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ThinkCentre E73z Hardware Maintenance Manual
Models:
E73Z
10BL
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Troubleshooting
Specifications
Install
Error codes
Password
Hard disk drive boot error
Wireless LAN problem
Problem determination tips
Diagnostics
USB Setup
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Contents
ThinkCentre E73z Hardware Maintenance Manual
Second Edition January Copyright Lenovo 2013
Contents
Appendix A. Notices 115
Important safety information
About this manual
ThinkCentre E73z Hardware Maintenance Manual
Electrical safety
Safety information
General safety
ThinkCentre E73z Hardware Maintenance Manual
Safety inspection guide
Handling electrostatic discharge-sensitive devices
Safety notices multi-lingual translations
Grounding requirements
To Connect To Disconnect
≥18 kg 37 lbs ≥32 kg 70.5 lbs ≥55 kg 121.2 lbs
Safety information
Perigo
Cuidado
Para Conectar Para Desconectar
Perigo
Safety information
ThinkCentre E73z Hardware Maintenance Manual
Safety information
Connexion Déconnexion
≥18 kg 37 lbs ≥32 kg 70.5 lbs ≥55 kg 121.2 lbs
Vorsicht
Achtung
Arbeitsschutzrichtlinien beim Anheben der Maschine beachten
ThinkCentre E73z Hardware Maintenance Manual
Safety information
Pericolo
Per collegarsi Per scollegarsi
Prestare attenzione nel sollevare lapparecchiatura
ThinkCentre E73z Hardware Maintenance Manual
Peligro
No debe
Adopte procedimientos seguros al levantar el equipo
ThinkCentre E73z Hardware Maintenance Manual
Specifications
General information
Lenovo programs
Environment
Accessing Lenovo programs on the Windows 7 operating system
Accessing Lenovo programs from Control Panel
Program Icon name
Program Control Panel section Green text in Control Panel
Lenovo Support Web site
ThinkCentre E73z Hardware Maintenance Manual
Problem determination tips
General checkout
ThinkCentre E73z Hardware Maintenance Manual
Symptom Action
Troubleshooting and diagnostics
Basic troubleshooting
Troubleshooting procedure
Click Settings Click Control Panel
System Protection System Restore
Troubleshooting
Audio problems
No audio in Windows
Sound comes from one external speaker only
CD or DVD does not work
CD problems
No audio in DOS applications or games
DVD problems
Black screen instead of DVD video
DVD movie will not play
No audio or intermittent audio while playing DVD movie
Intermittent problems
Hard disk drive problems
Playback is very slow or choppy
Invalid disc or no disc found message
Keyboard, mouse, or pointing device problems
All or some keys on the keyboard do not work
Optical mouse
Mouse or pointing device does not work
Click Hardware and Sound Click Devices and Printers
Monitor problems
Wireless keyboard does not work
Pointer on the screen does not move smoothly with the mouse
Fingerprint reader does not work
Wrong characters appear on the screen
Image appears to be flickering
Networking problems
Ethernet problems
Image is discolored
Your computer cannot connect to the network
Adapter stops working for no apparent reason
Wake on LAN feature is not working
Click Start Control Panel Click Hardware and Sound
Option problems
Wireless LAN problem
Wireless WAN problem
Bluetooth problem
Performance and lockup problems
An option that was just installed does not work
An option that previously worked does not work now
Insufficient free hard disk drive space
Click Disk Cleanup
Click Programs Click Turn Windows features on or off
Click Disk Cleanup Click Clean up system files
Programs and Features area, click the Clean up button
Printer problems
Serial port problems
Insufficient memory
Click Defragment Now, then click Continue
Software problems
Software does not work as expected
USB problems
Diagnostics
Lenovo Solution Center
Using the Setup Utility program
Starting the Setup Utility program
Viewing and changing settings
Using passwords
Password considerations
Power-on password
Administrator password
Setting, changing, and deleting a password
USB Setup
Enabling or disabling a device
Selecting a startup device
Sata Controller
Selecting or changing the startup device sequence
Exiting the Setup Utility program
Selecting a temporary startup device
Symptom-to-FRU Index
Hard disk drive boot error
Power supply problems
Beep symptoms
Post error codes
Beep symptom FRU/Action
Short and 1 long beeps Dram memory error
Error code Post error message Description/Action
Display/Monitor
Miscellaneous error conditions
Message/Symptom FRU/Action
First device network
Second device hard disk
Undetermined problems
ThinkCentre E73z Hardware Maintenance Manual
Front connector, control, and indicator locations
Locations
Locating connectors on the rear of your computer
Locating major FRUs and CRUs
Locating major FRUs and CRUs
Number FRU description Self-service CRU Optional-service CRU
Locations of the parts and connectors on the system board
ThinkCentre E73z Hardware Maintenance Manual
Replacing FRUs
Removing and installing the computer stand
Removing and reinstalling the frame stand
Removing the frame stand
Removing and installing the monitor stand
Removing the monitor stand
Removing and reinstalling the feet stand
Removing the computer cover
Removing and installing the hard-disk-drive EMI shield
Removing the feet stand
Removing the hard-disk-drive EMI shield
Installing the hard-disk-drive EMI shield
Removing the hard disk drive from the bracket
What to do next
Removing the hard disk drive from the bracket
Replacing the optical drive
Removing the optical drive
Removing and reinstalling the system board shield
Installing the optical drive
Replacing the rear I/O assembly
Removing the system board shield
Removing the power cord connector
Removing the power cord connector from the rear I/O assembly
Removing the Vesa mount bracket
Replacing the power supply
Removing the Vesa mount bracket
Removing the two screws that secure the power supply
Replacing the microprocessor fan
Removing the microprocessor fan
Replacing the heat sink assembly
Replacing the microprocessor
Opening the retainer to access the microprocessor
Noting the orientation of the microprocessor in the socket
Installing the microprocessor
Replacing the card reader
Replacing the battery
Removing the card reader
Removing the battery
Replacing the converter board
Installing or replacing a memory module
Removing a memory module
Installing a memory module
Replacing the internal speakers
Replacing the integrated camera
Removing the internal speakers
Replacing the system board
Removing the integrated camera
ThinkCentre E73z Hardware Maintenance Manual
Replacing the LCD panel
Removing the foot stands
Removing the four screws that secure the LCD panel
Reconnecting the LCD panel cable to the system board
Replacing the Wi-Fi card
Completing the parts replacement
Removing the Wi-Fi card
Installing the computer cover
ThinkCentre E73z Hardware Maintenance Manual
Additional service information
Updating flashing the Bios from a disc
Click Download Drivers & Software Click Use Quick Path
Updating flashing the Bios from your operating system
Recovering from a POST/BIOS update failure
Power management
Automatic configuration and power interface Acpi Bios
Automatic Power-on features
Click Hardware and Sound Power Options
Appendix A. Notices
115
Television output notice
European conformance CE mark Trademarks
Index
117
Rear connectors
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