Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
6-57
6.3.10 No–Paper Sensor failure
NOTES:
1. The diagnostic tool is not used in this FIP
2. The control panel message may be: Tray Empty
3. This FIP may also fix a bad cassette spring.
4. Try another cassette tray first.
1. INITIAL ANALYSIS
Inspect the following components. Are they compatible with your printer version, correctly
installed, not damaged, deformed, or contaminated?
Feeder PWB LVPS Assembly
Optional Feeder Assembly Feeder PWB AUX
Harness Assembly Tray 1 Feeder Assembly
Harness Assembly OUT MCU PWB
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 +5VDC between P/J 13–2 and P/J 13–4 on the MCU PWB?
Yes No
Go to Step 3. Go to Section 6.3.1 LVPS Assembly Failure (+5VDC).
3. NO–PAPER 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.
Remove the Paper Cassettes from the printer.
Is there +5VDC between P/J 13–1 and P/J 13–4 (Tray 1) on the MCU PWB?
Is there +5VDC between P/J 13–3 and p/J 13–4 (Tray 2) on the MCU PWB?
Yes No
Go to Step 4. Replace the MCU PWB.