69
DJM-850-K
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A
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a
Mode 11 : AD values of the fader test. "FDR AD"
An amplitude value in the range of ±1 to ±7 with regard to the
V
R value at the beginning of measurement is displayed.
For a value greater than +7 or less than -7, all the 7 segments are lit.
[Use of this mode during repair]
• For failure judgment of the faders
As a guide, amplitude values higher than +4 or lower than -4 may be judged as failure.
The
V
Rs can be set to any position during measurement. Possible symptoms are shown below.
• The volume changes arbitrarily.
• Interrupted sound leakage occurs even if the volume is decreased to the minimum at the fader.
• The MIDI signal is output even if the corresponding
V
R is not operated.
• For operation check of a fader after replacement
• Mode for displaying the AD values of the faders on the FL display for confirmation
W
hen this mode is entered, “FDR AD” is displayed at the top of the FL display and the TAP key lights.
• Mode 11 consists of 5 pages for indicating the values of 5 faders.
The pages can be changed by pressing the BEAT
c
,
d
button.
W
hen the groups are switched, the name of the
V
R at the top of the group list is displayed at the bottom of the FL display
and its AD value is displayed in the middle.
• The maximum amplitude value among AD conversion values for a fader being tested can be confirmed on each page of
this mode. The value is expressed with the number of segments lit at the bottom of the FL display. The measurement
procedure is as indicated below.
Set the fader you wish to test to a desired position then press the EFFECT CUE key to start measurement. To reset, press
the EFFECT CUE key again. During measurement, the maximum amplitude value will be continuously displayed.
The EFFECT CUE key is lit during measurement and goes dark when reset.
Details on the amplitude value display are shown in the figures below.
Faders that can be confirmed
Amplitude
value
AD value
(in hexadecimal
notation)
Fader name
Fader to be tested
FL Display Name
Remarks
CH1 Channel Fader
CH1
"0": 000
"10": 3FF
CH2 Channel Fader
CH2
"0": 000
"10": 3FF
CH3 Channel Fader
CH3
"0": 000
"10": 3FF
CH4 Channel Fader
CH4
"0": 000
"10": 3FF
Cross Fader
CROSS
"A": 000
"B": 3FF
BEAT
d
button
BEAT
d
button
BEAT
c
button
BEAT
d
button
BEAT
c
button
BEAT
d
button
BEAT
c
button
BEAT
c
button