Toshiba e-STUDIO2008A Service Manual page 882

8.5 Other Errors
8.5.1 When "SET FUSER UNIT" is displayed.
When the signal for installing the fuser unit cannot be detected with the LGC board, "SET FUSER
UNIT" appears.
In this case, check the following.
1. Check that the screw fixing the fuser unit is not loose.
2. Remove CN309 and check if the circuit between 1 pin and 7 pin is electrically conducted.
3. Replace the LGC board.
8.5.2 "Authentication Failed" is displayed
• Reset the service password
Reset the service password by accessing [USER FUNCTIONS] -> [ADMIN] -> [GENERAL] ->
[PASSWORD SETUP] -> [RESET SERVICE PASSWORD].
• Initialize the SRAM
Refer to  P. 9-25 "9.2.8 Precautions and procedure when replacing the SRAM", and perform "[D]
Initialize SRAM system storage area" and following steps.
• Replace the SRAM board
Refer to  P. 9-25 "9.2.8 Precautions and procedure when replacing the SRAM", and replace the
SRAM board.
8.5.3 Hard disk full error "H04" is displayed
Perform the following, referring to P. 9-14 "9.2.3 Precautions and procedures when replacing the
HDD/SSD".
• Back up the user data
(1) [A] Back up data in HDD
(2) [B] Print out "FUNCTION LIST FOR MAINTENANCE"
(3) [C] Print out "FUNCTION" list
• Initialize the HDD
(4) [E] Replace / Format HDD
Step 2 for replacing the HDD is unnecessary.
• Restore the user data
(5) [F] Reset user's setting items and restore data/information
(6) [G] Reset "FUNCTION LIST FOR MAINTENANCE"
(7) [H] Reset "FUNCTION" list
• Adjust image quality
(8) [I] Adjust image quality
8.5.4 Error code "M00" is displayed while updating firmware
Check Item
Switching regulator
LGC board
Replacement part
Switching regulator
LGC board
e-STUDIO2008A/2508A/3008A/3508A/4508A/5008A
ERROR CODE AND TROUBLESHOOTING
Measure
• Connector check (CN415)
• Harness check
• Connector check (CN301, CN312)
• Harness check
Remark
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