18
CDJ-3000
1
2
3
4
A
B
C
D
E
F
1
2
3
4
1
Rotary Encoder
circuit have defect
ENCB Assy
Confirm the circuit of ENC0, ENC1 and KEY2. Repair the defective soldering and the defective
connection if found.
[4] Operation
[4-1] The rotary encoder is not working
No.
Cause
Diagnostics Point
Item to be Confirmed
Corrective Action
Reference
—
1
Defective soldering
Repair the defective soldering if found.
[3-2] Full-color LED does not turn on
No.
Cause
Diagnostics Point
Item to be Confirmed
Corrective Action
Reference
Confirm the soldering status of each LED.
And, confirm the peripheral circuit of IC7203
(RGB LED CONTROLLER).
Each Assy
—
—
—
1
Button has
defect
Each button
Confirm that the appropriate button presses
the appropriate switch.
If the switch is not pressed, replace the button.
[4-2] The button is not working
No.
Cause
Diagnostics Point
Item to be Confirmed
Corrective Action
Reference
—
2
SW POWER
SUPPLY has
defect
SW POWER SUPPLY Confirm that pin 5 (ever power output) of
CN2 on SW POWER SUPPLY is 12 V while
the power cord is plugged in.
If not confirmed, replace SW POWER SUPPLY.
—
4
Reset circuit
have defect
PNLB Assy
Confirm that pin 1 of IC7201 (Reset IC) on
PNLB Assy is H while the power cord is
plugged in.
If not confirmed, confirm the peripheral circuit of
IC7201 and repair the defective soldering if found.
If not confirmed, replace IC7201.
—
5
CLK signal of
PANEL CPU have
defect
PNLB Assy
Confirm that CLK signal of PANEL CPU is
normal.
(Pin 13 of IC8001 = 16 MHz)
If not confirmed, confirm X7200 or the associated
circuits and repair the defective soldering if found.
If not confirmed, replace X7200.
6
Switch circuit
have defect
Each Assy
Confirm the circuit from each switch to
IC7202 (PANEL CPU).
Repair defective solder, defective connections,
and the peeled patterns if found.
—
7
Switch has defect Each Assy
Confirm that the signal goes from H to L
when the switch is pressed.
If not confirmed, replace each switch.
—
8
PANEL CPU has
defect
PNLB Assy
The problem has not improved until the above. Replace IC7202 (PANEL CPU).
—
3
Power supply
circuit have
defect
MAIN Assy
Confirm that the voltage of V+3R3E (PANEL
CPU Power) is normal while the power cord is
plugged in.
If not confirmed, confirm the peripheral circuit of
IC1003 (DC/DC CONVERTER) and repair the
defective soldering if found. If not confirmed,
replace MAIN Assy.
—
—
2
LED has defect
If not confirmed, replace LED.
If not confirmed, replace IC7202 (PANEL CPU).
Confirm that the forward voltage of the LED
is about 2 V to 3 V.
Each Assy
10.45 WAVEFORMS
A
2
Rotary Encoder
has defect
ENCB Assy
Operate S6405 (Rotary Encoder) and confirm
that the following changes occur.
1. Turning it reverses the polarity of ENC0 and
ENC1
2. Pushing it changes the signal level of KEY2
If not confirmed, replace S6405 (Rotary Encoder). 10.45 WAVEFORMS
B
10.45 WAVEFORMS
C
3
PANEL CPU
has defect
PNLB Assy
The problem has not improved until the above. If not confirmed, replace IC7202 (PANEL CPU).
3
PANEL CPU
has defect
Confirm that the control signal (SDA, SCL) that
output from IC7202 (PANEL CPU) to IC7203
(RGB LED CONTROLLER) is normal.
PNLB Assy
If not confirmed, replace PNLB Assy.
4
LED Driver IC
has defect
Confirm that the control signal that output
from IC7203 (RGB LED CONTROLLER) to
each LED is normal.
PNLB Assy
