Diagnostic Information 2-13
4098-001
Paper Path Service Check
Examine the printer for the following beforeyou begin this service
check:
•Check the entire paper path for obstructions.
•Be sure the paper guide is not worn/ broken and positioned
against the paper without binding.
•Be sure the correct type of paper is being used.
•Be sure the printer is installed on a flat surface.
Go to the“Paper Feed Service Check” on page 2-11
Power Service Check
6 Large and Small
Feed Rollers Check the rollers for wear and binds
7End-of-Forms
Flag / Spring
System board
Check the end-of-forms flag for binds.
Perfor m the “End of Forms (EOF) Test” on
page 3-3. If the test fails, replace the system
board.
FRU Action
1 External Power
Supply Plug the external power supply into an outlet.
Check for +30 V dc at the connector.If voltage is
incorrect, replace the external power supply.
2 Connector Board
All Cables
Operator Panel
Encoder Card
System Board
Isolate for a shorted component by disconnecting
the component from the printer and plugging in the
power supply to see if there is a symptom change.
Check the TestPad readings on the system board.
If the +30 V dc is missing, check to make sure the
system board cableis fully seated in the connector
board and system board. Check the system board
cable for continuity.
If the +5 V or +3.8 V and +30 V is present, replace
the system.
FRU Action