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Lenovo ThinkPad R400 Hardware Maintenance Manual - Page 89

Reading or writing the ECA information, Set ECA Information

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The algorithm that generates the number is designed to provide unique IDs until the year A.D. 3400. No two computers in the world have the same number. When you replace the system board, you must set the UUID on the new system board as follows: 1. Install the ThinkPad Hardware Maintenance Diskette Version 1.73 or later, and restart the computer. 2. From the main menu, select 4. Assign UUID. A new UUID is created and written. If a valid UUID already exists, it is not overwritten. Reading or writing the ECA information Information on Engineering Change Announcements (ECA) are stored in the EEPROM of the system board. The electronic storage of this information simplifies the procedure to check if the ECA has been previously applied to a machine. The machine does not need to be disassembled to check for the ECA application. To check what ECAs have been previously applied to the machine, use the ECA Information Read/Write function on the ThinkPad Hardware Maintenance Diskette Version 1.73 or later. 1. Insert the ThinkPad Hardware Maintenance Diskette Version 1.73 or later, and restart the computer. 2. From the main menu, select 6. Set ECA Information. 3. To read ECA information, select 2. Read ECA/rework number from EEPROM and follow the instruction. 4. To read box build date, select 5. Read box build date from EEPROM, and follow the instruction on the screen. After an ECA has been applied to the machine, the EEPROM must be updated to reflect the ECA's application. Use the ThinkPad Hardware Maintenance Diskette Version 1.73 or later to update the EEPROM. Note: Only the ECA number is stored in the EEPROM. The machine type of the ECA is assumed be the same as the machine type of the machine that had the ECA applied to it. 1. Insert the ThinkPad Hardware Maintenance Diskette Version 1.73 or later, and restart the computer. 2. From the main menu, select 6. Set ECA Information. 3. To write ECA information, select 1. Write ECA/rework number from EEPROM, and follow the instruction. 4. To write box build date, select 4. Write box build date from EEPROM, and follow the instruction on the screen. If the system board is being replaced, try to read the ECA information from the old system board and transfer the information to the new system. If the system board is inoperable, this will not be possible. FRU replacement notices 81

Section	Page
Contents	5
About this manual	7
Safety information	9
General safety	10
Electrical safety	11
Safety inspection guide	13
Handling devices that are sensitive to electrostatic discharge	14
Grounding requirements	14
Safety notices (multilingual translations)	15
Laser compliance statement (multilingual translations)	36
Important service information	47
Strategy for replacing FRUs	47
Strategy for replacing a hard disk drive	48
Important notice for replacing a system board	48
How to use error message	48
Strategy for replacing FRUs for CTO, CMV, and GAV	49
Product definition	49
FRU identification for CTO, CMV, and GAV products	49
General checkout	51
What to do first	52
Checkout guide	53
Diagnostics using PC-Doctor for DOS	53
Testing the computer	54
Detecting system information with PC-Doctor	55
Lenovo ThinkVantage Toolbox (Lenovo System Toolbox)	56
PC-Doctor for Windows	56
PC-Doctor for Rescue and Recovery	57
FRU tests	58
Power system checkout	60
Checking the AC adapter	60
Checking operational charging	61
Checking the battery pack	61
Checking the backup battery	62
Related service information	63
Restoring the factory contents by using Product Recovery discs	63
Restoring the factory contents by using Recovery Disc Set	64
Passwords	65
Power-on password	65
Hard-disk password	65
Supervisor password	66
How to remove the power-on password	66
How to remove the hard-disk password	67
Power management	68
Screen blank mode	68
Sleep (Standby) mode	68
Hibernation mode	69
Symptom-to-FRU index	70
Numeric error codes	70
Error messages	74
Beep symptoms	75
No-beep symptoms	75
LCD-related symptoms	76
Intermittent problems	77
Undetermined problems	77
Status indicators	79
Fn key combinations	83
FRU replacement notices	87
Screw notices	87
Retaining serial numbers	88
Restoring the serial number of the system unit	88
Retaining the UUID	88
Reading or writing the ECA information	89
Removing and replacing a FRU	91
1010 Battery pack	92
1020 Serial Ultrabay Slim device or Serial Ultrabay Enhanced device	93
1030 Hard disk drive (HDD) cover, HDD, and HDD rubber rails or solid state drive (SSD) and storage converter	94
1040 Palm rest or palm rest with fingerprint reader	96
1050 DIMM	99
1060 Backup battery	100
1070 Keyboard	101
1080 Modem daughter card (MDC-3.0)	103
1090 PCI Express Mini Card for wireless LAN/WiMAX	105
1100 PCI Express Mini Card for wireless WAN	108
1110 Intel Turbo Memory Minicard or Wireless USB PCI Express Half-Mini Card	110
1120 SIM card slot	112
1130 Keyboard bezel	114
1140 Speaker assembly	116
1150 Fan assembly	118
1160 CPU	123
1170 LCD assembly	124
1180 Base cover, USB sub card with cable, and PC Card/ExpressCard slots (or ExpressCard/Smart Card slots or ExpressCard/7-in-	127
1190 Structure frame	133
1200 System board and PC Card/Express Card slots (or ExpressCard/Smart Card slots or ExpressCard/7-in-1 Media Card Reader slo	137
2010 LCD front bezel	141
2020 LCD rear cover	143
2030 Inverter card or LED sub card	144
2040 Bluetooth daughter card (BDC-2.1)	145
2050 LCD magnesium frame, hinge assembly, and integrated camera	146
2060 Antenna assembly	149
2070 LCD panel and LCD cable	151
Locations	153
Front view	153
Rear view	154
Bottom view	155
Parts list	157
Overall	158
LCD FRUs	285
Keyboard	356
Miscellaneous parts	358
AC adapters	360
Power cords	361
Recovery discs	362
Windows XP Professional (32 bit) DVDs	362
Windows Vista Starter (32 bit) recovery DVDs	364
Windows Vista Home Basic (32 bit) recovery DVDs	365
Windows Vista Home Premium (32 bit) recovery DVDs	367
Windows Vista Business (32 bit) recovery DVDs	369
Windows Vista Business (64 bit) recovery DVDs	371
Windows Vista Ultimate (32 bit) recovery DVDs	372
Windows 7 Home Basic (32 bit) DVDs	374
Windows 7 Home Premium (32 bit) DVDs	375
Windows 7 Home Premium (64 bit) DVDs	377
Windows Professional (32 bit) DVDs	378
Windows Professional (64 bit) DVDs	380
Common service tools	382
Notices	383

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The algorithm that generates the number is designed to provide unique IDs until

the year A.D. 3400. No two computers in the world have the same number.

When you replace the system board, you must set the UUID on the new system

board as follows:

Install the ThinkPad Hardware Maintenance Diskette Version 1.73 or later, and

restart the computer.

From the main menu, select

4. Assign UUID

A new UUID is created and written. If a valid UUID already exists, it is not

overwritten.

Reading or writing the ECA information

Information on Engineering Change Announcements (ECA) are stored in the

EEPROM of the system board. The electronic storage of this information simplifies

the procedure to check if the ECA has been previously applied to a machine. The

machine does not need to be disassembled to check for the ECA application.

To check what ECAs have been previously applied to the machine, use the ECA

Information Read/Write function on the ThinkPad Hardware Maintenance Diskette

Version 1.73 or later.

Insert the ThinkPad Hardware Maintenance Diskette Version 1.73 or later, and

restart the computer.

From the main menu, select

6. Set ECA Information

To read ECA information, select

2. Read ECA/rework number from EEPROM

and follow the instruction.

To read box build date, select

5. Read box build date from EEPROM

, and

follow the instruction on the screen.

After an ECA has been applied to the machine, the EEPROM must be updated to

reflect the ECA’s application. Use the ThinkPad Hardware Maintenance Diskette

Version 1.73 or later to update the EEPROM.

Note:

Only the ECA number is stored in the EEPROM. The machine type of the

ECA is assumed be the same as the machine type of the machine that had the ECA

applied to it.

Insert the ThinkPad Hardware Maintenance Diskette Version 1.73 or later, and

restart the computer.

From the main menu, select

6. Set ECA Information

To write ECA information, select

1. Write ECA/rework number from EEPROM

and follow the instruction.

To write box build date, select

4. Write box build date from EEPROM

, and

follow the instruction on the screen.

If the system board is being replaced, try to read the ECA information from the old

system board and transfer the information to the new system. If the system board

is inoperable, this will not be possible.

FRU replacement notices