Pioneer CDJ-2000NXS Service Manual page 27

5
[11] SERVICE MODE
[11-1] The drive does not work during Test Operation mode.
The LD does not emit light.
No. Cause Diagnostics Point
1 Short-circuit pad Traverse mecha
2 LD current SRVB Assy
The spindle motor does not rotate.
No. Cause Diagnostics Point
1 Missing or Loading mecha
defective part
2 Power supply SRVB Assy
error
3 MU1 signal error SRVB Assy
4 SPDLEC signal SRVB Assy
error
5 SPIN1 signal SRVB Assy
error
6 ————— —————
In-focus not possible
No. Cause Diagnostics Point
1 Short-circuit pad Traverse mecha
2 LD current SRVB Assy
3 Power supply SRVB Assy
error
4 MU1 signal error SRVB Assy
5 SPDLEC signal SRVB Assy
error
6 FEDRV signal SRVB Assy
error
7 FE signal error SRVB Assy
8 ————— —————
5
6
Item to be Checked
Check if the LD short-circuit pad is
short-circuited.
Check that the LD current is within the
specified range.
Item to be Checked
Check that there is no part missing or
defective.
Check the power voltages (12 V, 5 V,
3.3 V, 1.5 V, VREF1, VREF2 and VHALF).
Check that the MU1 signal becomes H
after loading is completed.
Check that the SPDLEC signal is a PWM
signal with 1.65 V at the center.
Check that the SPIN1 signal to Pin 29 of IC7002
is 3.3 V when disc rotation is at full speed.
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 that the MU1 signal becomes H
after loading is completed.
Check the SPDLFG signal.
Check that the FEDRV signal fluctuates
with 1.65 V at the center.
Check that an S-shaped signal is output
when a waveform of the FE (FEDRV)
signal is rising after it drops down from
1.65 V.
If the symptom persists after the above
corrections.
CDJ-2000NXS
6
7
Corrective Action
If it is, open it.
If there is any error, replace the traverse mecha. 5.2 Failure Judgment
Corrective Action
If there is, install the missing part or replace the
defective part.
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.
DRIVER IC (IC7001) and SODC (IC7006) may
be improperly soldered or defective.
Resolder them, if necessary. If the symptom
persists, replace SODC (IC7006).
DRIVER IC (IC7001) and SODC (IC7006) may
be improperly soldered or defective.
Resolder them, if necessary. If the symptom
persists, replace SODC (IC7006).
If the signal is not input, check the soldering.
If the soldering is improper, resolder it.
Replace the parts in the order of
(1) DRIVER IC (IC7001), (2) SODC (IC7006),
(3) SRVB Assy, then (4) traverse mecha.
Corrective Action
If it is, open it.
If there is any error, replace the traverse mecha. 5.2 Failure Judgment
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.
DRIVER IC (IC7001) and SODC (IC7006) may
be improperly soldered or defective.
Resolder them, if necessary. If the symptom
persists, replace SODC (IC7006).
SPDLFG signal may be improperly solded and
SODC (IC7006) may be defective.
Resolder them, if necessary. If the symptom
persists, replace SODC (IC7006). If the symptom
persists, replace DRIVER IC (IC7001).
FEDRV signal may be improperly solded and
SODC (IC7006) may be defective.
Resolder them, if necessary. If the symptom
persists, replace SODC (IC7006). If the symptom
persists, replace FEP (IC7002).
FE signal may be improperly solded and SODC
(IC7006) may be defective.
Resolder them, if necessary. If the symptom
persists, replace SODC (IC7006). If the symptom
persists, replace FEP (IC7002).
Replace the parts in the order of
(1) FEP (IC7002), (2) SODC (IC7006),
(3) DRIVER IC (IC7001), (4) SRVB Assy,
then (5) traverse mecha.
7
8
A
Reference
—————
of the Pickup Assy
Reference
—————
B
—————
—————
5.4 OPERATIONAL
WAVEFORMS
4 9
5.4 OPERATIONAL
WAVEFORMS C
4
—————
Reference
—————
of the Pickup Assy
—————
D
—————
5.4 OPERATIONAL
WAVEFORMS
4 9
5.4 OPERATIONAL
WAVEFORMS
3 4 9
E
5.4 OPERATIONAL
WAVEFORMS
3 4 5 9
—————
F
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