Acer A1-830 Maintenance manual
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Ducati
A1-830
Maintenance manuals
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secret
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Mian
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Production
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File name A1 830 Maintenance manuals
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（
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AMENDMENT HISTORY
S/N Rev Description of Change Date Originator Check Approval DCR No.
1 V1.0
Formal Version
2013-12-20 ZhaoYan
2
3
4
5
6
7
8
9
10
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Content
Breakdown maintenance ............................................................................ 4
1.1 Can't boot or can' t kee p on .................................................... 4
1.2 Abnormal power ma nagement .............................................. 5
1.3 Program Download an omalies and USB not identify ........... 6
1.4 LCD display abnormal .......................................................... 7
1.5 The speaker sile nt .................................................................. 9
1.6 The microphone work abnormal ......................................... 10
1.7 There was no voice and headsets microphone failure ......... 10
1.8 Camera function abn ormal .................................................. 11
1.9 Touch screen is invalid ........................................................ 12
1.10 The sensor failure .............................................................. 13
1.11 EMMC failure .................................................................... 13
1.12 Dysfunction of the SD ....................................................... 14
1.13 GPS function abnormal ..................................................... 14
1.14 WIFI/BT function abnormal .............................................. 15
Appendix 1 test po int s
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1.1
Can't boot up
classification： High
Don't boot often manifests itself in the following situation：
a、 Low battery voltage：
The battery take off the battery voltage is measured with a multimeter, should be higher than 3.7 V, Ducati just
can normal boot.Replace the battery or the battery is full
b、
Battery IDpin, abnormal Bptherm_NTC resistance.Replace the battery can be
。
ID resistance at 100 k
c、 NTC resi s t a nce of 47 k
d、 The battery connector is not good：
Check whether the battery connector plug, confirm the connector has completely fasten。
e、 If the Power Key connection whether normal or damage：
Reconnect the or replace the Power Key。
f、 Check if the LCD and LCD_FPC assembly is normal, rebuilt or replaced。
g、 Out of a ~ e still cannot boot after failure, board level fault shall be checked。
Check each power supply is normal, or short circuit。
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1.2 Abnormal power ma nagement
Power management system maintenance is to first check for short circuit situation and check whether the power supply
situation is normal, U3001 - PMU - 2 chips and peripheral resistance, capacitance and inductance are even welding, welding
condition, whether X5001 vibration (32.768 Khz), if the above works, could be chip U9004 welding problems.Heavy
welding or replace the chips.Can also be carried out in accordance with the flowchart in detail
。
File name A1 830 Maintenance manuals
Production
HW Version No. Ver1.0 File type
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