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1. When USB device is connected, it is detected at the VBUS_OC 

terminal  of the MTK IC(IC1101 197pin).

2. When it is set to USB mode, the digital audio signal from the USB 

terminal is input to the MTK IC(IC1101).

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)

3. The MTK IC decodes the USB signal and outputs the signal to the 

AMP circuit in a same manner as  disc playback  signal output. (See 4-
1)

4. The musical signal taken in at the MTK IC(See 3-2) will be output to 

the USB device from the USB_DM terminal and USB_DP terminal of 
the MTK IC(IC1101 44-45pin) For this operation only MP3files can be

the MTK IC(IC1101 44-45pin). For this operation only MP3files can be 
transferred to USB device.

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Following  are the key excerpts from the Troubleshooting described in the 
Instruction Manual.

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1. The power is not turned on.

1. Make sure the AC power code is connected properly.

2. When connecting the AC power code into an outlet for the first time, the unit 

automatically enters to STANDBY mode Check the unit at this stage “DMEO”

automatically enters to STANDBY mode. Check the unit at this stage,  DMEO  
indication is shown on the display. If the unit dose not work, firstly check the 
status of the SYSTEM CONTROLLER(IC5002) to boot up, for voltage and clock 
generation and such.

3. Check if the VDR901 is not cut.

2. The System dose not work normally

1. Pull out the AC power code form the outlet and then reconnect after several 

minutes.

2. Perform the following steps to reset.

1. Press the power button to turn it on.

2. Press “PLAY”, “FUNCTION”, and POWER button at same time. “RESET” 

appears in the front panel display.

(Note)

•

When resetting, the [MEDIA], [INTERVAL], and [EFFECT] configuration setting 

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are initialized.

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1. There is no picture

1. Check if the video input of the TV is not set for other input purpose.

2. Check the output method of the unit.

2. There is no picture when you make an HDMI cable connection.

1. The unit may be connected to an input device which does not support  

HDCP(High-bandwidth Digital Content Protection). In this case, “HDMI” indication 
on the front panel dose not light up.

2 Change the setting as described on page 63 in the Instruction Manual Connect

2. Change the setting as described on page 63 in the Instruction Manual. Connect 

the unit to TV by an analog cable so that you can see the screen for the setting 
on the display.

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