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Acer Aspire Z1650 Acer Aspire Z1650 Desktop Service Guide - Page 29

Removing a System Password, twice without entering anything in the password fields.

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Removing a System Password 1. Use the up/down arrow keys to select password parameter (Change Supervisor Password or Change User Password) menu then press Enter. 2. Enter the current password then press Enter. 3. Press Enter twice without entering anything in the password fields. Aspire Z1650 AIO Computer Service Guide 21

Section	Page
Aspire Z1650 All-In-One Computer Service Guide	1
Table of Contents	7
Features and Specifications	9
System Features	9
Physical Specifications	10
Environmental Requirements	10
System Tour	11
Front View	11
Right View	12
Left and Rear Views	13
Hardware Specifications	14
Processor	14
Chipsets	14
BIOS	14
Memory	14
Hard Disk Drive	15
Optical Disc Drive	15
Card Reader	15
Ethernet	15
Wireless LAN	16
Audio	16
Webcam	16
LCD Panel	16
AC Adapter	17
System Utilities	19
CMOS Setup Utility	19
Accessing the Setup Utility	20
Navigating through the Setup Utility	20
Setup Utility Menus	20
System Disassembly	33
Disassembly Tools	33
Pre-disassembly Procedure	33
Disassembly Procedures	34
Removing the Computer Stand	34
Removing the Side Bars	35
Removing the Front Bezel	36
Removing the Webcam Module	38
Removing the LCD Assembly	39
Removing the WLAN Module	41
Removing the LCD Cable	42
Removing the LCD Panel Brackets and Inverter Board	43
Removing the Optical Disc Drive	46
Removing the VGA-Out Port	49
Removing the Hard Disk Drive	50
Removing the System Fan	52
Removing the Heat Sink	53
Removing the Memory Modules	54
Removing the Webcam Cable	55
Removing the Power Button/LED Assembly	56
Removing the Speakers	57
Removing the Mainboard	58
Reassembly Procedures	60
Replacing the Mainboard	60
Replacing the Speakers	61
Replacing the Power Button/LED Assembly	62
Replacing the Webcam Cable	64
Replacing the Memory Modules	65
Replacing the Heat Sink	65
Replacing the System Fan	66
Replacing the Hard Disk Drive	68
Replacing the VGA-Out Port	70
Replacing the Optical Disc Drive	71
Replacing the LCD Panel Brackets and Inverter Board	73
Replacing the LCD Cable	76
Replacing the WLAN Module	77
Replacing the LCD Assembly	79
Replacing the Webcam Module	81
Replacing the Front Bezel	82
Replacing the Side Bars	83
Replacing the Computer Stand	84
Troubleshooting	87
Hardware Diagnostic Procedure	87
System Check Procedures	87
Checkpoints	88
POST Error Indicators	92
Index of Symptom-to-FRU Error Messages	97
BIOS Recovery	101
Clearing CMOS	102
System Architecture	103
Block Diagram	103
Mainboard Layout	104
Field Replaceable Unit (FRU) List	107
Exploded Diagram	108
FRU List	109
Model Definitions and Configurations	127
Approved Vendor List (AVL)	133

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