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Acer Aspire 5336 Service Guide - Page 50

Removing BIOS Passwords, point, clnpwd.exe

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Removing BIOS Passwords To clear the User or Supervisor passwords, open the DIMM door and use a metal instrument to short the JP9 point. Cleaning BIOS Passwords To clean the User or Supervisor passwords, perform the following steps: 1. From a DOS prompt, execute clnpwd.exe 2. Press 1 or 2 to clean the desired password shown on the screen. The onscreen message determines whether the function is successful or not. 40 Chapter 2

Section	Page
System Specifications	11
Features	11
System Block Diagram	15
Your Acer Notebook tour	16
Front View	16
Closed Front View	17
Closed Rear View	17
Left View	18
Right View	18
Base View	19
Indicators	19
Touchpad Basics	20
Using the Keyboard	21
Lock Keys and embedded numeric keypad	21
Windows Keys	22
Hot Keys	23
Hardware Specifications and Configurations	24
System Utilities	37
BIOS Setup Utility	37
Navigating the BIOS Utility	37
Aspire 5336 BIOS	38
Information	38
Main	39
Security	40
Boot	43
Exit	44
BIOS Flash Utilities	45
DOS Flash Utility	46
WinFlash Utility	48
Remove HDD/BIOS Password Utilities	49
Machine Disassembly and Replacement	53
Disassembly Requirements	53
Pre-disassembly Instructions	54
Disassembly Process	55
External Module Disassembly Process	56
External Modules Disassembly Flowchart	56
Removing the Battery Pack	57
Removing the SD Dummy Card	58
Removing the Keyboard	59
Removing the ODD Module	61
Removing the Logic Lower Door	63
Removing the DIMM Module	64
Removing the WLAN Module	65
Removing the HDD Module	67
Removing the RTC Battery	69
Main Unit Disassembly Process	70
Main Unit Disassembly Flowchart	70
Removing the Upper Cover	71
Removing the Speaker Module	75
Removing the Power Board	77
Removing the Touchpad FFC	79
Removing the USB Board	80
Removing the Bluetooth Module	82
Removing the ODD Connector Board	83
Removing the Mainboard	84
Removing the Thermal Module	88
Removing the CPU	89
Removing the LCD Assembly	90
Removing the DC-IN Assembly	93
LCD Module Disassembly Process	94
LCD Module Disassembly Flowchart	94
Removing the LCD Bezel	95
Removing the Camera Module	96
Removing the Inverter Board	97
Removing the LCD/LED Panel	99
Removing the LCD Brackets	100
Removing the LVDS cable	101
Removing the Microphone Cable	102
Removing the Antennas	104
LCD Module Reassembly Procedure	106
Replacing the Antennas	106
Replacing the Microphone Cable	108
Replacing the LVDS Cable	110
Replacing the LCD Brackets	111
Replacing the LCD/LED Panel	112
Removing the Inverter Board	113
Replacing the Camera Module	115
Replacing the LCD Bezel	116
Main Module Reassembly Procedure	117
Replacing the DC-IN Assembly	117
Replacing the LCD Assembly	118
Replacing the CPU	121
Replacing the Thermal Module	122
Replacing the Mainboard	124
Replacing the ODD Connector Board	127
Replacing the Bluetooth Board	128
Replacing the USB Board	129
Replacing the Touchpad FFC	131
Replacing the Power Board	132
Replacing the Speaker Module	133
Replacing the Upper Cover	134
Replacing the RTC Battery	138
Replacing the HDD Module	139
Replacing the WLAN Module	141
Replacing the DIMM Modules	142
Replacing the Lower Logic Door	143
Replacing the ODD Module	144
Replacing the Keyboard	146
Replacing the SD Dummy Card	147
Replacing the Battery	148
Troubleshooting	149
Common Problems	149
Power On Issue	150
No Display Issue	151
Random Loss of BIOS Settings	152
LCD Failure	153
Built-In Keyboard Failure	153
Touchpad Failure	154
Internal Speaker Failure	154
HDD Not Operating Correctly	156
ODD Failure	157
Wireless Function Failure	160
Thermal Unit Failure	160
External Mouse Failure	161
Other Failures	161
Intermittent Problems	162
Undetermined Problems	162
Post Codes	163
Jumper and Connector Locations	167
Top View	167
Bottom View	168
Power Board	169
USB/B Board	170
ODD Board	170
Clearing Password Check and BIOS Recovery	171
Clearing Password Check	171
Clear CMOS Jumper	171
BIOS Recovery by Crisis Disk	172
FRU (Field Replaceable Unit) List	173
Aspire 5336 Exploded Diagrams	174
Main Assembly	174
Upper Assembly	175
LCD Assembly	176
LED Assembly	177
Aspire 5336 FRU List	178
Screw List	197
Model Definition and Configuration	198
AS5336	198
Test Compatible Components	219
Microsoft® Windows® 7 Environment Test	220
Online Support Information	225

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