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iPhone camera circuit repairing

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This video mainly explains how to find iPhone 11Pro, ProMax telephoto camera signal and measurement points

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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 11Pro, ProMax component map, circuit diagram, 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 sent by the main power supply to the telephoto camera

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Pin 18 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 inductor FL7395,

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and then connected to the main power supply after passing through the inductor

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

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Next, find the I2C detection bus from the camera power supply to the telephoto camera

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Pins 23 and 25 of the connector are the I2C detection buses

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Pin 23, jump to the bitmap according to the name, the pin is connected to the camera power supply

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Pin 25, jump to the bitmap, the bus is also connected to the camera power supply

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

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Pin 21 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 is connected to the fuse resistor R7305,

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and after passing through the resistor, it is connected to the camera power supply U3700

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Next, let鈥檚 look for the 1.15V, 3.3V, AVDD2, 2.925V, and PVDD power supplies

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sent to the telephoto camera by the camera power supply and the conversion tube

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Pins 31, 27, 28 and 1 of the connector is the 1.15V power supply

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Jump to the bitmap according to the name,

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the 1.15V power supply is directly connected to the camera power supply

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Pin 15 of the connector is the PVDD supply power

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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 FL7301,

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and after passing through the fuse inductor, it is connected to the camera power conversion tube U3940

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The power supply will also be sent to the main power supply,

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so that the main power supply can monitor whether the power supply is normal

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Pin 17 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 directly connected to the camera power supply,

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and the power supply will also be supplied to other power supply conversion chips

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Pin 24 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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this power supply is directly connected to the camera power supply conversion tube U4120

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Pin 26 of the connector is the the ACDD2 power supply

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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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Let's look for the open signal sent by the CPU to the telephoto camera

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Pin 19 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 CPU, without fuse in the middle

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

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

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Generally, two lines form a group

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Pins 4, 6, 5, 7, 10, and 12 of the connector are the LPDP data buses

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

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the pin is connected to the coupling capacitor C7340

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And connected to the CPU after passing through the capacitor

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Pin 6, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C7341,

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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 C7350,

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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 C7351,

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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 C7330,

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and then connected to the CPU after passing through the capacitor

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Pin 12, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C7331,

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and then connected to the CPU after passing through the capacitor

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Next, look for the LPDP data monitoring bus from the CPU to the telephoto camera

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Pin 11 of the connector is the LPDP bus monitoring signal

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Jump to the bitmap according to the name,

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the monitoring signal is connected to the coupling capacitor C7360,

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and it is connected to the CPU after passing through the coupling 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