Pioneer CDJ-2000NXS, Руководство по обслуживанию

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21
CDJ-2000NXS
5 6 7 8
5 6 7 8
A
B
C
D
E
F
[3-3] The N EEDLE SEARCH does not work.
1 Loose connections
in the communication
line CDCB Assy Check the connections of the peripheral
circuits of the CDC (IC5001). The communication line may be loosely
connected. Correct it if it is. —————
2 Defective CDC P N LB Assy Check that the signal from Pin 5 of C N8 003
changes when the N EEDLE SEARCH pad
is touched. (When the pad detects touching
by a finger, this signal is first output from
CDC to the PA
N EL CPU.)
The CDC (IC5001) may be defective.
Replace it. —————
3 Defective PA N EL
CPU
P N LB Assy If the symptom persists after the above
corrections. Check the connection of the PA N EL CPU
(IC 8 003). If the connection is OK, the port may
be damaged. Replace it.
—————
2 Defective PA N EL
CPU
P N LB Assy If the symptom persists after the above
corrections. Check the connection of the PA N EL CPU
(IC 8 003). If the connection is OK, the port may
be damaged. Replace it.
—————
N o response when the N EEDLE SEARCH is touched
[3-4] The rotary encoder does not work.
1 Loose connections
in the signal line
or defective SW TFTB Assy,
P
N LB Assy
Check the connections of the signal lines for
E
N C_SW, E N C1, and E N C2. When the SW is
pressed, the E N C_SW signal must become L,
and when it is turned, the waveforms of the
signal lines for E
N C1 and E N C2 must change.
The PA N EL CPU (IC 8 003) and SW may be
loosely connected or they may be defective.
Reconnect them securely.
If the symptom persists, replace them.
—————
1 Defective photo
interrupter or
PA
N EL CPU
JOGB Assy,
JFLB Assy,
C
N CT Assy,
P N LB Assy
Check the waveforms of the signal lines
(JOG1/JOG2). 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 PA
N EL CPU (IC 8 003) may
be defective. Reconnect the signal line.
If the symptom persists, replace it.
10.20 WA V EFORMS
a b
2 Defective
encoder plate JOG Assy Check if the encoder plate has come off
Gear A or is dirty. If it has come off, adhere it at its original position.
If it is dirty, replace it with a new one. —————
2 Defective
SW ring
and
JOG holder JOG Assy Check if there is any foreign object
between the SW ring and JOG holder. Remove any foreign object, if present. —————
Check if the cushions that are adhered to
the JOG holder and SW ring have worn
out. Replace the SW cushion with a new one. —————
N o response when the rotary encoder is operated
[3-5] Abnormalities regarding the JOG dial
Turning of the JOG dial is not detected
1 Defective photo
interrupter or
PA
N EL CPU
JOGB Assy,
JFLB Assy,
C
N CT Assy,
P N LB Assy
Check the waveform of the signal on the
signal line (JOG_SW) when the JOG dial
is pressed. 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 PA
N EL CPU (IC 8 003) may
be defective. Reconnect the signal line.
If the symptom persists, replace it.
—————
Pressing on the JOG dial cannot be detected.
1 Defective
JFLB Assy
or
gears JOG Assy Check if the JOG FL of the JFLB has
been shifted upward from the holder. The JOG FL may interfere with JOG A.
Replace the JFLB Assy. —————
There may be any scratches on the 3
gears or some foreign object between
the gears. 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 .3 JOG
DIAL ROTATIO N LOAD ADJUSTME N T.”
—————
N oise is heard when the JOG dial is turned.
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference