4
NW-S4
1
7
Work procedure
Preparation:
1. Make sure that no battery is loaded in the set.
2. Start up the test mode “
” of the service tool (
) 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
7
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.
Summary of Contents for NW-S4 - Network Walkman
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