Accuracy Checking - Casio GW-9400-1 Service Manual & Parts List

7-2. ACCURACY CHECKING

Check the accuracy of the module with a quartz timer after switching the module to [ ACCURACY
CHECKING MODE ].
The operations are shown below:
1) SWITCHING TO [ ACCURACY CHECKING MODE ]
While pressing the
Then the LCD drive signals are changed to 1/4 duty drive signals so that
you can check the accuracy with the quartz timer.
Measure the accuracy value on the following conditions.
SENSOR
LCD
2) CANCELLATION OF THE [ ACCURACY CHECKING MODE ]
Press ,
 
Then the watch returns to the Timekeeping mode.
The watch will also automatically return to the timekeeping mode in 1 ~ 2 hour(s) without any op-
eration.
Timekeeping
mode
Except for
Except for
button, press
 
GATE TIME
16 seconds
, , or .
 
+ +
,
Accuracy cheak
(1/4Duty)
Light alternates
and buttons in the normal timekeeping mode.

Except for ,
Home city
NYC / LON / BER / HKG / TYO
All lit
(1/5Duty)
Any Button
– 17 –
QW-3410
QW-3410
Except for ,
Home city change
Module No.
(3414 3)
No test is performed
ROM Ver.