Check Items
3
Check of
* Refer to Technical Manual, Basic Course: II-2-a.
connection parts
• Check for looseness of screws, dust, stain, etc.
• Check for stain and removal of the solar cell pattern
(two places), deformation of connection spring, removal
of welded lead plate of the secondary battery, stain of
the circuit pattern, bad contact of each part.
4
Measurement of
* Refer to Technical Manual, Basic Course: II-1-c.
coil resistance
• Remove the unit of electronic circuit and measure the
coil resistance
<The tester lead pins have no polarity>
5
Check of train
* Refer to Basic Course: II-2-b.
wheel
6
Check of dial
* Refer to Basic Course: II-2-c.
side mechanism
7
Check of solar
Remove only the secondary battery and expose the solar
cell
cell to light and see if the second hand starts moving (if the
solar cell generates power).
• Check the solar cell for breakage and stain, and check
its electrode for stain and flaking.
Measurement of
* Refer to Basic Course: II-2-d.
8
time rate
• The time rate cannot be adjusted.
• The time rate may not be measured accurately in the 2-
second interval movement or hitch movement. In this
case, apply light to the watch until the second hand
moves in the 1-second interval movement mode, then
measure the time rate.
How to Check
<Tester range: R x 10Ω>
<Measurement gate: Analog 10 sec>
12
Results and Treatments
Stain of solar cell pattern and
curcuit pattern.
→ Remove stain.
Removal of solar cell pattern,
removal of circuit pattern,
removal of welded lead plate
of secondary battery.
→ Replace parts.
• 2.0 kΩ - 2.4 kΩ
→ Normal
• Out of above range
→ Replace coil unit
• Second hand starts moving.
→ Normal.
• Second hand does not move.
→ Check connecting parts.
h
• Connecting parts are normal.
→ Replace solar cell.
• Breakage of solar cell
→ Replace solar cell.
• Stain
→ Remove stain.
• Flaking of electrode
→ Replace solar cell.
• The watch loses or gains
substantial time
→ Replace the unit of
electronic circuit