Extron electronics MLS 306 Guida

Power Supply Replacement Instructions

for the MLS 304/306/406

1. Disconnect the power cord from the switcher.

2. If the switcher is rack mounted, remove it from the rack.

3. Remove the 14 screws (8 on the top and 3 on each side) that secure the

switcher’s top cover, as shown below.

Lift cover

straight up.

Remove (14)

screws from

top and sides.

4. Lift the cover straight up and off.

5. Disconnect both power supply cables, as shown below. Disconnect the two-

pin power input cable from the power supply. Disconnect the power supply

output cable from the switcher’s main PCB board (not the power supply).

Remove the

screw.

Power Supply to be Removed

Remove the screw.

Disconnect the

cable from the

main board

end.

Remove the screw.

Disconnect the

cable from the

power supply’s

2-pin connector.

6. Remove the four screws that secure the power supply to the base of the

switcher. Retain at least two of the screws for installation of the new power

supply.

Extron Electronics, USA

1230 South Lewis Street

Anaheim, CA 92805

800.633.9876 714.491.1500

FAX 714.491.1517

Extron Electronics, Europe

Beeldschermweg 6C

3821 AH Amersfoort, The Netherlands

+800.3987.6673 +31.33.453.4040

FAX +31.33.453.4050

Extron Electronics, Asia

135 Joo Seng Rd. #04-01

PM Industrial Bldg., Singapore 368363

+800.7339.8766 +65.6383.4400

FAX +65.6383.4664

Extron Electronics, Japan

Kyodo Building, 16 Ichibancho

Chiyoda-ku, Tokyo 102-0082

Japan

+81.3.3511.7655 FAX +81.3.3511.7656

www.extron.com

68-1262-04

Rev. A

09 07

Install

standoffs (2).

Plug the PCB’s power output cable

to the power supply’s 2-pin power

input connector.

Install screws (2).

Plug the output

cable from fhe

power supply to

the PCB’s power

input connector.

10. Connect the switcher’s power output cable to the power supply’s 2-pin power

input connector. See the previous illustration.

11. Connect power output cable from the power supply to the switcher’s power

input connector. See the previous illustration.

12. Install the insulator and attaching screws that were removed in step 7.

Position insulator under

the heat sink.

Fasten the

insulator to the

standoffs.

Heat Sink

C The insulator must be tucked under the heat sink to protect components

from possible damage.

13.

Replace the top cover and reinstall the 14 screws removed in step 3.

Get other manuals https://www.bkmanuals.com

If the optional 5-wire power output cable needs to be installed, replace the

power supply’s power output cable with the cable shown below.

A switcher PCB with part #20-601-xxx and the

MLS 306’s PCB both use a 6-pin power output

connector. Install the included optional 5-wire

output cable on the replacement power supply

for either switcher.

8b. The MLS 306 switcher requires that the included optional 5-wire power

output cable be installed on the replacement power supply. See the previous

cable illustration.

N The MLS 306 switcher’s PCB part number is not readily viewable

because of the multi-board arrangement. However, the MLS 306 uses a

6-pin power input connector, as shown` in the illustration below, and requires that

the replacement power supply’s optional 5-wire output cable be used.

The MLS 306 uses

a 6-pin power input

connector on its PCB.

9. Secure the replacement power supply to the switcher’s PCB using two of

the screws from step 6and the two standoffs from step 7. The screws and

standoffs screw into the holes where the original power supply was attached.

See the following illustration.

7. Remove and discard the two standoff hex nuts on the underside of the

replacement power supply board as shown below. Do not discard the stand-

offs to which the hex nuts were threaded or the power supply insulator and

the two attaching screws.

Remove hex nuts (2).

8. If the switcher is an MLS 304 or MLS 406, proceed to step 8a.

If the switcher is an MLS 306, proceed to step 8b.

8a. Check the part number on the switcher’s PCB. The part number indicates

which power output cable to use with the replacement power supply. The

replacement power supply is shipped with the 8-wire cable attached.

A PCB with part #20-730-xxx

uses an 8-pin power output

connector. Use the installed 8-wire

output cable on the replacement

power supply.

A PCB with part #20-601-xxx

uses a 6-pin power output

connector. Remove the installed

output cable on the replacement

power supply and use the optional

5-wire output cable included in

the kit.

Get other manuals https://www.bkmanuals.com

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