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