Canon W8400 Series, Service Manual, Page: 46 / 224

Chapter 1
1-30
1.7.3.2 Firmware Confirmation
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Firmware has been downloaded to each of a System Controller and Engine Controller.
When replacing each board with the one with Service Parts, confirm that each firmware is the latest version. If it is not the latest version, please update it
to the latest version.
Reference:
For how to upgrade each board, please refer to TROUBLESHOOTING> Version Up .
1.7.3.3 Precautions Against Static Electricity
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Certain clothing may generate static electricity, causing an electrical charge to build up on your body. Such a charge can damage electrical devices.
To prevent this, discharge any static buildup by touching a grounded metal fitting before you start disassembling the printer.
1.7.3.4 Precautions for Disassembly/Reassembly
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The precautions for disassembly/Reassembly are described in DISASSEMBLY/REASSEMBLY.
1.7.3.5 Self-Diagnostic Feature
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The printer has a diagnostic feature which analyzes printer problems (which may occur).
The diagnostic results will be displayed on the display and indicated by a light.
For detailed information, see ERROR CODE.
1.7.3.6 Disposing of Lithium Battery
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Dispose of the lithium battery according to local regulations.
MEMO:
This printer has a lithium battery mounted on the engine controller. The lithium battery is not replaceable.