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How to Calibrate a Quartz Chronograph
by koimaster on Tue Feb 09, 2010 4:15 pm
http://www.righttime.com/rt/quest.htm
Quote:
Q. Chronograph long hand on my quartz Tag Heuer chronograph diver model dosen't return to "0" anymore, is it a serious repair?
A. Not at all. It is very simple to correct. This simple repair works on 2 most popular Swiss made qaurtz chronograph movements that have been used by many brands like Tag Heuer, Breitling, Chase-Durer, Tissot, Xemex, Tutima, Belair, Omega, Longines, and many, many more for the past 20 years and they are: 22 jewels ETA 251.272 with 3 chronograph hands and 27 jewels ETA 251.262 with 4 chronograph hands. The "0" position of every chronograph hand is a logical one and not physical, like in a mechanical watch, so its the circuit board that is controlling where each hand returns to and if watch was dropped or jolted hard, especially the long sweep second recording hand or minute recording hand, can get out of "whack" and return to few minutes before or after "0"/"12".
To correct this problem you need to:
Start the chronograph with the button at "2" o'clock (usual position).
Stop the chronograph with the same button.
Return all hands to zero with "4" o'clock button (usual position) - it doesn't matter where they actually return, as long as they return.
Pull the crown OUT into the time setting position, second click or all the way out position
Keep pressing the button at "2" and change the "return to" position of 60 seconds sweep second hand.
Press the button at "4" to correct the 1/10sec small hand at "2" o'clock register.
Push the crown IN one notch into a calendar changing mode and repeat the same procedure with 2 buttons and 2 remaining hands( only 1 remaining on a 3 hand chronograph)
Push the crown all the way in (in case of dive/sport watches SCREW DOWN the crown tight!)
Now if you start, stop and return to zero your stopwatch - all hands will return to the zero you set them to.
Nothing to it...but for strange reason, not a single watch factory or ETA ever published this information for the consumers!
The same technique, but a different routine and sequence will work on most quartz chronograph models made by ETA, Seiko and Citizen.
Quote:
Q. Chronograph long hand on my quartz Tag Heuer chronograph diver model dosen't return to "0" anymore, is it a serious repair?
A. Not at all. It is very simple to correct. This simple repair works on 2 most popular Swiss made qaurtz chronograph movements that have been used by many brands like Tag Heuer, Breitling, Chase-Durer, Tissot, Xemex, Tutima, Belair, Omega, Longines, and many, many more for the past 20 years and they are: 22 jewels ETA 251.272 with 3 chronograph hands and 27 jewels ETA 251.262 with 4 chronograph hands. The "0" position of every chronograph hand is a logical one and not physical, like in a mechanical watch, so its the circuit board that is controlling where each hand returns to and if watch was dropped or jolted hard, especially the long sweep second recording hand or minute recording hand, can get out of "whack" and return to few minutes before or after "0"/"12".
To correct this problem you need to:
Start the chronograph with the button at "2" o'clock (usual position).
Stop the chronograph with the same button.
Return all hands to zero with "4" o'clock button (usual position) - it doesn't matter where they actually return, as long as they return.
Pull the crown OUT into the time setting position, second click or all the way out position
Keep pressing the button at "2" and change the "return to" position of 60 seconds sweep second hand.
Press the button at "4" to correct the 1/10sec small hand at "2" o'clock register.
Push the crown IN one notch into a calendar changing mode and repeat the same procedure with 2 buttons and 2 remaining hands( only 1 remaining on a 3 hand chronograph)
Push the crown all the way in (in case of dive/sport watches SCREW DOWN the crown tight!)
Now if you start, stop and return to zero your stopwatch - all hands will return to the zero you set them to.
Nothing to it...but for strange reason, not a single watch factory or ETA ever published this information for the consumers!
The same technique, but a different routine and sequence will work on most quartz chronograph models made by ETA, Seiko and Citizen.
_________________
1946-2006
“Your heart was warm and happy
With the lilt of Irish laughter
Every day and in every way
Now forever and ever after."
koimaster- Administrator
- Join date: 2009-12-17
Location: Oregon
Re: How to Calibrate a Quartz Chronograph
by koimaster on Thu Sep 29, 2011 8:43 pm
_________________
1946-2006
“Your heart was warm and happy
With the lilt of Irish laughter
Every day and in every way
Now forever and ever after."
koimaster- Administrator
- Join date: 2009-12-17
Location: Oregon
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