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

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

When the surface temperature of the fixing roller is 75°C or less and, in addition, the
ambient temperature is 17°C or less 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
Charging wire
cleaning motor
Differences from Sequence 1/2
• WMUPR is executed until the surface temperature of the fixing roller reaches 200°C (210°C)
without ending LSTR in 10 sec after potential control (CNTR1, CNTR2).
• The surface temperature of the fixing roller is 75°C or less at power-on and the ambient
temperature is 17°C or less for the value within parentheses; for the value outside
parentheses, if the surface temperature of the fixing roller is 75°C or more.
COPYRIGHT © 1997 CANON INC.
Power 195°C
ON (200°C)
WMUP INTR CNTR1
V
Figure 2-104
CANON NP6350/NP6251 REV.0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CNTR2 LSTR
V
L2
V
D L1
CHAPTER 2 BASIC OPERATION
200°C
(205°C)
WMUPR STBY
Controlled to 200°C
(210°C)
2-5