TQM1616
16
in
1
Mux-Scrambling
QAM
Modulator
User’s
Manual
20
Chapter
4
Troubleshooting
ISO9001
quality
assurance
system
has
been
approved
by
CQC
organization.
For
guarantee
the
products’
quality,
reliability
and
stability.
All
products
have
been
passed
the
testing
and
inspection
before
ship
out
factory.
The
testing
and
inspection
scheme
already
covers
all
the
Optical,
Electronic
and
Mechanical
criteria
which
have
been
published
by
.
To
prevent
potential
hazard,
please
strictly
follow
the
operation
conditions.
Prevention
Measure
Installing the device at the place in which environment temperature between 0 to 45 °C
Making sure good ventilation for the heat-sink on the rear panel and other heat-sink bores if
necessary
Checking the input AC voltage within the power supply working range and the connection is
correct before switching on device
Checking the RF output level varies within tolerant range if it is necessary
Checking all signal cables have been properly connected
Frequently switching on/off device is prohibited; the interval between every switching on/off
must greater than 10 seconds.
Conditions need to unplug power cord
Power cord or socket damaged.
Any liquid flowed into device.
Any stuff causes circuit short
Device in damp environment
Device was suffered from physical damage
Longtime idle.
After switching on and restoring to factory setting, device still cannot work properly.
Maintenance needed