7-2-2 OSCILLATION CIRCUIT
This circuit is to generate the base clock for calculating time and the synchro clock for transmitting data from and to the
inside logic elements of the IC1(MICOM). Be sure to use the authentic parts since the calculating time by the IC1 may be
changed or it will not work if the OSC1 SPEC is changed.
7-2-3 RESET CIRCUIT
The RESET circuit is for allowing all the functions to start at the initial conditions by initializing various parts including the
RAM inside the MICOM (IC1) when the power is initially supplied or the power supply to the MICOM is restored after a
momentary power failure. For the initial 10ms of power supply, ÔLOWÕ voltage is applied to the MICOM RESET terminal.
During a normal operation, 5V is applied to the RESET terminal. (If a trouble occurs in the RESET IC, the MICOM will not
work.)
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Summary of Contents for B712Y*B
Page 36: ...7 5 2 REPLACEMENT PARTS LIST 36 ...
Page 37: ... 37 ...
Page 38: ...7 5 3 PWB ASS Y DISPLAY AND PARTS LIST 38 ...
Page 39: ... 39 7 5 4 PWB ASS Y DISPLAY I MICOM AND PARTS LIST ...
Page 40: ... 40 7 5 5 V LED DISPLAY PART LIST ...
Page 41: ...7 6 PWB DIAGRAM 41 ...
Page 42: ... 42 ...
Page 44: ... 44 149D 155J 149B 120 118 119 138 120 110 111 149B 405A 140A 133 405C 405C 404A ...