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General Procedures/Information
5-54
Xerox DocuPrint N17 Service Manual
5.2.1.24 HVPS (Detack Saw) Operation
This diagnostic tests HVPS AC voltage to the Detack Saw.
WARNING! This test switches on the HVPS. Never touch the parts supplied with a high voltage
from the HVPS when running the following diagnostics. The HVPS output voltages
switched on by these procedures can be measured by means of a multimeter. Be
sure to observe the following procedures to check the voltages.
1 Enter Diagnostics Mode 1.
The LCD displays PRINT COUNTER OPERATION indicating the
printer is in Diagnostics Mode 1.
2 Press the MENU UP (1) or MENU DOWN (5) key until the LCD displays HVPS DETACK SAW
OPERATION
message.
3 Remove the EP Cartridge from the printer.
4 Bypass the Front Cover interlock switch and the EP Cartridge interlock switch with an Interlock
Bypass key or equivalent.
5 Set the multimeter to read a momentary voltage (approximately one second in duration), in the
750 VAC range.
6 Connect the multimeter to the following terminals:
• Positive test probe directly probing the Detack Saw
• Negative test probe to the LVPS frame or the printer frame.
7 Press the ENTER key to execute the test. The LCD displays the HVPS (DETACK SAW)
message.
NOTE: Voltage is present for approximately one second each time the ENTER key is pressed.
8 The normal momentary HVPS Detack Saw output voltage is approximately 430 VAC.
9 If you wish to exit this test and enter another test use the MENU UP (1) or MENU DOWN (5) key
to scroll to another test.
10 To exit this test and return to normal operation, switch OFF the printer power then switch it ON.
HVPS (DETACK SAW)
Operation EXECED
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