3.4 Level 2 Repair
Mainly on mobile phones whose screw dismantled, but the separating cover
not dismantled.
3.4.1 Replace the phone cover or components on the cover(you do not need to use
hot-iron or hot-wind gun):
Including keyboard pasting paper(Metal Done), LCD soft seal, LCD module front
panel, receiver, vibrating motor, silica gel key etc.
3.4.2 Simple manual testing order:
Use the simple manual testing order to check out whether the SW version, vibrator,
LCD module, MIC are in good condition.
3.4.3 Replace the inbuilt antenna:
The inbuilt antenna is hot-melted on rear houding, dismantle the rear houding and
replace the rear houding with the hot-melted antenna.
3.5 Check out after repair
3.5.1
After repair you need to pay attention on the following things:
(1) Wether there is any scratch on front and back cover or Len (phones need to be
confirmed with customers on the delivery, to see wether there is any scratch on
the phone’s appearance), Lens and LCD should have no finger print.
(2) Check wether the handset is well assembled with front and back cover, there
should not be any obvious chink or crack.
(3) Check up all the keys on the phone, to make sure there is no wrong feeling
phenomenon.
(4) Check by eye to see there is no deformity on battery bomb splinter.
(5) Start up to check wether the LCD is slanting while backlight is light on.
(6) Please tear off the lable on the original back cover( including IMEI Label), and
paste it to the new back cover. Avoid damaging the lable while tearing, you may
heat the lable by wind gun(Note: heating time should not be too long to damage
the back cover.
3.5.2
Make function test and checking after repairing on the PCB.
(1) Whole handset checking:
Observe the whole mobile phone, you can confirm the calling functions and voice quality
by dialing or receiving phonecall, and to observe the vibrating bell’s quality; also, you can
identify phone’s relevant functions to be normal or abnormal by manual testing function.
(2) SW Test
Make SW test on SW, particularly on the phones handled on FLASHROM, EEPROM, you
can test on phone’s storaging functions by dialing numbers; confirm that there is no fault
on function table by using function table, and to further testify wether the logic part
operating normally by charging phone, and you can also check the battery power function
to re-check wether logic part works normally.
