Technical data

6.2 0820–0824 CLEAR PAPER PATH
• If the sheet jams in the area of the registration sensor or upper turn
roller after successfully feeding from a cassette, LCIT, or bypass slot.
a. Inspect the upper turn pinch roller which is on the feed door. Make
sure the roller turns freely and the pressure springs and door are
installed properly.
b. Inspect the gears that drive the upper turn rollers. Look for
missing teeth or gear damage and listen for thumps or grinding
noises during printing.
c. Inspect the 6-pin connector, which is located next to the registration
clutch, and plugs into P/J38 on the back of the DC control board.
The registration and upper turn roller clutches and the registration
sensor connect through this plug.
d. Swap the registration transport.
e. Swap the DC control board.
4. Turn to one of the following FIPs if the sheet never reaches the upper turn
roller or never leaves the selected feed source:
• Section 6.2.2, 0820 Paper Under the BYPASS Sensor
• Section 6.2.3, 0821 Upper Cassette Feed Failure
• Section 6.2.4, 0822 Lower Cassette Feed Failure
• Section 6.2.5, 0823 LCIT Feed Failure
• Section 6.2.6, 0824 Duplex Refeed Failure
6.2.1 Registration Transport Diagram and Tests
The following tests and wiring diagram can be used to troubleshoot the
registration sensor and clutch beyond the FRU level:
• Enter 1701 test code 0810. The SENSING prompt should appear. When
you manually actuate the registration sensor, the control panel lights up
and beeps. Figure 6–4 shows the components of the registration sensor
circuit.
• When you enter the 1701 test code 0851, the upper turn roller clutch will
energize for 10 seconds. Test the clutch by manually rotating the upper
turn roller. It must turn freely when the clutch is deactivated and lock up
when the clutch is energized.
6–6 Paper Path Jam FIPs