21
Check Items How to Check Result and Treatment
Measurement of
current
consumption
* Refer to Basic Course: II-1-f.
This watch uses a secondary battery instead of a battery.
Accordingly, prepare a silver battery (1.50V or higher),
then measure the current consumption according to the
following procedure.
(1) Remove the secondary battery strap, then remove the
secondary battery.
(2) Referring to Technical Manual, Basic Course, set the
silver battery (1.55V) to the adapter of the tester
correctly.
(3) Set the crown to the normal position.
(4) Set the tester.
Replace the positive + tester pin with a clip, then hitch
it on the ground spring of the circuit unit supporter.
Apply the negative – tester pin to the negative –
pattern of the unit of electronic circuit.
(5) Short the AR pattern and INT pattern simulataneously
for about 2 seconds with tweezers, etc.
• Apply one leg of the tweezers to the INT terminal
and circuit unit supporter simultaneously.
(6) Release the AR pattern first, and intermediate date
wheel (1) rotates quickly.
(7) After confirming that intermediate date wheel (1)
rotates quickly, relase the INT pattern.
Note: The tester indicates a high value at first. Wait
until the tester pointer is stabilized, then
measure the current consumption of the
movement.
Note: When measuring the current consumption, do
not apply any light to the solar cell. If any light
is applied, the voltage changes and correct
current consumption cannot be measured.
<Tester range: DC 10µA>
Current consumption by
module
Below 1.2µA
→ Good
1.2µA or higher
→ Measure unit of
electronic circuit.
Measurement of unit of
electronic circuit.
Below 0.4µA
→ Good
0.4µA or higher
→ Replace unit of
electronic circuit.
Current consumption by
module is high but that by
electronic circuit unit is low
→ A part other than circuit
seems to have a trouble.
Check for stain, bad
lubrication, deformation
of parts, and remove
causes of load.
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