HP LaserJet 4L - Page 212

Troubleshooting
Printer Error Troubleshooting
Table 7-3
Door Open Error
LaserJet LaserJet 4P/4MP
4L/4ML LEDs Display Panel
Description & Recommendations
D
$m
12 OPEN OR NO EP
1. Printer’s Top Door is open andior the
ma
toner cartridge is missing or not installed
~m
properly. Reinstall toner cartridge and close
door.
o=
2. Part of the Top Door that pushes the
Error light is on
plunger down is broken. Replace the Top
steady. All
Door,
other lights are
3, Top Door Switch (Plunger Assembly) is
off.
broken. Replace (see Figure 7-3).
4, Toner Cartridge Lever Assembly is
broken, Replace the Assembly,
5, Faulty Microswitch SW201 (Top Door
Switch) on the DC Controller PCA, Replace
DC Controller PCA.
Top Door Microswitch (SW201 )
Metal Switch Arm
--- --- -- ..—.
Figure T-3
Top Door/Toner cartridge Plunger and Lever Assembly
7-9