Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
6-53
6.3.8 Registration Sensor failure
NOTES:
1. The diagnostic tool is not used in this FIP
2. The control panel message may be: "Paper Jam>Fuser" if the registration sensor stays in
one state during a print cycle.
3. This FIP may also fix paper friction.
4. Make sure inlet chute that holds the sensor is securely in place
1. INITIAL ANALYSIS
Inspect the following components. Are they compatible with your printer version, correctly
installed, not damaged, deformed, or contaminated?
• Registration Sensor
• MCU PWB
• LVPS Assembly
• Sensor 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 ASSEMBLY ANALYSIS
Disconnect P/J 111 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.
Is there +1.5VDC between P16–4 and 16–5 on the MCU PWB?
Yes No
Go to Step 3. Go to Section 6.3.1 LVPS Assembly Failure (+5VDC).
3. REGISTRATION SENSOR ACTUATOR SIGNAL ANALYSIS
Disconnect P/J 111 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.
Is there +5VDC between P16–6 and 16–5 on the MCU PWB?
Yes No
Go to Step 4. Replace the MCU PWB.