Pioneer CDJ-2000 Service Manual page 32

1
A
The JOG dial turns too freely. (The load value for the JOG dial is outside the specified range.)
No. Cause Diagnostics Point
Improper adjust-
ment or assembly
1 JOG Assy
of the JOG dial
Resistance to turning the JOG dial is too strong. (The load value for the JOG dial is outside the specified range.)
B
No. Cause Diagnostics Point
Improper adjust-
ment of the JOG
dial or defective
1 JOG Assy
washer, gear, or
cam plate
The ADJ KNOB does not work or does not stop at the intended position.
C No. Cause Diagnostics Point
Improper adjust-
ment or assembly
1 JOG Assy
of the JOG dial
[4] USB (Type A/Type B), SD Card
[4-1] No communication via the USB connector (Type A)
Check the following, with a USB device connected to the USB A connector.
D
No. Cause Diagnostics Point
Loose connections Between
1
in the communica- USBA Assy and
tion line. MAIN Assy
V+5_USB_HOST_
2 MAIN Assy
VBUS is defective.
The USB PAWED
IC or its control
3 MAIN Assy
signal is defective.
E
Defective MAIN
4 MAIN Assy
CPU
[4-2] No communication via the USB connector (Type B)
Check the following, with a USB device connected to the USB B connector.
No. Cause Diagnostics Point
Loose connections
in the communica-
1 MAIN Assy
tion line.
Defective MAIN
2 MAIN Assy
CPU
Loose connections
F 3 MAIN Assy
in the USB signal.
Defective
4 MAIN Assy
USB CONTROLLER
32
1
2
Item to be Checked
Check that the load value for the JOG dial
is within the specified range, referring to
"Measuring method" in "8.1 JOG Dial
Rotation Load Adjustment."
Item to be Checked
Check that the load value for the JOG dial
is within the specified range, referring to
"Measuring method" in "8.1 JOG Dial
Rotation Load Adjustment."
Item to be Checked
Check if the plate spring of the JOG
HOLDER is worn out or deformed.
Check if there is any foreign object in the
link section (gears).
Item to be Checked
Check the connection of the USB
communication line.
Check V+5_USB_HOST_VBUS of the USB
power supply.
Check the CPU_USB_HSTPWREN and
CPU_USB_HSTPWRFL signals from the
USB POWER IC (IC1102).
If the symptom persists after the above
corrections,
Item to be Checked
Check the connections from the MAIN
CPU and USB CONTROLLER.
Check the signal from the MAIN CPU and
USB CONTROLLER.
Check the connections of the communica-
tion line (USB_D+, USB_D-).
If the symptom persists after the above
corrections,
CDJ-2000
2
3
Corrective Action
If it is outside the specified range, adjust the position
of the Adjust Plate to change the load value for the
JOG dial, referring to "How to Adjust" in "8.1 JOG
Dial Rotation Load Adjustment."
During the above adjustment, if the upper-limit adjust-
ment position of the Adjust Plate is reached, oil may
have been spattered on the Adjust Plate.
Replace the washer, gear, and cam plate with new
ones, then reassemble. After replacement, adjust
the position of the Adjust Plate to change the load
value for the JOG dial.
Corrective Action
If it is outside the specified range, adjust the position
of the Adjust Plate to change the load value for the
JOG dial, referring to "How to Adjust" in "8.1 JOG Dial
Rotation Load Adjustment."
During the above adjustment, if the lower-limit adjust-
ment position of the Adjust Plate is reached, shavings
from the worn-out washer may have increased the
friction. Replace the washer, gear, and cam plate with
new ones, then reassemble. After replacement, adjust
the position of the Adjust Plate to change the load
value for the JOG dial.
Corrective Action
Replace the JOG HOLDER.
After replacement, adjust the position of the Adjust
Plate to change the load value for the JOG dial.
Remove the foreign object. During reassembly, pay
attention to the position of the cam plate.
After replacement, adjust the position of the Adjust
Plate to change the load value for the JOG dial.
Corrective Action
If connection is improper, resolder it.
If connection is proper, go to 2.
If V+5_USB_HOST_VBUS cannot be confirmed, go to 3.
If V+5_USB_HOST_VBUS can be confirmed, go to 4.
If the CPU_USB_HSTPWREN signal does not become H,
check the connection. If the connection is OK, then the
MAIN CPU (IC101) is defective. Replace it.
If the CPU_USB_HSTPWRFL signal does not become H,
the USB POWER IC (IC1102) is in a state of shutdown
caused by abnormally high temperature.
Check the connection. If the connection is OK, then the
port may be damaged. Replace it.
The MAIN CPU (IC101) is defective. Replace it.
Corrective Action
If connection is improper, resolder it.
If connection is proper, go to 2.
If the signal is not output from the MAIN CPU(IC101),
it may be defective. Replace it.
The communication line may be loosely connected.
Correct it if it is.
The USB CONTROLLER (IC1101) is defective.
Replace it.
3
4
Reference
Reference
Reference
Reference
10.5 MAIN
ASSY (3/3)
10.5 MAIN
ASSY (3/3)
Reference
4