Error Message:

DRUM: Drive direction incorrect - check motor wiring

Applies to:

• All

Service Information:

Only occurs during drum initialization. Drum direction as detected from the encoder is incorrect. Most likely cause is the cable from the back plane to the drum amp. Remove plates and clamps, then enter command "Drum torque 5", not one of the pair of green direction leds should be on. Now enter "drum torque -5" check that the other green direction led is on. If it is this proves that the drive signal to the drum amp is reaching the drum amp.

Direction signal origionates on the MPE.

Replace drum amp.

Check encoder alignment using scope and procedure 73-0106A

Operator Action:

Resume, cycle the power, call Creo Response Center.

Cause:

• During drum init the drum velocity as read from the encoder was <0

See Also: