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iPhone camera circuit repairing

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This video mainly explains how to find the signals and measurement points

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of the iPhone 12 ProMax telephoto camera

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Search method step 1, find the telephoto 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,

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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 iPhone 12 ProMax component map, circuit diagram, and bitmap

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In the iPhone12ProMax component map,

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the telephoto camera is on the second longest connector on the right side of the mainboard

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This connector will connect two cameras, a telephoto camera and a telephoto camera

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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 2 to the telephoto camera

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Pin 6 of the connector is the 1.8V power supply shared by the telephoto camera and the super-wide-angle camera

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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 inductor FL10501,

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and connected to the camera power supply 2, U5600

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Let's find the I2C detection bus from the camera power supply 2 to the telephoto camera

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Pins 5 and 7 of the connector are the I2C detection buses

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

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it is directly connected to the camera power supply 2 U5600

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

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the signal is also connected to the camera power supply 2

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Let's find the 24M clock signal from the camera power supply 2 to the telephoto camera

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Pin 9 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 signal is connected to the camera power supply U5600 through the fuse resistor R10540

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Let's find the 1.35V, 0.975V,0.8V, 2.85V, and PVDD power supplies

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sent by the camera power supply 2 and the camera power conversion tube

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Pin 1 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 supply conversion tube U5950

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Pins 11 and 13 of the connector are the PVDD power supply

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Jump to the bitmap according to the name,

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the PVDD power supply is connected to the fuse inductor FL10500,

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and after passing through the inductor,

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it is connected to the camera power conversion tube U6250

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Pin 37 of the connector is the 0.975V 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 camera power supply 2 U5600

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Pins 39 and 41 of the connector are the 0.8V power supply

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Jump to the bitmap according to the name,

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the 0.8V power supply is directly connected to the camera power supply conversion tube U5920

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Pin 2 of the connector is the 1.35V power supply

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Jump to the bitmap according to the name,

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the 1.35V power supply is directly connected to the camera power supply 2 U5600

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Next, let's look for the open signal sent by the camera power supply 2 to the telephoto camera

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Pin 3 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 connected to the camera power supply U5600

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Let's find the LPDP data bus sent to the CPU by the telephoto camera

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Pins 19, 21, 25, 27, 31, 33 of the connector are the LPDP data buses

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When the LPDP data bus transmits data,

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it will pass through the coupling capacitors, and then to the CPU

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

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the pin is connected to the coupling capacitor C10521

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And 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 C10520,

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and then connected to the CPU after passing through the capacitor

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Pin 25, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C10523,

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and then connected to the CPU after passing through the capacitor

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Pin 27, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C10522,

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and then connected to the CPU after passing through the capacitor

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Pin 31, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C10525,

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and then connected to the CPU after passing through the capacitor

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Pin 33, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C10524,

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and then connected to the CPU after passing through the capacitor

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

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That's all for this video