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3 Service Navigation
3.1. Service Information
This service manual contains technical information which will allow service personnel’s to understand and service this model.
Please place orders using the parts list and not the drawing reference numbers.
If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service
manual.
3.1.1. Firmware update
• Software Update through USB
Steps:
1. Power On the unit.
2. Go to USB selector.
3. Plug In USB (containing FW_IMAGE.BIN & FWUPDATE (disc image file)).
4. Display will show 'READING' (blink) → UPD 0% to 100%.
5. After Software Update complete, display will be as show [SUCCESS].
6. Plug out USB.
7. Power off unit (unplug AC cord).
8. Software Update Process Finish.
3.1.2. Special
• For first lot of this model, there is additional Mute circuit (refer to Fig.2-1) to the Main P.C.B. Assembly.
• This circuit is for improvement to the quality.
• This Service Manual will be described with the Mute circuit implemented in the Main P.C.B. Assembly.
Fig.2-1
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