Pioneer TRAKTOR PRO CDJ-350, Service Manual

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25
CDJ-350
5 6 7 8
5 6 7 8
A
B
C
D
E
F
[7] SERVICE MODE
[7-1] The measured error rate is outside the specified range in Player Operation mode.
1
Scratches or
dirt on the disc
DISC
First, whether the cause is attributable to the
disc or to the player must be distinguished.
Check if the recording surface of the disc is
dirty.
If it is clearly dirty, replace it with a CD of good
condition.
2
Scratches or
dirt on the disc
DISC
Measure the error rate, using the same disc
that produced the bad error rate but using
the addresses in a different area. If the error
rate measured in a different area is OK, the
CD is defective. If the error rate measured in a different area is OK,
the CD is defective. Replace the CD with one in good
condition.
If no error rate measured in various areas throughout
the entire surface of the CD is OK, go to [3].
3
Any foreign
matter attached Traverse
mechanism
Check if any foreign matter, such as
shavings, dirt, or dust, is attached to the
lens of the Pickup Assy.
Clean the lens.
4
Improper
assembly Traverse
mechanism
Check that the traverse mechanism has
been securely installed.
If it has not, reinstall it properly.
5
Improper
assembly Traverse
mechanism
Check that the loading mechanism Assy
has been securely installed.
If it has not, reinstall it properly.
6
Any foreign
matter attached Traverse
mechanism
Check for any foreign matter on the spindle
table.
Remove any foreign matter.
7
Any foreign
matter attached Traverse
mechanism
Check if any foreign matter is attached to
the magnet portion of the Pickup Assy.
Remove any foreign matter.
8 Signal errors MAI N Assy
Check that the waveforms of the RFO and
AGCRF signals form clear eye patterns.
If their waveforms are not of the same quality, check
the mounting status of the Servo IC (IC201).
If it is correctly mounted, then it may be defective.
Replace it.
10.11
WA
V EFORMS
MAI N
d
,
e
9 Defective pickup
Traverse
mechanism
If the symptom persists after the above
corrections,
See “5.3 Diagnosisi of the Pickup Assy” for details.
N o loading (There is an abnormal noise.)
1
Improper
assembling SLOTI N
MECHA Assy
Check if the SW lever has shifted on the
SWs on the SMLB Assy.
If the SW lever has shifted on the loading detection
SWs (S751/S752), correct the position of the SW
lever. If the soldered SWs are lifted off the board,
resolder them.
2 Signal errors MAI N Assy
Check the waveforms on the LPS1 and
LPS2 signal lines.
If the signal waveform is not proper, the loading
detection SWs (S751 and S752) may be improperly
soldered or defective. Resolder them, if necessary.
If the symptom persists, replace them.
[6-2] The stepper does not work.
1 Power failure MAI N Assy
Check the power voltages.
(
V +7R6M, V +5R6M, V REF1R65, V +3R3B,
V +3R3, V +1R2A)
Check the connection of the parts at the periphery of
the regulator IC that does not output the voltage.
If the symptom persists after a corrective action, the
power supply block is defective. Replace it.
4.3 POWER SUPPLY
BLOCK DIAGRAM
2 Signal errors MAI N Assy
Check the I N SIDE signal. (The I N SIDE SW
becomes "L" when the I N SIDE SW is set to
O N .)
If the signal is not proper, check the connections.
If connections are properly made, replace the
traverse mechanism.
[6-3] No CD playback
1
Any foreign
matter attached
CD drive Assy Check if the objective lens is dirty. Remove any dirt or dust from the lens.
2 Defective pickup MAI N Assy
Check the LD current value.
Measure the actuator resistance value.
Refer to the “5.3 Diagnosis of the Pickup Assy.”
5.3 Diagnosis of
the Pickup Assy
5.3 Diagnosis of
the Pickup Assy
3 — Service mode
If the symptom persists after the above
corrections, check operations of the CD
drive in Service mode.
Check operations of the CD drive, referring to the
procedures described in “6. SER
V ICE MODE.”
If the CD drive functions improperly,
see “[7] SER
V ICE MODE” in this section.
6. Service mode
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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