Question edited for clarity
https://www.copytechnet.com/forums/toshiba/142847-toshiba-estudio-3508a-error-f101-1-a.html
HDD, SYS board, Setting 1. Turn the power of the equipment OFF and check the
connection of the HDD.
- Connector and harness check
- Check if the connector pins of the HDD are bent.
- Check if HDD for other equipment is not installed.
- Check if SRAM for other equipment is not installed.
2. If the error still occurs after step 1, perform the following.
- Perform HS-73 Firmware Assist mode -> Key
Backup/Restore and check that each Key Status is
"OK".
- If not, recover the key (press [Key] and select the
menu, and then press [Execute]).
3. If the error still persists after step 2, perform the
following.
- Perform HS-73 Firmware Assist mode -> Format
HDD, and then install "System software" (HS-49
Firmware Update mode -> SYSTEM SOFTWARE
(HD Data)).
Notes:
The following items will be deleted by HS-73
Firmware Assist mode -> Format HDD.
• Message Log
• Job Log
• Spool Data (Print, Email reception)
• Template
If F101_1 occurs with secure HDD or the error
persists after performing step 3, perform step 3 after
performing HS-74 HDD Assist mode -> Revert
Factory Initial Status HDD.
4. If the error persists even after step 3, replace the HDD.
5. If the error persists even after step 4, replace the HDD
harness.
https://www.google.com/search?q=Toshiba+estudio+4508A+has+an+error+code+of+F101
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