Pioneer CDJ-2000NXS, Руководство по обслуживанию

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25
CDJ-2000NXS
5 6 7 8
5 6 7 8
A
B
C
D
E
F
1 Short-circuit pad Traverse mecha Check if the LD short-circuit pad is
short-circuited. If it is, open it. —————
4 I N SW signal
error
SR V B Assy Check the I N SW signal. (L at O N .) If the signal waveform is not proper, replace the
I
N SW Assy.
—————
5 MU1 signal error SR V B Assy Check that the MU1 signal becomes H
after loading is completed. DRI V ER IC (IC7001) and SODC (IC7006) may
be improperly soldered or defective.
Resolder them, if necessary. If the symptom
persists, replace SODC (IC7006).
—————
6 Improper
assembling Traverse mecha Check if the objective lens is dirty. Clean the lens. —————
9 ————— ————— If the symptom persists after the above
corrections. Replace the parts in the order of
(1) DRI
V ER IC (IC7001), (2) FEP (IC7002),
(3) SODC (IC7006), (4) SR V B Assy, then
(5) traverse mecha.
—————
2 7/x6 signal error ————— Check that the 7/x6 signal is H during
CD playback. Check the connections between IC7006 and
C
N 7001. If soldering is improper, resolder it.
—————
3 E,F signal error SR V B Assy Check the E, F signals (C N 7001). Check that the signals fluctuate with 2.2 V at the center.
If a DC signal is not output, check the V REF1. 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
C
N 7001–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) DRI
V ER IC (IC7001),
(3) SODC (IC7006), (4) SR V B Assy, then (5) traverse
mecha.
—————
7 A–F signal error SR V B Assy Check the A–F signals (C N 7001). Check that the signals fluctuate with 2.2 V at the center.
If a DC signal is not output, check the V REF1. 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
C
N 7001–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) DRI
V ER IC (IC7001),
(3) SODC (IC7006), (4) SR V B Assy, then (5) traverse
mecha.
—————
8 RF signal error SR V B Assy Check the RF signal (C N 7001). 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
C
N 7001 and IC7002. If soldering is improper, resolder it.
If soldering is OK, replace the parts in the order of
(1) FEP (IC7002), (2) DRI
V ER IC (IC7001), (3) SODC
(IC7006), (4) SR V B Assy, then (5) traverse mecha.
5.4 OPERATIO N AL
WA V EFORMS
1
4 RF signal error SR V B Assy Check the RF signal (C N 7001). 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
C
N 7001 and IC7002. If soldering is improper, resolder it.
If soldering is OK, replace the parts in the order of
(1) FEP (IC7002), (2) DRI
V ER IC (IC7001), (3) SODC
(IC7006), (4) SR V B Assy, then (5) traverse mecha.
5.4 OPERATIO N AL
WA V EFORMS
1
2 LD current SR V B Assy Check that the LD current is within the
specified range. If there is any error, replace the traverse mecha. 5.2 Failure Judgment
of the Pickup Assy
1 LD current SR V B Assy Check that the LD current is within the
specified range. If there is any error, replace the traverse mecha. 5.2 Failure Judgment
of the Pickup Assy
3 Power supply
error SR V B Assy Check the power voltages (12 V , 5 V ,
3.3 V , 1.5 V , V REF1, V REF2 and V HALF).
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. —————
[9-3] N o playback
N either a CD nor a D V D can be played back.
Only a CD cannot be played back
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
8 Signal error SR V B Assy Check that a sine-wave signal is input to
Pins 29 and 30 of IC7001. The IC7001 may be loosely connected or defective.
Resolder them, if necessary. If the symptom persists,
replace SODC (IC7006). 5.4 OPERATIO N AL
WA V EFORMS
5 7 8
9 Defective
traverse mecha ————— If the symptom persists after the above
corrections. Replace the parts in the order of (1) DRI V ER IC
(IC7001), (2) SR V A Assy, then (3) traverse mecha.
—————