SH888, S868, Standare Electrical Repair
4/00021-2/FEA 209 544/3.D
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5 Display
5.1 Type of fault.
Insert a fully charged battery into the phone and start it up using the On/Off-button.
•
If it doesn’t start, proceed to chapter 3 (“Doesn´t start”-fault).
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If the display is missing one or more of the segments, proceed to section 5.2.
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If the display is empty, proceed to section 5.3.
5.2 Segments are missing.
Open the phone and check for liquid damages. If it isn’t liquid damaged, replace the
display.
5.3 The display is empty.
Insert a dummy battery into the phone, start it up and check the current consumption
(should be less than 200mA). Open the phone and check for liquid damages and
make sure the display isn’t damaged.
•
If the display isn’t damaged, replace the elastomer and try again.
•
If that doesn’t help, replace the display and try again.
If the phone consumes more than 200mA, proceed to chapter 3 (“Doesn´t start”-
fault).
Give the board power and start it up without a display mounted. Measure the volt-
ages at the display pads (H623, fig. 5.1). Component placement is shown in fig. 5.2.
Fig. 5.1