General Test Procedures - Xerox DocuPrint P1202 Service Manual

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.
All readings are Volts DC, +/- 5%
DCU Test Test Point
01 Charge
02 Metal end of
BTR Roller
03 Metal end of
BTR Roller
04
Bias Medium Bias
Bias Medium Supply
Xerox DocuPrint P1202 Service Manual
Voltage Reading with PCU Version:
4.4.5, 5.3.1
4.4.6, 5.3.0
-1500 -1500
-1100 to -1100 to -1100 to
-1300 -1300
1000 to 1100 to 1000 to
4000 4000
Nominal Nominal Nominal
2000 2000
-430 -430
--630 -630
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Figure 5.4.5a
Bias
5.3.2
Supply
-1500
-1300
4000
2000
-430
-630
3/99
5-25 General Procedures and Information
High Voltage Test points.
Charge
BTR Roll
dp8_067