1

00:00:00,266 --> 00:00:02,166

iPhone camera circuit repairing

2

00:00:03,133 --> 00:00:09,100

This video mainly explains how to find the front camera signals and measurement points of the iPhone 11Pro and ProMax

3

00:00:12,700 --> 00:00:17,366

Search method step 1, open the component map of the iPhone 11Pro and ProMax ,

4

00:00:20,166 --> 00:00:24,166

Step 2, search for the position number in the schematic diagram

5

00:00:27,200 --> 00:00:30,300

Step 3, after finding the camera connector,

6

00:00:30,500 --> 00:00:33,833

find the corresponding signals according to the schematic diagram

7

00:00:39,000 --> 00:00:42,066

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

8

00:00:42,066 --> 00:00:44,066

and find the connected components

9

00:00:46,033 --> 00:00:49,700

We can measure the voltage and diode value at the yellow points in the bitmap

10

00:00:52,033 --> 00:00:56,333

When checking the maps, first open the component map, circuit diagram,

11

00:00:56,333 --> 00:00:58,966

and bitmap of the iPhone 11Pro and ProMax

12

00:01:00,333 --> 00:01:04,100

Find the position number of the front camera connector in the component map

13

00:01:07,700 --> 00:01:10,933

Then search for the position number in the schematic diagram

14

00:01:14,833 --> 00:01:19,800

After finding the connector, find the corresponding signals according to the block diagram

15

00:01:22,266 --> 00:01:26,666

First find the 1.8V power supply from the main power supply to the front camera

16

00:01:27,400 --> 00:01:31,433

Pin 16 of the connector is the 1.8V power supply of the front camera

17

00:01:31,733 --> 00:01:33,600

Jump to the bitmap according to the name,

18

00:01:34,300 --> 00:01:39,400

the 1.8V power supply passes through the fuse inductor FL7600,

19

00:01:39,566 --> 00:01:41,500

and then connects to the main power supply

20

00:01:42,066 --> 00:01:46,833

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

21

00:01:47,700 --> 00:01:50,733

Let's find the I2C bus from the CPU to the front camera

22

00:01:52,300 --> 00:01:55,500

Pins 10 and 17 of the connector are the I2C buses

23

00:01:57,233 --> 00:01:59,966

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

24

00:02:00,900 --> 00:02:05,200

the I2C bus is directly connected to the CPU, without fuse in the middle

25

00:02:06,366 --> 00:02:09,366

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

26

00:02:10,300 --> 00:02:13,633

the I2C bus is also directly connected to the CPU

27

00:02:14,166 --> 00:02:18,100

Let's look for the 12M clock signal from the CPU to the front camera

28

00:02:19,733 --> 00:02:23,600

Pin 6 of the connector is the 12M clock signal of the front camera

29

00:02:24,300 --> 00:02:25,966

Jump to the bitmap according to the name,

30

00:02:27,333 --> 00:02:34,766

the clock signal is connected to the fuse resistor R1241 after passing through the fuse resistor R7610,

31

00:02:35,466 --> 00:02:37,466

and then connected to CPU

32

00:02:39,766 --> 00:02:43,866

The clock signal is connected to the CPU through two fuse resistors

33

00:02:44,866 --> 00:02:49,266

Next, let鈥檚 look for the 2.925V power supply and 1.2V power supply

34

00:02:49,266 --> 00:02:53,400

sent to the front camera by the camera conversion tube when the camera circuit is started

35

00:02:55,766 --> 00:03:01,066

Pins 21, 22, 24 of the connector are the 2.925V power supplies

36

00:03:01,466 --> 00:03:03,300

Jump to the bitmap according to the name,

37

00:03:04,133 --> 00:03:08,000

the power supply is connected to the conversion tube U4100

38

00:03:09,366 --> 00:03:15,400

Pins 19, 20, and 23 of the connector provide power for the front camera with 1.2V

39

00:03:15,766 --> 00:03:17,566

Jump to the bitmap according to the name,

40

00:03:18,033 --> 00:03:23,133

the 1.2V power supply is directly connected to the conversion chip U3920

41

00:03:24,200 --> 00:03:29,533

If the 1.2V power supply is abnormal, we need to replace the U3920

42

00:03:30,533 --> 00:03:36,800

If the 2.925V power supply is abnormal, we need to replace the U4100

43

00:03:37,500 --> 00:03:41,400

Next, let's look for the open signal from the CPU to the front camera

44

00:03:42,700 --> 00:03:46,033

Pin 12 of the connector is the open signal for the front camera

45

00:03:46,500 --> 00:03:50,933

Jump to the bitmap according to the name, the signal is directly connected to the CPU

46

00:03:52,666 --> 00:03:56,366

Let's find the LPDP data bus from the CPU to the front camera

47

00:03:58,800 --> 00:04:04,200

Pins 5, 7, 11, and 13 of the connector are the LPDP data buses

48

00:04:05,666 --> 00:04:10,033

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

49

00:04:10,233 --> 00:04:13,866

it is connected to the coupling capacitor C7631

50

00:04:14,000 --> 00:04:17,466

And connected to the CPU after passing through the capacitor

51

00:04:18,566 --> 00:04:21,600

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

52

00:04:21,900 --> 00:04:25,933

it is connected to the coupling capacitor C7630,

53

00:04:26,200 --> 00:04:29,733

and then connected to the CPU after passing through the capacitor

54

00:04:30,766 --> 00:04:34,166

Pin 11, jump to the bitmap according to the name,

55

00:04:34,366 --> 00:04:38,000

it is connected to the coupling capacitor C7633,

56

00:04:38,200 --> 00:04:41,666

and then connected to the CPU after passing through the capacitor

57

00:04:42,500 --> 00:04:45,666

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

58

00:04:46,133 --> 00:04:50,133

the pin is connected to the coupling capacitor C7632,

59

00:04:50,566 --> 00:04:53,700

and then connected to the CPU after passing through the capacitor

60

00:04:55,166 --> 00:05:00,466

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

61

00:05:02,366 --> 00:05:06,466

Pin 1 of the connector is the front camera LPDP bus monitoring signal

62

00:05:07,366 --> 00:05:09,333

Jump to the bitmap according to the name,

63

00:05:10,200 --> 00:05:14,200

the pin is connected to the coupling capacitor C7634,

64

00:05:14,466 --> 00:05:17,866

and then connected to the CPU after passing through the capacitor

65

00:05:18,133 --> 00:05:22,533

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

66

00:05:23,333 --> 00:05:27,266

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

67

00:05:29,000 --> 00:05:30,766

That's all for this video