Error Message:

ALE: Drum vacuum level too low, threshold = <n>, current level = <n> (index word)

Applies to:

• Trendsetter_400/800_Proofing

Operator Action:

This error is likely due to the media not being loaded properly. Select RESUME from the workstaion dialog box. If that doesn't correct the problem, select CANCEL IMAGE from the workstation dialog box. You may need to open the proofer and remove the media if it isn't ejected from the proofer on it's own. IF CANCEL IMAGE is not available, select CLEAR and make sure that you remove all media other than the carrier in the machine. If this problem recurs frequently contact Creo service.

Service Information:

When the problem happens, determine if the media is loaded correctly. If it is not, then you must watch a few load/unload cycles with the doors open and try to determine what is going wrong. If the media is being loaded correctly, then the vacuum sensors are not working properly, the vacuum thresholds are mis-adjusted or the vacuum is not being generated properly. You can check the vacuum sensor readings using the "proof" command. Additionally, at the end of the error message, an index word is printed to help determine which threshold in NVS is being used when error occurs.

• (load_3a) : dvrt
• (load_3b) : dvct
• (load_6a) : dvrt + ((dvdt - dvrt) / 3)
• (load_6b) : dvct + ((dvrt - dvct) / 3)
• (load_9a) : dvdt
• (load_9b) : dvrt
• (load_11a) : dvdt
• (load_11b) : dvrt
• (load_12a) : dvrt
• (load_12b) : dvdt
• (unload_0a) : dvdt
• (unload_0b) : dvrt
• (unload_10a) : dvrt
• (unload_10b) : dvct

Please make sure that the error is NOT due to mechanical alignment before adjusting NVS thresholds.

Service Information:

The sensors can be over-ridden using the "alproof vsi" parameter. This will allow the machine to operate, but in a much slower and more dangerous manner. In this state, the machine should only be used if absolutely necessary and if it will be fixed very soon. When the sensors are disabled, the machine is running "blind", so it could incur additional damage if used. Use extreme caution.

Cause:

• The machine checks vacuum on the drum after the media is loaded. This error occurs because the drum vacuum level is too low. This is probably due to the media being loaded incorrectly. It is also possible that the drum vacuum sensor is not working properly, the thresholds are not set properly, or vacuum is not being generated properly.

See Also:

• Command: proof
• Command: pload
• Command: punload
• NVS: alproof vsi
• NVS: alproof rvgt
• NVS: proof dvct
• NVS: proof dvrt
• NVS: proof dvdt