Kenwood NX-300 Service Manual page 102

POWER SW/
CHANNEL
AF VOL SELECTOR
CN403
CN1
1
/CS
/RES
A0
/WR
D0
D1
D2
D3
D4
D5
D6
D7
VDD
VSS
VDD
V1
V2
V3
V4
V5
20
CN710
CN737
OPTION PCB
X57-737 B/2
SWITCH UNIT
X41-372
6KEY/SP/MIC
CN23
CONTROL PCB
X53-426
CN701
CN405
UNIVERSAL CONNECTOR
CORD ASSY
CN404 CN900
X42-334
1 1
LED_G
LED_G
/EMG /EMG
LED_R LED_R
IFC IFC
/SAVE /SAVE
I2CCK I2CCK
/5TC /5TC
I2CSDA I2CSDA
SBC SBC
/T_R /T_R
TV2 TV2
ASSIST
ASSIST
TV1 TV1
VAGC VAGC
5RC 5RC
TCXO_MOD TCXO_MOD
PGND GND
RSSI RSSI
PGND GND
CV CV
AGND GND
NC NC
NC NC
+B +B
+B +B
+B +B
+B +B
NC NC
NC NC
AGND GND
/PTT /PTT
Side_G Side_G
Side_1 Side_1
W_/N W_/N
SDO1 SDO1
Side_2 Side_2
/PCS_RF /PCS_RF
/DSW
/DSW
APC APC
/APCSW /APCSW
VCO_MOD VCO_MOD
THP THP
PLD PLD
38M 38M
SCK1 SCK1
GND GND
S_DET S_DET
GND GND
NC
NC
IF_DET IF_DET
50 50
ANT
SWITCH UNIT
X41-371
CN901
PTT
PTT
GND
Side_G
Side_1
Side_1
Side_2
Side_2
TX-RX PCB
X57-737 A/2