Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
6-62
6.3.12 CRU Switch S100 failure Continued
4. CRU SENSOR PWB ANALYSIS
Disconnect the AC power plug from the back of the printer.
Remove the Toner Cartridge.
Is there continuity (0Ω) between P/J 15-10 and P/J15-11 on the MCU PWB?
Reinstall the Toner Cartridge.
Is there 1K
Ω Ω
between P/J15-10 and P/J15-11 on the MCU PWB?
Yes No
Go to Step 5. Replace the CRU Sensor PWB
5. CRU SENSOR PWB ANALYSIS
With the Toner Cartridge installed, is there 0VDC between P/J15–10 and P/J 15–11 on the
MCU PWB?
Remove the Toner Cartridge.
Is there +5VDC between P/J15–10 and P/J 15–11 on the MCU PWB?
Yes No
Replace the MCU PWB. Go to Step 6.
6. HARNESS ASSEMBLY HVPS ANALYSIS
Disconnect P/J15 on the MCU PWB and P/J118 on the CRU Sensor PWB.
Is there continuity (0
Ω) Ω)
between all wires on J15 and J118?
Yes No
Go to 3.1 LVPS Assembly Failure (+5VDC). Replace the Harness Assembly HVPS.