Adjustment Mode; U2:Ros Fail - Oki B6100 Technical Manual

There is a problem with the ROS Assy.
Step
1
INITIAL ANALYSIS
Inspect the following components.
• ROS Assy (PL8.1.9)
• PWBA HKB26 MCU (PL10.1.13)
• PWBA HKB PS (PL10.1.17)
• CRU (PL8.1.1)
• Harness Assy ROS (J21-J211, J212, J213) (PL8.1.7)
• Harness Assy VDO (J22-J233) (PL8.1.8)
Are they compatible with your printer version, correctly
installed, not damaged, deformed, or contaminated?
2
NVRAM ANALYSIS
Check the parameter using ADJUSTMENT MODE MENU.
Is the parameters set correctly?
3
ROS MOTOR ANALYSIS
1. Check the ROS Motor using ROS MOTOR TEST.
2. If you cannot hear the ROS Motor running, unplug P/J29
(Motor Assy Main).
Can you hear the ROS Motor running before the U2 code
appears?
4
LD DIODE ANALYSIS
1. Disconnect P/J22 and P/J21 on the PWBA HKB26 MCU
(PL8.1.13).
2. Close the Cover Assy Front (PL1.1.9).
3. Switch ON Main Power.
4. Check the voltage between P21-5 and P21-6.
Is there +5 VDC between P21-5 and P21-6?
OKI B6100 Laser Printer - Base Engine Technical Manual
Version 1.0
Actions and Questions
Primary FIPs:Error Codes

3.2 U2:ROS FAIL

Yes No
Go to step 2. Replace the
problem com-
ponents.
Go to step 3. Set correct
paramete.r
Go to step 4. Go to 6.3
ROS Assy
Failure.
Go to 6.3 Go to 6.1
ROS Assy PWBA HKB
Failure. PS Failure
(+3.3 VDC).
3-9