400 SERIES MAINTENANCE MANUAL
Page B-5
P/N 190-00140-05
Rev. C
B.3.3 J9
Table B-5. J9 Descriptions
Pin Name
Pin #
I/O
Description
12V
1
O
12 volt Supply to NAV board and G/S board from Main CPU board.
5V_NAV
2
O
+5 volt Supply to NAV board and G/S board from Main CPU board.
GND
3
O
Ground.
-12V
4
O
-12 volt Supply to NAV board and G/S board from Main CPU board.
VLOC_SERIAL_IN
5
O
Serial output used to communicate with the processor on the NAV
board.
KEY
6
-
G/S_SERIAL_IN
7
O
Serial output used to communicate with the processor on the G/S
board.
G/S_SERIAL_OUT
8
I
Serial input used to communicate with the processor on G/S board.
NAV_VOL_CONTROL
9
O
This is a dc output that is connected to the center tap of a pot. See
J14-41 (POT_BOT_WPR).
VLOC_SERIAL_OUT
10
I
Serial input used to communicate with the processor on NAV board.
B.3.4 J11
Table B-6. J11 Descriptions
Pin Name
Pin #
I/O
Description
12V_COM
1
O
12 volt Supply to COM board from Main CPU board.
-12V_COM
2
O
-12 volt Supply to COM board from Main CPU board.
5V_COM
3
O
+5 volt Supply to COM board from Main CPU board.
COM_SERIAL_IN
4
O
Serial output used to communicate with the COM board.
COM_SERIAL_OUT
5
I
Serial input used to communicate with the COM board.
COM_VOL_CONTROL
6
O
This is a dc output that is connected to the center tap of the
volume pot. See J14-70 (POT_TOP_WPR).
Not used.
7
Not used.
8
GND
9
O
Ground.
GND
10
O
Ground.
