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Repair Analysis Procedures (RAP)
7-2
Xerox DocuPrint P1202 Service Manual
RAP 7.1 Using RAPs
In each of the following repair analysis procedures you are instructed to perform certain actions and
make observations. The instruction is followed by a statement. If your response to the statement is yes,
perform the action following the “Y”. If your response to the question is no, perform the action following
the “N.”
In addition, keep the following points in mind while performing any RAP:
1 RAPs use the following notation when referring to printer connections:
•
P/J XX – indicates Plug/Jack XX is connected to a component.
•
CN XX – indicates connector XX is connected to a component.
•
P XX – refers to the plug of P/J XX (except for connectors soldered directly to the board).
•
J XX – refers to the jack of P/J XX (except for connectors soldered directly to the board).
CAUTION!
Use an Electrostatic Discharge Kit (ESD) when handling sensitive electrical
components.
2 When you take a voltage reading at a P/J location, the notation “P/J3-5 and P/J 2-6” indicates
that you should place the red probe (+) of the voltmeter on pin 5 of P/J 3, and place the black
probe (-) of the voltmeter on pin 6 of P/J 2. In most cases the second P/J pin in the notation is a
Return (RTN), Frame Ground (FG), or Signal Ground (SG).
3 When a RAP tells you to take a voltage reading between P/J X and P/J Y, with no pin numbers
given, refer to the Wiring and Connection Diagrams in Section 6 and take readings on ALL pins.
4 Unless otherwise instructed by a RAP, take all voltage readings with the Print Cartridge/Front
Cover Interlock cheated, AC power applied, and the printer power switched on.
5 Voltage values stated in RAPs are approximate. Actual voltages you get may differ slightly. A
small difference in voltage is acceptable.
6 Refer to the appropriate Repair Procedures if you must remove, replace or reinstall a component.
7 The term
replace means the named part or parts could be the cause of the initial problem.
Example: the phrase “replace the Fuser Assembly” means to remove the current Fuser
Assembly and replace with a new Fuser Assembly.
Image Quality Problems
Use A4 or letter-size paper when troubleshooting an image quality problem. Use the local Test Print
Mode to determine whether an image quality problem is being caused by the printer or by the PC. If the
test prints are normal, but in the online mode the prints have a image quality problem, the problem may
be in the Controller PWB, Interface Cable, or with the Host Computer.
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