PIONEER DJ AlphaTheta CDJ-3000 Service Manual page 20

1
[4-7] The Jog touch is not detected
A
No. Cause Diagnostics Point
1 Power supply MAIN Assy
circuit have
defect
2 JOGT circuit PNLB Assy
have defect
3 The sensor has Sensor (Sheet switch)
B
defect
4 COIL2 has defect COIL2 Assy
5 COIL drive circuit JLCD Assy
have defect
C
6 JLCD has defect JLCD Assy
[4-8] Turning the jog makes a strange noise
No. Cause Diagnostics Point
D
1 Jog brake has JOG section
defect
2 Jog roller has JOG section
defect
[4-9] Turning the jog is light
No. Cause Diagnostics Point
1 Jog adjustment JOG section
or Jog assembly
E
is incorrect
[4-10] Turning the jog is heavy
No. Cause Diagnostics Point
1 Poor Jog JOG section
adjustment
F
20
1
2
Item to be Confirmed
Confirm that V+12DEN is output.
Confirm that the signal is input to pin 2
(JOGT) of CN7206 when the jog is touched.
Confirm that Sensor is properly installed
and that Sensor is not dirty, damaged or
contaminated with water.
Confirm the circuit from Sensor to COIL2
Assy, and confirm that there is no defective
soldering on the parts of COIL2 Assy.
Confirm the peripheral circuits of COIL1 Assy
and JLCD Assy.
Confirm that the voltage of pin 2 (JOG_SW) of
CN7002 change the following state.
1. It changes to about 0.5 V when you stop
touching Jog
2. It changes to about 1.5 V when you touch Jog
Item to be Confirmed
Confirm that the brake (DED1189) is not
peeling.
Confirm that there are no foreign materials
on Roller (DXB2178) or that Roller (DXB2178)
is not deformed.
Item to be Confirmed
Refer to "8.4 JOG DIAL ROTATION LOAD
ADJUSTMENT" to confirm that the jog load
value is within the specification.
Item to be Confirmed
Refer to "8.4 JOG DIAL ROTATION LOAD
ADJUSTMENT" to confirm that the jog load
value is within the specification.
CDJ-3000
2
3
Corrective Action
If not confirmed, search for defective power
circuits, repair the defective soldering and replace
parts if found.
If confirmed, confirm that the signal reaches the
panel microcomputer. If not confirmed, confirm
the signal circuit. If the signal is reaching the pins
of PANEL CPU but the touch operation cannot be
detected, replace PANEL CPU.
If not confirmed, disassemble Jog Assy and move
on to the internal checking.
Install Sensor correctly. Replace Sensor if it has
dirt, damage, or moisture in it.
Repair defective solder and defective connections
if found.
- Repair the connection between COIL1 Assy and
JLCD Assy if there are connection defects.
- Repair the defective soldering on JLCD Assy, if found.
- If pin 5 of IC7002 (LDO) is not 3.3 V, replace IC7002.
- If pin 4 of IC7003 (LOGIC) is not 8 MHz, replace
X7001 (Resonator) or IC7003.
- If pin 8 of IC7004 (LOGIC) is not 2 MHz, replace
IC7004.
- If the gate of Q7003 (FET) is not 2 MHz, replace
IC7006 (LOGIC).
- If pin 2 of CN7003 is not Half-wave waveform of
2 MHz, replace Q7003 (FET).
If not confirmed, replace the parts in the order of
JLCD Assy, COIL2 Assy and COIL1 Assy.
Corrective Action
Wipe Jog dial (DNK6777) clean with ethanol.
Replace Brake.
Remove foreign materials or replace Roller.
Corrective Action
- If it is out of specification, refer to "8.4 JOG
DIAL ROTATION LOAD ADJUSTMENT" for
calibration. Wipe and reassemble Jog dial
(DNK6777) as necessary.
- Apply grease to the shaft if it is low in grease.
Corrective Action
If it is out of specification, refer to "8.4 JOG DIAL
ROTATION LOAD ADJUSTMENT" for calibration.
Wipe and reassemble Jog dial (DNK6777) as
necessary.
3
4
Reference
—
—
—
—
10.45 WAVEFORMS
4
—
Reference
—
—
Reference
8.4 JOG DIAL
ROTATION
LOAD
ADJUSTMENT
Reference
8.4 JOG DIAL
ROTATION
LOAD
ADJUSTMENT
4