Service Manual
UPO1000X Series
Instruments.uni-trend.com
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Exterior Cleaning
Clean the exterior surfaces of the chassis with a dry lint-free cloth or a soft-bristle brush. If any dirt remains, use a
cloth or swab dipped in a 75% isopropyl alcohol solution. Use a swab to clean narrow spaces around controls and
connectors. Do not use abrasive compounds on any part of the chassis that may damage the chassis.
Clean the On/Standby switch using a cleaning towel dampened with deionized water. Do not spray or wet the switch
itself.
Caution
: Avoid the use of chemical cleaning agents which might damage the plastics used in this instrument.
Use only deionized water when cleaning the front-panel buttons. Use a 75% isopropyl alcohol solution as a
cleaner for cabinet parts. Before using any other type of cleaner, consult UNI-T Service Center or
representative.
Inspection - Exterior. Inspect the outside of the instrument for damage, wear, and missing parts. Immediately repair
defects that could cause personal injury or lead to further damage to the instrument.
Table 1
：
External Inspection Checklist
Item
Inspect for
Repair Action
Cabinet, front panel, and cover
Cracks, scratches, deformations,
damaged hardware.
Repair or replace defective module.
Front-panel knobs
Missing, damaged, or loose knobs
Repair or replace missing or defective
knobs.
Connectors
Broken shells, cracked insulation, and
deformed contacts.
Dirt in connectors.
Repair or replace defective modules.
Clear or brush out dirt.
Carrying handle and cabinet feet
Correct operation.
Repair or replace defective module.
Accessories
Missing items or parts of items, bent
pins, broken or frayed cables, and
damaged connectors.
Repair or replace damaged or missing
items, frayed cables, and defective
modules.
Screen Cleaning
Please use wet tissue or a soft cloth to wipe the dust from the screen and surface.
If the display screen is very dirty, please use a cloth to dipped in distilled water, 75% isopropyl alcohol solution or
glass cleaner to slightly wipe the sceen surface. Only use enough water to wet the cloth or to wipe. Avoid excessive
force, which may damage the display surface.
Caution
: Improper cleaner and cleaning way will cause damage to the screen.
Do not use abrasive cleaner or surface cleaner to clear the LCD.
Do not spray water on the LCD surface.
Do not excessive force to wipe the LCD.
Caution: To prevent moisture inside the instrument during external cleaning, do not spray any cleaning
solution onto the screen or instrument directly.
