Polycom DOC2237A Hardware Installation Manual page 157

4. Optional. Remove the two jack connectors from the fan panel to
completely remove the fans from the MCU.
5. Disconnect the AC input (J1) and the 12V/5V Sense connectors (J2).
6. Disconnect the +5V and -5V power cables using a 9/16" (13 mm) M8 nut
driver.
Tighten the two flat washers; the spring washer and the nut back to their +5V
and -5V screws on the faulty unit to be shipped to the manufacturer. These
items are delivered with the new power supply module.
7. Using a Phillips screwdriver, loosen the six spring-loaded screws on the
front panel of the MGC-50 that secure the Power Supply Module.
PWR
OUT
MGC Hardware and Installation Manual
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