Pioneer CDJ-2000NXS2 Service Manual page 20

1
Noise is heard when the Jog dial is turned.
A
No. Cause Diagnostics Point
1 Defective JOG section
JFLB Assy
or
gears
The Jog dial turns too freely. (The load value for the Jog dial is outside the specified range.)
No. Cause Diagnostics Point
B
1 Improper adjust- JOG section
ment
or assembly
of the Jog dial
Resistance to turning the Jog dial is too strong. (The load value for the Jog dial is outside the specified range.)
No. Cause Diagnostics Point
1 Improper adjust- JOG section
C
ment of the Jog
dial or defective
washer, gear, or
cam plate
[3-5] The touch panel is inoperable
The touch panel is unresponsive to operations.
No. Cause Diagnostics Point
D
1 Poor calibration —————
2 Loose LCDB Assy
connections
3 Defective PNLB Assy
PANEL CPU
4 Defective LCDB Assy
Touch panel
E
[4] USB (Type A/Type B), SD card
[4-1] No communication via the USB connector (Type A)
Check the following, with a USB device connected to the USB A connector.
No. Cause Diagnostics Point
1 Loose connections Between USBB Assy
in the communi-
and MAIN Assy
cation line.
F
2 V+5_USB MAIN Assy
is defective.
20
1
2
Item to be Checked
Check if the Jog FL of the JFLB Assy has
been shifted upward from the holder.
There may be any scratches on the 3
gears or some foreign object between
the gears.
Item to be Checked
Check that the load value for the Jog dial
is within the specified range, referring to
"Measuring method" in "8.4 JOG DIAL
ROTATION LOAD ADJUSTMENT."
Item to be Checked
Check that the load value for the Jog dial
is within the specified range, referring to
"Measuring method" in "8.4 JOG DIAL
ROTATION LOAD ADJUSTMENT."
Item to be Checked
Check if position gap is a cause of
unresponsiveness of the keys on the
touch panel.
Check that the FFC from the touch panel
is securely connected to CN4401.
Check the touch panel input signal
(Pins 84 and 85 of IC8001) at the
PANEL CPU (IC8001).
Check the touch panel control signal
(Pins 1–4 of CN4401).
Item to be Checked
Check the connection of the USB
communication line.
Check V+5_USB of the USB power supply. If V+5_USB can be confirmed, go to 5.
CDJ-2000NXS2
2
3
Corrective Action
The Jog FL may interfere with Jog Dial A Assy.
Replace the JFLB Assy.
If there are any scratches, replace the scratched
gear with a new one. If there is any foreign object,
remove it then replace the gears with new ones.
After that, check that the Jog adjustment value is
within the reference range, referring to "8.4 JOG
DIAL ROTATION LOAD ADJUSTMENT."
Corrective Action
If it is outside the specified range, adjust the position
of the Adjust plate to change the load value for the
Jog dial, referring to "How to Adjust" in "8.4 JOG DIAL
ROTATION LOAD ADJUSTMENT."
During the above adjustment, if the upper-limit
adjustment position of the Adjust plate is reached,
oil mayhave been spattered on the Adjust Plate.
Replace the washer, gear, and smoother with new
ones, then reassemble. After replacement, adjust
the position of the Adjust Plate to change the load
value for the Jog dial.
Corrective Action
If it is outside the specified range, adjust the position
of the Adjust plate to change the load value for the
Jog dial, referring to "How to Adjust" in "8.4 JOG DIAL
ROTATION LOAD ADJUSTMENT."
During the above adjustment, if the lower-limit
adjustment position of the Adjust plate is reached,
shavings from the worn-out washer may have
increased the friction. Replace the washer, gear,
and smoother with new ones, then reassemble.
After replacement, adjust the position of the Adjust
plate to change the load value for the Jog dial.
Corrective Action
Perform calibration.
Fully insert the FFC from the touch panel at
a right angle to CN4401 then securely lock it.
If the waveform is abnormal, go to 4.
If the waveform is OK, the PANEL CPU (IC8001)
may be in failure. Replace it.
Check operations of the circuits between IC8001
and CN4401 to identify the part in failure, then
repair or replace the part in question. If there is
no problem with those circuits, the touch panel
itself is in failure. Replace it.
Corrective Action
If connection is improper, resolder it.
If connection is proper, go to 2.
If V+5_USB cannot be confirmed and
V+5_USB_D can be confirmed, go to 3.
If V+5_USB_D cannot be confirmed, go to 4.
3
4
Reference
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Reference
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Reference
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Reference
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10.27 WAVEFORMS
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Note: The reference
waveforms are those to
be indicated when the
center of the screen or
its periphery is touched.
Reference
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4