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General Procedures and Information 5-22 Xerox DocuPrint P8e Service Manual
The “00” readout is the Diagnostic Code for testing the main motor. The UP and SHIFT + DOWN keys
are used to scroll the Diagnostic Code list up and down in the readout window to select other diagnostic
tests.
5.4.3 General Test Procedures
As you read each of the paragraphs in this section, refer to the Diagnostic Test Table (Table 5.4.5b). This
will enable you to understand the similarities and differences among the thirteen test procedures. It will
also familiarize you with the use of the table as a guide while performing test procedures.
All thirteen main Diagnostic tests are started in the same way. After the Diagnostic test code has been
selected (see Column 1 in the table), the test is started by pressing the ENTER key (see Column 3).
Except for two, all the diagnostic tests are ended in the same way (see Column 6). After the test
procedure has been completed, the test is ended by pressing SHIFT + STOP. The exceptions are tests
11 and 12, which are ended by switching off the printer.
What happens between starting and stopping a test varies according to the type of test.
The four voltage tests (01-04) require use of a multimeter and probes. Test results are determined from
the multimeter readings (Column 3). Figure 5.4.5a illustrates the locations of the high voltage test points
and Table 5.4.5a indicates the voltage for each.
Table 5.4.5a High Voltage Readings. Figure 5.4.5a High Voltage Test points.
All readings are Volts DC, +/- 5%
DCU Test Test Point Voltage
Reading on
High Voltage
PS
01 Charge -1400
02 Metal end of
BTR Roller
-220 to
-550
03 Metal end of
BTR Roller
600 to 2800
04
Bias Medium
Bias Dark
Bias Medium
Bias Dark
Bias
Bias
Supply
Supply
-300
-350
-500
-500
13
Transfer Trigger
Transfer Duty
Transfer
Transfer
495
673
14
Transfer Duty Transfer 673
Charge
Transfer
Bias
Supply
sm5_020
CN2
CN4
CN3
CN1
SUPPLY
DEV
MHV
THV
HVPS PWB
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