Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
6-4
6.2.2 ROS Assembly Problem: Fault Code U2
Continued
5. ROS LASER DIODE ASSEMBLY ANALYSIS
Disconnect P/J 111 on HVPS. Perform this check within 30 seconds after switching power on.
After 30 seconds, the LVPS shuts down, due to a no-load condition. Is there +5VDC between
P/J15–8 and P/J11–2 on the MCU PWB?
Yes No
Go to Section 6.3.11 Laser Diode
Switch Failure.
Go to Section 6.3.1 LVPS Assembly Failure
(+5VDC).