Special Mode; Special Modes For Servicing - Canon iPF8000 series Service Manual

Chapter 7

7.2 Special Mode

7.2.1 Special Modes for Servicing

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This printer supports the following special modes in addition to the service mode:
- PCB replacement mode
- Download mode
1. PCB replacement mode
This mode is used when replacing the main PCB or MC relay PCB.
By executing this mode,
- Backup data of the settings and counter values stored in the MC relay PCB are moved to the new main PCB.
- The data such as the settings and counter values are copied to the MC relay PCB.
a) Entering the PCB replacement mode
Follow the same procedure as that for entering the service mode.
(With the [Load] key and [Navigate] key pressed down, turn on the [Power] key.)
When the printer starts up, compare the serial number memorized in the main PCB's EEPROM with that memorized in the MC relay PCB's EEPROM. If they do
not match, or no serial number is memorized in either EEPROM, enter the PCB replacement mode.
b) Procedure
Select "CPU BOARD" or "MC BOARD" using the and keys, and then press the [OK] key to determine it.
- CPU BOARD
Select this after replacing the main PCB.
The data in the MC relay PCB is copied to the main PCB.
- MC BOARD
Select this before replacing the MC relay PCB.
The data in the main controller PCB is copied to the MC relay PCB.
c) Exiting the PCB replacement mode
Turning off the [Power] key of the printer allows you to exit the PCB replacement mode.
For details on how to replace the PCB, see "Disassembly/Reassembly > Points to Note on Disassembly and Reassembly > PCBs".
2. Download mode
Use this mode only when updating the firmware without performing initialization.
a) Entering the download mode
1) Turning off the [Power] key of the printer.
2) With the [Stop] and [Navigate] keys pressed down, turn on the [Power] key of the printer.
* Keep pressing the above buttons until "Initializing" appears on the display.
b) Procedure
When "Download Mode/Send Firmware" is shown on the display, transfer the firmware.
When downloading of the firmware is completed, the printer is turned off automatically.
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