Onwa Marine Electronics KR-12X8 - Manual (Page 50)

Model Type Code no. Life expectancy
KR-1238/1538
KR-1268/1568
MAF1421B
2 000 - 3,000 hours
(Including stand-by)
Table 5-2 Life expectancy of magnetron
4. The ROM and RAM are automatically checked. If NG (No Good) appears to
the right of ROM or RAM indication, contact your dealer for advice.
5. To check the keyboard, press any key except the omnipad, ACQ and power keys.
Its corresponding location on the display lights in black if the key is operating
properly.
6. To escape from the test. Press the [MENU] key.
5.5 Life Expectancy of Magnetron
The following table shows the life expectancy of the magnetron.
MSF1421B
MAF1422B
V801
43