Call-Service Person Errors; A1: Uninstalled Waste Toner Conveyer - Mita DP-2800 Service Manual

Call-Service person errors

The printer does not operate when a message beginning with Call service person (A, B, C,
D, E, F) is displayed. The message is categorized by an alphanumeric code. Proceed with
this section for taking a corrective action depending on the code.
The Corrective action may be useful for on-site service. Follow the flowchart if one is
provided in that item for further analysis of the problem.

A1: Uninstalled waste toner conveyer

Meaning
The waste toner con-
veyer is not installed,
or the conveyer is
clogged inside with
waste toner.
Suggested causes
• Waste toner converyer is not
installed.
• The belt is not rotating in the
conveyer unit.
• Connection failure between the
CON1 board and the conveyer
board
• Engine gate arrays (U2/U6) failure
• Defective LED driving circuit on the
engine board. Defective LED on
the conveyer board. Connection
failure between the waste toner
conveyer board and the photo
transistor. Defective
transistor.
• Contaminated
conveyer housing or photo
receptor.
• The waste toner driving system in
the toner container is not working
properly.
Install a waste toner
conveyer or replace the
conveyer
Replace KP-544 or
KP-546. Check cable
S02070 for possible
disconnection. [If not
corrected, replace the
cable.]
photo
waste toner
5A2
Corrective action
and belt.
6-13