Time Calibration Signal Test - Casio ECW-M300E Service Manual

7-77

TIME CALIBRATION SIGNAL TEST

A signal reception failure may be caused by a number of of reasons.
Follow the steps shown in the flowchart below to run the signal receiving test.
START
Check the Receiving Station
MANUAL Reception
Reception OK?
YES
OK
Insufficient Signal
The time calibration signal may not be properly received under the following conditions.
• The strength of the signal has changed due to season or time of day
• The watch is placed in the reinforced concrete building
• There is a broadcasting station nearby
• Strong enough signal cannot be received due to the position of the watch
The signal used for the local time setting differs from that for the facility testing in China using TEM cell.
* For the local time calibration signal, use the normal mode.
* To check the signal using TEM cell, perform the inspection in the Test Mode.
7-7-17 MANUAL/AUTO Reception
To change the signal station, you may easiliy do so by using the test mode in P.�2 [ CONFIGURING
HOME CITY ] For details of MANUAL and AUTO reception modes, refer to the Operation Guide.
MANUAL Reception
While on the Timekeeping mode, press
position. While receiving signals, the Mode hand indicates "Work (W)" position and reception is
enabled (LCD 1: GET; if signal cannot be received, the LCD 1 shows ERR). Press
minutes to return to the Timekeeping mode.
* Press any button to end the manual reception or the reception result display and return to the normal
Time Keeping Mode.
AUTO Reception
Turn on the AUTO Reception setting. When AUTO Reception is turned ON, the calibration signal is
automatically received up to 6 times from midnight through early
morning.
(If reception is successful once, the subsequent AUTO reception
will not be conducted on the same day.)
* To check whether the calibration signal was received
successfully, press
indicator.
(The LCD 1 indicates GET if successful, and ERR if failed)
Perform the test in "MANUAL Reception"
or "Time Calibration Signal Test mode".
NO
AUTO Reception
YES
Reception OK?
NO
Failure
for two seconds. The Mode Hand moves to "Ready (R)"
A
and determine by the position of the
A
– �� –
"Insufficient Signal" may also be the reason
for the signal receiving fault.
Location of the buttons and name of
�� – –
QW-5117
or wait for � – 2
A
the hands
LCD 1
Mode hand