GTD GTD-L2080P User manual

LED Flood Light
GTD-L2080P
User’s Manual
Guangzhou GTD Culture & Technology Group Co.,Ltd.
Tel: [phone]
Fax: [phone]
http://www.gtd-lighting.com

GTD-L2080P User Manual
1
© 2019 GTD all rights reserved. Information, specifications, diagrams, images, and instructions herein are subject to change
without notice. GTD logo and identifying product names and numbers herein are trademarks of GTD. Copyright protection
claimed includes all forms and matters of copyrightable materials and information now allowed by statutory or judicial law
or hereinafter granted. Product names used in this document may be trademarks or registered trademarks of their
respective companies and are hereby acknowledged. All non-GTD brands and product names are trademarks or registered
trademarks of their respective companies.
GTD and all affiliated companies hereby disclaim any and all liabilities for property, equipment, building, and electrical
damages, injuries to any persons, and direct or indirect economic loss associated with the use or reliance of any information
contained within this document, and/or as a result of the improper, unsafe, insufficient and negligent assembly, installation,
rigging, and operation of this product.
Guangzhou GTD Culture & Technology Group Co.,Ltd. | 27 Fu Yuan Yi Road, Guangzhou 510805, P.R.China
[phone]| [phone] fax | www.gtd-lighting.com | [e-mail]

GTD-L2080P User Manual
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Contents
Safety instructions...................................................................................................................................................................... 3
General guidelines...................................................................................................................................................................... 4
Packing and shipping .................................................................................................................................................................. 5
Unpacking ....................................................................................................................................................................................... 5
Packing after use............................................................................................................................................................................. 5
Accessories................................................................................................................................................................................. 5
Product introduction .................................................................................................................................................................. 6
Installation ................................................................................................................................................................................. 6
Device installation .......................................................................................................................................................................... 6
Power / Control connection ....................................................................................................................................................... 7
Power connection........................................................................................................................................................................... 7
Control connection ......................................................................................................................................................................... 7
Testing ............................................................................................................................................................................................ 7
Control panel.............................................................................................................................................................................. 8
Menu structure .......................................................................................................................................................................... 9
DMX protocol........................................................................................................................................................................... 10
Technical specification ............................................................................................................................................................. 16
Cleaning and maintenance ....................................................................................................................................................... 18
Troubleshooting ....................................................................................................................................................................... 19
System wiring diagram ............................................................................................................................................................. 20
Spare parts list ......................................................................................................................................................................... 21
Appendix 1 ............................................................................................................................................................................... 21

GTD-L2080P User Manual
3
Safety instructions
WARNING!
Before using the fixture, read the latest version of the product user manual, paying particular
attention to the safety instructions. Please check www.gtd-lighting.com for the latest revision/update
of the user manual. The manufacture of this fixture, are not responsible for damages, resulting from
misuse of this fixture, due to the disregard of the information printed in this user manual.
DANGER!
Hazardous voltage. Risk of lethal or severe electric shock.
WARNING!
Burn hazard. Hot surface. Do not touch.
WARNING!
Fire hazard.
It’s essential that the fixture is properly grounded. Only qualified personnel should perform electrical
connections.
WARNING!
Wear protective eyewear. Never look directly into the light source.
Only qualified and certified personnel should perform installation of this fixture and only the original rigging parts
(brackets) included with this fixture should be used for installation.
Before applying power to the fixture, check that the source voltage matches the fixture's requirement. Every fixture
must be earthed (grounded) and installed in accordance with local electricity regulations. Do not connect it to a
dimmer system.
Never look directly into the light source of this fixture to prevent risk of injury to your retina, which may induce
blindness.

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General guidelines
Never open this fixture while in use.
The fixture should be kept clean. DO NOT operate the fixture in extreme heat or dusty environments. Avoid contact
with chemical liquid.
IP rating: IP65. It should be kept away from the high ambient or dusty environments. Don’t let the fixture contact
with chemical liquids.
Minimum distance to lighted objects must be 3.28feet (1m).
Maximum temp of the external surface 158˚F (70˚C).
Maximum ambient temperature 113˚F (45˚C).
Minimum distance of inflammable materials from the surface 1.6 feet (0.5m).
LED lamp should be changed if damaged or distorted in shape due to extreme heat.
Cover, lens or display screen with visible damages such as cracks or scratches must be replaced to ensure
performance of the fixture.
Disconnect the fixture from power before changing any parts or accessories.
Make sure that the installation area can hold a minimum point load of 10 times the weight of all installed fixtures,
clamps, cables, auxiliary equipment, etc. Check that the cover, clamps and locks are undamaged. Certified safety
cables must always be used when installing the fixture.
The fixture is only intended for installation, operation and maintenance by qualified professional. Instructions stated
in the manual must be complied.
The fixture must be kept in a well-ventilated place at least 50 cm away from any wall surface. Check if the fans or
ventilation openings are unblocked.
Broken or damaged cables can only be fixed or changed by certified technicians, certified local distributors or the
manufacturer to ensure operational safety.
Do not stick filters or other materials onto the lens. Do not modify the fixture or install other than GTD manufactured
parts.
For questions regarding safety operation, please contact our technical personnel or call the service hotline +8620
61808296.

GTD-L2080P User Manual
5
Packing and shipping
Unpacking
Notes
All products are quality controlled and checked for any faults before they are dispatched to customers. If the fixture is
damaged during delivery, the customer must notify the shipper and manufacturer to file a damage insurance claim.
Photographic evidence of the damage must be provided.
Flight-Case
Open the cover of the flight-case and remove the plastic packing bags. Hold the handles of the fixture firmly and take it out
carefully.
Cardboard box
Open the box and take out the whole set of packaging foam which contains both the fixture and its accessories. Remove the
foam from the top, put away the accessories, and then take out the fixture wrapped in the plastic bag.
Packing after use
1. Switch off the fixture and wait for at least 5 minutes before disconnecting it from AC power. Cool down the fixture for
at least 15 minutes before packing.
2. Flight case: Wrap the fixture in plastic bags. Hold it by the handles, and then carefully place it inside the flight case
along with all the accessories. Close the cover. Do not upside down.
Cardboard box: Wrap the fixture in plastic bags. Put it in the packaging foam along with all the accessories. Place the
other set of packaging foam on top then carefully put it inside the cardboard box.
Accessories
Item
Qty
Unit
Notes
User Manual
1
pc
Waterproof signal cable
2
pcs
Waterproof power cable (female)
1
pc
0.5*2.5mm2IP67
Notes
Accessories are subject to change without any prior written notice.

GTD-L2080P User Manual
6
Product introduction
1 Glass fixing plate
2 Manual adjusting screw
3 Handle
4 Lens
5 Base
6 Aluminum profiles of power supply
Installation
Device installation
The lamp is placed on the floor for use, see below:

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Power/ Control connection
Power connection
Connection method:
L (Live) Brown wire
E (Earth) Yellow / Green bi-color wire
N (Neutral) Blue wire
The voltage and frequency of the power source must be in compliance with the ones marked on the fixture. It is
strongly recommended that each fixture are to be connected to the power source separately so that they can be
switched on / off individually.
Control connection
The fixture has 5-pin XLR connectors for DMX data input and output (3-pin optional) as shown below. Connection between
the console and fixture, and between fixtures must be made with 2 core screened DMX signal cable. Maximum connecting
distance of signal cable is 150 meters. Additional DMX512 signal-amplifier is recommended for longer distance.
Connect the Console’s DMX OUTPUT to the first fixture’s DMX INPUT, then the first fixture’s DMX OUTPUT to the second
fixture’s DMX INPUT and so on. It is recommended not to connect more than 32 units on a single DMX universe. On the last
fixture‘s output connect a DMX terminator. (The terminator is a XLR connector with a ¼ W and 120Ω resistor between the
pin 2 and pin 3) as shown below:
Testing
Connect the fixture to AC power. Check if the LED lamp is on ad the fixture is independently controllable before putting into
operation.

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Control panel
The control panel with buttons and digital display can access the function menu and configure the fixture easily.
Press MENU to check or modify the functions of the fixture; Press UP or DOWN to view or select the function menu.
Press ENTER to choose a function and enter into corresponding sub menu. Each menu represents a specific function
of the fixture.
Press ENTER to select the specific function and save the changes or enter into the submenu, then press UP or DOWN
to change the value of the selected function (increase or decrease).
Press MENU to return to the previous menu or exit.
LED indicators:
Power on: RED power LED indicator on
Signal on: Green DMX indicator on
No Signal: Green DMX indicator off

GTD-L2080P User Manual
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Menu structure
L2080P –Menu Structure
Revision: A
Valid from firmware version: 1.0
Level 1
Level 2
Level 3
Level 4
Info
Addr
AXXX A001
Setting the DMX address
Play
RUN
MSTR/ALON
Running build-in program as the master or the slave
AUDI
MSTR/ALON
Receiving sound signal as the master or the slave
AUTO
Clos/Hold/Auto/Audi
Setting the status when no DMX signal received
Fine
CH1
Standard channel mode
CH2
Simplified channel mode
MIC
M-XX M-72
Adjusting the sensitivity of Microphone
DISP
VALU
D–XX D-00 (DXXX)
Display the channel value
DON
ON/OFF
Turn on or off the Backlight time function
EDDY
ON/OFF
Inverted Display
SET
RDMX
ON/OFF
Allow the console to change the Address
DEFA
ON/OFF
Factory reset
FANS
AUTO/HIGH/LOW
Setting the Fans’ status
Save
OFF/1-99M 15M
Close the LED light when no signal
Ver
V1.0~V9.9
Software version
STAT
R-xx
xxx
Manual control
Edit
SEPR
AUTO IP01~IP10
Selecting the program that want to edit
STEP
S–01 ~ S–48
Setting the steppes of program
SCXX
C–01~C–XX
XXX(0~255)
Editing program by manual
TIME
T XXX(001~999)
Running time
CEDT
ON/OFF
Receiving build-in program from console or not
REC.
RE.XX
Recording senses automatically
RUN
ON/OFF
Program test
SDMD
MOD0 ~MOD5
Dimmer mode
Notes
Settings highlighted in light grey are default values.

GTD-L2080P User Manual
10
DMX protocol
L2080P- DMX Protocol
Revision: A
Valid from firmware version: 1.0
DMX protocol –CH1 [10 channels]
CH1(10)
Name
DMX value
DMX
percentage
Function
Default
DMX
Value
1
Strobe/Shutter
0
31
0.0%
12.2%
Closed
0(0%)
32
63
12.5%
24.7%
Open
64
127
25.1%
49.8%
Synchronous strobe from slow to fast
128
159
50.2%
62.4%
Open
160
223
62.7%
87.5%
Random strobe from slow to fast
224
255
87.8%
100.0%
Open
2
Intensity
0
255
0.0%
100.0%
No light → Full light
0(0%)
0
65535
0.0%
100.0%
Intensity fade, fine (LSB)
3
Red
0
255
0.0%
100.0%
No light → Full light
0(0%)
Red2
0
255
0.0%
100.0%
No light → Full light
0(0%)
4
Green
0
255
0.0%
100.0%
No light → Full light
0(0%)
Green2
0
255
0.0%
100.0%
No light → Full light
0(0%)
5
Blue
0
255
0.0%
100.0%
No light → Full light
0(0%)
Blue2
0
255
0.0%
100.0%
No light → Full light
0(0%)
6
Whit
0
255
0.0%
100.0%
No light → Full light
0(0%)
Whit2
0
255
0.0%
100.0%
No light → Full light
0(0%)
7
Rainbow Function
0
9
0.0%
3.5%
No function
0(0%)
10
39
3.9%
15.3%
Rainbow scene 1
40
71
15.7%
27.8%
Rainbow scene 2
72
103
28.2%
40.4%
Rainbow scene 3
104
135
40.8%
52.9%
Rainbow scene 4
136
167
53.3%
65.5%
Rainbow scene 5
168
199
65.9%
78.0%
Rainbow scene 6
200
231
78.4%
90.6%
Rainbow scene 7
232
255
91.0%
100.0%
Rainbow flow from slow to fast
Rainbow Function
0
9
0.0%
3.5%
No function
0(0%)
10
39
3.9%
15.3%
Rainbow scene 1
40
71
15.7%
27.8%
Rainbow scene 2
72
103
28.2%
40.4%
Rainbow scene 3
104
135
40.8%
52.9%
Rainbow scene 4
136
167
53.3%
65.5%
Rainbow scene 5
168
199
65.9%
78.0%
Rainbow scene 6
200
231
78.4%
90.6%
Rainbow scene 7

GTD-L2080P User Manual
11
CH1(10)
Name
DMX value
DMX
percentage
Function
Default
DMX
Value
232
255
91.0%
100.0%
Rainbow flow from slow to fast
8
Color temperature
0
24
0.0%
9.4%
No function
0(0%)
25
35
9.8%
13.7%
3200K
36
46
14.1%
18.0%
3400K
47
57
18.4%
22.4%
3600K
58
68
22.7%
26.7%
3800K
69
79
27.1%
31.0%
4000K
80
90
31.4%
35.3%
4200K
91
101
35.7%
39.6%
4400K
102
112
40.0%
43.9%
4600K
113
123
44.3%
48.2%
4800K
124
134
48.6%
52.5%
5000K
135
145
52.9%
56.9%
5200K
146
156
57.3%
61.2%
5400K
157
167
61.6%
65.5%
5600K
168
178
65.9%
69.8%
5800K
179
189
70.2%
74.1%
6000K
190
200
74.5%
78.4%
6200K
201
211
78.8%
82.7%
6400K
212
222
83.1%
87.1%
6600K
223
233
87.5%
91.4%
6800K
234
244
91.8%
95.7%
7000K
245
255
96.1%
100.0%
7200K
Color temperature
0
24
0.0%
9.4%
No function
0(0%)
25
35
9.8%
13.7%
3200K
36
46
14.1%
18.0%
3400K
47
57
18.4%
22.4%
3600K
58
68
22.7%
26.7%
3800K
69
79
27.1%
31.0%
4000K
80
90
31.4%
35.3%
4200K
91
101
35.7%
39.6%
4400K
102
112
40.0%
43.9%
4600K
113
123
44.3%
48.2%
4800K
124
134
48.6%
52.5%
5000K
135
145
52.9%
56.9%
5200K
146
156
57.3%
61.2%
5400K
157
167
61.6%
65.5%
5600K
168
178
65.9%
69.8%
5800K
179
189
70.2%
74.1%
6000K
190
200
74.5%
78.4%
6200K

GTD-L2080P User Manual
12
CH1(10)
Name
DMX value
DMX
percentage
Function
Default
DMX
Value
201
211
78.8%
82.7%
6400K
212
222
83.1%
87.1%
6600K
223
233
87.5%
91.4%
6800K
234
244
91.8%
95.7%
7000K
245
255
96.1%
100.0%
7200K
9
Dimmer Mode
0
5
0.0%
2.0%
M0.600Hz, Dimming curve1, fade dimming
0(0%)
6
11
2.4%
4.3%
M1.600Hz, Dimming curve2, snap dimming
12
17
4.7%
6.7%
M2.1200Hz, Dimming curve1, fade dimming
18
23
7.1%
9.0%
M3.1200Hz, Dimming curve2, snap dimming
24
29
9.4%
11.4%
M4.600Hz, Dimming curve1, fade dimming
30
35
11.8%
13.7%
M5.600Hz, Dimming curve2, snap dimming
36
255
14.1%
100.0%
Reserved
10
Special controls
0
39
0.0%
15.3%
No function
0(0%)
40
59
15.7%
23.1%
Built-in program 1
60
79
23.5%
31.0%
Built-in program 2
80
99
31.4%
38.8%
Built-in program 3
100
119
39.2%
46.7%
Built-in program 4
120
139
47.1%
54.5%
Built-in program 5
140
159
54.9%
62.4%
Built-in program 6
160
179
62.7%
70.2%
Built-in program 7
180
199
70.6%
78.0%
Built-in program 8
200
219
78.4%
85.9%
Built-in program 9
220
239
86.3%
93.7%
Built-in program 10
240
255
94.1%
100.0%
No function

GTD-L2080P User Manual
13
DMX protocol –CH2 [17 channels]
CH2(17)
Name
DMX value
DMX
percentage
Function
Default
DMX
Value
1
Strobe/Shutter
0
31
0.0%
12.2%
Closed
0(0%)
32
63
12.5%
24.7%
Open
64
127
25.1%
49.8%
Synchronous strobe from slow to fast
128
159
50.2%
62.4%
Open
160
223
62.7%
87.5%
Random strobe from slow to fast
224
255
87.8%
100.0%
Open
2
Intensity
0
255
0.0%
100.0%
No light → Full light
0(0%)
3
0
65535
0.0%
100.0%
Intensity fade, fine (LSB)
4
Red
0
255
0.0%
100.0%
No light → Full light
0(0%)
5
Red2
0
255
0.0%
100.0%
No light → Full light
0(0%)
6
Green
0
255
0.0%
100.0%
No light → Full light
0(0%)
7
Green2
0
255
0.0%
100.0%
No light → Full light
0(0%)
8
Blue
0
255
0.0%
100.0%
No light → Full light
0(0%)
9
Blue2
0
255
0.0%
100.0%
No light → Full light
0(0%)
10
Whit
0
255
0.0%
100.0%
No light → Full light
0(0%)
11
Whit2
0
255
0.0%
100.0%
No light → Full light
0(0%)
12
Rainbow Function
0
9
0.0%
3.5%
No function
0(0%)
10
39
3.9%
15.3%
Rainbow scene 1
40
71
15.7%
27.8%
Rainbow scene 2
72
103
28.2%
40.4%
Rainbow scene 3
104
135
40.8%
52.9%
Rainbow scene 4
136
167
53.3%
65.5%
Rainbow scene 5
168
199
65.9%
78.0%
Rainbow scene 6
200
231
78.4%
90.6%
Rainbow scene 7
232
255
91.0%
100.0%
Rainbow flow from slow to fast
13
Rainbow Function
0
9
0.0%
3.5%
No function
0(0%)
10
39
3.9%
15.3%
Rainbow scene 1
40
71
15.7%
27.8%
Rainbow scene 2
72
103
28.2%
40.4%
Rainbow scene 3
104
135
40.8%
52.9%
Rainbow scene 4
136
167
53.3%
65.5%
Rainbow scene 5
168
199
65.9%
78.0%
Rainbow scene 6
200
231
78.4%
90.6%
Rainbow scene 7
232
255
91.0%
100.0%
Rainbow flow from slow to fast
14
Color temperature
0
24
0.0%
9.4%
No function
0(0%)
25
35
9.8%
13.7%
3200K
36
46
14.1%
18.0%
3400K
47
57
18.4%
22.4%
3600K

GTD-L2080P User Manual
14
CH2(17)
Name
DMX value
DMX
percentage
Function
Default
DMX
Value
58
68
22.7%
26.7%
3800K
69
79
27.1%
31.0%
4000K
80
90
31.4%
35.3%
4200K
91
101
35.7%
39.6%
4400K
102
112
40.0%
43.9%
4600K
113
123
44.3%
48.2%
4800K
124
134
48.6%
52.5%
5000K
135
145
52.9%
56.9%
5200K
146
156
57.3%
61.2%
5400K
157
167
61.6%
65.5%
5600K
168
178
65.9%
69.8%
5800K
179
189
70.2%
74.1%
6000K
190
200
74.5%
78.4%
6200K
201
211
78.8%
82.7%
6400K
212
222
83.1%
87.1%
6600K
223
233
87.5%
91.4%
6800K
234
244
91.8%
95.7%
7000K
245
255
96.1%
100.0%
7200K
15
Color temperature
0
24
0.0%
9.4%
No function
0(0%)
25
35
9.8%
13.7%
3200K
36
46
14.1%
18.0%
3400K
47
57
18.4%
22.4%
3600K
58
68
22.7%
26.7%
3800K
69
79
27.1%
31.0%
4000K
80
90
31.4%
35.3%
4200K
91
101
35.7%
39.6%
4400K
102
112
40.0%
43.9%
4600K
113
123
44.3%
48.2%
4800K
124
134
48.6%
52.5%
5000K
135
145
52.9%
56.9%
5200K
146
156
57.3%
61.2%
5400K
157
167
61.6%
65.5%
5600K
168
178
65.9%
69.8%
5800K
179
189
70.2%
74.1%
6000K
190
200
74.5%
78.4%
6200K
201
211
78.8%
82.7%
6400K
212
222
83.1%
87.1%
6600K
223
233
87.5%
91.4%
6800K
234
244
91.8%
95.7%
7000K
245
255
96.1%
100.0%
7200K

GTD-L2080P User Manual
15
CH2(17)
Name
DMX value
DMX
percentage
Function
Default
DMX
Value
16
Dimmer Mode
0
5
0.0%
2.0%
M0.600Hz, Dimming curve1, fade dimming
0(0%)
6
11
2.4%
4.3%
M1.600Hz, Dimming curve2, snap dimming
12
17
4.7%
6.7%
M2.1200Hz, Dimming curve1, fade dimming
18
23
7.1%
9.0%
M3.1200Hz, Dimming curve2, snap dimming
24
29
9.4%
11.4%
M4.600Hz, Dimming curve1, fade dimming
30
35
11.8%
13.7%
M5.600Hz, Dimming curve2, snap dimming
36
255
14.1%
100.0%
Reserved
17
Special controls
0
39
0.0%
15.3%
No function
0(0%)
40
59
15.7%
23.1%
Built-in program 1
60
79
23.5%
31.0%
Built-in program 2
80
99
31.4%
38.8%
Built-in program 3
100
119
39.2%
46.7%
Built-in program 4
120
139
47.1%
54.5%
Built-in program 5
140
159
54.9%
62.4%
Built-in program 6
160
179
62.7%
70.2%
Built-in program 7
180
199
70.6%
78.0%
Built-in program 8
200
219
78.4%
85.9%
Built-in program 9
220
239
86.3%
93.7%
Built-in program 10
240
255
94.1%
100.0%
No function
Notes
Do not switch off the fixture within the first minute after switching on. Wait for at least 5 minutes to switch on the fixture.

GTD-L2080P User Manual
16
Technical specification
Optical
Light source: LED 20W
Quantity: 80 pcs
Expected average lifetime: 50000 hours
Beam angle (10% peak angle): 13°Std. (Opt. 38°/58°)
Beam angle (50% peak angle): 7°Std. (Opt. 20°/38°)
Photometric
Total Output (Lumen): 34012 lumens
Color temperature: 3200K-7200K linear regulation
Color mixing distance: 5m
Electrical
Power input, nominal: AC 100-240V, 50/60Hz
Max. Power consumption: 1245W, max current: 12.47A, PF≥0.97
Power supply unit: Auto-ranging electronic SMPS
Control and programming
Control channels (DMX): 10/17
Protocol: DMX-512
Display: 4 x 8 segment display
Physical / Installation
Weight: 31.8 kg (70 lbs.)
IP rating: IP65
Material: Aluminium, steel, plastic
Dynamic effects
Strobe: 1-25Hz, synchronized, pulse effects
Dimmer: 0-100% electronic linear dimming
Thermal
Operating range: 14˚F to 113˚F (-10˚C to +45˚C)
Startup range: 5˚F to 113˚F (-15˚C to +45˚C)
Storage range: -40˚F to 140˚F (-40˚C to +60˚C)
Cooling: Passive
Humidity: ≤98%
Connections
AC power: 1m (3.28 ft.) cable with water proof plugs (in/out)
DMX data input/output: 2 x 1m (3.28 ft.) cable with 5-pin Neutrik IP65 XLR plugs (in/out)

GTD-L2080P User Manual
17
Certification and Safety
EMC: EN 55103-1:2009, EN 55103-2:2009, EN 61000-3-2:2006+A2:2009, EN 61000-3-3:2013
Safety: EN 60598-2-17:1989/A2:1991
Photometric

GTD-L2080P User Manual
18
Cleaning and maintenance
It is required that the fixture should be kept clean and well maintained to ensure its reliability. Its lifespan mainly depends
on the working environment and proper operation. Should you have any questions, please consult a technical engineer of
GTD Lighting.
Notes
Damage resulted from dust, smoke, oil or improper use is not covered by warranty.
Warning
Disconnect the fixture from AC power, and let it cool down for at least 15 minutes before opening the housing. Make sure
to use a soft cloth to clean the optical components, and be careful, as the coating is easily scratched. Do not use any organic
solvent such as alcohol to clean the reflector mirror, dichroic color filters or housing of the fixture.
If the lens is cracked or otherwise damaged, replace it immediately.
If the LED lamp becomes damaged or deformed in any way it must be replaced.
If the light from the LED lamp appears dim, this normally indicates that it is reaching the end of its life span and
should be changed at once. Aged LED lamps run to the extremity of their life might explode.
If fixture does not function, check the fuse on the power socket of the fixture. Replace the fuse of the same
specification if it is blown.
The fixture is equipped with thermal-protection device that will switch off the LED lamp in case of overheating. If this
happens, please check that the fans are not blocked, and clean them if they are dirty. Check whether the fans are
operational. If not, call a qualified technician. Troubleshoot and correct the problem before switching on the fixture
again. Any maintenance work should only be carried out by qualified technicians.

GTD-L2080P User Manual
19
Troubleshooting
Problem
Possible Cause
Suggested Correction
No response
after connected
to A/C power
Power switch not turned on.
Turn on power switch.
Take out the fuse and check if it is blown.
Locate the blown fuse. Remove the broken fuse. Insert a replacement
fuse of the correct amperage.
Abnormal A/C input (A/C power socket,
power cables, luminaire power socket).
Replace AC power socket and power cables, and then adjust power
socket for proper connection.
No DC voltage from switching power
supply.
Check if the switching power supply has DC voltage output. Replace
the switching power supply.
No response or
wrong response
to the
commands of
the control
system
DMX cables disconnected from fixture’s
DATA IN connector.
Connect DMX cable to the fixture’s DATA IN connector.
Open circuit or short circuit fault in the
DMX cables.
Replace DMX cables as required.
Wrong DMX address for the fixture in the
control system.
Ensure the address in “Run setting > Address Setting > Address”of the
fixture is consistent with the address in the control system.
Misuse in “Channel setting > Channel
Mode” of the fixture.
Choose the channel mode in “Channel setting > Channel Mode” of
the fixture as required by the user.
Malfunctioning of DMX cannon input
/output connectors. No input/output
voltage to the main control board of the
fixture.
Troubleshooting the DMX XLR signal plate of the fixture, replace the
main control board of the fixture.
LED lamp off
There is no signal output to the main
control board PWM.
Replace the main control board or repair.
No output to the drive board LED +/ LED-
or drive board over-current, check line
connector if contact bad.
Reconnect the terminal, replace the driver board
Normal end of LED lamp life, bad welding
or poor heat dispersion.
Repair or replace LED light source or replace the whole piece of
aluminum board, remove the cooling system failure.
Decreased
brightness,
uneven pattern
projections
LED lamp aging, check the service time of
LED light source, test LED drive board’s
current.
Replace the LED light source or adjust the drive board’s current.
Reduce LED’s brightness.
Excessive dusts or smudges on the effect
assembly, focus module and objective
lens.
Follow the instructions stated in this user manual to clean the effect
assembly, focus module and objective lens.
Damaged or deformed effect assembly,
focus module or objective lens.
Replace the damaged or deformed components.