Plug the PCB’s power output cable
to the power supply’s 2-pin power
input connector.
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
Plug the output
cable from fhe
power supply to
the PCB’s power
input connector.
switcher’s top cover, as shown below.
Lift cover
straight up.
Install
standoffs (2).
Remove (14)
screws from
top and sides.
Install screws (2).
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.
4. Lift the cover straight up and off.
Position insulator under
the heat sink.
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.
Remove the screw.
Disconnect the
cable from the
main board
end.
Disconnect the
cable from the
power supply’s
2-pin connector.
Fasten the
insulator to the
standoffs.
Heat Sink
Remove the
screw.
Remove the screw.
Power Supply to be Removed
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.
C The insulator must be tucked under the heat sink to protect components
from possible damage.
68-1262-04
Rev. A
09 07
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
13. Replace the top cover and reinstall the 14 screws removed in step 3.
+81.3.3511.7655 FAX +81.3.3511.7656
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