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S.
Problem
No.
No light in
1.
display
Read value
2.
shows
"OVLD"
Fan not
3.
working
Display shows
4.
"EEPROM
error"
NAG/IM/Metcal 1200/01/22
Possible Cause
Power not
available to
the Unit.
Power switch
not ON
Fuse Open.
Over load
Sensor Open.
No Supply to
Fan
Fan defect
IC Problem
Solution
Check the power
supply to the Unit.
Ensure the power
switch ON.
Ensure 5V to the
display.
Check the fuse, if
defective, replace
the fuse of same
rating.
Check (-15V DC) in
power board
Contact Customer
Service.
Check the fan power
supply voltage.
Replace the fan
Contact Customer
Service.
29
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