MAXON SM-2000 MOBILE
VOLTAGE CHARTS
IC109
PIN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
BUSY | 7 | OSC | 6 | 7.2 | 6 | 6 | 6 | 7.2 |
RX (MUTE) | 7 | OSC | 6 | 7.2 | 6 | 6 | 6 | 7.2 |
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PIN | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
BUSY | AUDIO | 0.8 | NOISE | 2.5 | 7 | 4.5 | GND | 2 |
RX (MUTE) | AUDIO | 0.8 | NOISE | 0 | 7 | 0 | GND | 2 |
IC101
PIN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
RX VOLTAGE | 0 | 5 | 5 | 5 | 5 | PD | GND | 0 |
TX VOLTAGE |
| 2.5 | 5 | 5 | 5 | 0 | 0 | 2 |
PIN | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
RX VOLTAGE | 5 | 2 | 2.7 | 5 | 3.5 | 5 | 0 | 0 |
TX VOLTAGE | 2.7 | 3 | 2.7 | 5 | 3.5 | 5 | 0 | 0 |
PIN | 17 | 18 | 19 | 20 |
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RX VOLTAGE | 5 | 0 | 0 | OSC |
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TX VOLTAGE | 5 | 0 | 0 | 2.3 |
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TRANSISTOR VOLTAGE CHART
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REF.NO | B | C | E | B | C | E |
Q108 | 7.5 | 3.5 | GND | 0 | 3.5 | GND |
Q113 | 0.7 | 2.5 | 1.5 | 0.7 | 2.5 | 1.3 |
Q114 | 3.1 | 5 | 2.3 | 3.1 | 5 | 2.3 |
Q116 | 0 | 0 | 0 | 2 | 7 | 1.2 |
Q117 | 0 | 0 | 0 | 0.7 | 7.2 | GND |
Q125 | 12 | 13.72 | 13.7 | 12 | 12.5 | 13.2 |
Q106 | 7 | 2.5 | GND | 1 | 1.5 | GND |
Q140 | 0 | 7.5 | GND | 5 | 0 | GND |
Q130 | 0.7 | 5 | 0 | 0 | 2.5 | 0 |
Q122 | 8 | 0 | 8 | 7.3 | 8 | 8 |
Q121 | 0 | 8.1 | 0 | 5 | 0 | GND |
Q127 | 5 | 0 | GND |
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Q128 | 0 | 8 | 8 |
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Q120 | 0 | 13.8 | GND | 0 | 13.8 | GND |
Q118 | 0 | 9.5 | GND | 0 | 6 | GND |
Q139 | 7.5 | 0 | 8 | 0 | 8 | 8 |
December 98