Panasonic HX-WA20EB, Руководство по обслуживанию

Страница: 9 / 71

9
3.5. Formatting
3.6. Baking of IC and P.C.B.
The baking mentioned here is the way of dehumidification of IC and P.C.B..
It's possible to improve the success rate of IC replacement for repair by baking of IC and P.C.B..
When replacing the hygroscopic IC and P.C.B., the problem of IC crack or foil pattern breaking in the P.C.B. might sometimes occur
by rapid heating.
For that case, please test the baking of IC and P.C.B. before replacing IC in order to prevent the above mentioned problem.
IC( Service parts) and P.C.B. should be put in the heater together.
Reference value for baking temperature and time is as follows.
• Baking temperature and time (Hour)
80
°
C / 12 hour
[ Note ]
This setting value of temperature and time (Hour) is actually used in Japan.
An appropriate setting value changes depending on the environmental condition of the work place in your country.
However, the setting temperature must not exceed 125
°
C.