DFD6361-Maintenance - 第291页

D-6 1-3. POWE R Lamp (Power-On Lamp) P roblems Handling PO W ER lam p problems The causes, check points, judgment and remedies f or the POWER lamp problems are as describ ed below. Proble m Cause W hat and how t o c heck…

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D-5
Handling main power supply problems (Continued)
Problem Cause What and how to check Judgment Remedy
Maintenance
personnel level
Hazard
level
Measuring
instruments, tools or
replacement parts
Protective
gear
The power
does not turn
ON even when
the main switch
is rotated to the
START
position.
UPS is faulty or
its cable is
broken.
[Optional
accessory]
Turn OFF the facility
power supply and then
check the cable between
the machine and UPS.
If the power does
not turn ON even
when the cable is
properly
connected, the
cable may be
broken or UPS
may be defective.
Contact your
nearest
DISCO
office.
DISCO
engineer
Digital tester
The power
does not turn
ON even when
the main switch
is rotated to the
START
position.
Or the power
does not turn
OFF even
when the main
switch is
rotated to the
OFF position.
The main switch
is faulty.
Check the main switch
operationatAandB
contacts.
Switch status
If the main switch
status is different
from the table
shown in the left,
the main switch
may be defective.
Contact your
nearest
DISCO
office.
DISCO
engineer
Digital tester
The control
circuit is faulty.
Contact your
nearest
DISCO
office.
DISCO
engineer
OFF ON START
A contact
×× ο
Bcontact
×ο ο
Closed: ο Open: ×
D-6
1-3. POWER Lamp (Power-On Lamp) Problems
Handling POWER lamp problems
The causes, check points, judgment and remedies for the POWER lamp problems are as described below.
Problem Cause What and how to check Judgment Remedy
Maintenance
personnel level
Hazard
level
Measuring
instruments, tools or
replacement parts
Protective
gear
The POWER
lamp does not
light.
The POWER
lamp is defective
or its cable is
broken.
Check whether the DC
voltage of +24V is
supplied to the POWER
lamp when the machine
is turned ON.
If supplied, turn OFF the
facility power supply
and then check the cable.
The lamp may be
defective if it fails
to light even when
the power is
supplied.
If the power is not
supplied, the cable
may be broken.
Contact your
nearest
DISCO.
DISCO
engineer
Digital tester
D-7
1-4. Touch Panel Problems
Handling touch panel problems
The causes, check points, judgment and remedies for the touch panel problems are as described below.
Problem Cause What and how to check Judgment Remedy
Maintenance
personnel level
Hazard
level
Measuring
instruments, tools,
replacement parts
Protective
gear
The touch
panel does not
turn ON.
The touch panel
is faulty or the
cable is broken.
Check whether the DC
voltage of +12V is
supplied to the touch
panel when the machine
is turned ON.
If not, turn OFF the
facility power supply
and then check the cable.
If the touch panel
does not turn ON
even when the
power is properly
supplied, the
touch panel may
be defective.
If the power is not
supplied, the cable
may be broken
Contact your
nearest
DISCO
office.
DISCO
engineer
Digital tester