Dell OptiPlex 7070 Tower Service Manual - Page 3

Chapter 1: Working on your computer

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6

Safety instructions

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6

Before working inside your computer

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6

Safety precautions

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7

Electrostatic discharge—ESD protection

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7

ESD field service kit

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8

Transporting sensitive components

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9

After working inside your computer

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9

Chapter 2: Technology and components

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10

DDR4

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10

USB features

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11

USB Type-C

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13

Advantages of DisplayPort over USB Type-C

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13

HDMI 2.0

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14

Intel Optane memory

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14

Enabling Intel Optane memory

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15

Disabling Intel Optane memory

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15

Chapter 3: Major components of your system

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16

Chapter 4: Removing and installing components

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18

Side cover

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18

Removing side cover

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18

Installing side cover

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19

Bezel

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20

Removing front bezel

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20

Installing front bezel

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21

Front panel door

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22

Opening front panel door

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22

Closing front panel door

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22

3.5-inch hard drive assembly

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23

Removing 3.5–inch hard drive assembly

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23

Installing 3.5–inch hard drive assembly

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24

3.5-inch hard drive

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26

2.5-inch hard drive assembly

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27

Removing the 2.5–inch hard drive assembly

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27

Installing the 2.5-inch drive assembly

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27

2.5-inch hard drive

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28

Optical drive

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29

Removing optical drive

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29

Installing optical drive

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31

M.2 SSD

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33

Removing M.2 SSD

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33

Contents

Contents

3

Section	Page
OptiPlex 7070 Tower Service Manual	1
Contents	3
Working on your computer	6
Safety instructions	6
Before working inside your computer	6
Safety precautions	7
Electrostatic discharge—ESD protection	7
ESD field service kit	8
Transporting sensitive components	9
After working inside your computer	9
Technology and components	10
DDR4	10
USB features	11
USB Type-C	13
Advantages of DisplayPort over USB Type-C	13
HDMI 2.0	14
Intel Optane memory	14
Enabling Intel Optane memory	15
Disabling Intel Optane memory	15
Major components of your system	16
Removing and installing components	18
Side cover	18
Removing side cover	18
Installing side cover	19
Bezel	20
Removing front bezel	20
Installing front bezel	21
Front panel door	22
Opening front panel door	22
Closing front panel door	22
3.5-inch hard drive assembly	23
Removing 3.5–inch hard drive assembly	23
Installing 3.5–inch hard drive assembly	24
3.5-inch hard drive	26
Removing 3.5–inch hard drive from the hard drive bracket	26
Installing the 3.5–inch hard drive into the hard drive bracket	26
2.5-inch hard drive assembly	27
Removing the 2.5–inch hard drive assembly	27
Installing the 2.5-inch drive assembly	27
2.5-inch hard drive	28
Removing the 2.5–inch drive from the drive bracket	28
Installing the 2.5–inch hard drive into the hard drive bracket	29
Optical drive	29
Removing optical drive	29
Installing optical drive	31
M.2 SSD	33
Removing M.2 SSD	33
Installing M.2 SSD	34
SD card reader	35
Removing SD card reader	35
Installing SD card reader	36
Memory module	37
Removing memory module	37
Installing memory module	38
Expansion card	39
Removing PCIe expansion card	39
Installing PCIe expansion card	40
Power supply unit	41
Removing power supply unit or PSU	41
Installing power supply unit or PSU	43
Intrusion switch	45
Removing intrusion switch	45
Installing intrusion switch	46
Power button	47
Removing power button	47
Installing power button	48
Speaker	50
Removing speaker	50
Installing speaker	51
Coin cell battery	52
Removing coin cell battery	52
Installing the coin cell battery	53
Heat sink fan	54
Removing heat sink fan	54
Installing heatsink fan	55
Heatsink assembly	56
Removing heatsink assembly	56
Installing heatsink assembly	57
Processor	58
Removing processor	58
Installing processor	59
System fan	60
Removing system fan	60
Installing system fan	61
Optional VGA module	62
Removing optional VGA module	62
Installing optional VGA module	63
System board	64
Removing system board	64
Installing the system board	67
BIOS setup	70
BIOS overview	70
Entering BIOS setup program	70
Navigation keys	70
Boot menu	71
System setup options	71
General options	71
System information	72
Video screen options	73
Security	74
Secure boot options	75
Intel Software Guard Extensions options	75
Performance	76
Power management	76
Post behavior	77
Manageability	78
Virtualization support	78
Wireless options	78
Maintenance	78
System logs	79
Advanced configuration	79
Updating the BIOS	79
Updating the BIOS in Windows	79
Updating the BIOS in Linux and Ubuntu	80
Updating the BIOS using the USB drive in Windows	80
Updating the BIOS from the F12 One-Time boot menu	80
System and setup password	81
Assigning a system setup password	81
Deleting or changing an existing system setup password	82
Clearing CMOS settings	82
Clearing BIOS (System Setup) and System passwords	82
Troubleshooting	83
Enhanced Pre-Boot System Assessment — ePSA diagnostics	83
Running the ePSA Diagnostics	83
Power-Supply Unit Built-in Self-Test	84
Diagnostics	84
Diagnostic error messages	86
System error messages	88
Recovering the operating system	89
Real-Time Clock (RTC Reset)	89
Backup media and recovery options	89
WiFi power cycle	90
Getting help	91

Dell OptiPlex 7070 Tower Service Manual - Page 3

Contents, Working on your computer

Page 3 highlights