Service manual

4 • Troubleshooting/Diagnostics
DM300c/DM400c/DM475 Service Manual (SV61801 Rev. D)
4-13
4.2 Troubleshooting Tables
Problem Possible Cause Solution
Envelopes don’t
seal.
Incorrect feeding. Check that operator is sliding envelope flap under blue
edge of feed deck. If this is not done, moistener can’t wet
flap.
Low sealant level. Check sight glass on left side of moistener tank. If level is
low, add E-Z Seal® until it reaches bottom of fill hole.
Dry moistener brush. Try wetting moistener brush. If brush drys out quickly, re-
place moistener wick.
Dirty moistener brush. Remove brush, clean in plain water and rinse thoroughly.
Worn moistener brush. Replace moistener brush.
Problems Checkpoints Possible Cause/Solutions
AM or PM is
wrong.
Drift. If close to noon or midnight, go to Correct Drift
and attempt to cross over to Am or PM.
Lock Code
Customer forgot
meter lock code.
Go to Enter Lock code screen. Type in
6946-Refill. This will take you to the service
mode. Press Clear. This takes you to the main
menu. Lock Code will override Supervisor
Code.
“ Ink Tank Access
Cover Open”.
Access cover. Close access cover. If this doesn’t correct
problem, check sensor flag. Sensor must be
blocked when cover is closed. If flag is okay
,
check wiring and connection at Main Logic
Board, J121.
System is noisy.
Lubrication may be required. Use Tefl on/silicone grease on feeder gear
shafts if there is noise. Also use on white
tension idler rollers if they make a high
squealing noise.
Meter Hangs.
Laser printer has lost its enumeration.
Table 4-8 Moistener Faults
Table 4-9 Miscellaneous Faults