Precautions For Repair: Module Qw-4791; Ac (All Clear) And Removing Of Module; Measuring Current Consumption - Casio LWQ-160DE Service Manual & Parts List

5. PRECAUTIONS FOR REPAIR: MODULE QW-4791

5-1. AC (ALL CLEAR) AND REMOVING OF MODULE

1. 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 main plate with the metallic tweezers.
The contact should be made for about two seconds.
2. On removing of the module from the case, please insert the precision screw driver between the
module and the case pointed by an arrows.
Note: After performing AC(ALL CLEAR), the mode is switched to the second hand and the indicator
hand home position adjustment mode at the home position adjustment mode.

5-2. MEASURING CURRENT CONSUMPTION

This model starts correct positioning of the second hand in the H-SET mode immediately after AC.
When it is functioning, the value of consumption current would be a little higher as the internal circuit
operation would be different from the usual status.
To measure a correct consumption current value, operate as follows.
Hold down

* After the operation above is finished, measure within one minute.
* Supply voltage is 1.5V.
and turn on the AC, and then let go.

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Metallic tweezers