Xerox 5400N - Phaser B/W Laser Printer, Service Quick Reference Manual

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158 Phaser 5400 Laser Printer Service Guide
7 PAPER TRANSPORT ASSEMBLY
1. Remove the Paper Transport Assembly [RRP 4.1,
page 283 ].
2. Check all the wires in the Paper Transport Assembly
for continuity.
Do all the wires check OK for continuity?
Go to
Step 8. Replace the
Paper
Transport
Assembly
[RRP 4.1,
page 283 ].
8 DEVELOPER WIRE ASSEMBLY
Inspect the Developer Wire Assembly.
Are all the wires connected properly?
Go to
Step 9. Secure /
connect the
wires
properly.
9 FUSER ASSEMBLY
Inspect the cables of P174-1 and P174-4 and the right
end of the Heat Rod.
Are the cables attached properly?
Go to
Step 10. Secure /
connect the
cables
properly or
replace the
Fuser
Assembly
[RRP 5.1,
page 288 ].
10 “YES” FROM STEP 9 ABOVE
1. Disconnect the HVPS (P/J18) from the Print Engine
Controller Board [RRP 8.5, page 310 ].
2. Print a continuous test run of approximately twenty
sheets.
Does the printer complete the test run without
shutting down?
Replace the
HVPS Board
Assembly
[RRP 8.2,
page 307 ].
Go to
Step 11.
11 PRINT ENGINE CONTROLLER BOARD
REPLACEMENT
Replace the Print Engine Controller Board [RRP 8.5,
page 310 ].
Is the problem still present?
Go to
Step 12. Problem
solved.
12 GROUND CONNECTIONS
Inspect all of the grounds in the printer.
Are all the grounds securely connected?
Go to
Step 13. Repair all
poor ground
connections.
13 ASSEMBLY REPLACEMENT
Replace the following components, one at a time, until
the cause of the problems is found.
■
HVPS Board Assembly [RRP 8.2, page 307 ]
■
Right Print Cartridge Guide Assembly [RRP 7.2,
page 299 ]
■
Print Engine Controller Board [RRP 8.5, page 310 ]
■
Inlet Assembly [PL 9.2]
■
Print Cartridge [PL 8.1, page 402 ]
■
Fuser Assembly [RRP 5.1, page 288 ]
■
Paper Transport Assembly [RRP 4.1, page 283 ]
■
Harness Assembly, HVPS [PL 9.2]
Does the problem disappear after replacing one
of the above assemblies?
Problem
solved. Review
Step 13. If
problem
persists, call
Technical
Support.
Table 90 Electrical Noise Troubleshooting Procedure (cont'd.)
Step Actions and Questions Yes No