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Lenovo ThinkCentre M77 Hardware Maintenance Manual (HMM) - ThinkCentre M77 - Page 69

Thermal Sensors Test Passed, Voltage Sensors Voltage Regulator

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Diagnostic Error Code 170-199-XXX Voltage Sensor(s) test failed, cause unknown 170-250-XXX 170-251-XXX Voltage Sensor(s) Voltage limit error 170-254-XXX Voltage Sensor(s) Voltage Regulator Module error 175-000-XXX Thermal Sensor(s) Test Passed 175-0XX-XXX Thermal Sensor(s) failure 175-195-XXX Thermal Sensor(s) Test aborted by user 175-196-XXX Thermal Sensor(s) test halt, error threshold exceeded 175-197-XXX Thermal Sensor(s) test warning 175-198-XXX Thermal Sensor(s) test aborted 175-199-XXX Thermal Sensor(s) test failed, cause unknown 175-250-XXX 175-251-XXX Thermal Sensor(s) limit error 185-000-XXX Asset Security Test Passed 185-XXX-XXX Asset Security failure 185-278-XXX Asset Security Chassis Intrusion 201-000-XXX System Memory Test Passed FRU/Action 1. See "Undetermined problems" on page 71 2. Flash the system and re-test. See "Updating (flashing) the BIOS from a disc" on page 279 3. Replace component under function test 1. Power supply 2. System board 1. Voltage Regulator Module (VRM) 2. Microprocessor 3. System board No action 1. Flash system 2. System board Information only Re-start the test, if necessary 1. Press F3 to review the log file 2. Re-start the test to reset the log file 1. Make sure the component that is called out is connected and/or enabled. See Chapter 6 "Using the Setup Utility program" on page 43 2. Re-run test 3. Replace the component that is called out in warning statement 4. Replace the component under test 1. If a component is called out, make sure it is connected and/or enabled 2. Flash the system and re-test. See "Updating (flashing) the BIOS from a disc" on page 279 3. Go to "Undetermined problems" on page 71 1. See "Undetermined problems" on page 71 2. Flash the system and re-test. See "Updating (flashing) the BIOS from a disc" on page 279 3. Replace component under function test 1. Check fans 2. Check Power supply voltages 3. Microprocessor 4. System board No action 1. Flash system 2. System board 1. Assure Asset Security Enabled 2. C2 Cover Switch 3. System board No action Chapter 7. Symptom-to-FRU index 65

Section	Page
Chapter 1. About this manual	5
Important safety information	5
Chapter 2. Safety information	7
General safety	7
Electrical safety	7
Voltage-selection switch	9
Safety inspection guide	9
Handling electrostatic discharge-sensitive devices	10
Grounding requirements	10
Safety notices (multi-lingual translations)	10
Chapter 3. General information	37
Lenovo Welcome	37
Lenovo ThinkVantage Tools	37
SimpleTap	37
Lenovo Solution Center	38
Additional information resources	38
Specifications	38
For machine types: 1982, 1983, 1985, 1986, 1987, 1990, 1992, 1993, 1994, and 1995.	39
For machine types: 1996, 1997, 2002, 2010, 2208, 2209, 2221, 2224, 2226, and 2227.	40
Chapter 4. General checkout	41
Problem determination tips	41
Chapter 5. Diagnostic programs	43
Lenovo ThinkVantage Toolbox	43
Lenovo Solution Center	43
PC-Doctor for DOS	44
Creating a diagnostic disc	44
Running the diagnostic program from the diagnostic disc	44
Navigating through the diagnostic programs	44
Running tests	44
Viewing the test log	46
Chapter 6. Using the Setup Utility program	47
Starting the Setup Utility program	47
Viewing and changing settings	47
Using passwords	47
Password considerations	48
Power-On Password	48
Administrator Password	48
Hard Disk Password	48
Setting, changing, and deleting a password	48
Erasing lost or forgotten passwords (clearing CMOS)	49
Enabling or disabling a device	49
Selecting a startup device	50
Selecting a temporary startup device	50
Selecting or changing the startup device sequence	50
Enabling ErP compliance mode	50
Exiting the Setup Utility program	51
Chapter 7. Symptom-to-FRU index	53
Hard disk drive boot error	53
Power supply problems	53
Diagnostic error codes	53
Beep symptoms	71
POST error codes	71
Miscellaneous error messages	73
Undetermined problems	75
Chapter 8. Replacing FRUs (Machine Types: 1982, 1983, 1985, 1986, 1987, 1990, 1992, 1993, 1994, and 1995.)	77
Locations	77
Locating connectors, controls, and indicators on the front of your computer	78
Locating connectors on the rear of your computer	79
Locating components	80
Locating parts on the system board	81
Locating internal drives	82
Handling static-sensitive devices	82
Installing or replacing hardware	83
Removing the computer cover	83
Removing and reinstalling the front bezel	84
Installing or replacing a PCI card	85
Installing or replacing a memory module	88
Installing or replacing the optical drive	90
Installing or replacing the card reader	92
Replacing the battery	96
Replacing the power supply assembly	97
Replacing the heat sink and fan assembly	99
Replacing the microprocessor	101
Replacing the primary hard disk drive	103
Replacing the secondary hard disk drive	105
Replacing the front fan assembly	107
Replacing the rear fan	109
Replacing the front audio and USB assembly	111
Replacing the internal speaker	112
Replacing the system board	114
Completing the parts replacement	116
Chapter 9. Replacing FRUs (Machine Types: 1996, 1997, 2002, 2010, 2208, 2209, 2221, 2224, 2226, and 2227.)	119
Locations	119
Locating connectors, controls, and indicators on the front of your computer	120
Locating connectors on the rear of your computer	121
Locating components	122
Locating parts on the system board	123
Locating internal drives	124
Handling static-sensitive devices	124
Installing or replacing hardware	125
Opening the computer cover	125
Removing and reinstalling the front bezel	126
Accessing the system board components and drives	128
Installing or replacing a memory module	129
Installing or replacing a PCI card	131
Installing or replacing the card reader	133
Replacing the battery	138
Replacing the hard disk drive	139
Replacing the optical drive	142
Replacing the heat sink and fan assembly	144
Replacing the power supply assembly	147
Replacing the microprocessor	152
Replacing the front audio and USB assembly	155
Replacing the system fan	156
Replacing the internal speaker	158
Replacing the system board	162
Completing the parts replacement	164
Chapter 10. FRU lists	165
Overall: 1982, 1983, 1985, 1986, 1987, 1990, 1992, 1993, 1994, and 1995	165
Mechanical FRUs	171
Keyboard and Mouse	176
Adapters and miscellaneous FRUs	193
Power Cords	195
Recovery discs	200
Windows 7 Home Basic 32 SP1 Recovery CD	200
Windows 7 Home Premium 32 SP1 Recovery CD	202
Windows 7 Home Premium 64 SP1 Recovery CD	204
Windows 7 Professional 32 SP1 Recovery CD	204
Windows 7 Professional 64 SP1 Recovery CD	208
Windows 7 Ultimate 32 SP1 Recovery CD	211
Windows 7 Ultimate 64 SP1 Recovery CD	212
Windows 7 Starter 32 SP1 Recovery CD	212
Overall: MT 1996, 1997, 2010, 2209, and 2227	213
Mechanical FRUs	222
Keyboard and Mouse	230
Adapters and miscellaneous FRUs	255
Power Cords	257
Recovery discs	264
Windows 7 Home Basic 32 SP1 Recovery CD	264
Windows 7 Home Premium 32 SP1 Recovery CD	266
Windows 7 Home Premium 64 SP1 Recovery CD	269
Windows 7 Professional 32 SP1 Recovery CD	270
Windows 7 Professional 64 SP1 Recovery CD	276
Windows 7 Ultimate 32 SP1 Recovery CD	280
Windows 7 Ultimate 64 SP1 Recovery CD	281
Windows 7 Starter 32 SP1 Recovery CD	281
Chapter 11. Additional service information	283
Security features	283
Hardware-controlled passwords	283
Operating system password	283
Vital Product Data	283
BIOS levels	283
Updating (flashing) the BIOS from a disc	283
Updating (flashing) the BIOS from your operating system	284
Recovering from a POST and BIOS update failure	284
Power management	285
Advanced Configuration and Power Interface (ACPI) BIOS	285
Automatic Power-On features	285
Appendix A. Notices	287
Television output notice	288
Europeanpean conformance CE mark	288
Trademarks	288

Match case Limit results 1 per page

Diagnostic Error Code

FRU/Action

170-199-XXX

Voltage Sensor(s) test failed, cause

unknown

1. See “Undetermined problems” on page 71

2. Flash the system and re-test. See “Updating

(ﬂashing) the BIOS from a disc” on page 279

3. Replace component under function test

170-250-XXX 170-251-XXX

Voltage Sensor(s) Voltage

limit error

1. Power supply

2. System board

170-254-XXX

Voltage Sensor(s) Voltage Regulator

Module error

1. Voltage Regulator Module (VRM)

2. Microprocessor

3. System board

175-000-XXX

Thermal Sensor(s) Test Passed

No action

175-0XX-XXX

Thermal Sensor(s) failure

1. Flash system

2. System board

175-195-XXX

Thermal Sensor(s) Test aborted by user

Information only Re-start the test, if necessary

175-196-XXX

Thermal Sensor(s) test halt, error threshold

exceeded

1. Press F3 to review the log ﬁle

2. Re-start the test to reset the log ﬁle

175-197-XXX

Thermal Sensor(s) test warning

1. Make sure the component that is called out is

connected and/or enabled. See Chapter 6 “Using the

Setup Utility program” on page 43

2. Re-run test

3. Replace the component that is called out in warning

statement

4. Replace the component under test

175-198-XXX

Thermal Sensor(s) test aborted

1. If a component is called out, make sure it is

connected and/or enabled

2. Flash the system and re-test. See “Updating

(ﬂashing) the BIOS from a disc” on page 279

3. Go to “Undetermined problems” on page 71

175-199-XXX

Thermal Sensor(s) test failed, cause

unknown

1. See “Undetermined problems” on page 71

2. Flash the system and re-test. See “Updating

(ﬂashing) the BIOS from a disc” on page 279

3. Replace component under function test

175-250-XXX 175-251-XXX

Thermal Sensor(s) limit error

1. Check fans

2. Check Power supply voltages

3. Microprocessor

4. System board

185-000-XXX

Asset Security Test Passed

No action

185-XXX-XXX

Asset Security failure

1. Flash system

2. System board

185-278-XXX

Asset Security Chassis Intrusion

1. Assure Asset Security Enabled

2. C2 Cover Switch

3. System board

201-000-XXX

System Memory Test Passed

No action

Chapter 7

Symptom-to-FRU index