Pioneer CDJ-900 Service Manual page 54

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A
When CD-R/RW is used
1 A file to update is copied to CD-R/RW.
(One files will be copied if it is one pieces. Two files will be copied if it is two pieces. ......)
2 Please turn on a power supply, pushing both the buttons of MEDIA SELECT/DISC and RELOOP.
(Please continue pushing until "Pioneer LOGO" screen disappears.)
Insert CD-ROM, if the message "Insert CD-ROM disc" is displayed.
3 The rest is the same as that of the case where USB memory is used.
B
Recovery when failing
When update of each CPU goes wrong and the power supply has been turned off on the way, subsequent normal operation
becomes impossible. In this case, the recovery (emergency) mode which only updates operates.
In addition, please carry out by USB memory in recovery. CD-ROM cannot be used.
1 Failure of a MAIN
When the message of "MAIN firmware update failed." is displayed or the power supply has been turned off on the way, if a
power supply is returned on again, the error code of "E-7024: MAIN CPU ERROR" will be displayed.
In this case, update will be possible if it usually carries out again using a passage MEDIA SELECT/USB button and
C
RELOOP button.
In addition, only MAIN is updated even if files other than MAIN are in USB memory.
If the unit cannot be recovered after a retrial of downloading, a part may be defective. Replace the whole MAIN Assy.
(This is because provision of a FLASH ROM in which a specific MAC address has been written is not possible.
For details, see section"1.2 NOTES ON FLASH ROM").
2 Failure of a GUI
When the message of "GUI firmware update failed." is displayed or the power supply has been turned off on the way, if a
power supply is returned on again, the error code of "E-7023: GUI CPU ERROR" will be displayed.
In this case, update will be possible if it usually carries out again using a passage MEDIA SELECT/USB button and
RELOOP button.
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In addition, if files other than GUI are contained in USB memory, it will usually pass and all they will be updated.
If the unit cannot be recovered after a retrial of downloading, a part may be defective. Replace the IC4002 (GUI CPU).
3 Failure of a PANEL
When the message of "PANEL firmware update failed." is displayed or the power supply has been turned off on the way, if
a power supply is returned on again, the error code of "E-7022: PANEL CPU ERROR" will be displayed.
In this case, how to the update mode to enter differs from usual.
Please continue pushing a button 10 seconds or more until it turns on a power supply and the message of "Connect a USB
storage device to the USB port." is displayed, pushing only a USB-STOP button.
In addition, if files other than PANEL are contained in USB memory, it will usually pass and all they will be updated.
If the unit cannot be recovered after a retrial of downloading, a part may be defective. Replace the IC8005 (PANEL CPU).
E
4 Failure of a DRIVE
When the message of "DRIVE firmware update failed." is displayed or the power supply has been turned off on the way, if a
power supply is returned on again, the error code of "E-7001: DISC DRIVE ERROR" will be displayed.
In such a case, the unit cannot be recovered by a retrial of downloading. Replacement of IC7006 (FLASH ROM) is required.
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