TECHNICAL GUIDE
Cal. V172A/V174A
25/25
Copyright©2013 by
l
IF THE WATCH DOES NOT MOVE PROPERLY AFTER RECHARGING.
TROUBLESHOOTING
Without recharging, the power stored in a solar watch begins to decline. The second hand starts
moving at 2-second intervals indicating a diminished power reserve and eventually stops completely
unless the watch is recharged.
The Cal. V17 series uses a CPU IC. In some circumstances, a CPU IC solar watch with a second hand
moving at 2-second intervals may not return to the normal 1-second interval behavior even after the
voltage is increased by recharging. Similarly, a completely stopped watch may not resume movement
after the voltage is increased by recharging. This is not a defect but a characteristic of CPU IC watches.
The watch can be restarted by resetting the IC. The instructions that follow explain how to reset the IC.
In the event that the watch does not resume normal movement even after following these instructions,
it is advisable to take your watch in to be serviced.
Watch
stopped.
The second
hand moves
at 2-second
intervals.
Recharge by
light
satisfactory
(i.e. 3.5H
with 10,000
lux, etc.).
Recharge by
light
satisfactory
(i.e. 3.5H
with 10,000
lux, etc.).
Watch
remains
stopped.
Second
hand begins
moving
normally.
The second
hand moves
at 2-second
intervals.
Watch
stopped.
Reset the
IC.
Second hand
begins
moving
normally.
Second hand
fails to begin
moving
normally.
Watch may
have other
problems.
Troubleshooting flowchart
<How to reset the IC>
1. Pull out the crown to the second click.
2. Keep pressing down button A and B for 3 seconds
or longer.
3. Push the crown back into the normal position and
check if the small second hand moves as normal.
• It is also acceptable to reset the IC by short-circuit
in touching AC pattern of the CIRCUIT BLOCK and
metal part of rechargeable battery guard.
Resetting the IC will initialize the watch. Before starting to use the watch, it will be necessary to set the time
and adjust the STOPWATCH hands to the “0” position. Refer to “SETTING THE TIME AND ADJUSTING
THE STOPWATCH HAND POSITION” section in the Instruction booklet.
ALARM
MIN.
15
45
30
30
60
3
9
6
12
60
55
05
10
15
50
4
5
30
25
20
35
40
60
CROWN
A
B
