Canon ImageRunner iR8500 Series Service Manual page 832

Chapter 16
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HD-CLEAR
When you have executed HD-CLEAR, all contents of the partition in question (files, sub directories) will be lost.
The actual formatting will take place when the machine is started up after it has been turned off upon execution of HD-CLEAN.
At this time, the Startup screen shows a progress bar, its edge reaching the end in about 5 min. Be sure not to turn off the power while the progress bar is
moving.
This function (i.e., mode item) cannot be used for BOOTDEV and DOSDEV4; to re-format any of these 2 partitions, you will have to use the SST.
Keep in mind that formatting of the HDD in service mode will necessarily be full formatting.
HD-CHECK
If the power is cut while data is being written to the HDD, the occurrence of a write-suspended sector is a possibility. When HD-CHECK is run on such a
sector, repairs will be made, but all data in the sector will be lost. A write-suspended sector may be repaired only by HDD-CHECK (0); if not TYPE-
TYPE=0, the task will be limited to an FS level check.
If the write-suspended sector happens to be a critical sector that holds a control area, there is no way of repairing it; you will have to execute HDD
formatting.
Replacing the HDD
1. Turn off the main switch.
2. Connect the new HDD.
3. Start up the machine in safe mode.
4. Connect the SST, and execute full formatting.
5. Using the SST, download the system software (System, Language, RUI).
6. Turn off and then back on the power. (It may take about 5 min for the machine to start up).
16-36
YY Description
13, 25 The ongoing write operation has been
suspended.
10, 12, 14, 22, There is a system error or a packet
23, 24 data error.
Remedy
There is a likelihood of the presence of damage to
the file data on the HDD (e.g., Box).
1. Set '0' for TYPE-TYPE, and execute HDD-
CHECK (40 to 50 min). Thereafter, turn off and
then back on the power.
2. If the symptom still exits after the foregoing, set
'1' for TYPE-TYPE, and execute HDD-CLEAR.
(In the case of DOSDEV4 or BOOTDEV, execute
formatting and re-installation once again.)
3. If the symptom still exists after the foregoing,
suspect a fault on the HDD, and replace the HDD
and re-install the system software.
The data may be corrupted or there is a software
bug.
1. Start up in safe mode, and execute full
formatting using the SST and re-install the system
software (System, Language, RUI). Thereafter,
turn off and then back on the main power.
2. If the symptom still exits after the foregoing,
suspect a fault on the HDD, and replace the HDD
and re-install the system software.