Pioneer DDJ-SX2 Service Manual page 32

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A
2. Check of drift of knobs and faders
Drift of all knobs and faders can be checked using Master level indicator during Measurement mode.
In order to select test subject, turn the Rotary selector clockwise or counterclockwise.
Then, lighting LED is moved whenever the Rotary selector is turned.
In order to start or reset observation of drift, press the Rotary selector.
[Use of this mode during repair]
• For failure judgment of the rotary VRs
As a guide, amplitude values higher than +4 or lower than -4 may be judged as failure.
The VRs can be set to any position during measurement. Possible symptoms are shown below.
• The volume changes arbitrarily.
B • Interrupted sound leakage occurs even if the volume is decreased to the minimum at the Master or Booth Monitor.
• The MIDI signal is output even if the corresponding VR is not operated.
• For operation check of a rotary VR after replacement
Figure-9 Relation between knob/fader and LED
Knobs and faders painted with light blue color are checkable.
Number in this figure means order of which select test subject.
1 1
C
D
8
9
E
F
32
1
2
5
6 7
2 3
4
10 10
21 21
14 14
38 38
15 15
2
3
11 11 22 22 28 28
12 13 12 13 23 24 23 24 29 30 29 30
16 16 20 20 27 27 33 33
17 17
18 18
19 19
DDJ-SX2
3
4
34 34 35 35 36 36
37 37
25 25
31 31
26 26 32 32 39 39
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