Rap 42 Toner Sensor Assembly; Rap 43 Hvps Assembly - Xerox DocuPrint N2025 Service Manual

RAP 42 Toner Sensor Assembly

Procedure
Switch the printer power off. Remove the Left Side Cover (REP 1.1) and the Print Engine Con-
troller PWB Cover (REP 8.5). Open the Top Cover and remove the Print Cartridge. Cheat the
Top Cover Interlock. Disconnect P/J14 from the Print Engine Controller PWB. Measure the volt-
age between P14 pin 1 on the Print Engine Controller PWB and frame ground. The voltage is
+24.0VDC.
Y N
Measure the voltage between P/J16 pin 9 on the Print Engine Controller PWB and frame
ground. The voltage is +24.0VDC.
Y N
Replace the LVPS (REP 8.6).
Replace the Print Engine Controller PWB (REP 8.5).
Measure the voltage between P14 pin 3 and frame ground. The voltage is +5.0VDC.
Y N
Replace the Print Engine Controller PWB (REP 8.5).
Switch the printer power off. Reconnect P/J14. Switch the printer power on. Raise and lower
the Print Cartridge approximately 2 inches (50.8mm) while measuring the voltage between P/
J14 pin 3 and frame ground. The voltage is 5.0VDC when the cartridge is in place and
0.0VDC when the cartridge is raised.
Y N
Check the continuity between P/J14 and P/J141. There is continuity between all the
pins tested.
Y N
Repair or replace the Toner Sensor Harness (PL 8.1).
Replace the Toner Sensor Assembly (REP 7.3).
Problem Solved.
Status Indicator Repair Analysis Procedures
RAP 42, RAP 43

RAP 43 HVPS Assembly

Procedure
Open the Top Cover. Remove the Print Cartridge. Inspect all contacts on the Right Print Car-
tridge Guide Assembly and the terminals on the Print Cartridge. The terminals are in good
condition and contacting properly when the cartridge is installed.
Y N
Replace the Right Print Cartridge Guide Assembly (REP 7.2) or the Print Cartridge (PL
8.1) as necessary.
Inspect the Seal Guide on the rear end of the Right Print Cartridge Guide Assembly. The Seal
Guide is intact, free of contamination, deformation or damage.
Y N
Replace the Right Print Cartridge Guide Assembly (REP 7.2).
Enter Diagnostics and select Component Test. Scroll to Charge Roll AC. Insert a cheater into
the Top Cover Interlock Switch. Press Enter [4]. Measure the voltage between the Right Side
Guide Charge Terminal (connector nearest the front of the machine) and frame ground, press
Enter. The reading is 1150 VAC.
Y N
Scroll to "Dev Bias AC". Measure the voltage between the Right Side Guide Developer
Bias Terminal (connector nearest the back of the machine) and frame ground, press
Enter. The voltage reading is 620 VAC.
Y N
Scroll to "BTR-". Place the probe on the left end of the BTR shaft. Press Enter. The
voltage reading is 915 VDC.
Y N
Switch the printer power OFF. Remove the Lower Rear Cover (REP 1.7),
Duplex Assembly (REP 9.1) if installed, and the HVPS Cover (REP 1.6). Switch
the machine power on. Check the voltage between P/J181 pin 10 and frame
ground. The voltage is +24 VDC.
Y N
Switch the printer power off. Remove the Left Side Cover (REP 1.1) and
the Print Engine Controller PWB Cover (REP 8.5). Switch the printer
power on. Check the voltage between P/J18 pin 1 on the Print Engine
Controller PWB and frame ground. The voltage is +24 VDC.
Y N
Check the voltage between P/J16 pin 9 on the Print Engine Controller
PWB and frame ground. The voltage is +24 VDC.
Y N
Replace the LVPS (REP 8.6).
Replace the Print Engine Controller PWB (REP 8.5).
Check the wires for continuity between P/J181 and P/J18. Repair or
replace the harness as necessary.
Replace the HVPS (REP 8.2).
Replace the HVPS (REP 8.2).
A B
02/2000
2-42
Initial Issue
DocuPrint N2025/N2825