Mailing Machine Transport Faults - Pitney Bowes DM300c Service Manual

4.2 Troubleshooting Tables
Table 4-4 Mailing Machine Transport Faults
Fault Checkpoints
Operator Error. Operator may be feeding piece improperly.
Interlocks. Are all covers and transports closed?
Fails to feed PS1.
when operator
inserts envelope.
Segmented (separator) roller.
Encoder sensor, encoder problem. The system
initializes normally, however an envelope feeds
partially, no print, and system locks.
Transport fails to Transport drive motor and drive components.
drive, PS1 okay. See picture below.
Drive belts damaged or improperly tensioned.
Segmented
Roller
Lower Transport
Idlers
Figure 4-1 Transport Drive
DM300c/DM400c/DM475 Service Manual (SV61801 Rev. D)
4 • Troubleshooting/Diagnostics
Transport Drive Transport
Belt Drive Motor
Possible Causes/Solutions
Instruct operator to position envelope top edge
against rear wall and slide it to right.
An error message should display if a cover is
open.
Dirty or defective sensor. Check sensor using
service diagnostics. If PS1, PS2 and PS3 all
fail service diagnostics tests, there may be a
problem with sensor junction board or harness
to J122. PS2 will always show as Clear on the
6C00 even though it does not have a PS2 sen-
sor on the board.
Check roller for wear or glazing.
Encoder disc, encoder sensor, wiring to J122
on Main Logic Board, poor connection at J122.
Test using service diagnostics. Also check har-
ness and connection at J115.
Check drive belts and tensioners.
Transport
Drive Belts and
Tensioners
Pulley
Bearing
Drive Shaft
Pulley
4-5