Seiko 7B24 Manual page 70

Attrouble
Whenthewatchis
unabletoreceivea
radiosignal
Reception
Thereceptionresults
ofaradio
havefailedandthe
signal
secondhandpoints
toN(thewatchdoes
notreceivearadio
signal).
Thestoppedwatchwasexposedto
Charging
anadequatelightforlongerthan"the
thesolar
timerequiredtofullychargethewatch,"
however,itdoesnotresumeitsnormal
battery
one-secondintervalmovements.
150
Possiblecauses
Thewatchwasmovedwhileitwasreceivinga
radiosignal.
Thewatchwasleftwheretheradiosignalwas
weakorwhereitwasunabletoreceivearadio
signal(page100).
Transmittingstationsmayhavestopped
transmittingradiosignalsforsomereason
(Transmissionstop).
The watch is set to a time zone other than
a  r a d i o  s i g n a l  r e c e p t i o n  r a n g e  (a  w r o n g
transmittingstationisselected).
Thelightistooweakorthemanneroflighting
thewatchhasbeenalteredwhilethewatchis
beingcharged.
TheBuilt-inICofthewatchhasfallenintoan
unstablecondition.