Canon imageCLASS X LBP1238, Service Manual

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■ Prerequisite
In order to perform version upgrade of the machine using a USB flash drive, the following conditions must be met.
There should be no other jobs being executed.
Firmware cannot be upgraded while there is a job being executed. If there is a job being executed, wait for completion of the
job and then perform the work.
■ Procedure for Upgrading the Firmware Using a USB Flash Drive
1. Store the firmware on a USB flash drive.
1. Decompress the firmware and open the "(Model name)_FirmID.rec" (Example: iRC1234_1235_FirmID.rec) in it by a
text editor or other program.
2. Create the folder with same name as the model name described in the "TGM" row of opened file at the root directory
of USB flash drive.
3. Store the decompressed firmware in this created folder.
2. Connect a USB flash drive where the firmware is stored to this machine.
3. Execute one of the following service modes.
• COPIER > FUNCTION > SYSTEM > DOWNLOAD
• COPIER > FUNCTION > SYSTEM > DL_FORCE
3. Technical Explanation (System)
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