Kenwood 144MHz FM TRANSCEIVER K2E - Manual (Page 54)

TH-K2AT/K2E/K2ET
SCHEMATIC DIAGRAM
R237 100k
D49
B30-2237-05
R231 150
R238 1k
D48
B30-2237-05
R236 1k
D60
R252 100k
D62 D63 D65 D64
C313 0.039u
C304
1000p
R239
1k
R241
330k
C307 0.1u
R242
330k
C299
1u
R243
330k
R240
100k
C318 1000p
C317 1000p
R255
0
C298
1000p
C300 1000p C302 1000p
C305
1000p
C306
1000p
C308 1000p
CPH3317
Q55
D69
MA2S111
D70
MA2S111
D71
MA2S111
D72
MA2S111
IC15
AT25160N10SI27
1
CS
2
SO
3
WP
4
GND
5
6
7
8
R263 10k
C303 150u6.3
IC11
S-80930CNNBG80
1
VSS
2
VDD
4
OUT
3
CD
IC10
S-80844CNNBB85
1 2
4
VSS
3
NC
CN6
1
2
3
4
5
6
CN7
1
2
3
4
5
6
CN9 1 2 3 4 5 6 7 8 9 10 11 12 13 14
R328 470k C344
1000p
C345 1000p
C346 1000p C347
1000p
C348
1000p
C354
1000p
C355 0.01u
S7
S70-0485-05
Q51
RN4902
Q41
RN2105
Q57
RN2105
IC12
TK11250CUCB
1
NP
2
GND
3
CONT
4
VIN
6
V
OUT
IC9
TK11250CM
1 2 3
4
V
OUT
5
GND2
6
VIN
C309 1u
C311
0.1u
C314 1000p
C330 1000p
C316
0.1u
C319 10u10
Q53
RN2701
C515 * C516 * C514 *
C243 1000p
D46
B30-2205-05
D44 *
CN8 1 2 3 4 5 6 7 8 9 10 11 12 13 14
MIC1
D47
*
R230 *
2SK1830
Q50
R337 470
R336 220
D42
B30-2205-05
D43
B30-2205-05
R248
3.9k
C312 0.039u
R246
3.9k
C310
1u
L63
R244
0
C297
0.1u
EEPROM
SET
INT0 RESET
BIT3
MONI
JUMPER
PTT
LAMP
KEY
TYPE
BIT2 BIT1 BIT0
PTT BOARD
5.0V AVR
PTT
KIN4
KYO2
KYO1
BL
GND
KIN3 KY
O2
KIN0 KY
O1
KIN2 KY
O0
GND LAMP MIG KIN4 8M KY
O3
IM KIN1
5C/5R/5T AVR
5.0V AVR
4.4V VOLTAGE DETECTION 3.3V VOLTAGE DETECTION
5R/5MV
SW
10KEY BOARD
TX-RX UNIT
(X57-674X-XX)(B/3)
MENU
TX-RX UNIT
(X57-674X-XX)(C/3)
5MS SW
5C SW
5T SW
LCD LED SW
KEY LED SW
KEY
ILLUMINATION
LED
D42-44,46,47
D48,49
LCD
ILLUMINATION
LED
KEY TYPE
DETECTION
D60 D62-65
MARKET CODE
DETECTION
REVERSE
CURRENT
PREVENTION
D69-72
PO
WER SW
BPF/APC
+B 5MS
AFM
PLLLD
KAPC
DATA
SMV
SQV
5MV
CLOCK
QT/DQT
VOLIN
5C
5R
MOD
TO
5MS
5T
NAR
SHIFT
PLLEN
+B
TEMP
FINAL
5M
SI
SCK
HOLD
VCC
BATT
5MS SW
LAMP
5C SW
VOX
5R SW
5T SW
PTTI
5M
EEPDI
EEPCS
BPF/APC
MIG
IM
+B
5M
8V
KIN3
KIN0
KIN2
KIN1
KIN4
TYPE
KOUT3
KOUT2
KOUT1
KOUT0
VUKEY
INT0
PWR SW
RESET
*
7
1/F
4
2/VFO
5
8
0
6
9
#
3/MR
MR
F/CALL
VFO
CALL
* * *
CONT GND1
NP
OUT VDD
5T
VOLIN
NAR
MOD
TO
5R
5MS
QT/DQT
SQV
SMV
CLOCK
DATA
KAPC
AFM
PLLEN
PLLLD
SHIFT
+B
5C
FINAL
TEMP
MA2S111 MA2S111
ON:6.90V
4.83V 4.66V
4.92V
4.68V 4.69V
T:4.95V
R:0V
T:4.95V
R:0V
5.01V
T:0V
R:4.90V
ON:4.78V
K L M N O
X57-674 3/5
TX-RX UNIT (X57-674X-XX)(A/3)