Specifications

● Memory Check
Used to check whether the ROM/RAM on the PWB-B Board (MSC Board) is accessed properly or
not.
Check Result Screen Display Action
Normal
"Memory check completed. Turn the
Power Switch OFF, and then ON.
The Power Switch must be turned OFF
and ON.
Faulty
"ROM ERROR" Change PWB-B (IC2B).
"Message ROM ERROR" Change PWB-B (IC4B).
"RAM ERROR" Change the PWB-B Board.
"VRAM ERROR" Change the PWB-B Board.
"LCDTC ERROR" Change the PWB-B Board.
<Setting procedure>
•
Selecting this mode automatically puts the copier in the Memory Check mode.
Note: For the screen displayed after completion of the check, see the above table.
● Controller Board Check
Used to make a self-diagnostic check on the PWB-A (Master Board).
Check Result Screen Display Action
Normal
"Board Check mode highlighted
returns to the previous state."
None
Faulty "Malfunction code C03XX is displayed." Change the PWB-A Board.
<Setting procedure>
•
Selecting this mode automatically puts the copier in the Controller Board Check mode.
Note: For the screen displayed after completion of the check, see the above table.
● Panel Indication Check
Used to check the Control Panel LEDs and screen (liquid crystal).
<Setting procedure>
1. When this mode is selected, the LEDs which are all ON are turned OFF in the following
sequence. When all the LEDs are turned OFF, they are turned ON again in the same sequence.
All ON Mode Check Key Energy Saver Key Interrupt Key Start Key (Orange)
2. Checkered patterns appear on the screen (liquid crystal).
3. Select individual patterns. If the pattern displayed on the screen is switched from white to black
or from black to white, it is judged that the corresponding liquid crystal is normal.
S-50