Basic Sequence Of Operations; Basic Sequence Of Operations At Power-On (1/2) - Canon NP6251 Service Manual

CHAPTER 2 BASIC OPERATION
C. Basic Sequence of Operations

1. Basic Sequence of Operations at Power-On (1/2)

When the surface temperature of the fixing roller is 75°C or less and, in addition, the
ambient temperature is 17°C or more at power-on,
Fixing main heater
(H1)
Fixing sub heater
(H2)
Main motor (M1)
Primary charging
assembly
Developing bias DC
Developing bias AC
Pre-transfer charging
assembly DC
Pre-transfer charging
assembly AC
Transfer charging
assembly
Separation charging
assembly DC
Separation charging
assembly AC
Pre-exposure LED
Blanking exposure
LED
Scanning lamp (LA1)
Surface potential
control timing
Primary, transfer,
separation, pre-transfer
charging wire cleaning motor
*1 During potential control (CNTR1, CNTR2), V
exposure lamp LEDs corresponding to the potential sensor are turned OFF.
*2 If the surface temperature of the fixing roller is 100°C or less when the power switch is turned
ON, the primary/pre-transfer/transfer/separation charging wire is cleaned.
(Cleaning is also executed every 2,000 copies.)
*3 Wait-up state ends in 10 sec after the end of potential control to speed up warm-up time.
2-4
COPYRIGHT © 1997 CANON INC.
Power switch
195°C
ON
WMUP INTR
Controlled
to 200°C
*1
*1
*2
CNTR1 CNTR2
*1
V
L2
V V
D
L1
and V are measured; therefore, blanking
D L1
Figure 2-103
CANON NP6350/NP6251 REV.0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
About 10 sec after
end of CNTR2
LSTR STBY
*3