Samsung SM-A720F User manual

Confidential and proprietary-the contents in this service guide subject to change without prior notice

Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.

7. Level 2 Repair

7-1. Components on the Rear Case

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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.

7. Level 2 Repair

7-2. Pre-requisite

Tweezers / Disass'y Stick / Screw Driver Anti-static Gloves

Anti-static Mat

Hot Plate

A OCTA Disassembly Holder

OCTA Disassembly Upper

Ethyl Alcohol Cotton Swab

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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.

7. Level 2 Repair

7-3. Parts which must be changed after repair

BOM A code Image Remarks

A/S Back Glass Outside Tape

(Common)

[GH81-14368A]

Replace for

Back Glass repair

A/S Back Glass Inner Tape

[GH81-14367A]

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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.

7. Level 2 Repair

7-4. Disassembly

※C a u tio n

1) Be care of scratch ※C a u tio n

1) Be care of scratch

※C a u tio n

1) Be care of Rear damage ※C a u tio n

1) Be care of Rear and connector damage

1 2 Unscrew 15 Point and disassemble SIM Tray1,

2 from device.

3 Disassemble Upper/Middle Rear.(Use disassemble

hole left side of Rear to detach it) 4 Finally Disassemble Rear of bottom side.

(Use disassemble hole left side of Rear to detach it)

1) SOC 68%



: Put the device in the chamber

for 10~20 minutes under 70℃.

2) SOC 68% : Put the device in the chamber for

10~20 minutes under 60℃.

3) Detach the Back Glass.

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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.

7. Level 2 Repair

※C a u tio n

1) Be careful not to damage the PBA ※C a u tio n

1) Be care of connector/cable damage

※C a u tio n

1) Be care of PBA damage ※C a u ti o n

1) Be care of several kinds of damage

6 Detach Battery connect and the other

connectors. (7 Points, except for Front Camera

connector)

7 Detach main PBA from Front. 8 Detach other components.

Unscrew PBA 3 points.

MAIN Camera

SUB Camera

Battery

Motor

Ear Jack

Prox Sensor

Receiver

Detach PBA

Confidential and proprietary-the contents in this service guide subject to change without prior notice

Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.

7. Level 2 Repair

7-5. Assembly

※

Caution

1) Be care of FPCB damage and tilt

2) Be care of press power/time

※Caution

1) Be care of chip damage nearby screw point

※Caution

1) Be care of Battery damage.

※Caution

1) Be care not to damage the PBA.

Attach components on Front.

(RCV module, Sensor FPCB, Motor) and then

Press RCV.

2 Attach PBA assy In Front Assy.

(PBA+ Front)

3 Attach Battery connect and the other

connectors. (7 Points)

Attach Front Camera on PBA.

4 Screw PBA 3 points.

(Torque:1.2 Kgf·cm±7%)

MAIN

SUB

Motor

Ear

Prox

Receive

PCB 15°angle

Confidential and proprietary-the contents in this service guide subject to change without prior notice

Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.

7. Level 2 Repair

※Caution

1) Be care of scratch and REAR damage ※Caution

1) Be care of scratch and REAR damage

※Caution

1) Be care of scratch and REAR damage

※Caution

1) Be care of scratch and tilt.

5 6

7 Screw 15 Point andAssemble SIM Tray1, 2 on

device

(Torque:1.3 Kgf·cm±7%)

8 Attach Back Glass.

Assemble Rear of bottom side.

Assemble Upper/Middle Rear.

Confidential and proprietary-the contents in this service guide subject to change without prior notice

Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.

7. Level 2 Repair

※Caution

1) Be care of scratch. ※Caution

1) Be care of scratch.

※Caution

1) Be care of scratch.

※Caution

1) Be care of PBA damage

9 Press Back Glass.(1N for 1minute) 10 Do water resistance test(WRT)

11 If fail WRT doing debugging(sealing or etc) 12 If IF connector problem, disassemble

& remove gasket

Confidential and proprietary-the contents in this service guide subject to change without prior notice

Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.

7. Level 2 Repair

※Caution

1) Be care of scratch. ※Caution

1) Be careful not to damage the PBA

13 Use O-ring(GH81-14271A) on IF CON

Reassemble & Re WRT

※Remove USB Dispensing on PBA.

Insert O-Ring on PBA.

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