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4. MAINTENANCE, TROUBLESHOOTING<br />
4-4<br />
OK shown for normal;<br />
NG (No Good) shown for error<br />
GPS receiver<br />
Processor unit<br />
Display unit<br />
ROM, RAM, KEY TEST<br />
OUTPUT TEST<br />
DISPLAY TEST<br />
PROGRAM VERSION<br />
DISPLAY<br />
ROM RAM<br />
GPS1 OK OK PUSH KEY<br />
GPS2 OK OK<br />
GPS3 OK OK<br />
CAL OK OK OK<br />
DISP OK OK<br />
CNT= (STOP: PWR OFF)<br />
Number of times test executed<br />
AD-10 IEC<br />
OUT1 OK OK<br />
OUT2 OK OK<br />
OUT3 OK OK<br />
OUT4 OK OK<br />
OUT5 OK OK<br />
OUT6<br />
B-EXT OK<br />
DISP OK<br />
After 3 sec.<br />
After 3 sec.<br />
All LCD segments go on 2 sec.,<br />
All LCD segments go off 3 sec.<br />
<br />
ALL ON 2 SEC.<br />
ALL OFF 3 SEC.<br />
SOFTWARE VERSION<br />
DISPLAY 205-1341-**.**<br />
PROCESS 205-1342-**.**<br />
GPS1 4850263-*.**<br />
GPS2 4850263-*.**<br />
GPS3 4850263-*.**<br />
CNT= (STOP: PWR OFF)<br />
Diagnostic test sequence<br />
ROM, RAM, KEY check appears after<br />
3 sec.<br />
6. Turn off the processor unit to quit the diagnostic test1.<br />
KEY TEST<br />
Press each key one by<br />
one. Pressed key’s name<br />
appears here if key<br />
is functioning properly.<br />
To stop the test turn<br />
off the power.<br />
** Program<br />
Version No.
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