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Lenovo NetVista A22 Hardware Maintenance Manual (HMM) for NetVista 2254, 2256, - Page 55

Push the metal tab and slide the power supply unit upward., Rotate the power supply outward as shown

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Page 55 highlights

2. Push the metal tab and slide the power supply unit upward. 3. Rotate the power supply outward as shown. Chapter 4. Installing Options 47

Section	Page
About this manual	5
Important Safety Information	5
Contents	7
Chapter 1. General Checkout	9
Chapter 2. General Information	11
Features	11
Specifications	13
Physical specification — small desktop model	13
Physical specification — desktop model	14
Physical specifications — microtower model	15
Chapter 3. Diagnostics	17
Setup Utility program	18
Product Recovery Program menu	19
Diagnostics	20
Diagnostics program download	20
Navigating through the diagnostics programs	20
Running diagnostics tests	20
Test selection	20
Module test menu/hardware configuration report	21
Memory Diagnostic tests	21
Alert-On LAN™ test	22
Asset ID™ test	22
Test results	22
Hard file Smart test	23
Quick and Full erase - hard drive	23
Iomega Zip drive test	24
Asset EEPROM backup	24
Viewing the test log	24
When to use the Low-Level Format program	25
Preparing the hard disk drive for use	25
Chapter 4. Installing Options	27
Locating the connectors on the front of your computer	27
Locating the connectors on the rear of your computer	30
Home PNA network adapter	33
Removing the cover - small desktop model	34
Locating components - small desktop model	35
Identifying parts on the system board - small desktop model	35
Installing memory - small desktop model	36
Installing DIMMs	36
Installing adapters - small desktop model	37
Installing internal drives - small desktop model	38
Drive specifications	38
Installing a drive	39
Installing a Rope Clip - small desktop model	41
Replacing the cover and connecting the cables - small desktop model	41
Removing the cover - desktop model	42
Locating components - desktop model	43
Identifying parts on the system board - desktop model	43
Installing memory - desktop model	44
Installing DIMMs	44
Installing adapters - desktop model	45
Installing internal drives - desktop model	46
Drive specifications	47
Installing a drive	48
To connect the first IDE CD drive or DVD drive	49
To connect an additional IDE CD drive or DVD drive	50
To connect an additional IDE hard disk drive	50
Installing a Rope Clip - desktop model	50
Replacing the cover and connecting the cables - desktop model	51
Removing the cover - microtower model	52
Locating components - microtower model	54
Moving the power supply - microtower model	54
Identifying parts on the system board - microtower model	56
Installing memory - microtower model	57
Installing DIMMs	57
Installing adapters - microtower model	58
Installing internal drives - microtower model	59
Drive specifications	60
Installing a drive	61
To connect the first IDE CD drive or DVD drive	62
To connect an additional IDE CD drive or DVD drive	63
To connect an additional IDE hard disk drive	63
Installing a Rope Clip - microtower model	63
Replacing the cover and connecting the cables - microtower model	64
Chapter 5. FRU Replacements	67
Identifying parts on the system board	67
Replacing a System Board - Small Desktop Model	68
Replacing a processor - Small Desktop Model	69
Power supply removal - Small Desktop Model	70
Replacing a System Board - Desktop Model	70
Replacing a processor - Desktop Model	71
Power supply removal - Desktop Model	72
Replacing a system board - Microtower Model	73
Replacing a processor - Microtower Model	74
Power supply removal - Microtower Model	74
Chapter 6. Symptom-to-FRU Index	77
SDRAM memory errors	78
Hard disk drive boot error	78
Power Supply Errors	79
Diagnostic error codes	80
Beep symptoms	98
No-beep symptoms	100
POST error codes	101
Miscellaneous error messages	115
Undetermined problems	117
Chapter 7. Parts	119
Small Desktop Model	119
Desktop Model	145
Microtower Model	167
Chapter 8. Additional Service Information	205
Security features	205
Passwords	205
Power-on password	205
Removing a power-on password	205
Administrator password	206
Administrator password control	206
Operating system password	206
Vital product data	206
Management Information Format (MIF)	206
Alert on LAN	207
BIOS levels	207
Flash (BIOS/VPD) update procedure	208
Flash recovery boot block jumper	208
Power management	210
Automatic configuration and power interface (ACPI) BIOS	210
Advanced Power Management	210
Automatic Hardware Power Management features	210
Setting Automatic Hardware Power Management features	211
Automatic Power-On features	211
Network settings	212
Flash over LAN (update POST/BIOS over network)	212
Wake on LAN	213
Chapter 9. Related service information	215
Safety information	215
General safety	215
Electrical safety	216
Safety inspection guide	217
Handling electrostatic discharge-sensitive devices	218
Grounding requirements	219
Safety notices (multi-lingual translations)	219
Send us your comments!	248
Problem determination tips	249
Notices	249

Match case Limit results 1 per page

Push the metal tab and slide the power supply unit upward.

Rotate the power supply outward as shown.

Chapter 4. Installing Options