Pioneer CDJ-2000 Service Manual page 37

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
Traverse
1 Short-circuit pad
mechanism
2 LD current SRVA Assy
The spindle motor does not rotate.
No. Cause Diagnostics Point
Missing or Loading
1
defective part mechanism
Power supply
2 SRVA Assy
error
3 MU1 signal error SRVA Assy
SPDLEC signal
4 SRVA Assy
error
SPIN1 signal
5 SRVA Assy
error
6 -
In-focus not possible
No. Cause Diagnostics Point
Traverse
1 Short-circuit pad
mechanism
2 LD current SRVA Assy
Power supply
3 SRVA Assy
error
4 MU1 signal error SRVA Assy
SPDLFG signal
5 SRVA Assy
error
6 FEDRV signal SRVA Assy
error
7 FE signal error SRVA 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-2000
6
7
Corrective Action
If it is, open it.
If there is any error, replace the traverse mechanism.
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) SRVA Assy, then (4) 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.
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) SRVA Assy,
then (5) traverse mechanism.
7
8
A
Reference
-
5.2 Failure Judgment
of the Pickup ASSY
Reference
B
10.1 SRVA
ASSY (1/2)
10.1 SRVA
ASSY (1/2)
5.4 Operational
Waveforms
10.1 SRVA
C
ASSY (1/2)
5.4 Operational
Waveforms
-
Reference
5.2 Failure Judgment
of the Pickup ASSY
D
10.1 SRVA
ASSY (1/2)
10.1 SRVA
ASSY (1/2)
5.4 Operational
Waveforms
10.1 SRVA
E
ASSY (1/2)
5.4 Operational
Waveforms
10.1 SRVA
ASSY (1/2)
5.4 Operational
Waveforms
F
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