Sony NW-S4 Service Manual page 5

Operational description of Test mode
6
1. Audio Block Function Check
Clicking the UP or Down button in block 2 of the screen allows you to check with various output frequencies. Also, clicking the UP or
Down button in block 3 can check variations of volume. Clicking the L, Stereo, R, or Mute button in block 4 can change audio output
status.
2. Battery Threshold Value Check
Connect PC to this set with a USB cable, and the threshold values of battery residual capacity (voltage-converted values) written to the set
at the shipment are displayed in the block 5.
Check that the displayed values are same as listed in Table 1-3.
Table 1-3.
Condition
Voltage set value
Converted value (ref.)
3. LCD Test
Clicking FULL (full lit), COL1 (column 1), COL2 (column 2), or OFF (full off) in block 8 results in all ON, column 1 ON, column 2 ON,
or all OFF of the LCD on the set respectively.
4. CODEC Info Check
The CODEC programs and their versions written to the set can be checked. (block 9)
The CODEC programs written to the set at the shipment are "MP3", "ATRAC3", and "WMA" and their versions are as listed below.
(Versions will vary if updated)
Program No. Name
CODEC1 MP3
CODEC2 AT3
CODEC3 WMA
CODEC4 blank
qd
2
4
5
8
Capacity 1→OFF Capacity 2→1
1.00V
320
Version
106
106
106
0
3
Capacity 3→2
1.15V 1.25V
368 400
qa
9
0
qs
Capacity 4→3
1.35V
432
NW-S4
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