HP LaserJet II Serie Manual De Instrucciones página 202

HP 33440/HP 33449 COMBINED SERVICE MANUAL
Registrationflransfer Area Checks
The Registration Assembly aligns the leading edge of the paper with the print image on the
photoconductive drum. Drive to the Registration Rollers is provided by the Main Motor via the
Registration Roller clutch (SL302). During normal operation, the Main Motor is continuously
operational tier receiving the print (PRNT) command. The Registration Rollers are not rotating
since they are held in position by solenoid SL302'S lotting lever.
Following Main Motor startup, the Feed Roller Assembly first feeds paper to the Registration
Rollers. When the image on the photosensitive drum and the leading edge of the paper (which
is being held in the Registration Rollers) are aligned, the DC Controller enables the REGD
(Registration Roller Clutch Drive) signal that energizes solenoid SL302. The energizing of this
solenoid engages the Registration Roller clutch, thereby allowing the rollers to advance the paper
so that the image may be properly transferred to the paper at the transfer station.
Static
Registration
Clutch
Transfer
II
Ground Defeat Tab
Corona
Springs
Upper Tra~sfer
Registration
Guide
Roller
Figure 7-14. Registration
Assembly
7-38