Pioneer CDJ-2000 Service Manual page 35

5
No. Cause Diagnostics Point
8 Signal error SRVA Assy
Defective traverse
9 -
mechanism
[9-3] No playback
Neither a CD nor a DVD can be played back.
No. Cause Diagnostics Point
Traverse
1 Short-circuit pad
mechanism
2 LD current SRVA Assy
Power supply
3 SRVA Assy
error
INSW signal
4 SRVA Assy
error
5 MU1 signal error SRVA Assy
Improper
Traverse
6
assembling
mechanism
7 A–F signal error SRVA Assy
8 RF signal error SRVA Assy
9 -
Only a CD cannot be played back
No. Cause Diagnostics Point
1 LD current SRVA Assy
2 7/x6 signal error -
3 E,F signal error SRVA Assy
4 RF signal error SRVA Assy
5
6
Item to be Checked Item to be Checked
Check that a sine-wave signal is input to
Pins 29 and 30 of IC7001.
If the symptom persists after the above
corrections,
Item to be Checked
Check if the LD short-circuit pad is
short-circuited.
Check that the LD current is within the
specified range.
Check the power voltages (12 V, 5 V,
3.3 V, 1.5 V, VREF1, VREF2 and VHALF).
Check the INSW signal. (L at ON.)
Check that the MU1 signal becomes H
after loading is completed.
Check if the objective lens is dirty.
Check the A–F signals (CN7001).
Check the RF signal (CN7001).
If the symptom persists after the above
corrections,
Item to be Checked
Check that the LD current is within the
specified range.
Check that the 7/x6 signal is H during
CD playback.
Check the E, F signals (CN7001).
Check the RF signal (CN7001).
CDJ-2000
6
7
Corrective Action
The IC7001 may be loosely connected or defective.
Resolder them, if necessary. If the symptom persists,
replace SODC (IC7006).
Replace the parts in the order of (1) DRIVER IC
(IC7001), (2) SRVA Assy, then (3) traverse mechanism.
Corrective Action
If it is, open it.
If there is any error, replace the traverse mechanism.
Check the connection of the parts at the periphery of
the power-supply IC that does not output the voltage.
If the symptom persists after a corrective action, the
power supply block is defective. Replace it.
If the signal waveform is not proper, replace the
INSW Assy.
DRIVER IC (IC7001) and SODC (IC7006) may
be improperly soldered or defective.
Resolder them, if necessary. If the symptom persists,
replace SODC (IC7006).
Clean the lens.
Check that the signals fluctuate with 2.2 V at the center.
If a DC signal is not output, check the VREF1. If a DC
signal is not output from it, replace the FEP (IC7002).
If an AC signal is not output, check the soldering at the
CN7001–IC7002 of the pickup. If soldering is improper,
resolder it. If soldering is OK, replace the parts in the
order of (1) FEP (IC7002), (2) DRIVER IC (IC7001),
(3) SODC (IC7006), (4) SRVA ASSY, then (5) traverse
mechanism.
Compare the waveform with the operational waveform
to check if its quality is low. Check if the disc is dirty or
scratched. Check the polarity of the 7/x6 signal. When it
is normal, Check the connections between pickup and
CN7001 and IC7002. If soldering is improper, resolder it.
If soldering is OK, replace the parts in the order of
(1) FEP (IC7002), (2) DRIVER IC (IC7001), (3) SODC
(IC7006), (4) SRVA Assy, then (5) traverse mechanism.
Replace the parts in the order of
(1) DRIVER IC (IC7001), (2) FEP (IC7002), (3) SODC
(IC7006), (4) SRVA Assy, then (5) traverse mechanism.
Corrective Action
If there is any error, replace the traverse mechanism.
Check the connections between IC7006 and CN7001.
If soldering is improper, resolder it.
Check that the signals fluctuate with 2.2 V at the center.
If a DC signal is not output, check the VREF1. If a DC
signal is not output from it, replace the FEP (IC7002).
If an AC signal is not output, check the soldering at the
CN7001–IC7002 of the pickup. If soldering is improper,
resolder it. If soldering is OK, replace the parts in the
order of (1) FEP (IC7002), (2) DRIVER IC (IC7001),
(3) SODC (IC7006), (4) SRVA Assy, then (5) traverse
mechanism.
Compare the waveform with the operational waveform
to check if its quality is low. Check if the disc is dirty or
scratched. Check the polarity of the 7/x6 signal. When it
is normal, Check the connections between pickup and
CN7001 and IC7002. If soldering is improper, resolder it.
If soldering is OK, replace the parts in the order of
(1) FEP (IC7002), (2) DRIVER IC (IC7001), (3) SODC
(IC7006), (4) SRVA Assy, then (5) traverse mechanism.
7
8
A
Reference
10.1 SRVA
ASSY (1/2)
5.4 Operational
Waveforms
Reference
B
5.2 Failure Judgment
of the Pickup ASSY
10.1 SRVA
ASSY (1/2)
10.1 SRVA
ASSY (1/2)
C
10.1 SRVA
ASSY (1/2)
10.1 SRVA
ASSY (1/2)
5.4 Operational
D
Waveforms
Reference
5.2 Failure Judgment
of the Pickup ASSY
10.1 SRVA
ASSY (1/2)
E
10.1 SRVA
ASSY (1/2)
10.1 SRVA
ASSY (1/2)
5.4 Operational
Waveforms
F
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