Canon imageRUNNER ADVANCE 6075 Series Service Manual page 82

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Technology > Main Controller > Controls > HDD mirroring feature (option)
● Overview of Trouble Recovery
When any trouble occurs in the mirroring system, take the action for recovery appropriate to
each mode.
The HDD in trouble can be located by the red LED on the LED PCB.
In case the master HDD cannot be located, turn OFF/ ON the power to check whether the
green LED is lit on the LED PCB.
The firstly blinked green LED (ChA or ChB) in a high speed tells the Master HDD, which is
accessed firstly.
The green LED not lit on a channel tells the location of Backup HDD.
Name of
Status
Mode
Mirror Mode Normal (at standby) Under normal operation
Degrade HDD1 in trouble 1. Check the connection between HDD1 and
Mode (see*1) Mirroring Board or Main Controller PCB 2.
2. When the trouble is not recovered,
replace the HDD1.
HDD2 in trouble 1. Check the connection between HDD2 and
Mirroring Board or Main Controller PCB 2.
2. When the trouble is not recovered,
replace HDD2.
Rebuild mode Copying data to HDD1 Copying (under Rebuild)
(Rebuild)
Copying Data to HDD2 Copying (under Rebuild)
(Rebuild)
Halt mode Both HDDs in trouble 1. Check Master HDD and Backup HDD (see
*2)
2. When the trouble is not recovered,
replace the two HDDs (format the
replaced HDD and download the system
software).
---: Not lit A: Lit B: Blinking at an interval of 0.5 seconds
*1: This mode shows the message, "Need to replace hard disks (contact your service
engineer)", on the control panel. In addition, "310006" is indicated in CODE field of Alarm Log
in service mode (COPIER > DISPLAY > ALARM-2).
*2: Never install the HDD used in the other model. The used HDD holds the ID specific to
the firstly-installed machine, thus this machine is unable to recognize it. If done, you need to
reinstall the HDD recognized in this machine.
2 Technology > Main Controller > Controls > HDD mirroring feature (option)
HDD1 HDD2
(ChA) (ChB)
Action for Recovery
Red Red
LED LED
--- ---
A ---
--- A
B ---
--- B
A A
T-2-15
● Points to Note in Servicing concerning Mirroring Functionality
1. The modes other than Mirror Mode indicate troubles, which require swift recovery.
The power can be turned OFF even during Rebuild process. However, it is recommended
not to turn off the power and wait until the mode flows to Mirror Mode. In addition, HDD
removal after power-OFF is guaranteed only in Mirror Mode.
2. The mirroring board controls Master HDD and Backup HDD. This control is performed
based on the HDD serial number and the model serial number instead of slot locations.
If HDDs are replaced in a careless manner during servicing in the field, the Master and
Backup HDDs may be switched.
Ex) When the master HDD is in trouble, the mirroring board automatically recognizes
the backup HDD as the master. Thus, the master and backup HDDs are switched
even without changing the slot locations.
If the Master HDD cannot be located, turn OFF/ ON the power to check on which channel
the green LED is lit on the LED PCB.
The firstly-blinked LED (ChA or ChB) shows the Master HDD, which is accessed firstly after
power-on.
3. For users who intend to use the removable and mirroring functionality concurrently, instruct
them not to change the removable HDD location in advance.
Change of HDD locations after power-OFF is allowed as specifications only in Mirror Mode.
Otherwise, HDD removal or change of location is not guaranteed.
4. The following conditions are required to replace HDDs at power-ON.
• Removable HDD is extended
• Either HDD is in trouble
5. Upgrading should be done only in Mirror Mode while mirroring in ongoing. Upgrading in
Degrade or Rebuild mode is basically prohibited. Always prioritize Mirror Mode when you
take any actions.
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