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1.7 Diagnosis Mode
1.7.1 Summary
This mode displays the counter, which counts the number of pages which are stored in the non-volatile memory
and which will be printed, checks (using the input test) that the sensors and switches are functioning properly and
checks the operation and function (using the output test) of each component (main motor, HVPS, etc.).
1.7.2 Different Types of Diagnosis Mode Operation
The diagnosis mode is able to perform the following three functions:
• Counter Display
• Input Test
• Output Test
(The output test is further divided into each output component.)
1.7.3 Entering Diagnosis Mode
This mode is entered by pressing KEY 0 while turning the power switch ON.
The LCD will display the following message when diagnosis mode has been entered.
When diagnosis mode has been entered, the top row will display the type of the diagnosis code chosen and "DG"
will be displayed in the bottom row followed by a two digit number representing the diagnosis code.
Note:
If a paper jam occurs when the power supply is turned ON, diagnosis mode can still be entered.
However, diagnosis mode cannot be entered if an incorrect value is entered in ROM CHECK or RAM
CHECK when the power supply is turned ON.
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Diagnosis code
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