Pioneer CDJ-2000NXS2 Service Manual page 19

5
[3-2] Variable volumes not controllable
TEMPO slider not controllable
No. Cause Diagnostics Point
1 Defective SLDB Assy,
TEMPOslider PNLB Assy
2 Defective PANEL PNLB Assy
CPU
TOUCH/RELEASE control not controllable
No. Cause Diagnostics Point
1 Defective VOL PNLB Assy
2 Defective PANEL PNLB Assy
CPU
[3-3] The Rotary encoder does not work.
No response when the Rotary selector is operated
No. Cause Diagnostics Point
1 Loose connections LCDB Assy,
in the signal line PNLB Assy
or defective SW
2 Defective PANEL PNLB Assy
CPU
[3-4] Abnormalities regarding the Jog dial
Turning of the Jog dial is not detected
No. Cause Diagnostics Point
1 Defective photo JOGB Assy,
interrupter or JFLB Assy,
PANEL CPU PNLB Assy
2 Defective JOG section
Encoder plate
Pressing on the Jog dial cannot be detected.
No. Cause Diagnostics Point
1 Defective JOGB Assy,
Sheet SW JFLB Assy,
or PNLB Assy
PANEL CPU
2 Defective JOG section
SW ring
and
Holder
5
6
Item to be Checked
Check the waveform of signals on the
signal line (ADCT, ADIN).
If the symptom persists after the above
corrections.
Item to be Checked
Check the connections of and waveforms
of signals on the signal line (TCH/RELS).
If the symptom persists after the above
corrections.
Item to be Checked
Check the connections of the signal lines for
ENC_SW, ENC1, and ENC2. When the SW is
pressed, the ENC_SW signal must become L,
and when it is turned, the waveforms of the
signal lines for ENC1 and ENC2 must change.
If the symptom persists after the above
corrections.
Item to be Checked
Check the waveforms of the signal lines
(JOG1/JOG2).
Check if the Encoder plate has come off
Gear/A or is dirty.
Item to be Checked
Check the waveform of the signal on the
signal line (JOG_SW) when the Jog dial
is pressed.
Check if there is any foreign object
between the SW ring and Holder.
Check if the cushions that are adhered to
the Holder and SW ring have worn out.
CDJ-2000NXS2
6
7
Corrective Action
If the voltage on the signal line (ADIN) fluctuates
within the range of 0–3.3 V, with 1.65 V at the
center, go to Step 2. If it does not, the TEMPO
slider (VR8701) is defective. Replace it.
Check the connection of the PANEL CPU
(IC8001). If the connection is OK, the port may
be damaged. Replace it.
Corrective Action
If the voltage on the signal line (TCH/BRK and
RELS/ST) fluctuates within the range of 0–3.3 V,
go to Step 2. If it does not, the TOUCH/RELEASE
(VR8001/VR8002) are loosely connected or
defective. Connect them properly or replace them.
Check the connection of the PANEL CPU
(IC8001). If the connection is OK, the port may
be damaged. Replace it.
Corrective Action
The PANEL CPU (IC8001) and SW may be
loosely connected or they may be defective.
Reconnect them securely.
If the symptom persists, replace them.
Check the connection of the PANEL CPU
(IC8001). If the connection is OK, the port may
be damaged. Replace it.
Corrective Action
If no waveform can be confirmed, the photo
interrupter (PC9301) may be defective.
Replace it. If a waveform can be confirmed, the
signal line may be loosely connected or the
PANEL CPU (IC8001) may be defective.
Reconnect the signal line. If the symptom
persists, replace it.
If it has come off, adhere it at its original position.
If it is dirty, replace it with a new one.
Corrective Action
If the signal on the signal line (JOG_SW) is not
set to L when the Jog dial is pressed, the Sheet
SW may be defective. Replace it.
If the signal line is set to L, the signal line may be
loosely connected or the PANEL CPU (IC8001)
may be defective. Reconnect the signal line.
If the symptom persists, replace it.
Remove any foreign object, if present.
Replace the SW cushion with a new one.
7
8
A
Reference
—————
—————
Reference
B
—————
—————
Reference
C
—————
—————
Reference
D
10.27 WAVEFORMS
ab
—————
Reference
—————
E
—————
—————
F
19
8