Using The Troubleshooting Procedures - Xerox 6200B - Phaser Color Laser Printer Service Manual

Using the Troubleshooting Procedures

1. Each Step in a Troubleshooting Procedure instructs you to perform a certain action
or procedure. The steps are to be followed sequentially in the order given until the
problem is fixed or resolved.
2. The Actions and Questions box contains additional information and/or additional
procedures you must follow to isolate the problem.
3. When a procedure instructs you to test a component using service diagnostics, See
"Service Diagnostics" on page 23 for the detailed steps and functions for testing
parts of the printer.
4.
The action is followed by a question. If your response to the question is "Yes",
then follow the instructions for a "Yes" reply. If your response to the question is
"No", then follow the instructions for a "No" reply.
5. Troubleshooting Procedures may ask you to take voltage readings or test for
continuity at certain test points within the printer. For detailed diagrams, refer to
the section "Plug/Jack Locator Maps" on page 341 and "Wiring Diagrams" on
page 351 for complete information on test point locations and signal names.
6. Troubleshooting Procedures often ask you to replace a printer component. The
section "FRU Disassembly - Removal and Replacement Procedures" on page 119
provides detailed steps for removing and replacing all major parts of the printer.
The section "FRU Parts List" on page 253 details the location, quantity and part
number for all spared parts of the printer.
General Notes on Troubleshooting
1. Unless indicated otherwise, the instruction "switch ON printer main power" means
for you to switch ON printer power and let the printer proceed through POST to a
'Ready' condition.
2.
Conventions used to represent connectors
Plug
3.
When instructed to take voltage, continuity or resistance readings on wiring
harness, proceed as follows; Check P/J 232–1 to P/J 210–5 by placing the red
probe (+) of your meter on pin 1 of P/J 232, and place the black probe (–) of your
meter on pin 5 of P/J 210.
4.
When you are instructed to take resistance readings between "P/J 232 <=> P/J
210" (without specified pin numbers), check all pins. Refer to the the section
"Wiring Diagrams" on page 351 for the location of all wiring harnesses and pins.
5. When you are instructed to take a voltage reading, the black probe (–) is generally
connected to a pin that is either RTN (Return) or SG (Signal Ground). You can
substitute any RTN pin or test point in the printer, and you can use FG (frame
ground) in place of any SG pin or test point.
6. Before measuring voltages make sure the printer is switched ON, the Imaging Unit
and the paper trays are in place, and the interlock switches are actuated, unless a
troubleshooting procedure instructs otherwise.
Error Messages and Codes
Jack
S6200-282
21