CASIO QW1498 (SM541)
Manual de Servicio

6. PRECAUTIONS FOR REPAIR: MODULE QW-1498 6-1. BATTERY REPLACEMENT
1. Open the back cover and see the display. When �CLOSE� appears on the display, close the back cover and wait for 2 minutes until �CLOSE� disappears. Then open the back cover again. 2. Replace the battery with new one. 3. Perform AC operation according to the procedure 6-2. 4. Close the back cover according to the procedure 6-3. When �WAIT� appears on the display, wait 12 minute at most. Watch can be used after �WAIT� disappears.

6-2. AC (ALL CLEAR)
Perform AC (ALL CLEAR) when inserting a new battery, or else the memories and/ or counters may give erratic displays. Touch the AC contact and the positive (+) side of the battery or main plate with the metallic tweezers. The contact should be made for about two seconds.

Metallic tweezers

6-3. ON CLOSING THE BACK COVER
On closing the back cover, be sure to touch the back cover, piezo and steel plate with the metallic tweezers like AC operation. The contact should be made three times as follows. 1. Between the piezo and the steel plate 2. Between the piezo and the back cover 3 3. Between the steel plate and the back cover This procedure is for removing of electricity from the back 2 cover, and should be made always on closing the back cover. 1

� 12 �

Back cover Piezo Steel plate