Timing

Sequence of operation

The microprocessor on the DC controller controls the product operation sequences.

Table 5-1Sequence of operation

Name

Timing

Purpose

 

 

 

WAIT

From power-on or the door is closed until the end of

Detects presence of a print cartridge.

 

the main motor initial drive.

 

 

 

 

STBY (standby)

From the end of the WAIT or LSTR period until either

Prepares the product to receive print commands

 

a print command is sent from the formatter or the

 

 

power is turned off.

 

 

 

 

INTR (initial

From the time the print command is received from the

Starts each high-voltage biases, the laser scanner,

rotation)

formatter until the fuser reached its targeted

and fuser in preparation for printing.

 

temperature.

 

 

 

 

PRINT

From the end of the INTR period until the last media

Forms the image on the photosensitive drum and

 

completes the fusing operation.

transfers the toner image to the media.

 

 

 

LSTR (last

From the end of the PRINT period (when high-voltage

Delivers the last page of a print job.

rotation)

is turned off) until the main motor stops rotating.

After LSTR, the product either returns to STBY or, if

 

 

 

 

another print command was sent from the formatter,

 

 

enters INTR.

 

 

 

ENWW

Timing 83

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Image 95
HP P2050 manual 1Sequence of operation, Name Timing Purpose