Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
6-44
6.3.4 ROS Assembly failure
NOTES:
1. Without the diagnostic tool, skip the Diagnostic Tool (DG) portion of step 8 and go to Section
6.3.22
Noise.
2. The control panel message may be: "Failure: 930 Optical System"
3. This FIP may also fix the LVPS.
4. This condition occurs if the following P/Js and signals are disconnected:
• P/J 112 of the LD PWB
• P/J 113 of the SOS PWB
• P/J 114 of the Scanner Motor Power
1. INITIAL ANALYSIS
Inspect the following components. Are they compatible with your printer version, correctly
installed, not damaged, deformed, or contaminated?
LVPS Assembly MCU PWB
ROS Assembly ROS Harness 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 these checks within 30 seconds after switching
power ON. After 30 seconds, the LVPS shuts down due to the no–load condition.
Switch ON Main Power.
Is there +24VDC between J12–13 and J12–12 on the MCU PWB?
Yes No
Go to Step 3. Go to Section 6.3.2 LVPS Assembly Failure (+5VDC).