NW-E10, NW-E7 - Sony Audio Service Manual (repair manual). Page 4

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Preparation:
1. Make sure that no battery is loaded in the set.
2. Start up the test mode “appllo_service. exe” of the service tool (J-2507-037-1 ) from the PC, and check that the following screen
    appears.

3. Connect PC to this set with a USB cable. Check that the block 1 of the following screen “open”, and “1PC” is displayed on

the LCD of the set. (The block 1 will “close” if the set is disconnected again) At this time, a sine wave is outputted from the
headphone. Also, the model name is displayed in the block qd of the screen.

Note: If the block 1 does not “open”, the circuits in MAIN board will be faulty. Audio signals are outputted from

    the reference signal in  the DSP of the set.