSDI
FILTER
IC302
NJM12904RB1
AF
FILTER
5C
D/A
VOLIN
SSM3J05FU-F
CONV.
5T
IC300(2/8)
R2A20178NP
5R
Q102 Q103
D7,D8 Q101
RFM01U7P RD07MUS2BT112
HSC277 2SC4926YD
PRE
TX/RX DRIVE FINAL
DRIVE
SW AMP AMP
F101
5T 5R 5T
0.5A
CURRENT
IC300(8/8)
R2A20178NP
VDCSW VDC SW
D/A
POWC
CONV.
Q104
LTC014EEBFS8
5MS
1st Local frequency
174.850~212.845MHz(K,M,E)
IC200
Q203
Q202 MCF
TA31136FMG
3SK318
KTC4080E-P BPF
38.85MHz
IF
IF SYSTEM MIXER
AMP
XF200
L71-0669-05
5R 5R
5R
CD
RF BPF
TUNE
D200,D201,D204
CF200
HVC350B
L72-1042-05
450kHz
IC307
HSDO
TA7368FG
VOLOUT AF POWER AMP
5MS
Q306
SSM6J08FU(F) LTC044EEBFS8
F301
SB DC SW
5MS
0.315A
IC300(3/8)
IC304 IC301
HSDO
R2A20178NP
NJM12904RB1 NJM12904RB1
D/A MIC AMP V REF/
MOD
CONV.
LIMITER MIC AMP
5VC
DC SW
VOX DET
VOX
Q300
LTA023JEBFS8
D300 5MS
KDR731
RX: 136.000~173.995MHz (K,M,E)
TX: 136.000~173.995MHz (M)
144.000~147.995MHz (K)
144.000~145.995MHz (E)
D103-D105
RN1425
D101,D102
HVC131
ANT
ANT SW
+B
TH101
5T THREM
Q204
3SK318 BPF
RF
AMP
5R
RF BPF D203
TUNE HVC350B
IC300(7/8)
D/A
BPF
R2A20178NP
CONV.
5MS
J301
E11-0717-05
Q305 Q303
SPG
2SK3577-A 2SK3577-A
TXD
EXT
SPK
SP
MUTE MUTE MUTE
AFO
SW SW SW
Q301
CN300
INT
DC SW DC SW
SP
Q302
LTC044EEBFS8
SPM
IC300(1/8) EXT
J300
R2A20178NP MIC
E11-0484-05
EXPTT PTT/RXD
D/A
MIC
CONV.
IM
5MS
5MS
5C
MIC300
T91-0673-05
INT
MIC
MIC