Xerox DOCUPRINT N17 Service Manual page 320

6 Ensure there is a ground contact from the EP Cartridge to the Chassis Ground (through the drum
shaft). Measure continuity from the printer chassis to the drum shaft contact on the EP Cartridge
when installed.
Y: Go to step 7.
N: Clean the drum shaft ground contact or replace the EP Cartridge.
7 There is ground contact to the Exit Motor when the Top Cover is mounted through the spring
contact attached to the printer chassis.
Y: Go to step 8.
N: Remove the obstruction or reform the spring contact.
8 Check to make sure there is a spring ground contact from the Eliminator Assembly to chassis
ground when the Top Cover is mounted.
Y: Go to step 9.
N: Remove the obstruction or reform the spring contact.
9 Check for high voltage arcing at the Detack Saw. Visually inspect the Detack Saw and listen for a
buzzing or arcing sound while performing Diagnostic Mode 1, HVPS (Detack Saw). There is
arcing present.
Y: Check for foreign material or toner contamination of the Detack Saw. Clean or replace
the Transport Chute Assembly.
N: Go to step 10.
10 Replace the following components in the following order and retest after installation of each new
component:
a. Exit Drive Motor
b. Main Drive Motor
c. High Voltage Power Supply (HVPS)
d. Low Voltage Power Supply (LVPS)
e. Print Engine Controller
f. System Controller
g. Laser Assembly
The electrical noise is eliminated.
Y: Go to Final Actions.
N: Go to Step 11.
11 There is continuity between the Heat Roll and the Nip Lever L.
NOTE: Remove the Fuser Top Cover Assembly and the Left Fuser Cover to perform this.
Y: Go to step 12.
N: Secure continuity.
12 There is continuity between the Earth Plate and the Wire Assembly.
Y: Go to step 13.
N: Secure continuity.
Repair Analysis Procedures (RAPs)
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