Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
6-84
6.3.22 Noise Continued
11. EARTH PLATE ASSEMBLY ANALYSIS
Unplug the AC power cord from the back of the printer.
Remove the Toner Cartridge.
Is there continuity (0
ΩΩ
) between CR on the Earth Plate and P/J CR on the HVPS?
Is there continuity between DB on the Earth Plate and P/J DB on the HVPS?
Yes No
Go to Step 12. Replace the Earth Plate Assembly.
12. TONER CARTRIDGE ANALYSIS
Install a new Toner Cartridge.
Use Diagnostic Tool tests DG91, DG92, DG93, DG94, and DG95 to check the Toner Cartridge.
Is the noise still present?
Yes No
Inspect the Toner Cartridge and Earth Plate
Assembly contact point.
Replace the Toner Cartridge.
13. WIRE ASSEMBLY TR ANALYSIS
Remove the Transportation Chute Assembly.
Is there continuity (0
Ω) Ω)
between TR-T (the red wire under the Transportation Chute
Assembly) and TR on the HVPS?
Yes No
Go to Step 14. Replace the Wire Assembly TR.
14. TRANSPORTATION CHUTE ASSEMBLY ANALYSIS
Press the BTR shaft against the Transportation Chute.
Is there (0
Ω) Ω)
between TR-T and the BTR shaft?
Yes No
Replace the BTR Assembly. Replace the Transportation Chute Assembly.
15. Inspect the machine ground path.
Try the initial analysis again.