REMARKS ON REPAIRING CAL. 7D46A, 7D48A
Cal. 7D** is an Automatic Generating System analog quartz watch equipped with
piezoelectric motor, featuring the perpetual calendar and automatic adjustment function.
Although Cal.7D** features new functions, the experience of repairing the existing
KINETIC series watches will be helpful.
In repairing Cal. 7D**, you are requested to have the full knowledge of its functions and
strictly observe the repairing and checking instructions provided in this guide so that the
watch will be repaired correctly.
FEATURES OF CAL. 7D46A, 7D48A
Cal. 7D** features the power save function that automatically stops the hands from
moving if the watch is left untouched for a certain period of time. Even if the watch is in
this state, the perpetual calendar continues to count the date until the stored electrical
energy is depleted. When you decide to use it again, swinging the watch several times will
activate the time relay function, which starts the hands moving quickly to indicate the
correct time and resume the normal operation. Cal. 7D** is an innovative KINETIC
model; it conserves the stored electrical energy by stopping the hands while it is not in
use, and, at the same time, it completely eliminates the cumbersome time setting
procedure when it is used again.
1.
POWER SAVE FUNCTION
While the watch is not in use, the hands stop automatically to minimize the electrical
energy
consumed. This is called “the power save function”. Though the hands stop,
the built-in IC continues to compute the time, keeping the watch ready for the next
use.
<The automatic power save function>
If the watch is left untouched for approximately 24 hours, the power save function is
automatically activated.
2.
TIME RELAY FUNCTION
While the power saving function is working, the built-in IC continues to compute the
time though the hands stop. As the watch detects a certain amount of electricity
generated by swinging it, the hands are automatically adjusted to the time retained
inside the watch, resuming the normal operation. This is called the “time relay
function”. As it is activated, the hour and minute hands are adjusted first, then,
followed by the second hand.
By only swinging the watch for 2 to 3 seconds, the time relay function will be
activated.
(Caution)
It may take approximately up to 64 seconds (32 seconds on average) to activate
the time relay function.
The accuracy of the time computation by the built-in IC is equivalent to that of
conventional quartz watches. Especially when the watch has been left untouched
for a long time before the time relay function is activated, the time indicated by the
hands may include a certain amount of time loss or gain within the range of the
accuracy of the watch (
±
15 seconds per month) that has accumulated during that
time.
3.
CONTINUOUS OPERATING TIME
●
The continuous operating time varies depending on the stored electrical energy inside
the watch. In the case that the fully charged watch enters the power save mode,
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