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iPhone camera circuit repairing

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This video mainly explains how to find the iPhone 11 super-wide-angle camera signals and measurement points

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Search methods step 1, find the super-wide-angle camera connector in the iPhone 11 component map

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Step 2, determine the position number in the bitmap

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Step 3, search for the position number in the circuit diagram,

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and find the corresponding signals

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Step 4, according to the signals, jump to the bitmap to view the connected components

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The voltage and diode value can be measured at the position of the yellow point in the bitmap

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When checking the maps, first open the iPhone11 component map, circuit diagram, and bitmap

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Find the camera connector in the component map

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And determine the position number of the connector in the bitmap

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Then search for the position number in the circuit diagram

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After finding the camera connector, find the corresponding signals

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Let's first find the 1.8V power supply from the camera power supply to the super-wide-angle camera

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The 22nd pin of the connector is the 1.8V power supply

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Jump to the bitmap according to the name,

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the 1.8V power supply is directly connected to the camera power supply U3700

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after passing through the fuse resistor R7496

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Let's find the I2C detection bus from the camera power supply to the super-wide-angle camera

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Pins 17 and 19 of the connector are the I2C buses

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Pin 17, jump to the bitmap according to the name,

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pin 17 is directly connected to the camera power supply U3700

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Pin 19, jump to the bitmap according to the name,

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the signal is also directly connected to the camera power supply

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Next, find the 24M clock signal from the camera power supply to the super-wide-angle camera

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Pin 24 of the connector is the 24M clock signal

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Jump to the bitmap according to the name,

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the clock signal will be connected to the camera power supply

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after passing through the fuse resistor R7405

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Next, let's look for the AVDD2 power supply sent by the camera power supply,

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the 1.1V and 2.925V power supplies sent by the conversion tube when the camera circuit is started

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Pins 25, 26, and 28 of the connector are the 1.1V power supply

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Jump to the bitmap according to the name,

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the 1.1V power supply is directly connected to the camera power supply conversion tube U3930

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Pin 18 of the connector is the AVDD2 power supply

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Jump to the bitmap according to the name,

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AVDD2 power supply is connected to the camera power supply after connecting the fuse resistor R7492

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Pin 19 of the connector is the 2.925V power supply

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Jump to the bitmap according to the name,

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the power supply is connected to the fuse resistor R7491,

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and after passing through the resistor,

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it is connected to the camera power conversion tube U3960

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Next, let's look for the open signal from the camera power supply to the super-wide-angle camera

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Pin 13 of the connector is the open signal

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Jump to the bitmap according to the name,

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the open signal is directly connected to the camera power supply without fuse in the middle

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Let's find the LPDP data bus from the super-wide-angle camera to the CPU

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Pins 2, 4, 5, 7, 8, and 10 are the LPDP data buses

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Pin 2, LPDP bus, jump to the bitmap according to the name,

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the pin is connected to the coupling capacitor C7440

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And connected to the CPU after passing through the capacitor

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Pin 4, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C7441,

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and then connected to the CPU after passing through the capacitor

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Pin 5, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C7450,

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and then connected to the CPU after passing through the capacitor

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Pin 7, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C7451,

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and then connected to the CPU after passing through the capacitor

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Pin 8, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C7430,

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and then connected to the CPU after passing through the capacitor

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Pin 10, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C7431,

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and then connected to the CPU after passing through the capacitor

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Let's find the LPDP bus detection signal from the CPU to the super-wide-angle camera

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Pin 1 of the connector is the LPDP bus detection signal

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Jump to the bitmap according to the name,

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the detection signal is connected to the coupling capacitor C7460,

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and it is also connected to the CPU after passing through the capacitor

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The LPDP bus will be connected to the CPU through a coupling capacitor

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A damaged or missing coupling capacitor will cause the camera to fail to open

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That's all for this video