19
Check Points
How to Check
Results and Treatments
• Tester pointer does not
swing.
→
Replace the electronic
circuit unit.
• Tester pointer swings.
→
Normal
d
• Perform inspection in *2.
d
Normal indication.
→
O.K.
[Refer to Technical Manual, Basic Course
II
-1-d]
*1. Set the movement in the case, and check output of
alarm signal with the case back removed.
(1) Set the watch in alarm mode.
(2) Apply + lead pin to battery surface and – lead pin
to pattern of buzzer contact spring, them press
A
button.
<Tester range: DC 0.3V>
*2. If the output of alarm is normal, perform the following
inspection.
•
Check the piezo-electric element of vibrating plate
for cracks and breakage.
•
Check the buzzer contact spring for bend and
deformation.
•
Check the pattern of electronic circuit unit for dust
and stain.
Check of alarm
mechanism
Check of EL
panel connection
1. Confirmation of battery voltage
2. Check of EL panel connection
• Check the EL panel for breakage. Particularly check
the electrode pattern on the back side for stain,
breakage, etc. which can lower electrical continuity.
• Confirm that the EL connection spring is in contact
with the EL panel and electrode pattern normally.
If any cause is not found by inspections 1 and 2, the EL
panel must have been deteriorated. Replace the EL panel.
•
Over 1.5 V
→
Check EL panel con-
nection.
•
Under 1.5 V
→
Replace battery.
•
Trouble of EL panel
→
Replace EL panel.
•
Deformation of EL connec-
tion spring
→
Repair or replace.
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
11
12
