Canon LBP-2000 Service Manual download pdf (Page 45)

CHAPTER 2

2 - 6

C. Power-On Sequence

The following shows the flow of operation from when the power switch is turned on to when the

Printer enters warm-up state.

Standby

Power ON

CPU initialized

/PPRDY signal generated

Communication with video interface started

Option feeder connection checked

Fixing heater

Main motor ON

Main motor OFF

Primary charging (DC+AC), developing bias (AC+DC),

transfer negative bias ON

Primary charging (DC+AC), developing bias (AC+DC),

transfer negative bias OFF

Fixing assembly temperature 140

˚C

Is fixing assembly temperature 195

˚C

(target)

within 25 sec from fixing heater ON?

Auto delivery will be initiated if the registration

paper sensor detects paper.

A jam will be identified if the registration paper

sensor or the delivery sensor detects paper.

The Printer changes to standby status for

the following conditions after the power

switch is turned on to reduce with time:

• 25 sec or more passes and, in addition,

the temperature of the fixing assembly is 150˚C or higher.

• 27 sec or more passes and, in addition,

the temperature of the fixing assembly is 145˚C or higher.

The printer inside is

checked for residual paper.

YES

Figure 2-1-4

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Canon LBP-2000 Service Manual Page 45