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Konica Minolta bizhub C4000i Service Manual page 331

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bizhub C4000i/C3300i
4.  TROUBLESHOOTING USING SELF-DIAG. (FULL)
4.1  Overview of Self-diag. (Full) function
• If a trouble code occurs or the machine cannot operate normally due to defects of the control system hardware parts, by executing the
"Self-diag. (Full)", the defective areas on the control system hardware parts can be identified.
• The reason for troubles is broadly divided into the control system hardware trouble and the firmware trouble, and it is difficult to identify
where the trouble occurs with the trouble code.
In the "Self-diag. (Full)", two functions are provided, the one diagnoses if troubles occur on the control system hardware, and the other one
detects defective parts and displays the "error code" corresponding to the defective parts on the control panel.
NOTE
▪ Before replacing the control system hardware parts like the base board, make sure to execute the "Self-diag. (Full)".
Self-diag. (Full) flow for a trouble code
Detect trouble code
Start Self-diag. (Full)
Diagnosis result
NG
Display Error Code key
Display error codes
Troubleshooting against each error code
4.2  Self-diag. (Full) Procedure
1. When a trouble code is displayed, turn OFF the main power switch after the MFP is stopped.
2. Execute the Self-diag. (Full). For details of the method for executing the Self-diag. (Full), refer to
3. After completing the Self-diag. (Full), the diagnosis result will be displayed for each item. (OK/NG)
4. If [OK] is displayed for all items, turn OFF the main power switch.
5. If [NG] is included in the diagnosis result, after completing the diagnosis for all items, the [Error Code] key is displayed.
6. Touch the [Error Code] key to display the [Error Code].
7. Check the displayed [Error Code], then turn OFF the main power switch, and disconnect power cord from the outlet.
8. Refer to the Service Manual [Error Code List], and perform the troubleshooting against each error code.
NOTE
▪ Perform the troubleshooting in the sequence from step 1 of "Corrective action procedure" against each item while checking
that if each trouble has been resolved. Do not perform the troubleshooting against all troubles at once.
▪ If no error code is displayed, perform the troubleshooting against each trouble code in "Trouble Code" displayed in step 1.
9. Even if no [NG] is displayed (no trouble is reproduced) after executing the troubleshooting against each error code or the Self-diag. (Full),
execute the "Self-diag. (Full)" again, and make sure that all troubles on each device have been resolved.
4.2.1  Auto Execution of Self-diag. (Full)
• Set the [Switch NO.163] to [00000010] at [Bit assignment] and [02] at [HEX assignment] in [Service Mode] -> [System 2] -> [Software
Switch Setting], so that the "Self-diag. (Full)" can be executed automatically when a "trouble code" occurred.
Refer to [Service Mode] -> [State Confirmation] -> [Self-diag. (Full)].
4.2.2  Error code resetting procedures
1. Stop the machine with the Error Code screen being displayed.
2. Turn OFF the main power switch. After waiting 10 seconds, turn ON the main power switch again.
3. Reboot the machine.
NOTE
▪ If the error has not been resolved, the trouble code will reappear after rebooting the machine.
L TROUBLESHOOTING > 4. TROUBLESHOOTING USING SELF-DIAG. (FULL)
OK
Troubleshooting against each trouble code
L-60
I.13.9.2 Self-diag.
(Full).

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