Question about Casio PRG-40T-7 Pathfinder
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Posted on Jan 02, 2017
You need to shortcut AC point and battery. Take tweezers and touch AC and battery (+) simultaneously. Use an eyeglass to find AC point. It is marked on the movement with letters AC.
Here is the link for easy watch setting:
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Posted on Apr 04, 2009
Click on my profile (escapement), then click on Tips and Tricks. There you will find link to all CASIO watch manuals. Rate me, please .
Posted on Apr 09, 2010
The silver spring goes in a very small hole in the plastic casing on the bottom side of the watch located next to the wristband under the sensor. Hope this helps
Posted on Sep 11, 2008
SOURCE: i replaced all four batteries
Casio battery changes are quite tricky.If you look closely at the watch module there is a place for the battery and a v-small depression usually circular on the silver module .There will be the letters AC in small writing.You need to touch the depression AC and the battery at the same time with a conductive tweezers.This shorts the module and re sets the watch.Make sure any seals go back in to protect from water/dust.
Posted on Aug 19, 2010
This reset trick works with other Casio Alarm Chrono digital watches, such as my old Model W-720, similar to your F91-W. After the new lithium coil cell is installed and secured with the spring clip, the watch may show random segments in the LCD display or may simply be blank. Insert a sewing needle, paper clip, or blade of a small jeweler's screwdriver into the hole on the back of the movement stamped "AC" (All Clear) to momentarily connect the gold plated contact at the bottom of the hole to the stainless steel battery clip. The battery clip in most such Casio watches is connected to the "+" terminal of the coin cell. This will reset the CMOS chip and it should start up with the watch displaying 12:00 and the date at 1-1. Then, use the control buttons to set the time and date in the normal fashion.
Posted on Oct 29, 2008
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