Trouble Shooting - Hisense HAIO136 User Manual

9

Trouble Shooting

Before preparing for repair, check according to the table below to see if you can find the cause of the
problem. If you strictly follow the instructions but still can't resolve the problem, you can turn to professional
servicemen for help.
• LED AII-IN-ONE Maintenance
The maintenance of LED display system mainly includes the maintenance of LED display system, com-
munication system and power system.
Precautions for LED display screen
Small pitch LED display screens are high-precision, high-density electronic products, which belongs to
precision protection products category. It needs special protections in daily use such as protections from
static electricity, dust, moisture and physical impact.
1. Static electricity
LED is an electroluminescence device, which is very sensitive to current. Human body carries static elec-
tricity which can break down the internal PN junction. Do not touch the LED display screen without wearing
gloves.
2. Dust
The LED display screen is designed according to the indoor IP3X standard, but it contains high-density
electronic circuit inside the box. So it is very important that the LED display screen is dust proof and clean it
regularly.
3. Water vapor and oil fume
LED beads surface can not be treated with water proofing due to its density and sizing, Moisture environ-
ment and water vapor can cause short circuit easily which may resulting product failure or even resulting fire
that may burnt the LED display screen in the worst case. Therefore, LED display screen needs protection
from water vapor and moisture.
obstructing
batteries
batteries
21
away.