Specifications

21
TECHNICAL GUIDE
Cal. 4F32A, 8F32A, 8F33A, 8F35A
● Time accuracy
• The time accuracy measurement should be made in an environment with the temperature at the range
of 23° C ± 2° C and humidity between 50% and 60%.
Normal loss/gain at a normal temperature (23° C) : +0.020 ~ +0.140 sec./day
[A] Check the loss/gain of the watch with the case back closed following the procedure below, and
determine the method of adjustment and repair.
Measuring procedure Measured loss/gain (–/+) Method of adjustment/repair
1 Set the gate of the quartz tester
to “10”.
2 Pull the crown to the second
click to stop the second hand.
3 Place the watch on the
microphone with its 3 o’clock
side up, and read the loss/gain.
Normal : +0.020 ~ +0.140
Defective : –0.012 ~ +0.019
+0.141 ~ +0.204
Defective : –0.013 or smaller
+0.205 or greater
➡ Time accuracy adjustment is
not necessary.
➡ Adjust the time accuracy.
➡ Replace the circuit block with
a new one.
Check the time accuracy.
(Then, adjust the time accuracy.)
➡➡
[B] Time accuracy adjustment by pattern cutting
Cut and remove the overhanging pattern with tweezers to adjust the
time accuracy.
Notes:
* The loss/gain indicated by the tester varies slightly from measurement to measurement. Therefore,
make several measurements to get an average loss/gain.
* When measuring time accuracy, leave the watch untouched for 30 minutes after it is placed on the
microphone. Then, start the measurement.
Notes:
* After cutting the pattern, check that it is completely detached.
* Take care not to let the cut pattern get inside the movement.
Pattern cutting combination and adjustment range
By cutting one or both of the patterns P1 and P2, the loss/gain of
the watch can be adjusted by an amount between –0.064 and
+0.032 sec./day.
: Cut
: Connected
Pattern
P2 P1
Amount of loss/gain
from base accuracy
–0.064
–0.032
+0.032
Note: Once the patterns are cut off, reconnecting them by soldering may not adjust the loss/gain by
the amount specified in the table above and may also change the temperature characteristics
of the watch. Adjust the loss/gain, therefore, only by cutting the patterns.
P2P1