7
to bright
CH28
Ex4-Blue
0-255
External 4, Blue dimming, dark to
bright
Part 4, Troubleshooting
4.1 Troubleshooting list for some common electrical
problems may happen during use:
Phenomenon
Solution
* The fixture does not
work
* No light out
* Check main power fuse & power cable
connection
* Measure main voltage on the main connector
* No display
* Check connection of display PCB
* Replace a new display
* No responding to
DMX
controller
* Check working mode setting on display is DMX
mode or not
* Check whether the unit be set as SLAVE
* Check DMX address settings
* Check DMX cable and it’s connection
* Try to use another DMX console
* Signal error while use
DMX
* Check whether DMX cables be connected well or
not
* Check whether the DMX cable has to be
terminated with a terminator to reduce signal
errors. If not, please Solder a 120-ohm 1/4W
resistor between pin 2(DMX-) and pin 3(DMX+)
into a 3-pin XLR-plug and plug it in the
DMX-output of the last fixture
4.2 Checking steps about why LED lamp not light
(Example: Red led lamp not light)
Step 1: Disassemble lighting fixture and use multi-meter to measure input
voltage between R+/ R- on main PCB. There should have DC48V.
☆
If there no 48V voltage, please check the electro circuit and parts such as
CQ12, R39, R37, Q3 and etc.
☆
If there have 48V voltage, please go to step 2.
Step 2: Check voltage between R+ and R- on LED lamp PCB and it should be
48V.
☆
If there has voltage, but LED lamp not work, the reason may be LED lamp
