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2. After the service diagnostic screen is displayed on the LCD,
release the three keys.
3. Use the PAGE button below the display to select the respective
test.
8.1. ROM device test
- Press the EXECUTE button to begin the test.
- The test result (OK or NG) is displayed within a few seconds. If the
test result is NG, not only the respective IC, but a break or short
circuit in the ADDRESS/DATA BUS as well as in any of the strobe
signal lines may be the cause ofthe failure.
8.2. RAM device test
Figure-19
Figure-20
Figure-21
15
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