COMPONENTS DESCRIPTION
Ref. No. | Use/Function | Operation/Condition/Compatibility | |
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Q34 | Q33 operation | On when charging | |
| switch |
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Q35 | DC IN detection | H: DC IN detection | |
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Q36 | On when temperature detection is | ||
detection | activated | ||
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Q37 | AF amplifier/ |
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Lamp AVR |
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Q38 | Q37 operation | On when the speaker outputs audio or | |
switch | lamp lights | ||
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Q41 | 5MS switch | On when 5MS is applied | |
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Q47 | TX/BUSY LED |
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switch |
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Q50 | Key LED switch | On when the key LED lights | |
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Q51 | LCD LED switch | On when the LCD LED lights | |
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Q52 | Beat shift switch |
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Q53 | 5R/5MV switch | On when 5R or 5MV is applied | |
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Q55 | 5T switch | On when 5T is applied | |
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Q56 | Speaker mute |
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switch |
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Q57 | 5C switch | On when 5C is applied | |
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Q58 | Q12 gate | Off when High power is selected | |
voltage switch | |||
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Q59 | WX detection |
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amplifier |
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D1,2 | VCO frequency |
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control |
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D5 | Frequency shift |
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D6 | VCO modulation |
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D7 | Speed up | Ripple filter | |
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D8 | RF switch | On TX | |
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D9 | RF switch | On RX | |
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Antenna switch | On TX | ||
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D14 | Reverse current | APC reference voltage | |
| prevention |
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D15 | APC output |
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voltage limiter |
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D16 | PLL lock detection |
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D17 | Over input |
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protection |
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RX BPF tuning |
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D22 | MIC mute control |
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D24 | VOX detection |
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rectification |
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D25 | Speaker mute |
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speed up |
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D26 | C246 discharge |
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D27 | MIC ALC |
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rectification |
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D30 | Reverse current | Charge current | |
| prevention |
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D31 | |||
| circuit |
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D32 | Reverse current | DC IN | |
| prevention |
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Ref. No. | Use/Function | Operation/Condition/Compatibility |
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D33 | Reverse current | Battery |
| prevention |
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D34 | AVR |
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D35 | Reverse current | Battery |
| prevention |
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D36 | Reverse current | DC IN |
| prevention |
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D40 | TX LED | Lights on TX |
D41 | BUSY LED | Lights on RX |
Key illumination | Key backlight illumination | |
D46,47 | LED |
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D48,49 | LCD illumination | LCD backlight illumination |
| LED |
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D60 | Key type |
|
detection |
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market code |
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detection |
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Reverse current | Key matrix | |
| prevention |
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D73 | Voltage drop |
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D74,79 | Limiter |
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D80 | Reverse current |
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prevention |
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