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6-2. Reset Circuit
The reset circuit initializes the microcomputer program when Power is “ON” from “OFF”.
Low voltage at pin 48 resets the microcomputer , and HI activates the microcomputer.
Fig. 6-7 shows the reset circuit and Fig. 6-8 shows waveform at each point when power is turned on and
off.
When power is turned on, 12V line and 5V line voltages rise and 12V line voltage reaches 10.9V an
reset voltage input to pin 48 of microcomputer is set to Hi .
Reset voltage will be hold “Hi” until the 12V line voltage drops to 9.90V even though the power shuts
down.
Fig. 6-7
Fig. 6-8
−
MAIN P.W.B.
Microcomputer
RESET OUT.
RESET
56
48
C204
0V
R252
1
0V
8
2
3
IC5(1/2)
+
5V
D208
R287
C215
R284
R286
C225
R285
C226
R292
R289
R288
0V
0V
0V
0V
12V
12V line
12V line
5V line
5V line
Reset volage
Reset volage
Time
Time
10.9V
9.9V
12
6
0
12
6
0
Power is ON
Voltage (V)
Power is OFF
Voltage (V)
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Содержание RAC-35NX2
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Страница 45: ... 44 AX 8T11 SELF CHECK SELF MODE SERVICE SW PQ1 PQ2 PQ401 PQ402 PQ403 PQ404 PQ701 RED RED RED RAC 35NX2 ...
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Страница 62: ...SUCTION TANK SUCTION TANK 61 ...
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Страница 66: ... 8 0 5 5 5 7 78 65 ...
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Страница 68: ... E G E G E G 8 5 5 8 5 5 7 67 ...
Страница 69: ... JE DK JE DK JE DK 5 5 L 8 5 5 7 68 ...
Страница 70: ... 5 5 7 D 69 ...
Страница 71: ... 5 5 7 Q B Q B 70 ...
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Страница 73: ... 5 T X 5 X Y X 7 X W 5 T Z X 0 Z 9 8 72 ...
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Страница 131: ... Z _Z Z _Z RA RAC F 35NX2 35NX2 130 ...
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Страница 144: ... 1 RAF 35NX2 143 ...
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Страница 154: ... 0 45 6 65 0 1 45 5 450 1 0 69 0 153 ...
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Страница 156: ... 0 9 0 1 0 0 45 65 5 4 6 4 6 0 6 澎 潦 2 3 4 155 ...
Страница 157: ... 0 9 0 5 5 0 0 4 5 6 5 5 5 7 7 7 4 6 4 6 0 7 6 7 7 7 8 8 澎 潦 2 3 4 156 ...
Страница 159: ... 0 5 5 8 7 9 0 5 30 6 5 0 5 8 0 4 5 5 4 5 4 5 6 5 7 7 7 7 7 158 ...
Страница 160: ... 4 7 7 0 7 77 0 7 7 0 4 8 0 7 7 4 0 7 7 7 0 7 7 0 7 9 7 0 159 ...
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