Pioneer CDJ-2000, Service Manual

Page: 34 / 166

34
CDJ-2000
1 2 3 4
A
B
C
D
E
F
1 2 3 4
[8] CONTROL
[8-1] Improper fader operation after fader start
[9] DRIVE ASSY
[9-1] Improper operation of the loading mechanism
[9-2] The stepper does not work.
10.6
JACB ASSY
10.1 SR V A
ASSY (1/2)
5.4 Operational
Waveforms
10.1 SR V A
ASSY (1/2)
5.4 Operational
Waveforms
10.1 SR V A
ASSY (1/2)
10.1 SR V A
ASSY (1/2)
10.1 SR V A
ASSY (1/2)
10.4 MAI N
ASSY (2/3)
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
1
Loose connections
in the signal line.
JACB Assy
Check the waveforms of the control signals
(CO
N T1, CO N T2) from the C N 9401 on the
JACB Assy.
If the signal cannot be recognized, the JACB Assy
may be defective. Check the soldering at the JACB
Assy then resolder it, if necessary.
If the signal can be recognized, go to Step 2.
2
Defective
MAI
N CPU
MAI N Assy
Check the waveforms of the control signals
(CO
N T01, CO N T02) from the MAI N Assy.
If the input signal can be recognized, then the MAI N
CPU (IC101) may be defective. Replace it. If the input
signal cannot be recognized, the communication line
or the peripheral devices may be loosely connected.
Resolder the terminals.
N o loading
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
1
Missing or
defective part Loading
mechanism
Loading
mechanism
Loading
mechanism
Loading
mechanism
Check that there is no part missing or
defective.
If there is, install the missing part or replace the
defective part.
2
Loose connections
in the signal line. Check that the LP switch has been
mounted.
If soldering is improper, resolder it.
3
Improper
assembling Check that the lever is engaged with the
LP switch.
Engage the lever with the LP switch.
4
Improper
soldering Check that the wires from the loading
motor have been properly soldered.
If they are not soldered, solder them.
5
Power supply
error
SR V A Assy
Check the power voltages (12 V , 5 V ,
3.3 V , and 1.5 V ).
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.
6
LPS1 and LPS2
signal errors
SR V A Assy
Check the waveforms of the LPS1 and LPS2
signal lines. (The LPS1 and LPS2 signals
becomes L when the SW is set to O
N .)
The loading detection SWs (S8901 and S8902) may
be improperly soldered or defective. Resolder them,
if necessary. If the symptom persists, replace them.
7
MUTE1 and
MUTE2 signal
errors
SR V A Assy
Check the waveforms of the MUTE1 and
MUTE2 signals. (During loading, the MUTE1
signal is L and the MUTE2 signal is H.)
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).
8
LOAD signal
error
SR V A Assy Check the LOAD signal.
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).
9
Defective SR V A
Assy
-
If the symptom persists after the above
corrections,
Replace the SR V A Assy.
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
1
The main unit is
positioned inclined.
Main unit Check if the main unit is positioned inclined. Place it on a level surface.
2
Improper
assembling Traverse
mechanism
Check if there is a missing or defective part
at the section where the main axis and
stepper contact.
If there is, install the missing part or replace the
defective part.
3
Improper
assembling Traverse
mechanism
Check the inside switch. Assemble the I N SW Assy properly.
4
Power supply
error
SR V A 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.
5
I N SW signal
error
SR V A Assy
Check the I N SW signal. (The I N SW
becomes L when the I N SW is set to O N .)
The FFC cables that connect the traverse mechanism,
SPC
N , and SR V A are loosely connected, or the I N SW
is defective. Reconnect them securely.
If the symptom persists, replace the I
N SW.
6 MU1 signal error SR V A 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).
7
Improper
assembling
Cables
Check that the FPC cable that connects the
traverse mechanism and the SR
V A Assy is
securely connected.
If it does not, securely connect it. If it is broken,
replace the traverse mechanism.