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Acer Aspire 5252 Service Guide - Page 89

CAUTION, Discrete, Quantity, Screw Type, M2.5*5 red callouts

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5. UMA: Remove the four (4) securing screws from the mainboard. Discrete: Remove the one (1) securing screw from the mainboard. Discrete UMA Step Mainboard Size M2.5*5 (red callouts) 1 Quantity Screw Type (UMA Only) M2.5*5 (green 3 callouts) CAUTION: Do not remove the mainboard completely. The mainboard is still connected to the chassis. 6. To prevent damage, lay the LCD panel flat and cover the panel as shown. Chapter 3 79

Section	Page
System Specifications	11
Features	11
System Block Diagram	16
Discrete Model	16
UMA Model	17
Your Acer Notebook tour	18
Front View	18
Rear View	19
Left View	19
Right View	20
Base View	21
Indicators	21
Touchpad Basics	22
Using the Keyboard	23
Lock Keys and embedded numeric keypad	23
Windows Keys	24
Hot Keys	25
Hardware Specifications and Configurations	26
System Utilities	39
BIOS Setup Utility	39
Navigating the BIOS Utility	39
Aspire AS5552/AS5552G BIOS	40
Information	40
Main	41
Security	42
Boot	45
Exit	46
BIOS Flash Utilities	47
DOS Flash Utility	48
WinFlash Utility	50
Remove HDD/BIOS Password Utilities	51
Machine Disassembly and Replacement	55
Disassembly Requirements	55
Pre-disassembly Instructions	56
Disassembly Process	57
External Module Disassembly Process	58
External Modules Disassembly Flowchart	58
Removing the Battery Pack	59
Removing the SD Dummy Card	60
Removing the Keyboard	61
Removing the ODD Module	63
Removing the Logic Lower Door	65
Removing the 3G Cover (Discrete Only)	66
Removing the DIMM Module	67
Removing the WLAN Module	68
Removing the HDD Module	70
Removing the RTC Battery (UMA Only)	72
Main Unit Disassembly Process	73
Main Unit Disassembly Flowchart	73
Removing the Upper Cover	74
Removing the Speaker Module	78
Removing the Power Board	79
Removing the Touchpad FFC	80
Removing the Card Reader Board (Discrete Only)	81
Removing the USB Board	83
Removing the Bluetooth Module	85
Removing the ODD Connector Board (UMA Only)	87
Removing the Mainboard	88
Removing the Thermal Module	92
Removing the CPU	94
Removing the LCD Assembly	95
Removing the DC-IN Assembly	98
LCD Module Disassembly Process	99
LCD Module Disassembly Flowchart	99
Removing the LCD Bezel	100
Removing the Camera Module	101
Removing the Inverter Board (LCD Only)	102
Removing the LCD/LED Panel	104
Removing the LCD Brackets	105
Removing the LVDS cable	106
Removing the Microphone Cable	107
Removing the Antennas	109
LCD Module Reassembly Procedure	111
Replacing the Antennas	111
Replacing the Microphone Cable	113
Replacing the LVDS Cable	115
Replacing the LCD Brackets	116
Replacing the LCD/LED Panel	117
Replacing the Inverter Board (LCD Only)	118
Replacing the Camera Module	120
Replacing the LCD Bezel	121
Main Module Reassembly Procedure	122
Replacing the DC-IN Assembly	122
Replacing the LCD Assembly	123
Replacing the CPU	126
Replacing the Thermal Module	127
Replacing the Mainboard	130
Replacing the ODD Connector Board (UMA Only)	133
Replacing the Bluetooth Board	134
Replacing the USB Board	135
Replacing the Card Reader Board (Discrete Only)	137
Replacing the Touchpad FFC	139
Replacing the Power Board	140
Replacing the Speaker Module	141
Replacing the Upper Cover	142
Replacing the RTC Battery (UMA Only)	146
Replacing the HDD Module	147
Replacing the WLAN Module	149
Replacing the DIMM Modules	150
Replacing the 3G Cover (Discrete Only)	151
Replacing the Lower Logic Door	152
Replacing the ODD Module	153
Replacing the Keyboard	155
Replacing the SD Dummy Card	156
Replacing the Battery	157
Troubleshooting	159
Common Problems	159
Power On Issue	160
No Display Issue	161
Random Loss of BIOS Settings	162
LCD Failure	163
Built-In Keyboard Failure	163
Touchpad Failure	164
Internal Speaker Failure	164
HDD Not Operating Correctly	166
ODD Failure	167
Wireless Function Failure	170
Thermal Unit Failure	170
External Mouse Failure	171
Other Failures	171
Intermittent Problems	172
Undetermined Problems	172
Post Codes	173
Jumper and Connector Locations	177
Top View (Discrete)	177
Bottom View (Discrete)	178
Top View (UMA)	179
Bottom View (UMA)	180
Power Board(Discrete)	181
Power Board(UMA)	182
USB Board	183
Card Reader Board (Discrete only)	183
Clearing Password Check and BIOS Recovery	184
Clearing Password Check	184
Clear CMOS Jumper	184
BIOS Recovery by Crisis Disk	185
FRU (Field Replaceable Unit) List	187
Aspire AS5552/AS5552G Exploded Diagrams	188
Main Assembly	188
Upper Assembly	189
LCD Assembly	190
LED Assembly	191
Aspire AS5552/AS5552G FRU List	192
Screw List	209
Model Definition and Configuration	210
Test Compatible Components	249
Microsoft® Windows® 7 Environment Test	250
Online Support Information	255

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