TECHNICAL GUIDE
Cal. 6N76A
18/18
Movement
tRoUBlEshootiNG
The watch stops operat-
ing.
The battery has been depleted. Measure the battery voltage.
Replace the battery with a
new one.
The hour wheel and the pinion
of the minute wheel are not
properly engaged. (Or the teeth
of the hour wheel and/or minute
wheel have been broken.)
Check the relevant parts, and
replace the damaged parts
with new ones.
The hooking portions of the
circuit block cover are not
properly engaged, resulting
in poor conductivity.
Securely attach the hooks of
the circuit block cover to the
main plate.
The coil is broken.
Measure the coil block resist-
ance. Replace the coil with a
new one.
One or more wheels have
been contaminated with dirt,
dust or other particles.
An excessive amount of oil in
the movement has caused ad-
hesive forces among the parts.
(wringing)
Remove dirt or dust and clean
the contaminated wheels. Be
careful so as not to damage
the teeth of the plastic parts
while cleaning.
The current consump-
t i o n f o r t h e w h o l e
movement exceeds the
standard value.
Dirt, dust or foreign particles
are adhered to the movement.
Remove dir t, dust or for-
eign par ticle s and clean
the movement.
The driving pulse is generated
in order to compensate the
excessive load applied to the
wheels. (The oil has deterio-
rated, leaked or run out.)
If the current consumption for
the circuit block alone is with-
in the standard value range,
overhaul and clean the move-
ment par ts, and then make
the measurement again.
The current consump-
t i o n f o r t h e c i r c u i t
block alone exceeds
the standard value.
The light from outside the
movement is af fecting the
measurement.
Shut out the light, and make
the measurement again.
There is a defect in the IC
(integrated circuit).
Replace the circuit block with
a new one.
Symptom
Possible causes
Solutions
The crown falls off.
The winding stem is not se-
curely installed. (The setting
lever and yoke are disen-
gaged.)
Check the main plate, wind-
ing stem, setting lever and
yoke. Replace the defective
parts with new ones.
The current consumption
exceeds the standard
value.
A n exc e s s i ve l o a d i s b e -
ing applied due to friction
a m o n g t h e h o u r, m i n u t e
and second hands.
Small amount of water/
blur inside of the glass
persists.
Water resistance is deterio-
rated. The watch has been
subjected to water pressure
that exceeds the guaranteed
degree.
Investigate the causes to take
necessary measures, while
cleaning inside of the watch.
Adjust or remount the rel-
evant hands.
Exterior
parts
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