26
CDJ-2000NXS
1
2
3
4
A
B
C
D
E
F
1
2
3
4
2
7/x6 signal error
—————
Check that the 7/x6 signal is L during
D
V
D playback.
Check the connections between IC7006 and
C
N
7001. If soldering is improper, resolder it.
—————
3
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
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
1
Defective
PA
N
EL CPU
P
N
LB Assy
Check that the signal from Pin 29 of the
PA
N
EL CPU (IC
8
003) changes from H to
L during mode shift.
The PA
N
EL CPU (IC
8
003) may be defective.
Check the soldering of the PA
N
EL CPU and its
periphery. If the soldering is OK, then replace it.
—————
2
Disconnection,
breakage, or
loose connection
of cables
SR
V
B Assy
Check that the signal from Pin 3 of the
C
N
7302 changes from L to H during mode
shift.
The signal line cable may be defective.
If it is loosely connected, securely connect it.
If it is broken, replace it.
—————
3
Defective SW
power
—————
—————
The SW power is defective. Replace it.
—————
3
Disconnection,
breakage, or
loose connection
of cables
SR
V
B Assy
Check that the signal from Pin 3 of the
C
N
7302 changes from H to L during mode
shift.
The signal line cable may be defective.
If it is loosely connected, securely connect it.
If it is broken, replace it.
—————
4
Defective SW
power
—————
—————
The SW power is defective. Replace it.
—————
Only a D
V
D cannot be played back
[10] EUP Mode
Shifting to EUP mode is not possible.
1
Defective key or
loose connection
of the signal line
P
N
LB Assy
its periphery
Check the connection of the
nonresponding key.
Check the connection of the signal line for the
nonresponding key. If the connection is proper,
replace the connected SW.
—————
2
Defective
PA
N
EL CPU
P
N
LB Assy
Check that the signal from Pin 29 of the
PA
N
EL CPU (IC
8
003) changes from L to
H during mode shift.
The PA
N
EL CPU (IC
8
003) may be defective.
Check the soldering of the PA
N
EL CPU and its
periphery. If the soldering is OK, then replace it.
—————
EUP mode cannot be exited.
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
N
ormal mode EUP mode
EUP_CO
N
T
L
H or open
PA
N
EL CPU (IC
8
003) Pin 29 H
L
CPU_EUP_CO
N
T X
L
Reference: Signal logic during EUP mode
X :
N
ot Concerned
Содержание CDJ-2000NXS
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Страница 124: ...124 CDJ 2000NXS 1 2 3 4 A B C D E F 1 2 3 4 A SIDE B CN7302 CN7009 CN7003 CN700 CN7301 CN7303 DNP2676 A A SRVB ASSY ...
Страница 125: ...125 CDJ 2000NXS 5 6 7 8 5 6 7 8 A B C D E F A SIDE B CN7004 CN7001 CN7005 ...