Kenwood NX-800H Service Manual page 57

AT
TX-RX UNIT (X57-7750-18) (A/2)
HD2
X2_CLKIN
2
33M_4
BSHIFT
1
LINE
PROTECTION
D501
1SS388F
D502
1SS388F
450K
PLD
9
9
9
CONTROL (E23-1278-05)
CN506
CN612
TX-MODULE (E23-1278-05)
CN511 CN513
AU
SCHEMATIC DIAGRAM
3.31V
IC508
SM5023CNDH-G X502
18.432MHz
4 3
C530
Q VSS
0.01u
5 2 3
VDD XT oUTPUT
6 1
XTN INHN
4
VCC
BUFFER AMP
(18.432MHz)
C531
0.1u
D
L518
80C
13
CN595
VCO (E23-1278-05)
CN509 CN611 CN512 CN516
CN614
RX-IF (E23-1278-05)
CN503 CN505 CN507
CN517
AV
2
IC511
TC7SH08FU-F
1 INB
2 INA
3
GND
AND
(PCS RF/HD2)
2
GND
R594 D
1k
1
VC
D
1
50C
13
9
CN527 CN540
RX-FRONT (E23-1278-05)
CN510 CN502
TX-DRIVE (E23-1278-05)
AW
NX-800H
R915
0
3.31V
5
VCC
D503
4
oUTY
1SS416
REVERSW
CURRENT
PREVENTION
(PCS RF)
33GPS
D
C828
100p
13
RX-IF GND
CN543 R562 0
R548 0
R565 0
R550 0
CN504 CN508
AVR (E23-1278-05)
CN520 CN542
X57-775 (A/2) 10/16
AX
2
1
450K
PLD
13
9
DIGITAL GND
R916
R534 0
0
R917 C630
D 0 D 0.1u
R574
C620
0
0.01u
D D
57