Daktronics Bld series User manual

201 Daktronics Drive

Brookings, SD 57006-5128

www.daktronics.com/support

800.325.8766

BLD SERIES DIGITAL

BILLBOARD

SERVICE MANUAL

P2053

DD4245363

Rev 03

07 March 2022

responsibility for errors or omissions. No part of this book covered by the copyrights hereon may be reproduced or copied

in any form or by any means—graphic, electronic, or mechanical, including photocopying, taping, or information

storage and retrieval systems—without written permission of the publisher.

Daktronics trademarks are property of Daktronics, Inc. All other trademarks are property of their respective companies.

FCC Statement

Supplier Declaration of Conformity (SDoC)

This product complies with Part 15 of the FCC Rules.

Operation is subject to the following two conditions: (1)

This device may not cause harmful interference, and

(2) this device must accept any interference received,

including interference that may cause undesired

operation.

Note: This equipment has been tested and found to

comply with the limits for a Class A digital device,

pursuant to part 15 of the FCC Rules. These limits are

designed to provide reasonable protection against

harmful interference when the equipment is operated

in a commercial environment. This equipment

generates, uses, and can radiate radio frequency

energy and, if not installed and used in accordance

with the instruction manual, may cause harmful

interference to radio communications. Operation of

this equipment in a residential area is likely to cause

harmful interference in which case the user will be

required to correct the interference at their own

expense.

Warning: The user is cautioned that changes and

modications made to the equipment without the

approval of manufacturer could void the user’s

authority to operate this equipment.

Industry Canada Regulatory Information

This Class A digital apparatus complies with Canadian

ICES-003.

Cet appareil numérique de la classe A est conforme à

la norme NMB-003 du Canada.

Inquiries

Contact Daktronics with any questions regarding our

product compliance.

Mail:

Daktronics

201 Daktronics Dr.

Brookings, SD 57006 USA

Phone:

800-325-8766

Website:

www.daktronics.com

– i –

Table of Contents

1 Introduction��1

Important Contact Information ..........................................................................................................1

Display Identication............................................................................................................................1

Spare Parts.............................................................................................................................................1

Locate the Spare Parts Rack...............................................................................................................2

Open and Remove the Spare Parts Rack ��2

Remove a Module From Spare Parts Rack ��2

Field-Replaceable Units .......................................................................................................................3

2 Display and Control Overview ��4

Display Control System Flow Overview ..............................................................................................4

Display Power Overview ......................................................................................................................4

Display Signal Overview.......................................................................................................................4

3 Troubleshoot the Display��5

Remotely Cycle Power ........................................................................................................................5

Troubleshoot the Display......................................................................................................................5

4 Access Internal Components��9

Rear Access ..........................................................................................................................................9

Front Access..........................................................................................................................................9

5 Test and Remove Modules ��10

Module Lanyard Attachment ...........................................................................................................10

Remove a Module (Front Access)....................................................................................................10

Reinstall the Module (Front Access) .................................................................................................10

Remove a Module (Rear Access) ....................................................................................................11

Remove Fan Plenum..........................................................................................................................11

Remove a Module from Behind an ISP Enclosure ..........................................................................12

Remove the Optional SmartLinkTM For Module Access..................................................................12

Reinstall a Module (Rear Access).....................................................................................................12

6 Test and Replace Display Components ��14

Test a Module......................................................................................................................................14

Module Status Indicators ��14

Perform a Module Self-Test��14

Replace Module Power Supplies......................................................................................................14

Test and Replace a ProLink Router...................................................................................................15

Test a PLR ��15

Replace a ProLink Router��16

Replace PLR Power Supplies ��16

Replace a Display Fan��16

7 Control Equipment Overview, Service, and Replacement ��17

Open the ISP Enclosure......................................................................................................................17

Control Equipment Overview............................................................................................................18

ISP Enclosure ��18

DMP-8000 ��18

– ii –

Table of Contents

iBoot Bar ��18

Connect a Laptop .............................................................................................................................19

Replace Control Equipment .............................................................................................................19

Replace the DMP-8000 ��19

Replace DMP/VIP Power Supply��19

Replace the ISP Enclosure Filter ��20

Replace the Router��20

Replace the Ethernet Switch ��20

Replace the iBoot Bar ��20

Replace the SmartLinkTM (Optional)��21

Replace the Heater��21

8 Test and Replace the Multi-Direction Light Sensor ��22

Test the MDLS ......................................................................................................................................22

Replace the MDLS..............................................................................................................................22

9 Access and Troubleshoot the Webcam��23

Retract the Webcam to the Display Face (Rotation Mount Only)...............................................23

Troubleshoot the Webcam................................................................................................................23

10 Display Maintenance��24

Service Calls ........................................................................................................................................24

Annual Inspection ..............................................................................................................................24

Glossary��25

A Reference Documents ��27

B Daktronics Warranty and Limitation of Liability ��29

Introduction

1

1 Introduction

Important Contact Information

Daktronics Customer Service: 1-800-DAK-TRON (325-8766)

Project Manager: Phone Number:

Email: [email protected]

Display Identication

This section provides information that is helpful

in understanding a Daktronics digital billboard

display label. Refer to Figure 1 while reading the

table below.

Display Assembly Number

Display Serial Number

Manufacture Date

(Day/Month/Year)

BLD-0X00 Modules High X Modules Wide

RMN: Daktronics - 0200 - 12 Manufactured in Sioux Falls, SD

120/240 VAC, Single Phase, 60 HZ

Amps (L1/L2)

Total Watts

Spare Parts

Every Daktronics digital billboard is shipped with

spare parts that include commonly replaced

components. The table lists some of the

components that may be included in the spare

parts rack. Refer to Figure 2. Refer to the spare

parts inventory list contained in the bag in the

spare parts rack for a list of the parts. Contact

the Account Service Manager (ASM) to order

additional spare parts.

Spare parts are located inside the display cabinet

behind the bottom-left doors. Refer to Figure 3.

Description

Power Supply

Module

Power Supply

Air Filter

Fuse

4-Pin Mate-N-Lok Plug

Splice Tool (Sectional Displays Only)

28" SATA Cable

72" SATA Cable

Figure 1: BLD Series Display Label

Figure 2: Spare Parts in Spare Parts Rack

Introduction

2

Locate the Spare Parts Rack

Spare parts are located inside the display cabinet behind the bottom-left rear door.

Refer to Figure 3.

Open and Remove the Spare Parts Rack

1� Remove the Torx head tap screws on top of the spare parts rack.

2� Gently pull the rack downward. Refer to Figure 2.

3� Support the rack to keep it from falling.

Section 200

Section 100

Display Front

Display Rear

3" Border

Painted All

Around

Lift Eye

Power

Entrance

Signal

Entrance

Internal Control

System

Ventilation

Intake

Ventilation

Exhaust

Doors

Spare

Parts

Support

Ledger

Figure 3: Spare Parts Rack in Display

4� Lift the rack upward and outward to remove it from the display enclosure.

Remove a Module From Spare Parts Rack

1� With one hand on the module face, insert the 1/8" hex head wrench into the bottom

access hole.

2� Turn the latch release approximately a quarter-turn counterclockwise. You should feel

the module release from the display face.

3� Disconnect the SATA cables from the back of the module.

4� Remove the plug inserted into the power jack. Refer to Figure 4. Store the plug and

cable in an area free of debris for future use with replacement modules.

Figure 4: Remove Plug From

Power Jack on Spare Module

Introduction

3

Field-Replaceable Units

The table below lists names of components that can be replaced in the display and the

control system. Some of these components are located in the spare parts rack. Contact

the ASM to order components when needed.

Display FRUs Control System FRUs

ProLink Router Temperature Sensor

Line Filter VIP-5160.2

Power Supply Light Sensor - MDLS

Module Ethernet Switch

Axial Fan .4 A 115 Volt Mobotix Webcam

12 VDC Relay iBoot Bar

Two Pole Relay 500 W Heater

28" SATA Cable DMP-8000 Player

72" SATA Cable 60 V Surge Protector

SmartLinkTM (Optional)

Meraki Router

Axial Fan .16 A

Filter

Display and Control Overview

4

2 Display and Control Overview

This section describes generic power and signal paths for Daktronics digital billboards.

Refer to display-specic signal and riser drawings for component locations on your

display.

Display Control System Flow Overview

Figure 5 shows the location of the

internal control system and the

remote power control device. The

control system bay or components

may vary slightly by display. Refer

to project-specic drawings for

display control location, signal

path, and power path.

Display Power

Overview

Each 400 W power supply powers

12 modules in BLD series billboards.

In most cases, the module power

path follows the signal path.

Figure 6 shows a basic overview of

the power system in an individual

display section.

Power to the display section enters

into the power entrance and is

redistributed to the power supplies.

Refer to the layout drawing for

display-specic power distribution.

Display Signal

Overview

Refer to DWG-4118208 and DWG-4118209 for display-specic signal routing.

Signal is sent from the DMP-8000 to the VIP-5160. The VIP-5160 sends signal to the PLR,

which sends the signal to the rst module in the section. From that module, the signal is

sent to the other modules in the section. The PLR not only sends signal to the rst module

in the chain but also receives signal from the last module in the chain and creates a

redundant signal path.

Section 200

Section 100

Display Front

Display Rear

3" Border

Painted All

Around

Lift Eye

Power

Entrance

Signal

Entrance

Internal Control

System

Ventilation

Intake

Ventilation

Exhaust

Doors

Spare

Parts

Support

Ledger

Figure 5: BLD Series Component Locations

PS PS

PS

30" MOD WHIP 30" MOD WHIP 30" MOD WHIP 30" MOD WHIP

60" MOD WHIP 60" MOD WHIP

Bay 1 Bay 2 Bay 3 Bay 4

C

R1 2 3 4 5 67 8 910 11 12

1

2

3

4

5

6

7

Figure 6: Power Example - Poster (11' x 22') Display

Troubleshoot the Display

5

3 Troubleshoot the Display

Remotely Cycle Power

Daktronics BLD series displays ship

with an iBoot PDU or optional

SmartLinkTM for remote control of

the display and components. The

remote power device has four

circuits for interdependent control

of various components as shown

in the following table. The remote

power device monitors equipment

and can attempt recovery of non-

responsive equipment.

Circuits Component

1 ISP Enclosure

2 DMP-8000/VIP-5160.2

3 Display

4

If remote troubleshooting is desired, call Daktronics customer service at 1-800-DAK-TRON

(325-8766) for assistance. Do not cycle power to the components because it can take as

long as an hour to reset the circuits.

Troubleshoot the Display

Work with Daktronics help desk or experienced technicians to address display issues.

Refer to the following table for troubleshooting steps.

Issue Issue Image Troubleshooting Steps

Entire display

blank

1. Verify there is power to site by ensuring

the power supply indicators are on. If they

are on, there is power to site and it is most

likely a signal issue. If there is site power,

continue to Step 3.

2. Verify the relays for each display section

are closed and allowing power to the

display and control system.

3. Verify the ProLink Router (PLR) is receiving

power. If the LED indicator lights are on,

unplug and reestablish power to the PLR.

4. Verify the ber cables from the Digital

Media Player (DMP) to the PLR are

connected.

5. Call Daktronics customer service at

1-800-DAK-TRON (325-8766) to verify the

content that was supposed to play was

successfully uploaded / sent to the display.

Figure 7: iBoot

Troubleshoot the Display

6

Issue Issue Image Troubleshooting Steps

Content

switched

between display

sections

1. Check the ber interconnect cables

between the display sections because

they may be switched. Port A should be

connected to Port A. Port B should be

connected to Port B.

2. Check the ber cables coming from the

DMP because they may be switched.

Scattered or out

of order content

1. The SATA cable and redundant SATA

cable from the PLR to the modules may be

switched.

2. Call Daktronics help desk to verify the

translation table is correct.

Area of content

mixed up -

module ID out of

order

Verify the SATA cable path in that area is

correct by comparing it to the display signal

drawing. If not, correct the signal path.

Display too

bright

1. Immediately call Daktronics help desk and

have them blank the display.

2. Verify the Multi-Direction Light Sensor

(MDLS) is connected.

3. Inspect the area for a light source shining

on the Multi-Direction Light Sensor (MDLS).

This may cause incorrect readings. If

necessary, relocate the MDLS to a different

area.

4. Verify the MDLS is mounted correctly. If

not, remount the MDLS.

5. Have the help desk verify that the MDLS is

set to multi-direction and automatic.

Display too dim

1. Verify the MDLS is connected.

2. Verify the MDLS is mounted correctly. If

not, remount the MDLS.

3. Verify there is no debris or excessive dirt

buildup on the three MDLS windows.

4. Have the help desk verify that the MDLS is

set to multi-direction and automatic.

5. Have the help desk verify the display is

not experiencing thermal dimming due to

excessive heat.

Troubleshoot the Display

7

Issue Issue Image Troubleshooting Steps

Blank display

section

1. If applicable, verify the ber interconnects

are installed.

2. On displays with multiple sections or

power entrances, verify the relay signal

interconnect cables between the power

entrances are connected.

3. Check the modules at the beginning and

end of the affected area. This issue can

be caused by disconnected or bad SATA

cables on both of those modules. If the

module power indicator is on, there is most

likely a SATA cable issue. If the module

power indicator light is off, there is most

likely a module issue.

4. Measure site power and verify it meets

the requirements listed on the system

riser. If this issue appears when there is

white or light content, it is possible there

is insufcient power to the display. If this

is the case, work with an electrician to

establish the correct site power.

5. Verify the PLR has power and is

functioning. Disconnect and reconnect

power to the PLR.

6. Verify there is power to that display section

by checking module status indicators on

multiple modules. If there is no power,

check the power entrance on that

section.

7. Check that the relays in each display

section are closed which means that

section should be receiving power.

1 module out

1. Ensure the SATA and power cables to the

module are connected and secure.

2. A SATA cable may be damaged. Replace

both SATA cables to the module to see if

this addresses the issue.

3. It is likely a bad module. Swap the module

with a replacement module and verify

that the new module functions correctly.

12 modules out

1. Check the status indicators on the rear

of the modules. If the indicators are off,

check the power indicator on the power

supply for the affected modules. If the

power supply indicator is off and there is

power connected to the power supply,

replace the power supply.

2. If there is power to the power supply and

the modules, check the SATA cables to

the modules. It is possible the SATA cables

at the beginning and end of the affected

modules are disconnected or bad.

Troubleshoot the Display

8

Issue Issue Image Troubleshooting Steps

3 or more

modules out

in a line within

the same PLR

section

1. Check the modules at the beginning and

end of the affected area. This issue can

be caused by disconnected or bad SATA

cables on both of those modules. If the

module power indicator is on, there is most

likely a SATA cable issue. If the module

power indicator light is off, check the

power supplies for the modules at each

end of the issue are on. If not power or

signal, it is most likely a module issue.

2. Measure the site power to verify it meets

Daktronics requirements. If this issue is only

seen with white or light-colored content,

there is most likely a power issue. If there is

insufcient power, work with an electrician

to establish proper site power.

Access Internal Components

9

4 Access Internal Components

Rear Access

BLD series digital billboards have lift-off doors that

are secured with a tab in the top-left corner. Refer

to Figure 8.

1� Place ngers in the slot located at the top-left

corner of the door. Refer to Figure 9.

2� While pulling up on the handle in the center of

the door, pull the top-left corner of the door

outward so it clears the tab located on the

display back sheet. Refer to Figure 9.

3� Lift the door upward to disengage its tabs

from the slots on the display’s back sheet.

Refer to Figure 10.

4� Lower door until its top lip is free.

To completely move the door out of the way,

disconnect the lanyard connected to the door.

Front Access

Remove modules from the display front to gain

access to the cabinet’s interior. Refer to the steps

in Remove a Module (Front Access) (p�10).

Figure 8: Rear Access Door

Figure 9: Removing Door

Figure 10: Removing Door

Test and Remove Modules

10

5 Test and Remove Modules

Module Lanyard Attachment

Attach a module lanyard (located in the spare parts

rack) whenever removing a module. To attach a module

lanyard, follow these steps:

1� Attach one end of the lanyard to an attachment ring

on the top of the of the module. Refer to Figure 11.

2� Feed the lanyard over a wire rod or through a nearby

upright. Do not anchor the module to another

module.

3� Attach the other end of the lanyard to the

attachment ring on the top of the module.

Remove a Module (Front Access)

Required Tools: 1/8" hex head wrench, module lanyard (from the spare parts rack)

1� Insert the 1/8" hex head wrench into the top access

hole. Refer to Figure 12.

2� Turn the latch release approximately a quarter-

turn counterclockwise. You should feel the module

release from the display face.

3� Pull the module from the display face just far enough

to reach the back of the module.

4� Disconnect the power and SATA cables from the

back of the module.

5� Gently place the module on a clean and dry surface.

Note: If there is no place to set the module, use a safety lanyard to hang the

module from the rear of the display. Attach the safety lanyard in a way that

takes up slack on the lanyard. Carefully let the module hang while ensuring it

does not damage the LEDs, louvers, or gasket.

Reinstall the Module (Front Access)

When installing new modules, place them in the outer ring of the display.

1� Reinstall the module by aligning it with the opening.

2� Reattach the power and SATA cables.

3� Carefully hook the module into the module sheet and rotate the module top to the

module sheet. Verify that SATA and power cables are not being pinched between

the module and display face.

4� Firmly press the upper half of the module against the display face.

5� Insert the 1/8" hex head wrench into the bottom access hole and turn approximately

a quarter-turn clockwise or until you feel it latch in place.

Figure 11: Attach Safety Lanyard

to Modules

Access

Hole

Figure 12: Module Access Hole

Test and Remove Modules

11

6� Insert the 1/8" hex head wrench into the top access hole and turn approximately a

quarter-turn clockwise or until you feel it latch in place.

7� Gently pull on the module to verify it is properly

seated.

Remove a Module (Rear Access)

Required Tools: 1/8" hex head wrench, or 1/8" L-handle

hex head wrench for modules in the bottom or top rows

of a section, module lanyard (from the spare parts rack)

1� Attach one end of the safety lanyard to a lanyard

ring on the top of the module. Refer to Figure 11.

2� Feed the lanyard through the lanyard ring on the top

of the display directly below the module that will be

removed.

3� Attach the other end of the lanyard to the lanyard

attachment ring on the bottom of the module that

will be removed. Refer to Figure 11.

4� Disconnect the SATA and power cables from the

back of the module.

5� With a 1/8" hex head wrench, turn the bottom latch

gear approximately a quarter-turn clockwise to

disengage the latch.

6� With a 1/8" hex head wrench, turn the top latch gear

approximately a quarter-turn clockwise to disengage

the latch.

Note: Maintain a rm grip on the module as it is

removed from the face sheet.

7� Rotate the module in a way that allows you to guide

it through the frame opening without catching the

louvers or LEDs on the cabinet. Figure 13 shows proper

module removal from the rear. Figure 14 shows

improper module removal from the rear.

Remove Fan Plenum

Fan plenums may need to be removed because they

restrict access to modules in the bottom row of each

section.

1� Disconnect the power harness attached to the fan.

Refer to Figure 15.

2� Press inward on the bottom of each side of the fan

plenum. Refer to Figure 16.

3� When the plenum tabs disengage, gently pull the

plenum upward and remove it from the display. Refer

to Figure 17.

4� Reverse Steps 1–3 to reinstall the fan plenum.

Figure 13: Proper Module

Removal From Back

Figure 14: Improper Module

Removal From Back

Figure 15: Fan Power Harness

Figure 16: Removing Fan Plenum

Figure 17: Fan Plenum Tab

Test and Remove Modules

12

Remove a Module from Behind an ISP Enclosure

Required Tools: 1/8" hex head wrench, module lanyard

1� Remove pins from one side of the control enclosure.

Refer to Figure 18.

2� While holding the ISP enclosure, allow it to slowly

rotate open and out of the way. Refer to Figure 19.

3� Follow the steps in Remove a Module (Rear Access)

(p�11) to remove a module and Reinstall a Module

(Rear Access) (p�12) to reinstall a module.

4� If needed, remove all pins that hold the control

enclosure in place in the cabinet. Lift the control

enclosure out of the cabinet and set aside while

ensuring power and signal cables do not get

pinched.

5� Reverse Steps 1–4 to replace the ISP enclosure.

Remove the Optional SmartLinkTM

For Module Access

The SmartLinkTM, if equipped, swings out of the way for

module access.

1� Remove the pins from one side of the SmartLinkTM.

2� While holding the SmartLinkTM enclosure, allow it to

slowly rotate open and out of the way.

3� If needed, remove all the pins from the other side of

the SmartLinkTM, carefully lift the SmartLinkTM out of the

enclosure and set aside while ensuring power and

signal cables do not get pinched.

Reinstall a Module (Rear Access)

When installing new modules, place them in the outer ring of the display.

1� Rotate and carefully guide the module through the

module opening. Refer to Figure 20.

Note: To ensure proper alignment, verify the word

TOP printed on the back of the module is to

the top left of the face sheet.

2� Once the module is through the display face, align

the module with the face sheet. Ensure the lanyard

or cables do not pinch between the module and the

display.

3� After the module is in place, use the bottom module

lanyard rings or the lanyard to pull the module rmly

against the face sheet.

4� With a 1/8" hex head wrench, turn the bottom latch gear approximately a quarter-

turn counterclockwise to engage the latch.

Figure 18: Remove Pins

Figure 19: Swing ISP Enclosure

Out of Display

Figure 20: Rotate Module To

Clear Face Sheet

Test and Remove Modules

13

5� Use the top module lanyard rings or the lanyard to pull the module rmly against the

face sheet.

6� With a 1/8" hex head wrench, turn the top latch gear approximately a quarter-turn

counterclockwise to engage the latch.

7� Connect the SATA and power cables to the back of the module.

Test and Replace Display Components

14

6 Test and Replace Display Components

Test a Module

Module Status Indicators

Under normal operation, module indicator LEDs

(one on each side on the back of the module)

should ash once every two seconds. Refer to

Figure 21.

Note: When troubleshooting, it is important to

know that the module may take up to

eight seconds to change the pattern.

Perform a Module Self-Test

If a module is blank, but has power supplied to it,

perform a module self-test to diagnose a module

or SATA cable failure. To perform a self-test, follow

these steps:

Visit youtu.be/M61KEMAOdaM to view a video

about performing a module self-test.

1� Attach a SATA cable to Port A and Port B on

the module. Refer to Figure 22.

2� Disconnect the power to the power supply for

10 seconds.

3� Reconnect the power to start the self-test.

4� Verify the module is running a self-test.

Remove the SATA cable and cycle power to the

module to stop the self-test.

For more information, refer to Performing a Daktronics Digital Billboard Module Self Test

(DD1944805) in Appendix A: Reference Documents (p�27).

Replace Module Power Supplies

The power supply provides power from the power entrance to

the module. For BLD series digital billboards, the module power

supply is located on the uprights. Each power supply typically

controls 12 modules.

1� Disconnect the power coming from the power entrance to

the power supply.

2� Disconnect the power cables from the power supply to the

modules. Refer to Figure 23.

3� While holding the power supply against the upright, rotate

the power supply bracket release tab counterclockwise off

of the power supply.

4� Gently lift the power supply assembly off the upright.

LED Status

Indicators

SATA

(Signal)

Jacks

Power

Jack

Figure 21: Labeled Module Back

Figure 22: Module Self-Test

Figure 23: Power Supply

Mounted to Upright

Test and Replace Display Components

15

Test and Replace a ProLink Router

A ProLink Router (PLR) sends the signal from the DMP-8000 to

the modules via SATA cables.

Visit youtu.be/DnoPC1OYhv0 to view a video about testing

and replacing a ProLink Router.

Test a PLR

Before replacing a PLR, it may be benecial to perform a self-

test. To test a PLR, follow these steps:

1� Connect a duplex ber cable from Fiber Port A to Fiber

Port B. Refer to Figure 24.

2� Connect a working SATA cable from SATA Port A to SATA Port B.

3� Connect the power cable to the PLR. This will start the PLR self-test.

4� Wait for the test to complete. This may take up to 90 seconds. If the PLR successfully

sends and receives data through each of the ports, the letters P.A.S will appear on

the Seven Segment Display. If the letters E.r.r appear, the Seven Segment Display will

show the port numbers with issues. Refer to the ProLink Router 6X5X Installation and

Maintenance Manual (DD1735784) in Appendix A: Reference Documents (p�27) for

a list of error codes.

The PLR outputs test patterns in a specic order starting with Red, Green, Blue, and

White. The PLR sends out these patterns with full redundancy (out both port A & B at

the same time). If all of the modules change

colors, it shows they all work and that visually

the display is ne, but there could still be a

signal failure that will not show up visually

because of redundancy. The Amber/Yellow

and Magenta test patterns provide a way to

nd the normally non-visual breaks.

After it shows the White test pattern, the PLR

shows a Yellow pattern, but it only sends the

that pattern out on port A (no redundancy),

any modules that receive that command will

turn Yellow. However, if there is a signal break,

the modules will not receive the command to

turn Yellow and will remain at their previous

color, which was probably White. Refer to

Figure 25. The modules that turn Yellow are

working correctly. Modules that are not Yellow

indicate where the signal break is. If all of the

modules turn Yellow, it indicates the signal

path in the “A” direction is working 100%.

After showing the Yellow pattern, the PLR

shows the Magenta pattern, but it only sends

that pattern out on Port B. Any modules that

do not receive the magenta command

will remain at their previous color, which is

probably Yellow. Refer to Figure 26. Wherever

they do not turn magenta indicates a signal

break. If they all turn Magenta, it means the

signal path in the “B” direction is 100%.

5� Replace the PLR if the error persists after troubleshooting.

Figure 24: ProLink Router

Connected For Self-Test

Figure 25: ProLink Router Port A Test

Figure 26: ProLink Router Port B Test

Test and Replace Display Components

16

Note: It is possible to have a break in just one path. So for example, it is possible all of

the modules may turn Yellow indicating “A” is healthy, but only some of them

turn Magenta indicating a break in the “B” path that needs to be repaired.

Replace a ProLink Router

Required Tools: Phillips screwdriver

1� Access the interior of the display by following the steps provided in Section 4: Access

Internal Components (p�9).

2� Disconnect the PLR SATA and power cables.

3� Use a Phillips screwdriver to loosen the PLR assembly set screw.

4� Lift the PLR assembly to disengage it from the display.

5� Reverse Steps 2–4 to install the new PLR.

6� Verify the cables are properly seated.

Replace PLR Power Supplies

1� Disconnect the power supply from any wiring

harnesses connected to it.

2� Push down on the top leg of the wire form bracket

and rotate the power supply clockwise. Refer to

Figure 27.

3� Carefully pull the power supply outward.

4� Secure the new power supply in the bracket.

5� Rotate the bracket back into place inside the

cabinet.

6� Reconnect the wiring harnesses disconnected in

Step 1.

Replace a Display Fan

Required Tools: Side cutter, cable ties

If needed, remove the fan plenum following the

steps in Remove Fan Plenum (p�11)�

1� Locate and disconnect the 3-pin Mate-N-Lok

connector.

2� Push in on the sides of the nger guard and

rotate it to remove the fan. Refer to Figure 28.

3� Cut the cable tie holding the harness to the

plenum.

4� Remove the fan from the display.

5� Reverse Steps 1–4 to install the new fan.

6� Attach harness to the fan plenum using a cable tie. Refer to Figure 28.

Figure 27: PLR Power Supply

Mounting

Figure 28: Display Fan

Daktronics BLD Series User manual

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