DCA Vantage Operator’s Guide 131
Troubleshooting
E21
Lamp Failure
An Air reading for the
Sample or Reference
channel is too low.
Possible causes:
• incorrect position of
cartridge holder
• lamp failure
• lamp drive circuit
1. Discard the sample.
2. Power off the system.
3. Clean the cartridge area. Refer
to Removing and Cleaning the
Cartridge Spring and Cartridge
Area‚ page 98.
4. Restart the system.
E22
Optical reading
is out of range
A Sample or Reference
channel reading taken
during an Air
measurement is too
high.
Possible causes:
• failure of lamp drive
circuit
• optical system
1. Discard the sample.
2. Power off the system.
3. Clean the cartridge area. Refer
to Removing and Cleaning the
Cartridge Spring and Cartridge
Area‚ page 98.
4. Restart the system.
E23
Excessive
noise on the
Sample
channel
The standard deviation
of the 16 readings at the
Sample channel for Dark
or Air reading is too
large.
Possible causes:
• low lamp intensity
• lamp alignment/
rotation
• lamp intensity
variation
1. Discard the sample.
2. Power off the system.
3. Clean the cartridge area. Refer
to Removing and Cleaning the
Cartridge Spring and Cartridge
Area‚ page 98.
4. Check/replace the air filter.
5. Clean the cartridge holder with
compressed air while rotating.
6. Restart the system.
7. Run an optical test.
E24
Excessive
noise on the
Reference
channel
The standard deviation
of the 16 readings at the
Reference channel for
Dark, Air, or Sample
reading is too large.
Possible causes:
• low lamp intensity
• lamp alignment/
rotation
• lamp intensity
variation
1. Discard the sample.
2. Power off the system.
3. Clean the cartridge area. Refer
to Removing and Cleaning the
Cartridge Spring and Cartridge
Area‚ page 98.
4. Check/replace the air filter.
5. Clean the cartridge holder with
compressed air while rotating.
6. Restart the system.
7. Run an optical test.
Error Code Description Corrective Action
To Next Page
Loading...
