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Lenovo NetVista Hardware Maintenance Manual for NetVista 6018, 6058, 6059, 626 - Page 185

Undetermined problems, External Cache

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Undetermined problems Check the power supply voltages. See "Power supply" on page 108. If the voltages are correct, return here and continue with the following steps. 1. Power-off the computer. 2. Remove or disconnect the following components (if installed) one at a time. a. Non-IBM devices b. External devices (modem, printer, or mouse) c. Any adapters d. Memory modules Before removing or replacing memory modules, see "System board memory" on page 135. e. Extended video memory f. External Cache g. External Cache RAM h. Hard disk drive i. Diskette drive 3. Power-on the computer to re-test the system. 4. Repeat steps 1 through 3 until you find the failing device or adapter. If all devices and adapters have been removed, and the problem continues, replace the system board. See "Replacing a system board" on page 125. Chapter 3. Types 6058/6059/6269/6578/6579 171

Section	Page
About this manual	5
Important Safety Information	6
Related Publications	9
Contents	11
Chapter 1. IBM PC Enhanced Diagnostics error codes	15
Chapter 2. Types 6568/6569/6648/6649	35
Product description	37
Specifications Information (ISO/ANSI)	38
Specifications - Types 6568/6569/6648/6649	38
General checkout	40
Module test menu and hardware configuration report	42
Keyboard	43
Printer	43
Power supply	44
20-pin main power supply connection	45
Display	46
Diagnostics, test and recovery information	47
Power-On Self-Test (POST)	47
POST beep codes	47
Error code format	48
Product Recovery Program menu	48
IBM PC Enhanced Diagnostics	49
Enhanced Diagnostics download or diskette	49
Navigating through the diagnostics programs	50
Running diagnostics tests	50
Test selection	50
IBM PC Enhanced Memory Diagnostics	50
Alert-On LAN™ test	51
Asset ID™ test	51
Test results	51
Hard file Smart test	52
IBM Fixed Disk Optimized Test	52
Quick and Full erase - hard drive	53
Iomega Zip drive test	54
Asset EEPROM backup	54
Viewing the test log	54
SIMM/DIMM/RIMM memory errors	54
Setup Utility program	55
Hard disk drive boot error	56
When to use the Low-Level Format program	56
Preparing the hard disk drive for use	57
Additional service information	58
Replacing a processor	59
Replacing a system board	59
Security features	60
Passwords	60
Power-on password	60
Removing a power-on password	60
Administrator password	61
Administrator password control	61
Operating system password	61
Vital product data	61
Management Information Format (MIF)	61
Alert on LAN	62
Hard disk drive jumper settings	62
CD-ROM drive jumper settings	63
BIOS levels	63
Flash (BIOS/VPD) update procedure	64
Flash recovery boot block jumper	64
Power management	65
Automatic configuration and power interface (ACPI) BIOS	65
Advanced Power Management	65
Automatic Hardware Power Management features	66
Setting Automatic Hardware Power Management features	66
Automatic Power-On features	67
Network settings	67
Flash over LAN (update POST/BIOS over network)	68
Wake on LAN	68
System board memory	69
Supported memory configuration	69
Computer exploded view - Types 6568/6569/6648/6649	69
Input/Output connectors	70
Cover removal	71
Replacing the cover	71
EMC shield (CD-ROM drive bay)	72
EMC shield (system board)	72
Installing adapters	73
Adapter slots	73
CD-ROM drive removal and replacement	74
Internal drive removal	77
3.5\	77
Hard drive removal	78
Fan/speaker bracket removal	78
Power supply removal	79
Components of the riser card	79
A40 and A40P system board layout	81
System board locations	81
A40/A40P System board jumper settings	81
A40/A40P Clear CMOS/Flash Boot Block Recovery	81
A40/ A40P Processor Speed Settings	82
A40/A40P Diskette Write Access	82
Symptom-to-FRU index	83
Beep symptoms	84
No-beep symptoms	86
POST error codes	86
Miscellaneous error messages	101
Undetermined problems	104
Model tables - Country/Region/Language	105
Parts - Types 6568/6569/6648/6649	106
Parts listing	107
Keyboards - 6568/6569 (PCNext Lite Pearl White)	109
Keyboards - 6648/6649 (PCNext Lite Black)	110
Computer Power Cords	112
Display and Monitor Information	112
Special tools	112
Chapter 3. Types 6058/6059/6269/6578/6579	113
Product description	115
Specifications Information (ISO/ANSI)	116
Specifications - Types 6058/60596269/6578/6579	116
General checkout	118
Module test menu and hardware configuration report	120
Keyboard	121
Printer	121
Power supply	122
20-pin main power supply connection	123
Display	124
Diagnostics, test and recovery information	125
Power-On Self-Test (POST)	125
POST beep codes	126
Error code format	126
Product Recovery Program menu	126
IBM PC Enhanced Diagnostics	127
Enhanced Diagnostics download or diskette	127
Navigating through the diagnostics programs	128
Running diagnostics tests	128
Test selection	128
IBM PC Enhanced Memory Diagnostics	129
Alert-On LAN test	129
Asset ID test	129
Test results	129
Hard file Smart test	131
IBM Fixed Disk Optimized Test	131
Quick and Full erase - hard drive	133
Iomega Zip drive test	133
Asset EEPROM backup	134
Viewing the test log	134
SIMM/DIMM/RIMM memory errors	135
Setup Utility program	136
Hard disk drive boot error	137
When to use the Low-Level Format program	137
Preparing the hard disk drive for use	137
Additional service information	138
Replacing a processor	139
Replacing a system board	139
Security features	139
Passwords	140
Power-on password	140
Removing a power-on password	140
Administrator password	140
Administrator password control	141
Operating system password	141
Vital product data	141
Management Information Format (MIF)	141
Alert on LAN	142
Hard disk drive jumper settings	142
CD-ROM drive jumper settings	143
BIOS levels	143
Flash (BIOS/VPD) update procedure	144
Flash recovery boot block jumper	145
Power management	145
Automatic configuration and power interface (ACPI) BIOS	145
Advanced Power Management	145
Automatic Hardware Power Management features	146
Setting Automatic Hardware Power Management features	146
Automatic Power-On features	147
Network settings	147
Flash over LAN (update POST/BIOS over network)	148
Wake on LAN	149
System board memory	149
Supported memory configuration	149
Computer exploded view - Types 6058/6059/6269/6578/6579	150
Input/Output connectors - Type 6269	151
Input/Output connectors - Types 6058/6059/6578/6579	152
Cover removal	153
Replacing the cover	153
EMC shield (front)	154
EMC shield (system board)	154
Installing adapters	154
Adapter slots	154
Air duct (Types 6058/6059/6278/6279)	155
CD-ROM drive removal	156
Fan/speaker bracket removal	156
Hard drive removal	157
Power supply removal	158
A20 system board layout (Type 6269)	160
System board locations	160
A20 System board jumper settings	160
A20 Clear CMOS/Flash Boot Block Recovery	160
A20 Processor Speed Settings	161
A20 Diskette Write Access	161
A40/A40P system board layout (Types 6058/6059/6578/6579)	162
System board locations	162
A40/A40P System board jumper settings	162
A40/A40P Clear CMOS/Flash Boot Block Recovery	163
A40/A40P Processor Speed Settings	163
A40/A40P Diskette Write Access	163
Symptom-to-FRU index	164
Beep symptoms	164
No-beep symptoms	166
POST error codes	167
Miscellaneous error messages	181
Undetermined problems	185
Model tables - Country/Region/Language	186
Parts - Types 6058/6059/6269/6578/6579	187
Parts listing	188
Keyboards - PCNext Lite Pearl White	194
Computer Power Cords	195
Recovery CDs	196
Display and Monitor Information	196
Special tools	197
Chapter 4. Related Service Information	199
Safety information	199
General safety	199
Electrical safety	200
Safety inspection guide	202
Handling electrostatic discharge-sensitive devices	203
Grounding requirements	203
Safety notices (multi-lingual translations)	203
Send us your comments!	241
Problem determination tips	241
Notices	242
Trademarks	243
Miscellaneous Information	243