Seiko 4R57 Manual - Page 10

Problem Possible causes Solutions English The watch gains/loses time temporarily. The watch has been left in extremely high or low temperatures for a long time. The watch was brought into close contact with a magnetic object. You dropped the watch, hit it against a hard surface or wore it while playing active sports. The watch was exposed to strong vibrations. The watch has not been overhauled for more than 3 years. Normal accuracy will resume when the watch returns to normal temperature. Normal accuracy will resume when the watch is kept away from close contact with the magnetic source. If this condition persists, consult the retailer from whom the watch was purchased. Normal accuracy will not resume. Consult the retailer from whom the watch was purchased. Consult the retailer from whom the watch was purchased. The date change at 12 o'clock noon. AM/PM is not properly set. Advance the hands by 12 hours. The glass is blurred and the blur persists for a long time. Water got inside the watch due to the deterioration of the gasket, etc. Consult the retailer from whom the watch was purchased. • For the soluton of troubles other than listed above, contact the retailer from whom the watch was purchased. 18 ACCURACY OF MECHANICAL WATCHES English ● The accuracy of mechanical watches is indicated by the daily rates of one week or so. ● The accuracy of mechanical watches may not fall within the specified range of time accuracy because of loss/gain changes due to the conditions of use, such as the length of time during which the watch is worn on the wrist, arm movement, whether the mainspring is wound up fully or not, etc. ● The key components in mechanical watches are made of metals which expand or contract depending on temperatures due to metal properties. This exerts an effect on the accuracy of the watches. Mechanical watches tend to lose time at high temperatures while they tend to gain time at low temperatures. ● In order to improve accuracy, it is important to regularly supply energy to the balance that controls the speed of the gears. The driving force of the mainspring that powers mechanical watches varies between when it is fully wound and immediately before it is unwound. As the mainspring unwinds, the force weakens. Relatively steady accuracy can be obtained by wearing the watch on the wrist frequently for the self-winding type and winding up the mainspring fully everyday at a fixed time to move it regularly for the wind-up mechanical type. ● When affected by external strong magnetism, a mechanical watch may loss/gain time temporarily. The parts of the watch may become magnetized depending on the extent of the effect. In such a case, consult the retailer from whom the watch was purchased since the watch requires repair, including demagnetizing. 19