C: Button And Lcd Test - Canon mp628 Service Manual

<Button and LCD test>
Confirm the operation after replacement of the operation panel unit, board, or LCD unit.
1) Click Panel Check of the Service Tool on the connected computer. The machine LCD turns blue, waiting for a button to be pressed.
2) Press each button of the operation panel.
3) Only one button should be pressed at one time. If 2 or more buttons are pressed at the same time, only one of them is considered to be
pressed, and the other buttons are ignored.
The LCD is divided into 16 segments, representing each button. The color of a segment corresponding to the pressed button changes to red.
4) Rotate the Easy-Scroll Wheel clockwise and counterclockwise 1 round (16 steps) each, as follows:
4-1) Rotate the Easy-Scroll Wheel clockwise step by step. The LCD is divided into 16 segments, representing each step. The color of a
segment corresponding to the step changes from red to green.
If the wheel is rotated counterclockwise before clockwise round completes, the color of segment(s) corresponding to the number of
steps the wheel is rotated counterclockwise returns to red.
If the wheel keeps rotated clockwise over 1 round (16 steps), the color of segment(s) corresponding to the extra number of steps returns
to red, starting with the "Start" segment in the figure below.
4-2) When the Easy-Scroll Wheel is rotated clockwise 1 round (16 steps), press the OK button.
1. ON button
2. Back button
3. OK button
4. Up cursor button
5. Down cursor button
6. Left cursor button
7. Right cursor button
8. Black button
9. Color button
10. Stop button
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11. NAVI button
12. HOME button
13. Left function button
14. Right function button
15. [+] button
16. [-] button