TECHNICAL GUIDE
8T68A
Symptom
Possible causes
Solutions
STOPWATCH
One or more STOPWATCH
The relevant coil is broken.
Measure the coil block resistance.
hands have stopped moving
Replace the coil with a new one if
or show an abnormal move-
necessary.
ment.
An excessive load is being
Clean the relevant parts and
applied to the chronograph
lubr icate with an adequate
wheels due to dust or foreign
amount of oil.
par ticles adhering to them or
oil starvation.
The step motor shows an
There is a crack on the circuit
Replace the circuit block with a
abnormal movement.
block switch pattern.
new one.
The step motor has been deformed. Replace the stator with a new
one.
The buttons do not operate
The amount of oil around the
Clean the buttons and lubricate
normally.
buttons is insufficient.
appropriately.
The circuit block pat tern has
Adjust the circuit block pattern
been broken or bent.
or replace the circuit block with a
new one.
Exterior
The crown falls off.
The winding stem is not securely
Check the main plate, winding
Parts
installed. (The setting lever and
stem, set ting lever and yoke.
yoke are disengaged.)
Replace the defective parts with
new ones.
The current consumption
An excessive load is being
Adjust or remount the relevant
exceeds the standard value.
applied due to friction among
hands.
the hour, minute and STOP-
WATCH hands.
Small amount of water/
Water resistance is deteriorated.
Investigate the causes to take
blur inside of the glass
The watch has been subjected to
necessary measures , while
persists.
water pressure that exceeds the
cleaning inside of the watch.
guaranteed degree.
19/19
TROUBLESHOOTING
