Kenwood NX-900 Service Manual page 88

U
NX-900
CE
X2_CLKIN
2
SM5023CNDH-G
4
Q
5
VDD
6
XTN
BUFFER AMP
(18.432MHz)
BSHIFT
1
D501,502
LINE
PROTECTION
D501
1SS388F
D502
1SS388F
450k
9
9
CONTROL (E23-1278-05)
CN506 CN509
9
CN612 CN614
TX-MODULE (E23-1278-05)
CN511 CN513 CN517
R880
0
88
X57-806 (A/2) 5/14
V
SCHEMATIC DIAGRAM
2
3.31V
R596
10k
IC508
X502
L77-3015-05
3
C530
VSS
0.01u
2 3
XT oUTPUT GND
1
INHN
4
VCC VC
C531
0.1u
D
13
CN595
VCO (E23-1278-05)
CN611 CN512 CN516 CN527
RX-IF (E23-1278-05)
CN503 CN505 CN507 CN510
W
2
IC511
TC7SH08FU-F
1 INB
VCC
2 INA
3
GND
oUTY
AND
(CPS/FSX0)
2 0.33V
R594 D
1k
1
D
1
50C
13
13
9
RX-FRONT (E23-1278-05)
CN540 CN543 CN502 CN504 CN508
TX-DRIVE (E23-1278-05) AVR (E23-1278-05)
CN520 CN542
X
TX-RX UNIT (X57-8060-10) (A/2)
2
3.33V
5
R114
0
4
33GPS
D
C828
100p
RX-IF GND DIGITAL GND
R916
R546 0 R562 0
0
R917
R548 0
D 0 D
R565 0
R574
R550 0
0
D
Y
2
1
450k
13
9
R534 0
C630
0.1u
C620
0.01u
D