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iPhone trigger circuit

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In this lesson, we mainly explain how to find the switch pin,

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how to find the standby power supply

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The switch pin search method is the same across Apple's entire range of models

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For example, method 1

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Step 1, open the component map,

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circuit diagram and bitmap of the corresponding model

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Below, let's demonstrate how to find the signal of the switch pin

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We first open the mapping software of Xinzhizao,

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and open the bitmap, component map and circuit diagram

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Step 2, find the switch seat position number on the component map

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Step 3, search the switch seat position number in the drawing

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Step 4, observe the English label of the switch seat circuit in the drawing

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The identifier for iPhone 6- 6SP models is BUTTON_HOLD_KEY

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The identifier for the iPhone 7- X switch is BUTTON_POWER_KEY

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The switch on iPhone 11- 12 models is labeled BUTTON_SIDE

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Step 5, go to the bitmap to view the connection according to the identifier

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Below, let's demonstrate how to find the signal of the switch pin

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We first open the mapping software of Xinzhizao,

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and open the bitmap, component map and circuit diagram

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Step 2, locate the switch connection seat in the marked diagram

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According to the position number of the switch connection seat,

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we will search the switch position number in the drawing

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Step 3, after finding the switch position number,

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we determine which is the switch pin according to the English identifier of the switch seat pin

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The switch pin on the iPhone 7- xs Max is labeled BUTTON_POWER_KEY

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The second pin in the drawing is the switch pin

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We switch to the bitmap,

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and we know where the pin is in the mainboard

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Switch pin quick search method

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In the bitmap of Xinzhizao manufacturing point,

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there will be a model switch pin comparison table

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According to the table, we can find the switch pin quickly

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Switch pin quick search method

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After we select the corresponding model,

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open the bitmap directory

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The first directory is the switch pin short contact

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In the figure, it identifies the connection seat where the switch pin is located,

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and identifies the pin number

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Once the pin is found,

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we can look for the chip or component that the pin is connected to in the bitmap

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Standby power supply search method

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The standby power search method is the same across Apple's entire range of models

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We just need to select the Find button in the bitmap of the corresponding model

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Select the search signal and enter PP1V8_ALWAYS

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After searching, the yellow dot in the bitmap is standby power supply

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We can measure the resistance at the yellow point,

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and we can measure the voltage

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Ok, that's all for this lesson