ETC Source Four LED Series User manual

Part Number: 7060M2500-06.01 Rev: C
Released: 2019-08
Source Four
Assembly Guide
Production Dates: September 2004–Present

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ETC intends this document, whether printed or electronic, to be provided in its entirety.

Table of Contents i
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Document Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Help from ETC Technical Services . . . . . . . . . . . . . . . . . . . . . . .2
Basic Fixture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Assembling basic fixture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Lamp Burner Assembly . . . . . . . . . . . . . . . . . . . . 5
Assembling lamp socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Reflector Housing Assembly . . . . . . . . . . . . . . . .9
Removing reflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Installing reflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Cleaning reflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Shuttle Barrel Assembly . . . . . . . . . . . . . . . . . . 12
Assembling front barrel . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Lens Tubes: 19° to 50° . . . . . . . . . . . . . . . . . . . . 14
Assembling lens tube: 19° to 50° . . . . . . . . . . . . . . . . . . . . . .15
Lens Positions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Lens Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Assembling the lens tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Cleaning glass lens: 19° to 50° and all EDLT lenses . . . . . . . .18
Lens Tube: 10° . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Lens Tube: 5° . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Assembling lens tubes: 5° and 10° . . . . . . . . . . . . . . . . . . . . .21
Cleaning polymer lens: 5° and 10° . . . . . . . . . . . . . . . . . . . . .21
Lens Tube: 14° . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Assembling lens tube: 14°. . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Lens Markings and Positions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Assembling the lens tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Cleaning glass lenses: 14° . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

ii Source Four Assembly Guide
Lens Tube: 70° . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Assembling lens tube: 70°. . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Lens Markings and Positions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Assembling the lens tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Cleaning glass lens: 70° . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Lens Tube: 90° . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Assembling lens tube: 90°. . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Lens Markings and Positions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Assembling the lens tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Cleaning glass lens: 90° . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Introduction 1
Introduction
Welcome to the Source Four Assembly Guide .
Please note that the part numbers listed in this guide may differ from the parts required for
your particular Source Four fixture. Part numbers for fixtures change occasionally as parts are
replaced or upgraded.
To ensure that you are ordering the proper part for your specific fixture, please contact your
ETC dealer, or ETC Customer Service for assistance.
Document Conventions
This document uses the following conventions to draw your attention to important
information.
All ETC documents are available for free download from our website: etcconnect.com.
Please email comments about this manual to: [email protected].
Note:
Notes are helpful hints and information that is supplemental to the main text.
CAUTION:
A Caution statement indicates situations where there may be undefined or
unwanted consequences of an action, potential for data loss or an equipment
problem.
WARNING: A Warning statement indicates situations where damage may occur, people
may be harmed, or there are serious or dangerous consequences of an action.
WARNING: RISK OF ELECTRIC SHOCK! This warning statement indicates situations where
there is a risk of electric shock.

2Source Four Assembly Guide
Help from ETC Technical Services
If you are having difficulties, and your problem is not addressed by this document, try the ETC
support website at support.etcconnect.com or the main ETC website at etcconnect.com. If
none of these resources are sufficient, contact ETC Technical Services directly at one of the
offices identified below. Emergency service is available from all ETC offices outside of normal
business hours.
When calling for help, take these steps first:
• Prepare a detailed description of the problem
• Go near the equipment for troubleshooting
• Find your notification number if you have called in previously
Americas United Kingdom
ETC, Inc. ETC Ltd - UK
Technical Services Department Technical Services Department
3031 Pleasant View Road 26-28 Victoria Industrial Estate
Middleton, WI 53562 Victoria Road,
800-775-4382 (USA, toll-free) London W3 6UU England
[phone] [phone]
[email protected] te[email protected]
Asia Germany
ETC Asia ETC GmbH
Technical Services Department Technical Services Department
Room 1801, 18/F Ohmstrasse 3
Tower 1, Phase 1 Enterprise Square 83607 Holzkirchen, Germany
9 Sheung Yuet Road [phone]
Kowloon Bay, Kowloon, Hong Kong [email protected]
[phone]
[email protected]
France
ETC France
62-64 rue Danielle
Casanova
Saint-Denis Cedex
F93200
[phone]
[email protected]

Basic Fixture 3
Basic Fixture
Reference
Number
Part
Number Description Quantity Required
1 7060A2008 Lamp burner assembly rated up to 750W, Black 1
2 7060A2011-K Reflector housing assembly, single clutch, Black 1
3 7060A2011-K1 Reflector housing assembly, single clutch, White 1
4 7060A2020-K Reflector housing assembly, double clutch, Black 1
5 7060A2020-K1 Reflector housing assembly, double clutch, White 1
6 7060A2012-K Shutter barrel assembly, Black 1
7 7060A2012-K1 Shutter barrel assembly, White 1
8 7060A2000-K 5° lens tube, with knob 1
9 7060A2001-K 10° lens tube, with knob 1
10 7060A2050-K 14° lens tube, with knob 1
11 7060A2002-K 19° lens tube (6 x 16), with knob 1
12 7060A2003-K 26° lens tube (6 x 12), with knob 1
13 7060A2004-K 36° lens tube (6 x 9), with knob 1
14 7060A2005-K 50° lens tube (4.5 x 6), with knob 1
15 7060A2051-K 70° lens tube, with knob 1
16 7060A2052-K 90° lens tube, with knob 1
17 7060A4008-01 Knob set with male insert 2
18 HW5143 Washer, flat fiber 1
19 HW5197 Screw, 1/4-20 x 5/8, black zinc 1
Note:
Any part that is indicated as “Black” may be also ordered in white or silver. When
ordering white, use the part number suffix -1, and for silver, use the part number
suffix -5.
1
2
3
4
5
Figure 1
6
7
Color frame
Gel retainer clip
8
9
10
11
12
13
14
15
16
18
17
19

4Source Four Assembly Guide
Assembling basic fixture
1: Follow instructions under Assembling lamp socket on page 6 .
2: Follow instructions under
Reflector Housing Assembly on page 9 .
3: Follow instructions under
Shuttle Barrel Assembly on page 12 .
4: Assemble Lens Tubes following the instructions for your applicable lens degree application.
5: Insert lens tube assembly (8-16) fully into the front barrel assembly (6-7). Align the mounting hole
with the slot and secure with knob (17). See
Figure 1 on page 3 .
6: Install reflector housing (2-5) onto front barrel assembly (6-7) and align the two mounting holes.
Secure with screw (19) on top, and knob (17) on bottom. Tighten both securely. See
Figure 1 on
page 3 .
7: Install the lamp socket assembly (1) to the reflector housing (2-5) and secure with brass knurled
screw on rear of lamp socket assembly.
8: Release the gel retaining clip by pushing it sideways while gently pulling backwards.
9: Insert the color frame.
10: Lock the clip by pushing sideways while gently pushing it forward.

Lamp Burner Assembly 5
Lamp Burner Assembly
Reference
Number
Part
Number Description Quantity Required
1 7060A1033 Lamp retainer retrofit kit (Note: Does not include socket) 1
2 7060A2015
Light baffle retrofit kit
Includes socket w/ mounting hardware and sleeve 1
3 7060A3007
Socket, light baffle casting (Note: For all related fixtures
regardless of color) 1
4 7060A3011 Hub, index casting 1
5 7060A3012 Spring, lamp retainer 1
6 7060A3025 Screw, 1/4-20 x 1.55 knurled head 1
7 7060A3055 Housing, socket, casting, Black 1
8 7060A3056 Clamp, strain relief, Black 1
9 7060A3085 Lamp retainer wire 1
10 7060A4007 Knob, X-Y, lamp set 1
11 7060A4008-02 Knob, Z, lamp set w/ female insert 1
12 7060A4011 Bushing cup 1
13 7060A4019 Label, Fixture Warning 1
14 7060A4037 Handle, Insulated Rear, Black 1
15 7060A4094 750W Handle label, Black 1
16 7060A4095 Label, 750W Handle, White 1
17 7060B7003
48" Source Four ground wire assembly
W420 wire, 16 Awg, 200C/300V, green, UL 1180/CSA w/
J490T lugs
1
18 7060B7007
4" Source Four ground wire assembly
W420 wire, 16 Awg, 200C/300V green, UL 1180/CSA w/ J490T
lugs
1
19 7060B7019 S4 UL Socket Assy 1
4
12
7
24
31
29
25
18
3
23
9
14
21
6
11
27
28
26
8
22
5
Figure 2
10
13
17
30
19
7

6Source Four Assembly Guide
Assembling lamp socket
Tools Required:
• Open-end adjustable wrench or a 7/16” socket
• Needle-nose pliers
• #2 Phillips screwdriver
1: Set the crossbar of the retainer clip (9) under the two hooks on the clip bracket as shown in
Figure 3 .
2: Place the Tinnerman clip (30) over the retainer clip crossbar between the two hooks and press it
down firmly until it snaps into place.
20 HW2125 Screw, 6-32 x 3/8” PhFHTC (lamp blocking screw not pictured) 1
21 HW2181 Screw, self tap, 6-32 x 5/8, black zinc 4
22 HW3103 Screw, 8-32 x 5/8 PhFHMS, black zinc 2
23 7060A3204 Bolt, 1/4-20 x 1 3/4”, full thread 1
24 HW5123 Nut, hex, 9/16-18, black zinc 1
25 HW534 Nut, hex, 1/4-20, black zinc 1
26 HW746 Screw Retainer Flat 12-6-1 1
27 HW747 Washer, wave 1
28 HW748 Spring, compression CO720-072 1
29 HW749 Spring Ground 1
30 HW8209 Clip, Tinnerman 1
31 W6195 Sleeve, fiberglass 39”, 5/16”, Black 1
32 W689-1 Sleeve, fiberglass 39”, 5/16”, White 1
Note:
Any part that is indicated as “Black” may be also ordered in white or silver. When
ordering white, use the part number suffix -1, and for silver, use the part number
suffix -5.
Reference
Number
Part
Number Description Quantity Required
30
9
Figure 3

Lamp Burner Assembly 7
3: Insert the bolt (23) through the light baffle socket casting (3). See Figure 4 .
4: Install the green ground wire assemblies (17 and 18) on the bolt (23) with the prongs on the
crimped connectors toward the casting. Run both wires through the indent in the lip around the
bolt hole. Secure with nut (25) and tighten securely (60 inch pounds).
5: Place the socket assembly (19) into the light baffle socket casting (3). Be sure it is well seated.
6: Install the lamp retainer spring (5). The lamp retainer spring secures the socket. Insert the spring
one end at a time, making sure the rectangular slot in each side of the spring seats on the
corresponding tab in the casting. See
Figure 4 .
7: Install the bushing cup (12) into the housing socket casting (7) as shown in
Figure 5 . The cup
should slide smoothly up and down, but not side to side.
8: Insert the threaded end of the index hub (4) through the holes in the bushing cup and the back
of the housing socket casting (7).
9: Slide the X-Y knob (10) over the exposed index hub bolt (4), then insert the wave washer (27) on
the bolt and secure with the 9/16 hex nut (24). Hand tighten the X-Y knob (10).
Note:
If the spring does not seat correctly, coax it into place with a screwdriver or needle-
nose pliers.
Note:
Install the wave washer with the upward curve toward the hex nut.
30
23
18
17
9
19
5
25
Figure 4
3
12
7
4
27
24
10 Figure 5

8Source Four Assembly Guide
10: Insert the knurled head screw (6) through the housing socket (7) casting as shown in Figure 6 .
11: Install the shorter green ground wire (18) onto the screw. The prongs on the crimped connector
should be toward the casting.
12: Install the ground spring (29) onto the screw and secure it with the Southco flat retaining ring
(26). Install the Southco ring with its prongs away from the casting.
13: Lay the leads in the bottom half of the cable clamp (located in the housing socket casting [7]),
making sure that the fiberglass sleeving extends slightly past the screw holes in the housing
socket casting. Install new sleeving if necessary. Then, route the wires as shown in
Figure 7 .
14: Install the top half of the cable clamp (8) and secure it with the two screws (22). Tighten the
screws alternately to ensure a solid connection.
15: Using the four screws (21), attach the handle (14) to the lamp socket assembly. See
Figure 2 .
16: Place the compression spring (28) on the protrusion on the inside of the index hub. See
Figure 6 .
17: Insert bolt (23) through spring (28) and through the index hub (4) of the housing socket (7),
joining the two castings as shown in
Figure 6 . Make sure wires are not pinched between the two
pieces.
18: Before proceeding, check again to make sure the wires are still positioned as indicated in
Figure 7 . Adjust if necessary.
19: Press the two castings together firmly so the bottom of the light baffle (3) sits on top of the cable
clamp (8), then install Z lamp knob (11). Hand tighten the knob all the way to the right. See
Figure 6 .
Note:
Use pliers to straighten the Southco retaining ring (26) if it bends when you install it
on the bolt.
CAUTION:
You must follow the wire routing diagram to ensure that the socket leads do
not interfere with the lamp focus mechanism.
Note:
To ensure that the clamp holds the cable tightly, flatten the cable, then fold over the
sleeving before you install the top half of the clamp. Make sure the top edge of the
cable clamp is even with the edge of the socket to prevent interference with lamp
focus movement. Make sure sleeving is not pinched.
CAUTION:
You must install Z knob as described above to ensure proper lamp focus
travel.
6
8
29
26
Cable Clamp in
Housing
22
28
11
Figure 6 Figure 7
Green wires
White wires
7
18
23

Reflector Housing Assembly 9
Reflector Housing Assembly
Reference
Number
Part
Number Description Quantity Required
1 7060A2013-K Reflector housing rivet assembly, single clutch, Black 1
2 7060A2019-K Reflector housing rivet assembly, double clutch, Black 1
3 7060A3006 Clip, reflector retainer 4
4 7060A3019 Spring, reflector support 1
5 7060A3058 Bracket, Yoke, Black 1
6 7060A3080 Light leak baffle, Black 2
7 7060A4008-01 Knob set with male insert 1
8 7060A4010 Bushing, gate 4
9 7060A4015 Reflector, molded glass, coated 1
10 HW5125 Bolt, carriage 5/16-18 x 3/4” LG 2
11 HW5126 Washer, flat, 5/16, black zinc 4
12 HW5127 Nut, hex, 5/16-18 2
13 HW5193 Bolt, hex, 5/16-18 x 3/4”, black zinc 2
14 HW5197 Screw, PH, 1/4-20 x 5/8”, black zinc 1
15 HW752 Rivet, machine, 3/16 x 31, oval head, black zinc 4
16 HW8144 Handle, yoke, knob, 5/16-15, Black 2
Note:
Any part that is indicated as “Black” may be also ordered in white or silver. When
ordering white, use the part number suffix -1, and for silver, use the part number
suffix -5.
Double-clutch reflector
housing for 5°and 10° fixtures
Figure 8
1
2
3
4
5
7
8
9
10
11
13
14
15
16

10 Source Four Assembly Guide
Removing reflector
Tools Required:
• Minimally padded work surface (cardboard, carpet, or rubber mat recommended)
1: Place the reflector housing face down on your work surface so that the concave reflector surface
points downward.
2: Loosen the clutch and rotate the yoke so that it is perpendicular to the housing at roughly a 90°
angle. Tighten the clutch.
3: Using the yoke as your handle, raise the housing assembly off of the work surface a few inches
and then firmly tap the housing on the work surface. This should force the reflector out of its
clips.
4: Carefully lift the housing to see if the reflector is released. If it is not, repeat step 3 with slightly
more force.
Installing reflector
1: Place the reflector housing casting (1-2) on a flat work surface with the large opening facing up.
2: Install the reflector support spring (4) in the circular opening at the base of the casting.
3: Insert the reflector (9) at an angle, under any three adjacent legs of the reflector's clips.
4: Gently press down on the opposite side of the reflector until it snaps into place under the
remaining clips.
WARNING: This procedure may crack or break the reflector. Always wear gloves, safety
glasses, and a dust mask when performing this procedure.
Note:
The following assumes all four reflector retainer clips (2) have already been riveted to
the reflector housing casting (1) and the gate bushings (3) installed on the retainer
clips. See Figure 8.
Note:
If the reflector does not snap in, turn the casting over. Gently pull on the side of the
reflector that has not snapped in until the rest of the reflector slides into place.
Step 3 Step 4
Under three
adjacent clips

Reflector Housing Assembly 11
Cleaning reflector
Remove dust with a blast of oil-free air or wipe with a clean, lint-free cloth. Isopropyl alcohol, distilled
water or a 50%-50% mixture of each can be used to clean the glass surface.
WARNING: Do not use ammonia-based or other harsh commercial cleaners. Clean
reflector only as directed.
Commercially available glass cleaning agents should be avoided as they may
contain ammonia, other harsh chemical detergents or abrasive agents. These
cleaners may damage the glass surface and the Anti-Reflective coatings. Do
not immerse or soak the glass in any cleaning solution.

12 Source Four Assembly Guide
Shuttle Barrel Assembly
Reference
Number
Part
Number Description Quantity Required
1 7060A2025 Shutter blade assembly 4
2 7060A3001-01 Plate, divider with dimples (bottom) 1
3 7060A3001-02 Plate, divider (top) 1
4 7060A3003 Plate, gate (middle) 2
5 7060A3045 Cover, Iris Slot, Black 1
6 7060A3052 Shutter barrel, top casting, Black 1
7 7060A3053 Shutter barrel, bottom casting, Black 1
8 7060A4006 Shutter blade handle 4
9 HW3165 Screw, 8/32 x 1/2, PhPH Taptite Blz 4
10 HW232 Screw, 6-32 x 1/4” (Slot cover retention: pre 11/99) 2
11 HW372 Screw, 8-32 x 1/4” (begins 11/99) 2
12 HW370 Nut, Ny-lok, 8/32, black zinc 4
13 HW391 Screw, 8-32 x 3/4” PhPHMS, black zinc 4
14 HW754 Shutter spring 4
Note:
Any part that is indicated as “Black” may be also ordered in white or silver. When
ordering white, use the part number suffix -1, and for silver, use the part number
suffix -5.
Shutter Assembly: The bottom
divider plate (2) has four dimples
punched into the surface; the top
plate (3) has none. The middle
divider plates (4) are noticeably
thinner-gauge metal than the other
two.
6
7
See detail to
the right
14
9
5
11
4
3
2
Figure 12
Figure 13
1
8
8

Shuttle Barrel Assembly 13
Assembling front barrel
Tools Required:
• #2 Phillips head screwdriver
1: Stand the top and bottom front barrel castings (6 and 7) upright with the shutter end of the
castings toward the bottom.
2: Slide the bottom divider plate (2), into its place in the bottom casting (7). The dimples on the
divider plate must point down.
3: Assemble the divider plates and shutter blades as shown in
Figure 13 . For the shutter blade
between the divider (4) and the bottom divider plate (2), pull the blade and plate assembly
slightly forward to allow the handle to slip through the slot in the bottom casting, and then fully
seat the blade assembly into the casting.
4: With both front barrel castings still standing upright, join the two halves, sliding the handle of
the top shutter blade through the slot in the top front barrel casting (6).
5: Starting at the bottom of the castings (closest to the shutters), use four PHMS screws (5) to fasten
the front barrel casting halves together, as shown. Hand tighten only (25 inch pounds).
6: Turn the front barrel assembly over so that the narrower end is on your work surface.
7: Install the four shutter springs (14) between the four dimples in the shutter plate and the tabs
in the lip of the casting.
8: Place iris slot cover (5) over the iris slot. Use two screws (11) to secure the cover.
WARNING: During assembly, the shutter springs can pop out of place. Always wear
protective eyewear during this procedure.
Note:
The top front barrel casting contains the iris slot.
Note:
The bottom divider plate (2) has four dimples punched into the surface; the top
plate (3) has none. The middle divider plates (4) are noticeably thinner-gauge metal
than the other two.
The notches on the divider plates must fit against the flanges in the casting so the
plates do not move.
WARNING: Divider plate edges are sharp. Handle with caution.
Note:
Make sure no shutter assembly components are under the pattern holder guides.
Note:
The ends of the two front barrel castings must be even. Adjust as necessary before
completely tightening the nuts and screws. Failure to do this could interfere with the
barrel rotation.
Note:
Install the springs at the joints in the castings on either of the tabs at the joint. Once
they are installed, the springs at the joints will sit at a slight angle.

14 Source Four Assembly Guide
Lens Tubes: 19° to 50°
Reference
Number
Part
Number Description Quantity Required
1 7060A3169 Lens Tube, left casting, Black (rev. J begins 01/06 to
present) 1
2 7060A3171 Lens Tube, right casting, Black (rev J. begins 01/06 to
present) 1
3 7060A4077 Aspheric lens, 19° (begins 10/98) 1
4 7060A4001 Aspheric lens, 26° 1
5 7060A4020 Meniscus lens (front), 36° 1
6 7060A4021 Bi-convex lens (back), 36° 1
7 7060A4004 Aspheric lens, 50° 1
8 7060A3079 Clip, gel retainer, 90° bend 1
9 7060A4008-01 Knob set with male insert 1
10 7060A4009 Bushing, guide 8
11 7060A4012 Pad, lens support 5
12 HW3154 Screw, Phillips, 8-32 x 5/8 Taptite 4
13 HW5143 Washer, flat fiber 1
14 HW534 Nut, Hex, 1/4-20, black zinc 2
15 HW750 Spring, retainer 1
16 7060A4033 19° Lens tube label, white text (for black fixtures) 1
17 7060A4034 26° Lens tube label, white text (for black fixtures) 1
18 7060A4035 36° Lens tube label, white text (for black fixtures) 1
19 7060A4036 50° Lens tube label, white text (for black fixtures) 1
20 7060A4073 19° Lens tube label, black text (for white fixtures) 1
21 7060A4074 26° Lens tube label, black text (for white fixtures) 1
22 7060A4075 36° Lens tube label, black text (for white fixtures) 1
23 7060A4076 50° Lens tube label, black text (for white fixtures) 1
Note:
Any part that is indicated as “Black” may be also ordered in white or silver. When
ordering white, use the part number suffix -1, and for silver, use the part number
suffix -5.
12
Figure 14
Note: Lenses are degree
specific. Do not interchange
lenses (i.e., do not place a 19°
lens in a 26° slot).
1
2
8
9
10
11
13
14
15
3
4
5
6
7

Lens Tubes: 19° to 50° 15
Assembling lens tube: 19° to 50°
Lens Positions
The lens tube casting can accept either original or Enhanced Definition (ED) lenses. The lens positions
are color-coded within the lens casting to match the colored dots on the lenses (see
Figure 15 ). Only
lenses bearing at least one dot of the indicated color should be placed in that position.
Figure 15
Blue 
BLU
36
36ED
19ED
50ED
Yellow 
YLW
50
26ED
Green 
GRN
50ED
Orange 
ORNG
36
36ED
Black 
BLK
26
Red 
RED
19
19ED
26ED
Align lens dots toward this end

16 Source Four Assembly Guide
Lens Markings
The lenses are color-coded for identification. Normal lenses have a single dot of color while Enhanced
Definition lenses have a combination of white dots and color dots. See
Figure 16 for lens color coding.
Standard Lenses
19°
26°
36°
50°
19° ED
26° ED
36° ED
50° ED
Rear lens: 1 white dot & 1 blue dot
Front lens: 1 white dot & 1 red dot
Rear lens: 1 white dot & 1 yellow dot
Front lens: 1 white dot & 2 red dots
Rear lens: 1 white dot & 2 blue dots
Front lens: 1 white dot & 1 orange dot
Rear lens: 1 white dot & 3 blue dots
Front lens: 1 white dot & 1 green dot
Lens: Red Dot*
(one or two dots)
Lens: Black Dot*
(one or two dots)
Lens: Yellow Dot*
(one or two dots)
Rear lens: Blue dot
Front lens: Orange dot
Align lens dots toward this end
Enhanced Definition Lenses
Figure 16
* Some pre-2006 fixtures have lenses
with two color code dots. There is no
difference between lenses with one dot
or two dots.