23
CDJ-3000
5
6
7
8
5
6
7
8
A
B
C
D
E
F
5.4 VOLTAGE
MONITORING
CIRCUIT
—
No.
Cause
Diagnostics Point
Item to be Confirmed
Corrective Action
Reference
1
AUTO STANDBY
is OFF
Confirm that AUTO STANDBY in UTILITY
setting is ON.
[7] EUP
[7-1] It cannot switch to the EUP mode
If the setting is turned OFF, the system will not
switch to EUP mode. Change the setting as
necessary.
—
2
PANEL CPU has
defect
Confirm that pin 35 of IC7202 (PANEL CPU)
is L.
If not confirmed, replace IC7202 (PANEL CPU).
—
No.
Cause
Diagnostics Point
Item to be Confirmed
Corrective Action
Reference
1
LAN circuit to
MAIN CPU have
defect
MAIN Assy
Confirm the below circuits.
1. From IC1801 (MAIN CPU) to
IC4001 (LAN-HUB)
2. From IC4001 (LAN-HUB) to
JA4001(LAN jack)
[6-4] It does not be recognized from the PC (LAN)
Repair defective solder and defective connections
if found.
—
2
MAIN CPU or
LAN-HUB have
defect
MAIN Assy
PNLB Assy
3
It has defective
connectors and
so on
Confirm that pin 10 of CN2 on SW POWER
SUPPLY is H.
If not confirmed, repair any poorly connected
connectors among SW POWER SUPPLY, MAIN
Assy and PNLB Assy if found.
—
Connector connection
4
SW POWER
SUPPLY has
defect
The problem has not improved until the above. Replace SW POWER SUPPLY.
—
SW POWER SUPPLY
No.
Cause
Diagnostics Point
Item to be Confirmed
Corrective Action
Reference
1
Each power
supply circuit
has defect
SOURCE indicator (Upper of TAG LIST,
PLAY LIST buttons) keeps blinking as the
power monitoring circuit detects a malfunction.
Refer to "5.4 VOLTAGE MONITORING
CIRCUIT" to confirm each circuit.
+
This state is kept until IC7202 (PANEL CPU)
is reset.
[8] Power supply monitoring
[8-1] Power supply monitoring
Search for defective power circuits, repair the
defective soldering and replace parts if found.
If the parts that are difficult to replace are
defective, the relevant Assy must be replaced.
Each Assy
PNLB Assy and
the peripheral Assy
No.
Cause
Diagnostics Point
Item to be Confirmed
Corrective Action
Reference
1
Button and Switch
have defect
Confirm that the buttons are working.
[7-2] It does not return from the EUP mode
If not confirmed, confirm the status of that button
or switch. If no problem, replace the switch.
—
2
PANEL CPU has
defect
Confirm that pin 35 of IC7202 (PANEL CPU)
change H according to the signal input of
the switch.
If not confirmed, replace IC7202 (PANEL CPU).
—
PNLB Assy
3
It has defective
connectors and
so on
Confirm that pin 10 of CN2 on SW POWER
SUPPLY is H.
If not confirmed, repair any poorly connected
connectors among SW POWER SUPPLY, MAIN
Assy and PNLB Assy if found.
—
Connector connection
4
SW POWER
SUPPLY has
defect
The problem has not improved until the above. Replace SW POWER SUPPLY.
—
SW POWER SUPPLY
The problem has not improved until the above. If not confirmed, confirm IC1801 (MAIN CPU),
IC4001 (LAN-HUB) and the peripheral circuit of
these parts and repair the defective soldering if
found. If not confirmed, replace MAIN Assy.
—