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For these reasons and the software sequence to boot up the unit, if you use an oscilloscope to
judge whether a signal is OK or NG, you must check in the same order as in [List 1]. (If the ASIC
(CPU) failed to access the ROM, the ASIC cannot access the SRAM normally.)
The digital circuit actually operates according to the timing combinations of these signals. So, if
the timing of these signals is even slightly off, the circuit will not operate normally. Even of the
IC did malfunction, the output voltage level may become abnormal but the timing is accurate
according to the specifications. (If oscillation is provided accurately.) / Accordingly, the problem
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