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A: 9300 S.W. Gemini Drive Beaverton, OR 97008 USA W: www.biamp.com
APR 2020
585.0199
ESD Safety Instructions
ATTENTION: Read “Requirements for ESD Safe Work Stations”
before proceeding to card replacement instructions.
Requirements for ESD Safe Work Stations
Biamp Systems requires any eld service of Tesira products to be
performed on ESD-safe (Electrostatic Discharge) work stations. This will
minimize the chances of damaging the sensitive circuitry contained in
Biamp products. Damage is typically not noticeable to a user and may
not occur immediately. See Figure 1 for an example of a factory ESD-
safe work station.
Other options for an ESD-safe work station is using a conductive mat,
conductive wrist-strap and grounding cord as shown in Figure 2.
• The wrist strap is electronically connected to mat and chassis of
the unit under test
• The grounding cord connects to a common connection with the
wrist strap ground which is connected to a ground point (electrical
outlet)
Grounding will drain most of the static charge o to ensure the voltage
potentials of the technician and equipment remain equal.
When working outside a shop environment (in the “eld”) a fully protected,
ESD-safe work station may not be practical. In this situation, it is critical to
ensure the technician and equipment under test are at the same voltage
potential. This applies to ESD-sensitive parts that may be removed.
Damage from ESD occurs from the rapid discharge of electricity through
circuitry or components. Taking proper ESD precautions makes sure no
discharge can occur, as the voltage between the user and the unit is the
same.
Figure 3 shows the minimum ESD precautions (ESD wrist strap
connected to the unit under test).
Figure 1 Factory ESD-Safe Work Station
Figure 2 Wrist Strap and Grounding Cords
Image 3 Minimum Conguration Workstation
page 2 Installation and Operation Guide AudiaFLEX Card Kit
An ESD-safe work mat may be rolled out and trimmed to t a clean,
solid work surface. Mat surface should be cleaned weekly with a mild
detergent and water or a static-control cleaning solution. Solvents should
not be used to clean ESD-safe surfaces as they can compromise the
conductive nature of the work surface. Food should never be consumed
at an ESD-safe work station.
Figure 4 shows an example of an ESD-safe work surface that includes
a wrist strap with a grounding cord and a grounding cord that snaps
into the ESD mat. The ESD mat grounding cord connects to a common
connection with the wrist strap ground which is then connected to a
ground point (electrical outlet).
Wrist straps should be adjusted for a comfortable, snug t. They must be
in contact with bare skin and never worn over cu or sleeve. The ground
cord snaps directly to the buckle on the wrist strap.
Other ESD work station options include heel-strap grounders as well as
oor mats that may also be connected to a common grounding point.
It is the responsibility of the technician to make sure work performed is
done so in an ESD-safe environment. ESD products described herein
are available from numerous manufacturers/distributors.
Chassis Removal
To remove the lid to access the I/O cards or CobraNet module, unplug the
AudiaFLEX and place it on a properly grounded anti-static mat. Follow
all ESD precautions as described previously in this document. Remove
any phoenix connectors attached to the rear of the unit.
NOTE: If adding cards, reset/initialize the Audia before removing
the top cover.
Rear panel
a. Using a #1 Phillips screwdriver, remove the two screws that
attach the I/O cards to the chassis. The screws do not need
to be removed on channels without I/O cards at this time (a
metal plate covers the holes).
b. Remove the one screw located between the power entrance
and the serial port connector.
c. Remove the three screws along the bottom of the rear-panel
chassis.
Side panels
a. Remove the four screws on each side panel (eight screws in
total).
NOTE: Do not remove the two screws on the left side (if looking at
the rear panel) that are inset from the rest of the screws.
Top panel.
a. Remove the three screws from the top panel that are located
next to the front panel.
b. Remove the top panel by lifting it away from the side panels
(placing hands towards the front panel) and pulling towards
the rear.
Figure 4 - ESD Safe Work Surface
AudiaFLEX Card Installation and Operation Guide page 3
Card Replacement
1. Remove the screw that attaches the I/O card to the main PCB as
shown in Figure 5.
2. Grasp the front and back of the PCB gently and lift upwards to
remove the card.
3. Remove the new card from the anti-static bag and place the old
card in the bag. Put the new card in the same slot as the one
removed.
NOTE: Make sure the pins align properly with the header. There
should not be any pins left loose.
4. Secure the I/O card to the main PCB using the previously
removed screw.
5. Secure the top panel with the previously removed screws.
NOTE: If the card replaced is dierent than the one removed,
the Audia will need to be reset in Device Maintenance to clear
the conguration.
6. After powering the unit, the status LED will be red until the
conguration is cleared.
NOTE: If the replaced card is the same as the one removed,
the status LED should remain green when powered up and
the vice will not need to be reset.
Adding a Card
1. Reset/initialize the Audia and then remove the top panel as
detailed in Card Replacement and Chassis Removal above.
2. Remove the one screw from the slot that the new card will be
placed in.
3. Remove the new card from the anti-static bag and install it in the
desired slot.
NOTE: Make sure the pins align properly with the header. There
should not be any pins left loose.
4. Attach the I/O card to the main PCB using the removed screw.
5. Remove and discard the metal plate covering the holes on the
chassis where the new card resides. See Figure 6.
6. Replace the top cover.
NOTE: Use the two 4-40 machine screws provided with the new
I/O card when replacing the to cover.
NOTE: If adding a PA-2 card, see additional content below
regarding the power harness.
Figure 5 - I/O Screw Attachment
Figure 6 - Rear Chassis
page 4 Installation and Operation Guide AudiaFLEX Card Kit
PA-2 Card Power Harness
After replacing or adding a PA-2 card in a unit, connect a power harness
into the back of the card. If the unit does not have a PA-2 power harness
installed, do the steps that follow.
NOTE: Each PA-2 card kit includes a power harness. Only one
harness is required to power all PA-2 cards.
1. See Figure 7 and remove the two screws that secure the power
supply shield to the power supply. Remove the three screws that
secure the power supply to the frame.
2. Remove the power supply and harness.
3. Install the harness as sown in Figure 8.
a. Connect the yellow connector into each PA-2 card.4.
b. Connect the white connector into the power supply.
c. Install and trim tie wraps as shown.
Figure 7 - Rear Chassis
4. Reinstall the power supply and power supply shield.
Replacing a CobraNet Module
1. Remove the top panel as detailed in Chassis Removal above and
remove the two screws that attach the power entrance/CobraNet
module bracket to the bottom chassis.
2. Remove the connector from the serial port to the main PCB.
3. Remove the connector from the power entrance to the power
supply module.
4. Remove the 5/16th hex nut that attaches the ground lug to the
chassis.
a. Carefully lift the metal bracket upwards to remove the
CobraNet module.
5. Remove the new module assembly from the antistatic bag and
place the old module in the bag. Place the new CobraNet module
assembly in the same position as the old one.
Figure 8 Harness Installation
AudiaFLEX Card Installation and Operation Guide page 5
NOTE: Be careful not to bend the pins on the main PCB. Make
sure all pins are seated and that no pins are left loose.
6. Connect the cable from the serial port to the main PCB and
connect the cable from the power entrance to the power supply
PCB (see Figure 9).
7. Attach the ground lug to the pem screw using the 5/16th hex nut
removed in step 4 above.
Reassembly
1. Upon completion of card installation(s) put the top cover back on
the chassis.
2. Make sure all Ethernet and male phoenix connectors are properly
aligned with the rear panel.
3. Install the 11 screws (course thread with no washer) that secure
the side panels (eight total screws) and top panel (three total
screws) to the chassis.
4. Install the two ne-thread screws and washers into each
populated I/O card threaded bracket.
Figure 9 CobraNet Module Connections
A: 9300 S.W. Gemini Drive Beaverton, OR 97008 USA W: www.biamp.com
APR 2020
585.0199
CONTACT US
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Warranty
Please contact support for factory service or visit the website to locate your
nearest Authorized Field Service Station. You must obtain a Return Authorization
(R/A) number prior to the return of your product for factory service.
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