Pitney Bowes DA50S Service Manual page 36

4 • Troubleshooting/Diagnostics
4.3
Troubleshooting
Tables
4-10
Table 4-4 Print Quality Problems
Symptom Possible Cause
Envelope thickness ad-
Ink Print Qual-
justment incorrect
ity not Sharp
Material out of spec
Contaminated mainte-
nance station
Envelope thickness ad-
Ink streaking
justment incorrect
on Media
Exit idler rollers dirty
Print head needs purging
The print cartridge is dirty Clean the cartridge
Print Head Holder broken Check the print head holder for
Non-Uniform
Print
Quality
Print head holder
Multiple print nozzles not
working
Print Head
SV61831 Rev. A DA50S/DA55S/DA70S/DA75S AddressRight™ Printers Service Manual
Solution
Adjust lever to lower print head
Change to typical white wove bonded
Clean the caps and wipe with damp
cloth or paper towel
Adjust lever to raise print head
Clean rollers with water to remove ink
Run "Purge Print Head" from Setup
Menu
broken pins. Replace print head
drive board if pins are broken. NOTE:
When trying to decide if print head
driver board should be replace or
not, run "Test Print Head" from Setup
Menu, replace the ink cartridge with
a new one, then run the print head
test again. If the gaps are consistent
with different ink cartridge, then the
print head driver board needs to be
replaced (when there is no physical
sign that the print head driver board
is damaged).
Check that flex circuit dimples are not
crushed
Run "Purge Print Head" from Setup
Menu, then run "Test Print Head". If
not helpful, swap ink cartridge with
known good one. If the same nozzles
are out, check the ribbon cable going
to print head cartridge (it may have
lost power to nozzles). If cable is fine,
check print head board.
If gap appears in test pattern, replace
print head.