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iPhone camera circuit repairing

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

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Search methods step 1, find the wide-angle camera connector in the 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, 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 of the wide-angle camera

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The 3rd 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 connected to the fuse resistor R7296,

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And connected to the main power supply after passing through the resistor

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This power supply will be the same as the 1.8V of the CPU and hard disk

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Next, find the I2C bus from the camera power supply to the wide-angle camera

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Pins 13 and 15 of the connector are the I2C buses

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Pin 13, jump to the bitmap according to the name,

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it is connected to the camera power supply U3700

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Pin 15, jump to the bitmap according to the name,

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the signal is also connected to U3700

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

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Pin 12 of the connector is the 24M clock signal of the wide-angle camera

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Jump to the bitmap according to the name,

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the clock signal is directly connected to the camera power supply U3700

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after passing through the fuse resistor R7205

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Let's find the 3.3V power supply sent by the main power supply to the wide-angle camera

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Pin 11 of the connector is the 3.3V power supply

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Jump to the bitmap according to the name,

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the 3.3V power supply is connected to the main power supply

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after passing through the fuse resistor R7294

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Next, let's look for the 1.2V, 2.85V, PVDD and AVDD2 power supplies

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sent by the conversion tube and camera power supply to the wide-angle camera

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Pins 25, 29, 30, and 32 of the connector are the 1.2V power supplies

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Jump to the bitmap according to the name,

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the 1.2V power supply is directly connected to the camera conversion tube U3910

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Pin 4 of the connector is the 2.85V power supply

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Jump to the bitmap according to the name,

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the 2.85V power supply is directly connected to the camera power conversion tube U3900

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Pin 6 of the connector is the AVDD2 power suppl of the wide-angle camera

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Jump to the bitmap according to the name,

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AVDD2 power supply is directly connected to the camera power supply

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after passing through the fuse resistor R7292

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Pin 8 of the connector is the PVDD power supply of the wide-angle camera

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Jump to the bitmap according to the name,

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the PVDD power supply is generated by the conversion tube U3940 and is monitored to see if it is normal

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Let's find the open signal from the camera power supply to the wide-angle camera

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Pin 1 of the connector is the open signal

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Jump to the bitmap according to the name,

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the signal is connected to the camera power supply

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

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Pins 16, 18, 19, 21, 22, and 24 of the connector are the LPDP data buses

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Pin 16, LPDP bus, jump to the bitmap according to the name,

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the pin is connected to the coupling capacitor C7250

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And connected to the CPU after passing through the capacitor

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Pin 18, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C7251,

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and then connected to the CPU after passing through the capacitor

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

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it is connected to the coupling capacitor C7230,

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and then connected to the CPU after passing through the capacitor

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Pin 21, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C7231,

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and then connected to the CPU after passing through the capacitor

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Pin 22, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C7240,

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and then connected to the CPU after passing through the capacitor

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Pin 24, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C7241,

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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 wide-angle camera

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Pin 23 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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it is connect the coupling capacitor C7260,

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and connect to the CPU after passing through the capacitor

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The LPDP bus will be connected to the CPU after passing through the coupling capacitors

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If one of the capacitors is damaged or missing, the camera cannot be used

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That's all for this video