Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
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6.3.3 Scanner Assembly failure Continued
4. SCANNER MOTOR ACTUATOR SIGNAL 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 +4VDC between J12–11 and J12–10 on the MCU PWB when the power is switched
ON?
Yes No
Replace the MCU PWB. Go to Step 5.
5. ROS HARNESS ASSEMBLY ANALYSIS
Disconnect J12 on the MCU PWB and J112 and J114 on the ROS.
Is there continuity (0
ΩΩ) between all wires on J12 and J112 and J114?
Yes No
Replace the ROS Assembly. Replace the ROS Harness Assembly.