LABEC V-11D - Manual (Page 15)

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Troubleshooting
PROBLEM Possible Cause Solution
Power cord not connected to outlet Plug instrument in
Dead Power outlet Change to a different outlet
No functioning
after power is
on . Internal fuse melted or defective
electronic component
Change fuse or call an authorized
service engineer
Light beam blocked:
Holder misaligned
Check sample holder
Lamp is old or defective Replace lamp
Lamp is off alignment Readjust the lamp
Instrument
cannot set
100%T (0A)
Defective electronic component Call an authorized service
engineer
Insufficient warm up time warm up at least 20 minutes
Poor grounding Check ground connection
Excessive vibration, strong air
current near light source ,or strong
external light.
Improve working conditions
Lamp old or defective Replace with a new lamp
Unstable power supply equip a manostat to make the
voltage stable
unstable display
Defective or dirty detector or
defective electronic component
Call an authorized service
engineer
Insufficient sample volume Fill cuvette with more samples
Wrong wavelength setting
Failed to blank (0A/100%T)
Check analytical procedure and
wavelength setting.
Stray sample preparation vapors Prepare sample away from
instrument. Use proper
ventilation
Bubbles or particles in solution Check sample preparation and
analytical procedure
incorrect
readings
obtained
Instrument out of electronic
calibration
Call an authorized service
engineer