Seiko S770 Instructions Manual page 23

Troubles
The watch
temporarily gains
or loses time.
Wrong
time
indication
The watch indicates
the correct minutes
and seconds, but is off
by one or more hours.
The display does not respond
to any button operations.
The display does not switch
Button
7
when a button is pressed.
operation
The display switches
slowly when a button
is pressed.
174
Troubles
The display went
blank.
I fi nd the black and
white particles are
Display
occasionally reversed.
The message "TOO
HOT USE UNDER 50 ℃"
appears on the display.
The message "TOO
COLD USE OVER -5 ℃"
appears on the display.
7
Blur on the dial
Others
glass persists.
176
Possible causes
Radio wave reception was interfered by external
factors. (Reception failure)
The watch has been left in an extremely high or
low temperature for a long time.
The home time city is not appropriately designated.
→ How to check the home time city P106
DST (Daylight Saving Time) of the home time is
not correctly set.
The battery is running low.
The switching speed of the Electrophoretic
Display is slower compared to other types of
displays such as LEDs.
Possible causes
The battery is running low.
The temperature of the watch has risen above 50℃ .
(When a button is pressed, the "TOO HOT USE
UNDER 50 ℃" message appears on the display.)
In the time display, once every 10 minutes and
each time when the mode is switched, the black
and white particles are reversed.
The temperature of the watch has risen above 50 ℃.
The temperature of the watch has dropped below ‒ 5 ℃.
Water has entered into the watch due to
deterioration of the packing etc.
Solutions
① Try receiving radio waves in a diff erent place with a good reception environment.
② Conduct manual reception as needed.
① When the watch returns to normal temperature, this condition will be corrected.
② After returning the watch to normal temperature, if the watch indicates the wrong time, conduct manual reception.
If the condition is still not corrected to normal, consult the retailer from whom the watch was purchased.
Reset the home time city.
Correct the DST (Daylight Saving Time) setting.
Recharge the watch.
This is not a malfunction.
Wait until the watch fi nishes switching its display before proceeding to
the next operation.
Solutions
Recharge the watch.
Move the watch to a cool place and wait for a while until the watch
shows the normal time display.
This is not a malfunction.
(This is a programmed action to maintain the display quality.)
Move the watch to a cool place and wait for a while until the watch
shows the normal time display.
Move the watch to a warm place and wait for a while until the watch
shows the normal time display.
Consult the retailer from whom the watch was purchased.
※ For the solution of troubles other than the above, consult the retailer from whom the watch was purdased.
Ref. page
P117
P156
−
P162
−
P120
P120
P134
7
−
175
Ref. page
P134
−
−
−
−
7
−
177