Furuno Sc 50 manual Diagnostic test sequence, ROM, RAM, KEY Test

3. MAINTENANCE, TROUBLESHOOTING

ROM, RAM, KEY TEST

OK shown for normal;

NG (No Good) shown for error

GPS receiver

Processor unit

Display unit

OUTPUT TEST (for serviceman)

(For serviceman)

DISPLAY TEST

PROGRAM NUMBER DISPLAY

	ROM	RAM
GPS1	OK	OK	PUSH KEY
GPS2	OK	OK		KEY TEST
GPS3	OK	OK		Press each key one by
CAL	OK	OK	OK	one. Pressed key’s name
DISP	OK	OK		appears here if key
				is functioning properly.
CNT= (STOP: PWR OFF)
Number of
times test
executed
		After 3 sec.
	AD-10	IEC
OUT1	- -	- -		To stop the test turn
				off the power.
OUT2	- -	- -
OUT3	- -	- -
OUT4	- -	- -
OUT5	- -	- -
OUT6	- -
		After 5 sec.
B-EXT - -
DISP	OK

All LCD segments go on 2 sec.,

All LCD segments go off 3 sec.

<LCD CHECK>

ALL ON 2 SEC.

ALL OFF 3 SEC.

SOFTWARE VERSION
DISPLAY	205-1342-**.**	** Program
PROCESS	205-1341-**.**	Version No.
GPS1	4850263***
GPS2	4850263***
GPS3	4850263***

CNT= (STOP: PWR OFF)

ROM, RAM, KEY check appears after 3 sec.

Diagnostic test sequence

6. Turn off the processor unit to quit the diagnostic test1.

3-4