Furuno SC-120 manual MAINTENANCE, Troubleshooting, Diagnostic test sequence

4. MAINTENANCE, TROUBLESHOOTING

5.Press ◄ to choose YES and press the [ENT] key. The test proceeds in the sequence shown below.

OK shown for normal;

NG (No Good) shown for error

GPS receiver

Processor unit Display unit Internal beacon receiver

ROM, RAM, KEY TEST

HDG OUT1 connector HDG OUT4 connector NAV OUT1connector NAV OUT2 connector BEACON EXT connector DISPLAY connector

I/O TEST

DISPLAY TEST

PROGRAM VERSION DISPLAY

	ROM	RAM	BAT
GPS1	OK	OK	PUSH KEY
GPS2	OK	OK
GPS3	OK	OK
CAL	OK	OK	OK
DISP	OK	OK	OK
DGPS	OK	OK
CNT=	(STOP: PWR OFF)

Number of times test executed

After 3 sec.

HDG - -

HDG4 - -

NAV1 - - Factory use

NAV2 - -

B-EXT - -

DSP OK

CNT= (STOP: PWR OFF)

After 3 sec.

<LCD CHECK>

ALL ON 2 SEC.

ALL OFF 3 SEC.

All LCD segments go on 2 sec.,

All LCD segments go off 3 sec.

SOFTWARE VERSION

DISPLAY 205-1312-0**

PROCESS 205-1131-0**

GPS1 205-1313-0**

GPS2 205-1313-0**

GPS3 205-1313-0**

DGPS 085-0182-0**

CNT=*** (STOP: PWR OFF)

ROM, RAM, KEY check appears after 3 sec.

KEY TEST

Press each key one by one. Pressed key’s name appears here if key

is functioning properly.

To stop the test turn off the power.

**= Program version no.

***= No. of times test conducted consecutively.

Diagnostic test sequence

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

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