DFD6361-Maintenance - 第293页
D-8 Handling touch panel pr oblems (C ontinued) Proble m Cause W hat and how t o c heck Judgment Re medy Maintenanc e personnel lev el Hazard level Measuring instrume nts, tools or replacement parts Protective gear The t…
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
D-8
Handling touch panel 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 touch
panel image is
abnormal.
The image
brightness is not
adjusted
properly.
Check the intensity of
the back light of the
touch panel.
The brightness can
be adjusted by
controlling the
back light.
Contact your
nearest
DISCO
office.
DISCO
engineer
The CCD
camera or touch
panel is
defective or its
cable is broken.
Check the cable between
the CCD camera and
ALU board as well as
between the touch panel
and ALU board.
If the image is
abnormal even
when the cable is
properly
connected, the
cable may be
broken or CCD
camera or touch
panel is defective.
Contact your
nearest
DISCO
office.
DISCO
engineer
Digital tester
The PC or ALU
board is
defective.
Contact your
nearest
DISCO
office.
DISCO
engineer
Power circuit is
faulty.
Contact your
nearest
DISCO
office.
DISCO
engineer
D-9
Handling touch panel problems (Continued)
The touch panel of the machine is the liquid crystal display (LCD). You may encounter the following phenomenon which seems
to be a fault. Please take note that they are not faults but the optical characteristics of the liquid crystal materials.
Problem Cause What and how to check Judgment Remedy
Maintenance
personnel level
Hazard
level
Measuring
instruments, tools or
replacement parts
Protective
gear
Unevenness of
screen image
LCD
characteristics
-
Not fault
-----
There are bright
spots and dark
spots.
LCD
characteristics
-
Not fault
-----