Koden KGC-222, Руководство по обслуживанию

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KGC-222 Chapter 2 Maintenance and Troubleshooting
0093822202-01 2-1
Chapter 2 Maintenance and Troubleshooting
2.1 Inspection
The daily maintenance and inspection extends the life of equipment. To always keep the
equipment in the best condition, implement periodically the inspection shown in the table
below.
Item Content of Inspection
Connector at the rear of
Display unit
Check the looseness.
Wiring of cables Check the wiring of cables connecting the equipment and
the damage of cable.
Grounding of display unit Scrape the rust off the ground terminal and make its
contact well.
2.2 Cleaning
Display unit
Contamination on the screen may cause faint images. For cleaning the screen, wipe the
screen with soft and clean cloth dipped with diluted neutral detergent. Pay full attention as the
screen is easily getting scratched. No thinner shall be used.
For cleaning the housing, do not use a solvent such as thinner or alcohol. Painting on the
surface and characters at the operating portion may melt. After wiping with soft and clean
cloth dipped with diluted neutral detergent, wipe away with dry soft and clean cloth.
2.3 If you suspect a trouble
Symptom Possible cause of trouble Measure
Even with power on,
nothing is displayed.
•
Power connector may be
loose.
•
The power supply voltage is
out of specification (10.8 to
31.2 VDC).
•
Poor connection between
power cable and battery.
•
Defect of LCD display block.
•
Connect the connector securely.
•
Use a proper power as per
specification.
•
Check the connection between
power cable and battery.
•
Replace the main PCB
(D86-700*)
Heading bearing is
not displayed.
(---.-° is displayed)
•
Antenna Connection on the
back of display may be loose.
•
Antenna View may be blocked
by obstacles.
•
Connect the connector securely.
•
Change the installation position
of the Antenna.
Caution:
Do not use a solvent such as paint thinner, acetone, alcohol, and
benzene, etc.
Strong rubbing may cause bruising and scratching.
*Subject to version change