17
Check Points
How to Check
Results and Treatments
Measurement of
battery voltage
1
[Refer to Technical Manual, Basic Course
II
-1-a]
<Tester range: DC 3V>
<Measuring point>
•
Over 1.5 V
→
Normal
•
Under 1.5 V
→
Replace the baterry.
Check of output
signals
[Refer to Technical Manual, Basic Course
II
-1-b]
<Tester range: DC 0.3V>
• The tester pointer swings
every second to the right
and left from 0V.
→
Normal
• The tester pointer does not
swing.
→
Check of connections
parts.
d
• The connections are normal.
→
Replace the unit of
electronic circuit.
(The tester lead pins have no polarity.)
Check of LC dis-
play panel and
connection parts
[Refer to the Digital Section of Technical Manual, Basic
Course
II
-2-a]
• Inspection of all segments
Pull out the crown and push the
A
,
B
and
M
at the
same time to turn on all the segments, and check for
defective ones.
• Continuity test on LC display panel, LC display panel
connection rubber and unit of electronic circuit.
Check the parts for stain, breakage, etc.
• LC display panel, connec-
tion rubber or unit of elec-
tronic circuit is not installed
correctly.
→
Install correctly.
• Parts are stained or dirty.
→
Remove stain and dirt.
• Parts are cut broken or
scratched.
→
Replace parts.
Check of con-
nection parts
[Refer to Analog Section of Technical Manual, Basic
Course
II
-2-a]
• Check the connection parts for stain and dirt.
• Check the screws for looseness.
PUSH
280-44
NO(0)JEWELS
JAP
AN
PULL
THE
CROWN
AND
PRESS 3-PB
ALL
T
OGETHER
WHEN REPLACING BA
TTER
Y.
CITIZEN W
ATCH CO.
U010
（＋）
（−）
（−）
A1
PUSH
280-44
NO(0)JEWELS
JAP
AN
PULL
THE
CROWN
AND
PRESS 3-PB
ALL
T
OGETHER
WHEN REPLACING BA
TTER
Y.
CITIZEN W
ATCH CO.
U010
（＋）
（−）
（−）
A1
2
3
4
• Parts are stained or dirty.
→
Remove stain and dirt.
• Screws are loose.
→
Fasten screws.
