HP laserjet 3390, 3392 all-in-one Manuale Di Servizio

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Duplex-drive gears
1.
Remove the following components.
Right cover. See 
Left cover. Se
.
Rear cover. See 
.
Top cover. See 
.
Convenience-stapler power supply (HP LaserJet 3392 only). See 
.
Convenience-stapler bracket and strap (HP LaserJet 3392 only). See 
.
Fan. Se
.
2.
Remove three screws (callout 1) and then lift the assembly away from the all-in-one.
NOTE
The gears are not attached to the gear plate. Carefully remove the gear plate and
the gears together to prevent them from falling out of the assembly. If the gears are
separated from the assembly, see to correctly reinstall them.
1
Figure 5-56
  Remove the duplex-drive gears
Hint
It might be easier to replace the assembly if you place the two large gear-sets into
the appropriate holes on the chassis first and then line up the holes in the gear plate with
the gears as you replace the plate.
154
Chapter 5   Removal and replacement
ENWW