Plug the PCB’s power output cable to the power supply’s
Plug the output cable from fhe
power supply to 
the PCB’s power
input connector.
Install standoffs (2).
Install screws (2).
10. Connect the switcher’s power output cable to the power supply’s
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
CThe 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.
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).
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| Extron Electronics, USA |
| Extron Electronics, Europe |
| Extron Electronics, Asia |
| Extron Electronics, Japan | Rev. A | |||
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| 1230 South Lewis Street |
| Beeldschermweg 6C |
| 135 Joo Seng Rd. |
| Kyodo Building, 16 Ichibancho | 09 07 | |||
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| Anaheim, CA | 92805 |
| 3821 AH Amersfoort, The Netherlands |
| PM Industrial Bldg., Singapore 368363 |
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| 800.633.9876 | 714.491.1500 |
| +800.3987.6673 | +31.33.453.4040 |
| +800.7339.8766 | +65.6383.4400 |
| Japan |
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www.extron.com |
| FAX 714.491.1517 |
| FAX +31.33.453.4050 |
| FAX +65.6383.4664 |
| +81.3.3511.7655 FAX +81.3.3511.7656 | |||||
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