Table 7-2 Alphabetical printer error messages (continued) 3. Refer to the wiring diagram and verify all connections (J103 of the DC controller PCB and to SW5). Verify they are firmly seated. Verify that both the drum and ITB drawers are firmly closed; closing these drawers also closes SW4 (see Figure 7-31). Note Closing the rear door, the drum drawer, and the ITB drawers closes SW4 and SW5. When either of these switches is open, the +24 V supply is disabled. This safety feature protects the operator from any high voltages. CLOSE TOP COVER Description: SW2 (refer to Figure 7-29) indicates whether or not the printer’s toner access cover is closed.
When the toner access cover is closed, a lever is pushed down. This in turn rotates a pivot forward, opening the top cover switch (SW2). Action: 1. Close the top cover. 2. If the message persists, remove the printer’s top assembly cover and verify all mechanical linkages associated with SW2 (see Figure 7-29). 3. Verify that the connector on J1003 of the DC controller PCB is firmly seated. CLOSE UPPER FRONT DRAWER Description: The drawer that holds the imaging drum (the drum drawer) is open. Switch SW3 (refer to Figure 7-31) indicates that the drawer is open.
When the drawer is closed, a plastic protrusion on the lower left corner of the drawer pivots an arm that allows SW3 to toggle to the open position. Action: 1. Open the drawer and firmly push the drawer closed using one hand in the middle of the drawer. 2. If the message persists, remove the printer’s left-side cover and inspect the mechanical linkage that closes SW3. 3. Refer to the wiring diagram and verify the wiring. The two-wire connector should be firmly seated to SW3 and the wiring harness should be firmly seated to connector J1003 of the DC controller PCB. 4. If the message persists, use an ohmmeter to verify functionality of SW3. 5.
Verify FM3 (in the front of the Imaging drum drawer) is functioning properly. The fan con-nects via J77 to J1022 on the DC Controller. Note Closing the drawer also closes SW4 (the drum drawer switch). When SW4 is open, the +24 V supply is disabled. This safety feature protects the operator from high voltages when the drum or ITB drawer is open. COLD RESET (4500) -or- RESTORE FACTORY SETTINGS (4550) Description: The cold reset power-up sequence has been entered. Action: Most printer variables will reset to their factory default values. CONTINUOUS PAGE PRESS CANCEL JOB (4500) Description: The printer configuration page is being printed continuously. Action:
Press [Cancel Job] to terminate continuous configuration page printing and return the printer to the READY state. Note The 4550 has a paper path test that can be run from the Infomraiton menu. DATA RECEIVED Description: The printer has received and processed data and is waiting for a form feed. Action: Press [Cancel Job] and resend the last page of the job making sure a form feed is sent with it, or press [Go] to feed a new sheet of media through the printer. C7085-90921 Chapter 7 Troubleshooting 219