– Must be performed by a technician –
– Must be performed by a technician –
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Service
8B. Service
Test Mode
Troubleshooting
8B. Service
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In order to avoid electric shock, accident or injury to yourself or other people, be sure to turn off
the power switch before performing service work (such as repairs or correcting malfunctions).
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Sections of the projector remain at a high temperature and high voltage even after the power
switch is turned off. To avoid electric shock or burns, be very careful not to accidentally touch
these sections.
8B-1 Inspection and Service
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Perform periodic service. Failure to perform service may result in an accident.
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Perform the pre-operation inspection every day. This is required to prevent accidents. (See “7-1
Pre-operation Inspection” on page 25.)
8B-1-1 Points for Inspection
– Must be performed by a technician –
Periodically check the following inspection points for any abnormalities.
(1) Level Adjuster Inspection
•
Check that the level adjusters are fixed securely. (See “8A-1-1 (4) Level Adjuster Adjustment” on
page 63.)
(2) Projector Inspection
•
Check that images are projected properly from the projector.
•
Check that the projection range of the projector matches the screen position. (See “8B-6-2
Adjusting the Projector Position” on page 155.)
•
Check the projector installation and adjustment screws for loose screws. Fully retighten any loose
screws.
(3) Power Cord Plug Inspection
•
Check that the power cord plug is firmly inserted into the power supply input socket in the
machine’s cord box and an outlet.
•
Clean any dust or dirt from the connection parts.
•
Check for cracks or dirt on the power cord covering. If there is any abnormality on the power cord,
be sure to replace it.
(4) Screw Looseness Inspection
Check the following parts for loose screws. Fully retighten any loose screws.
•
Throttle lever assembly and control lever assembly fixing screws (See “8B-5-1 (6) Replacing and
Installing the Control Lever Assembly” on page 103.)
•
Lever grip A and lever grip B fixing screws (See “8B-5-1 (8) Replacing the Control Lever Switch
(Micro Switch)” on page 106.)