Troubleshooting tools

Paper path check

If paper is not being picked up or is not moving through the paper path, you may want to observe all of the paper motion activities. Overriding PS204 (5L) or SW101 (6L and 6L Pro) allows you to observe:

lMotor rotation

lSolenoid action

lKick plate motion

lPaper Pickup Roller motion

lDrive Roller, Transfer Roller, Fuser Roller and Gear, and Delivery Roller Motion

To override PS204 and SW101

1Remove the Printer Covers (Figures 6-2, 6-3, and 6-4).

2For HP LaserJet 5LPrinter only: Press the Door Open flag down (Figure 7-7, callout 1) and lift the EP Cartridge flag (Figure 7-7, callout 2). These flags are located on top of the printer chassis to the left of the Laser/Scanner assembly.

For HP LaserJet 5L, 6L and 6L Pro Printers: Press SW101 (Figure 7-7, callout 3).

Note

The EP Cartridge flag (Figure 7-7, callout 2) is not present on the HP LaserJet 6L Pro.

1

2

3

Figure 7-7Overriding PS204 and SW101

3While holding the flags up, perform either an Engine Test or a Self-Test to observe paper motion. (See procedures earlier in this chapter.)

138 Troubleshooting

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