Terminal Function - Kenwood NX-800 Service Manual

Uhf digital transceiver
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NX-800
Display unit (X54-3640-10)
Pin No.
Name
CN901 (to TX-RX unit A/2 CN597)
1~6
SPO
Speaker input.
7
GND
Ground.
8
80C
8V input.
9,10
SB
Power input of switched power supply.
11
NC
Non-connection.
12
/PSW
Detection signal output of power switch.
13,14
GND
Ground.
15
MIC
MIC signal output.
16
ME
MIC ground.
17
GND
Ground.
18
AFO
RX filtered AF signal input.
19
/PRST
Display CPU reset signal input.
20~23 GND
Ground.
24
SHIFT
Control signal input of Beat-shift function.
25
NC
Non-connection.
26
5C
5V output.
27
TXD
Serial data signal input.
28
RXD
Serial data signal output.
29,30
GND
Ground.
CN902 (to internal speaker)
1
GND
Ground.
2
SPO
Speaker output.
CN905 (to LCD ASSY)
1
V5
LCD Drive voltage output.
2
V4
LCD Drive voltage output.
3
V3
LCD Drive voltage output.
4
V2
LCD Drive voltage output.
5
V1
LCD Drive voltage output.
6
Vdd
LCD Driver DC power supply.
7
Vss
LCD Driver Ground.
8
Vdd
LCD Driver DC power supply.
9
D7
LCD Driver data output.
10
D6
LCD Driver data output.
11
D5
LCD Driver data output.
12
D4
LCD Driver data output.
13
D3
LCD Driver data output.
14
D2
LCD Driver data output.
15
D1
LCD Driver data output.
16
D0
LCD Driver data output.
17
/WR
LCD Driver WR signal output.
18
A0
LCD Driver address output.
19
/RES
LCD Driver Reset signal output.
20
/CS
LCD Driver Chip-select signal output.
62

TERMINAL FUNCTION

Function
Pin No.
Name
J901 (MIC jack)
1
DM
MIC data detection.
2
HOOK/RXD HOOK:Hook detection, RXD:Serial data input.
3
MIC
MIC signal input.
4
ME
MIC ground.
5
PTT/TXD
PTT:PTT input, TXD:Serial data output.
6
E
Ground.
7
SB
Power output of switched power supply.
DC13.6V± 15%, 200mA typ.
8
BLC
MIC key backlight control.
TX-RX unit (X57-7390-10) (A/2)
Pin No.
Name
CN595 (to Option board)
1
OPT1
2
OPT3
3
26P_RD
4
26P_TD
5
NC
6
OPT4
7
OPT10
8
OPT5
9
DGND
10
AGND
11
AI
12
AO
13
AGND
Refer to
14
5V
"CN595 26-pin connector specification".
15
OPT9
16
DTI
17
OPT8
18
OPT11
19
OPT7
20
OPT2
21
TXO
22
RXEO
23
RXEI
24
TXI
25
OPT6
26
POW
CN597 (to Display Unit CN901)
1,2
GND
Ground
3
RXD
Serial data signal input
4
TXD
Serial data signal output
5
NC
Non-connection
6
50C
5V output.
Function
Description

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