Ricoh MP C3004 Field Service Manual page 1014

6. Troubleshooting
No.
SC817-00
No.
SC818-00
No.
SC819-00
1006
Type Error Name/Error Condition/Major Cause/Solution
D Monitor error: File detection / Digital signature error
• Bootloader cannot read any of diagnostic module, kernel, or root
filesystem.
• In a bootloader SD card, the digital signature checking for any of
diagnostic module, kernel, or root filesystem is failed.
• Any of the following items does not exist or is broken OS Flash ROM,
Diagnostic module in SD card, Kernel, Root filesystem
• Any of the following items is revised fraudulently: Diagnostic module
in SD card, Kernel, Root filesystem
• ROM update for controller system
• Use another booting SD card having a valid digital signature
Type Error Name/Error Condition/Major Cause/Solution
D Watchdog timer error
The system program fell into a bus-hold state or an endless loop of the
program interruption occurred, causing other process to stop.
• System program defective
• Controller board defective
• Optional board defective
• Turn the main power OFF/ON.
• Replace the controller board.
Type Error Name/Error Condition/Major Cause/Solution
D Kernel halt error
[xxxx]: Detailed error code
Due to a control error, a RAM overflow occurred during system
processing. One of the following messages was displayed on the
operation panel.