Canon Color iR C3480 Service Manual page 656

Sub item
NIP-CHK Output for automatically measuring fixing nip width
The fixing nip width automatic measurement is started, and the measurement sheet is printed. The two-sided printing
operation is performed with solid magenta printed on the first side and nothing printed on the second side, and nipping
is performed when the second side is fixed.
This is used in order to check the nip width when the fixing unit, fixing film unit or pressure roller is replaced.
Operating procedure
1) Place A4 (LTR) size sheets in the stack bypass tray.
2) Press the OK key. (The paper in the stack bypass tray is fed.)
3) The sheets which have been fed stop temporarily at the fixing nip unit, and are delivered 15 seconds later.
4) Check that the nip width of the delivered sheets corresponds to the rating.
Nip width rating
Center area [b in figure below]: 8 mm or more
Left and right edges [a, c in figure below]: 1 mm or less
6. PANEL
Sub item
LCD-CHK Used to check missing dots in LCD.
Operation method
1) Select this item, then press the OK key to start the operation.
The touch panel's front surface should light repeatedly in the sequence: white, black, red, green and blue. (Check that it
does.)
2) Press the stop key (the clear key on printer models) to end the operation.
LED-CHK Used to check that operation panel's LEDs light.
Operation method
1) Select this item, then press the OK key to start the operation.
The LEDs light sequentially.
2) Press LED-OFF to end the operation.
LED-OFF Used in checking that operation panel's LEDs light.
Operation method
1) Selecting this item stops the LED-CHK operation.
KEY-CHK Used to check key input.
Operation method
1) Select "KEY-CHK" to display the number/name of the entered key.
2) Press the key to check. If the key is normal, the text for it appears in the
touch panel (see separate table) .
3) Select "KEY-CHK" again to exit the key input check operation.
TOUCHCHK Used to adjust coordinate positions of analog touch panel.
Operation method
- Used to align the touch panel touch position with the LCD coordinate position.
- Perform this service mode item if you have replaced the LCD unit.
1) Select "TOUCHCHK" to display the item in reverse, then press the OK key.
2) "+" appears on the touch panel at 9 positions sequentially. After you press each position, adjustment is complete.
T-17-45
COPIER>FUNCTION>FIXING
Description
T-17-46
COPIER>FUNCTION>PANEL
Description
Input key numbers, names
Key Screen display
0 to 9, #, * 0 to 9, #, *
Reset RESET
Stop STOP
User mode USER
Start START
Power save STAND BY
Clear CLEAR
Secret code ID
Help ?
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