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Eng
Kyocera TASKalfa 2520i
Troubleshooting. Malfunction 2
3. No display in the operation panel
(Image on the operation panel is faulty or becomes pure white)
Step |
Check description |
Assumed cause |
Measures |
1 |
Resetting the main power |
The main firmware does not start correctly. |
Turn off the power switch and pull out the power plug. After passing 5s, reinsert the power plug and turn on the power switch. |
2 |
Checking the connection |
The connector is not connected properly. Or, the wire is faulty so that the power for display is not supplied. |
Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire.
- Main PWB - Operation panel main PWB
- Main PWB - Low-voltage PWB
|
3 |
Replacing the main PWB |
The main PWB is faulty. |
Replace the main PWB. |
4 |
Checking the operation panel PWB |
The operation panel main PWB is faulty. |
Replace the panel main PWB. |
5 |
Replacing the low voltage PWB |
Low voltage power PWB is faulty and the power is not supplied to the main PWB. |
Replace the low voltage PWB. |
4. The operation panel remains displaying "WELCOME" and does not change
Communicate between the main PWB and the operation panel main PWB can't be done.
Step |
Check description |
Assumed cause |
Measures |
1 |
Resetting the main power |
The communication between the main PWB and the operation panel main PWB is faulty. |
Turn off the power switch and pull out the power plug. After passing 5s, reinsert the power plug and turn on the power switch. |
2 |
Checking the connection |
The connector is not connected properly. Or, the wire or the SATA cable is faulty. |
Clean the following wire, the terminal of SATA cable connector and reconnect them. If there is no continuity, replace the wire.
- Main PWB - Operation panel main PWB
|
3 |
Executing U021 |
The backup RAM data is faulty. |
Execute U021 to initialize the backup RAM data. |
4 |
Replacing the main PWB |
The main PWB is faulty. |
Replace the main PWB. |
5 |
Replacing the operation panel main PWB |
The operation panel main PWB is faulty. |
Replace the panel main PWB. |
5. The login fails with other than the ID card
Step |
Check description |
Assumed cause |
Measures |
1 |
Changing the setting |
[User/Job Account] is valid while the card authentication kit is not installed. |
Set [Permit] at [User/Job Account] > [ID Card Settings] > [Key Login] via the System Menu. |