HP Pro All-in-One 3520 Specifications download pdf (Page 56)

RTC Battery

The RTC battery is located under the memory cover.

To remove the RTC battery:

1. Prepare the computer for disassembly (see

Preparing to Disassemble the Computer

on page 40).

2. Remove the rear cover (see

Rear Cover on page 41).

3. Remove the memory cover (see

Memory Cover on page 44).

4. To release the battery from its holder, squeeze the metal clamp that extends above one edge of

the battery. When the battery pops up, lift it out (1).

48 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 151 152

About This Book 3
Table of contents 5
1 Product Features 9
Front Components 10
Side Components 11
Rear Components 12
Software 13
Downloading Windows 8 updates 14
SATA Hard Drives 15
SATA Hard Drive Cables 15
SMART ATA Drives 16
Hard Drive Capacities 16
Preparation 17
Grounding the Work Area 19
Operating Guidelines 20
Routine Care 20
Cleaning the Keyboard 21
Cleaning the Monitor 21
Service Considerations 22
Hard Drives 23
Lithium Coin Cell Battery 23
Computer Setup—File 26
Computer Setup—Storage 27
Computer Setup—Security 30
Computer Setup—Power 34
Computer Setup—Advanced 35
6 Illustrated parts catalog 38
Cables 31 39
Boards 33 41
Misc Parts 42
Thermal pads 43
All-in One (AIO) Chassis 48
Rear Cover 49
Description Spare part number 50
Stand 709838-001 50
Stand 43 51
Memory Cover 52
Memory Cover 45 53
4 GB (PC3-12800) 689373-001 54
2 GB (PC3-12800) 689372-001 54
RTC Battery 56
RTC Battery 49 57
Optical Drive 58
Optical Drive 51 59
Hard Drive 60
Converter Board 62
Speakers 64
Speakers 57 65
Webcam Module 66
Webcam Module 59 67
System Board Cover 69
Fan 671582-001 71
Heat sink/thermal module 73
Processor 75
Drive Cables and Connector 77
WLAN Module 79
System Board 82
System Board 75 83
Front Bezel 85
Display Panel 87
Safety and Comfort 90
Helpful Hints 91
Solving General Problems 93
Solving General Problems 87 95
Solving Power Problems 97
Solving Hard Drive Problems 99
Solving Display Problems 104
Solving Display Problems 97 105
Solving Display Problems 99 107
Solving Audio Problems 109
Solving Printer Problems 111
Solving Network Problems 117
Solving Network Problems 111 119
Solving Memory Problems 120
Solving Memory Problems 113 121
Solving Processor Problems 122
Solving Software Problems 128
Solving Software Problems 121 129
Contacting Customer Support 130
B HP PC Hardware Diagnostics 131
Backing up your information 133
Performing a system recovery 134
Using f11 recovery tools 135
D POST Error Messages 137
Audible Codes 143
E Power Cord Set Requirements 147
Country-Specific Requirements 148
F Specifications 149

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HP Pro All-in-One 3520 Specifications Page 56

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