Lenovo Q700 Lenovo IdeaCentre Q700 Hardware Maintenance Manual - Page 25

Power Supply Problems, POST error codes

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Chapter 6. Symptom-to-FRU Index Error The boot sector on the start-up drive is corrupted. The drive is defective. FRU/Action The drive must be formatted do the following: 1. Attempt to back-up the data on the failing hard disk drive. 2. Using the operating systems programs format the hard disk drive. Replace the hard disk drive. Power Supply Problems If you suspect a power problem, use the following procedures. Check/Verify FRU/Action Check the following for proper Reseat connectors installation. •• Power Cord •• On/Off Switch connector •• On/Off Switch Power Supply connector •• System Board Power Supply connectors •• Microprocessor(s) connection Check the power cord for continuity. Power Cord Check the power-on switch for Power-on Switch continuity. POST error codes Each time you power-on the system, it performs a series of tests that check the operation of the system and some options. This series of tests is called the Power-On Self-Test, or POST. POST does the following operations. • Checks some basic system-board operations • Checks the memory operation • Starts the video operation • Verifies that the boot drive is working If the POST detects a problem, an error message appears on the screen. A single problem can cause several error messages to appear. When you correct the cause of the first error message, the other error messages probably will not appear on the screen the next time you turn on the system. 23

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Chapter 6. Symptom-to-FRU Index
23
Error
FRU/Action
The boot sector on the start-up
drive is corrupted.
The drive must be formatted do the
following:
1.
Attempt to back-up the data on
the failing hard disk drive.
2.
Using the operating systems
programs format the hard disk
drive.
The drive is defective.
Replace the hard disk drive.
Power Supply Problems
If you suspect a power problem, use the following procedures.
Check/Verify
FRU/Action
Check the following for proper
installation.
Power Cord
•
On/Off Switch connector
•
On/Off Switch Power Supply
•
connector
System Board Power Supply
•
connectors
Microprocessor(s) connection
•
Reseat connectors
Check the power cord for continuity. Power Cord
Check the power-on switch for
continuity.
Power-on Switch
POST error codes
Each time you power-on the system, it performs a series of tests that
check the operation of the system and some options. This series of tests is
called the
Power-On Self-Test
, or
POST
. POST does the following operations.
•
Checks some basic system-board operations
•
Checks the memory operation
•
Starts the video operation
•
Verifies that the boot drive is working
If the POST detects a problem, an error message appears on the screen. A
single problem can cause several error messages to appear. When you correct
the cause of the first error message, the other error messages probably will
not appear on the screen the next time you turn on the system.