Points To Note After Replacing - Canon NP6621 Service Handbook

a. Measuring the Nip
Measure the nip when the machine is turned on
for the first time in the morning.
1) Open the copyboard cover, and make an A4
(SM0-1) solid black copy.
2) Place the copy in the cassette tray face down
(solid black facing downward).
3) Press the service mode switch (SW850) with a
hex key.
• The machine starts service mode and indi-
cates '1'.
4) Press '4' on the numeric keypad.
• The display indicates '4'.
5) Press the AE key.
• The machine enters operation/inspection
mode and indicates '401'.
6) Press '6' on the numeric keypad.
• The display indicates '406'.
7) Press the Start key.
• The paper will be fed from the cassette, and
the machine will be ready to accept new
settings as in Figure 2-223. (The paper will be
discharged.)
Reference:
The paper stops while half of it is held between
the fixing rollers; it will then be discharged fully
about 10 sec later.
8) Measure the nip.
16

Points to Note After Replacing

the Upper Fixing Unit
If you replaced the upper fixing unit, you must
enter the temperature offset value of the heater
using service mode No. 304. (See p. 7-10)
STANDARDS AND ADJUSTMENTS
17 Mounting the Oil Application
Solenoid
Screw the oil application solenoid in place where
its lever is lightly in contact with the support of the oil
application roller.
Oil application
Solenoid
Screw
Figure 2-224
Screw
Lever
Contact
Support
2–9