Canon imageCLASS MF8450c, Service Manual

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Chapter 16
16-39
T-16-71
key
LEFT
key
UP
key
RIGHT
key DOWN
Reset key RESET
Start key START
Stop key STOP
OK key (Key check is completed.)
TESTMODE > PANEL
Key, wheel, LCD, LED, and flicker check
Sub item Description
WHEEL CHECK START Wheel check
Check the operation of the wheel.
Turning the wheel clockwise increases the value, and turning it counterclockwise decreases the value. (Values are displayed in
the range from 0 to 23.)
When pressing the OK key after operation check, OK or NG is displayed in the following condition.
OK: Entry was made with more than 12 consecutive clicks counterclockwise, and with more than 12 consecutive clicks
counterclockwise. (Refer to MEMO.)
NG: Requirements for displaying OK are not satisfied. (The OK key was pressed with clockwise or counterclockwise operation
only.)
MEMO:
- 1 click increases/decreases the value by 1.
- The wheel rotates 360 degrees with 24 clicks.
LED CHECK START LED check
Check the LED operation.
Every time pressing the OK key after LEDs are completely turned off, the Start Key Lamp --> Execution/Memory Lamp --> Error
Lamp light up sequentially. When pressing the Return key in midstream, LED check stops and NG is displayed.
MEMO:
The main power lamp lights up constantly.
LCD CHECK START LCD check
Check the LCD operation.
Every time pressing the OK key, colors are displayed on the entire LCD in the order of black-->white-->red-->green-->blue.
When LED check is completed, OK is displayed. When pressing the Return key in midstream, LCD check stops and NG is
displayed.
FLICKER CHECK START Flicker check
Adjust and check the LCD flicker. Adjustment can be made by changing the setting value.
Perform operation in the order of "FLICKER ADJUST -> FLICEKR MIN/MAX -> FLICKER CONFIRM".
Type of Key Character String Displayed