Samyung SES2000, Руководство пользователя

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33
5.3 Checkpoints and Actions to be taken for Irregularities
Symptoms Checkpoints Actions
√
Shaky screen
√
White stripes on the
screen
√
Screen color changes
Check the LCD connectors'
contact Wash connector and boards
with
volatile cleaner
Check the contact status
of main board. Wash connector and board
with
volatile cleaner
√
Screen is not displayed at
power/on
√
Screen mode disappears
while operating
Check if the wiring insertion
between the mother board and
the power supply is in a poor
condition. Check the wiring insertion.
Check if acryl and LCD are
heavily covered ? Wash out the dirts
Check if the brightness control is
set
up too dark ? Adjust [Bright] /[System] in menu
√
Picture is dark
√
Picture is lazy
√
Picture is bright
Check if the brightness control
is set up too bright ? Adjust [Bright] /[System] in menu
Check if the data form input is
properly set up ? Connect the data form
input
to external
unit properly.
√
External interface is
not working.
Signal is not made from external
interface terminal. (Multi Tester) Check the condition of the
data connector line is in a
good condition.
Check if it blinks temporarily when
the power LED ON is pressed. In case of current device
problem - Troubleshooting
Check if there is any dust or erosion
on the contact of FUSE and FUSE
holder. Replace FUSE and wash
out the FUSE holder
contact
Check if the wiring insertion
between the mother board and the
power supply is in a poor condition Work on the wiring insertion
√
Power is not turned on.
√
Power turns off while
operating
Check if power voltage maintains
above 12V~35V while operating Troubleshoot the battery
and AVR
√
Taking so long
until display on
Check each devices and
connectors
to CPU pcb
Check all devices &
connectors
to CPU pcb
√
Hardly measuring
by low GAIN
What if GAIN too low, STC too high
set ? Up GAIN, down STC
√
more bottom sea than one What if it is too low depth ?
Or too high GAIN set ? Adjust GAIN
√
Interference Noise Does it ground ?
Is it high GAIN ? Ground it
Adjust GAIN