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TROUBLESHOOTING FOR THE DIGITAL FUNCTION SECTION
Error Symptoms
The touch screen
does not work.
Check operation
of touch screen
Check power input of
touch screen controller
LED location: behind touch screen
controller of the monitor section
Is the touch screen
No
controller LED lighted?
screen controller input
Yes
voltage normal?
Does the LED go
out about 2 times
per second?
Yes
When touching
the screen, does the
lighted state or brightness
of the LED change
about twice per
second?
Yes
Is the Monitor
Joint section
No
connection normal?
(refer to I/O
structure)
Yes
Contents to check
Is the touch
No
(refer to I/O
structure)
Is the output voltage
Yes
of Sub Cont' CON1
normal? (DC5V)
No
No
- 125 -
Check Main Cont' power
No
Yes
Replace Touch Cont'
digital section, and, when
checking operation, if LED
After checking the connection
referring to the touch screen
and if it still does not work,
Measures
switch connector
and reconnect
Check Monitor Joint
Touch Connector
and reconnect
Reinitialize power of
goes out abnormally,
replace Touch Cont.
of the touch panel section,
if there are still issues after
reconnecting, replace
touch panel (refer to touch
connection diagram)
Check connection by
connection diagram
and reconnect
Reconnect Touch/Inv
in the Main Cont' section
replace Main Cont'
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