24 – Control panel messages
EN
All Printers (Exceptions: 4P, IIIP, IIP Plus, IIP)
• The printer door is open.
– Check that the toner cartridge is fully seated and that the cover is
firmly closed.
• A DC power supply malfunction or DC controller malfunction
occurred.
• Tab is missing on the top cover; replace the tab.
4V
• Check the front Door Open sensor flag sensor; it could be broken or
stuck.
– PS402 is located on the small Front Door Unit Terminal PCA, on
the front door under the transfer roller.
• A toner cartridge microswitch malfunction has occurred.
– Check the toner cartridge microswitch (SW501) on the high
voltage PCA.
• A DC controller PCA malfunction has occurred.
4 Plus, 4
• The plunger is missing on the top cover.
• A paper control PCA malfunction has occurred.
4Si, IIISi
• A PS1 malfunction has occurred.
– Check that the PS1 is blocked by the latch flag. Replace the PS1
if it is defective.
• The fuser bulb has burned out.
– Check to see if the fuser bulb turns on. If the fuser bulb does not
turn on, reset SW101 on the AC power supply.
• A DC controller PCA malfunction has occurred.
12 Printer Open
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