Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
6-39
6.2.20 Inoperative Fan
NOTES:
1. This FIP does not use the diagnostic tool.
2. There is no corresponding control panel message for this item.
3. This FIP may also fix erratic behavior due to overheating.
4. This is a 24V fan.
1. INITIAL ANALYSIS
Inspect the following components. Are they compatible with your printer version, correctly
installed, not damaged, deformed, or contaminated?
• MCU PWB
• Fan
• LVPS 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 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.
Is there +24VDC between P/J 18–3 and P/J 18–2 on the MCU PWB?
Yes No
Replace the Fan. Go to Section 6.3.2 LVPS Assembly Failure (+24VDC).