Canon NP6251 Service Manual page 781

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CHAPTER 11 TROUBLESHOOTING

Use it to enable or disable idle rotation mode to

prevent distorted images in high humidity conditions

or if the images are too light, say in the morning.

Use it to switch idle rotation mode when the power

is turned on while the surface temperature of the

fixing roller is 75°C or less.

Even under normal operating conditions, set it to '1'

or '2' if the humidity increases at night to cause

image faults.

Use it to switch the toner supply sequence by the

humidity sensor.

Use it to enable or disable messages (always or

only when in service mode; Add Fixing Cleaning

Belt and Waste Toner Full).

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CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)

0: OFF (no idle rotation)

1: ON (control at IDL-

MODE setting)

0: auto control by data

of humidity sensor

1: 2-min idle rotation

2: 5-min idle rotation

0: toner supply motor

control by humidity

Medium to low humidity:

High humidity:

1: 2 sec ON, 1 sec

0: only in service mode

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