Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
6-29
6.2.15 Inoperative Printer
NOTES:
1. This FIP does not use the diagnostic tool.
2. There may or may not be a control panel message for this case
3. Many things could cause this problem.
4. DO NOT use the LCD functionality questions in this FIP. The LCD is controlled by the ESS
(controller) not the MCU as stated here. Understand symptoms and read this section and
determine simple tasks first. Try the engine self test. If that works, try to swap the ESS
(controller).
1. INITIAL ANALYSIS
Inspect the following components. Are they compatible with your printer version, correctly
installed, not damaged, deformed, or contaminated?
Feeder Assembly LVPS Assembly
HVPS Assembly MCU PWB
Fan Drive Assembly
Console Assembly Pick–Up Solenoid
ROS Assembly Toner Sensor Assembly
Optional Feeder Assembly
Inspect the printer paper path. Is it clear of foreign matter, such as staples, paper clips, and
paper scraps?
Yes No
Go to Step 2. Replace the problem components.
2. LVPS ASSEMBLY ANALYSIS
Disconnect P/J111 from the HVPS. Perform this test within 30 seconds after switching power on.
After 30 seconds, the LVPS shuts down with a no-load condition.
Switch ON Main Power.
Are the following voltages present on the MCU PWB?
Is there +24VDC between J11–10 and J11–2?
Is there +24VDC between J11–11 and J11–2?
Is there +24VDC between J11–12 and J11–2?
Is there +5VDC between J11–5 and J11–2?
Is there +5VDC between J11–6 and J11–2?
Yes No
Go to Step 3. Replace the LVPS Assembly.