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5.3. Dithering image
Check and make sure that the installation support is secure and
reliable.
5.4. Dim image
Check and make sure that video cables are reliably connected and
go to authorized maintenance point for maintenance in case of any
damage.
5.5. Repair and maintenance
·
Definitions and categories of return and repair products,
classification of return machine shall be subject to judgment of
professionals of the Company.
1) Replacement type:
New machines: for quality problems found upon case opening or
found on the shelf within the value insurance period before products
are sold; machines with batch quality problems: return products with
batch quality problems.
2) Repair type:
·
Damaged machine, refers to return products with faults, which
cannot be used properly and require maintenance.
·
Self-damaged machines: machines overhauled by the user
within the warranty period which causes artificial damage;
Products subject to suspended production, elimination, special
price, and products sold at reduced prices: machines beyond the
warranty period or self-damaged caused by overhaul by the user himself.
