Welch Allyn Wall Transformer 76730

Refer to clock instructions in manual PN767036, pg. 5 & 6 for replacing clock battery and changing time.

Remove clock assembly from 767 and turn it over.

Remove three Phillips head screws using a #1 Phillips screwdriver.

Remove clock module from face-plate.

Did the set buttons come off during disassembly?

Replace the battery located on the underside of the clock module.

Disconnect wall transformer from mains before servicing

Follow instructions in Section B-1, pg. 2 to remove MH-Front

Carefully unplug spade connectors of S1 wires from spade contacts of power switch using long nose pliers

Do not cut the wire tie; it is required to keep wires away from transformer body

Carefully unplug the two-pin connectors from the emitter and detector with long nose pliers

Remove four screws from the back of the unit using a Phillips #2 screwdriver

Position the 767 third handle assembly on its back and separate the MH-Front from the MH-Back

Disconnect the handle assembly Molex connector (brown 4-pin female) from the pins on the circuit board

Note colors of wires on plug of new handle assembly

Match wire colors with color coding printed on circuit board at the pins

Follow instructions in Section E, pg. 6 & 7 to remove and replace cradle

Disconnect wall transformer from mains before servicing.

Unplug power cord from bottom of wall transformer unit.

Connect new plug to IEC connector.

Was the new plug successfully connected without disassembly?

Refer to 767 Wall Transformer Instructions PN767036.

Disconnect wall transformer from mains

Unscrew six Phillips head screws on the back of the 767

Position the 767 on its back and separate the MH-Front from the MH-Back

Slide the wire tie off of the MH-Back standoff

Disconnect the handle assembly Molex connector