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Lenovo ThinkCentre A52 Hardware Maintenance Manual - Page 88

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No-beep symptoms Symptom/Error No beep during POST but computer works correctly. No beep during POST. FRU/Action System board 1. See "Undetermined problems" on page 88. 2. System Board 3. Memory Module 4. Any Adapter or Device 5. Riser Card 6. Power Cord 7. Power Supply 82 Hardware Maintenance Manual

Section	Page
Contents	5
Chapter 1. About this manual	7
Important Safety Information	7
Strategy for replacing FRUs for CTO, CMV, and GAV products	8
Product definition	8
FRU Identification for CTO, CMV, and GAV products	8
Using PEW	8
Using eSupport	9
Using the HMM	9
Important information about replacing RoHS compliant FRUs	9
Chapter 2. Safety information	11
General safety	11
Electrical safety	11
Safety inspection guide	13
Handling electrostatic discharge-sensitive devices	14
Grounding requirements	14
Safety notices (multi-lingual translations)	15
Chapter 3. General information	45
The ThinkVantage™ Productivity Center program	45
Additional information resources	45
Physical specifications	45
Types 8289, 8298, 8328, 8341, 8344, and 8382	46
Types 8287, 8296, 8299, 8327, 8340, 8343, and 8381	47
Types 8288, 8297, 8326, 8329, 8342, and 8380	48
Chapter 4. General Checkout	49
Problem determination tips	50
Chapter 5. Diagnostics using PC-Doctor for DOS	53
Starting PC-Doctor from the Rescue and Recovery workspace	53
Starting PC-Doctor from a diagnostic diskette or CD-ROM	54
Diagnostics program download	54
Navigating through the diagnostics programs	54
Running diagnostics tests	54
Test selection	55
Test results	55
Fixed disk advanced test (FDAT)	55
Quick and Full erase - hard drive	57
Viewing the test log	58
Chapter 6. Using the Setup Utility	59
Starting the Setup Utility program	59
Viewing and changing settings	59
Exiting from the Setup Utility program	59
Using passwords	59
User Password	60
Administrator Password	60
Setting, changing, and deleting a password	60
Using Security Profile by Device	60
Selecting a startup device	61
Selecting a temporary startup device	61
Changing the startup device sequence	61
Advanced settings	61
Chapter 7. Symptom-to-FRU Index	63
Hard disk drive boot error	63
Power Supply Errors	63
Diagnostic error codes	65
Beep symptoms	86
No-beep symptoms	88
POST error codes	89
Miscellaneous error messages	92
Undetermined problems	94
Chapter 8. FRU lists	95
Machine Type 8287	96
Machine Type 8288	106
Machine Type 8289	117
Machine Type 8296	128
Machine Type 8297	140
Machine Type 8298	151
Machine Type 8299	163
Machine Type 8326	170
Machine Type 8327	179
Machine Type 8328	187
Machine Type 8329	196
Machine Type 8340	206
Machine Type 8341	213
Machine Type 8342	222
Machine Type 8343	229
Machine Type 8344	236
Machine Type 8380	243
Machine Type 8381	253
Machine Type 8382	263
Chapter 9. Additional Service Information	273
Security features	273
Hardware controlled Passwords	273
Operating system password	273
Vital product data	273
Management Information Format (MIF)	273
BIOS levels	274
Flash update procedures	274
Updating (flashing) BIOS from a diskette or CD-ROM	274
Updating (flashing) BIOS from your operating system	274
Recovering from a POST/BIOS update failure	275
Power management	276
Automatic configuration and power interface (ACPI) BIOS	276
Automatic Power-On features	276
Recovering software using the Rescue and Recovery program	277
Starting the Rescue and Recovery workspace	277
Appendix. Notices	279
Television output notice	280