Glory X10 Can't charge

Glory X10 Can’t charge

Machine model: Honor x10
Fault phenomenon:Honor X10 can be charged when it is turned off, but it can not be charged after it is pulled out and plugged in again.
Fault analysis: this kind of fault is mostly caused by the damage of DPDM data circuit, CC1, CC2 accessory identification circuit and accessory identification chip.
Maintenance process:

Glory X10 Can’t charge Figure 1.

Glory X10 Can’t charge Figure 2.

DP, DM, CC1 and CC2 diode value were all normal.

Glory X10 Can’t charge Figure 3.

When the charger is turned off and plugged in, it is measured that both CC1 and CC2 are 1V or so. After the charger is plugged into the system, both CC1 and CC2 are 1V or so. When the charger is pulled out and connected to the charger, there is no charging sign. At this time, there is 5V VCC on CC1.

Glory X10 Can’t charge Figure 4.

However, CC1 Related circuit has only one current limiting resistor r2609 and charging IC u2601.

Glory X10 Can’t charge Figure 5.

At this time, do not rush to change the resistor and chip, because only when the charging line is plugged and plugged will the outgoing line be abnormal VCC, and no Current protection is found in CC1 Related circuitdiodeSo turn your eyes to the small board.

Glory X10 Can’t charge Figure 6.

Glory X10 Can’t charge Figure 7.

Follow CC1 pin to measure the pin corresponding to the small board BTB connector, and then find out if there is any diode connected to the ground on the small board. After finding it, due to the confusion of blind measurement, the two CC Related circuit diodes were simply removed.