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Item # 9278 FRUs 9 System board, 946GZ B ver1.0 (models CTO A1Q A2A A2T A2B A2H B1S B1P B1Y B2G 41A 41T 51Q D1Q D2A D2T D2C D2B D2H D3G G1A G1T A1K A1R A2J A3J A4J A5J A6J A7J A8J A9J AAJ ABJ ACJ ADJ B3J B4J B5J B6J B7J B8J B9J BAJ BBJ BCJ BDJ BEJ 21B 21H 21J 22J 23J 24J 25J 26J 27J 28J 29J 2AJ 2BJ 2CJ 2DS 2DP 2DY D4S D4P D4Y D4J D5J D6J D7J D8J D9J DAJ DBJ DCJ DDJ DEJ 91A 91T F2G F2C F2B F2H H1K H1R H2K H2R H3K H3R H4K H4R H5K H5R DJB DJH F3K H6A H6V H6K H8B H8H) Note: When ordering a new system board, you must also order a new retention module for the heat sink. 9 System board, 946GZ ver1.2 (models CTO A1Q A2A A2T A2B A2H B1S B1P B1Y B2G 41A 41T 51Q D1Q D2A D2T D2C D2B D2H D3G G1A G1T A1K A1R A2J A3J A4J A5J A6J A7J A8J A9J AAJ ABJ ACJ ADJ B3J B4J B5J B6J B7J B8J B9J BAJ BBJ BCJ BDJ BEJ 21B 21H 21J 22J 23J 24J 25J 26J 27J 28J 29J 2AJ 2BJ 2CJ 2DS 2DP 2DY D4S D4P D4Y D4J D5J D6J D7J D8J D9J DAJ DBJ DCJ DDJ DEJ 91A 91T F2G F2C F2B F2H H1K H1R H2K H2R H3K H3R H4K H4R H5K H5R DJB DJH F3K H6A H6V H6K H8B H8H) Note: When ordering a new system board, you must also order a new retention module for the heat sink. 9 System board, 946GZ (modify PCB solve Conroe CPU issue and modify PCB solve Japan smokeless issue) ver1.2 matrix from 43C3504 & 43C3505 (models CTO A1Q A2A A2T A2B A2H B1S B1P B1Y B2G 41A 41T 51Q D1Q D2A D2T D2C D2B D2H D3G G1A G1T A1K A1R A2J A3J A4J A5J A6J A7J A8J A9J AAJ ABJ ACJ ADJ B3J B4J B5J B6J B7J B8J B9J BAJ BBJ BCJ BDJ BEJ 21B 21H 21J 22J 23J 24J 25J 26J 27J 28J 29J 2AJ 2BJ 2CJ 2DS 2DP 2DY D4S D4P D4Y D4J D5J D6J D7J D8J D9J DAJ DBJ DCJ DDJ DEJ 91A 91T F2G F2C F2B F2H H1K H1R H2K H2R H3K H3R H4K H4R H5K H5R DJB DJH F3K H6A H6V H6K H8B H8H) Note: When ordering a new system board, you must also order a new retention module for the heat sink. 9 System board, 946GZ (models CTO A1Q A2A A2T A2B A2H B1S B1P B1Y B2G 41A 41T 51Q D1Q D2A D2T D2C D2B D2H D3G G1A G1T A1K A1R A2J A3J A4J A5J A6J A7J A8J A9J AAJ ABJ ACJ ADJ B3J B4J B5J B6J B7J B8J B9J BAJ BBJ BCJ BDJ BEJ 21B 21H 21J 22J 23J 24J 25J 26J 27J 28J 29J 2AJ 2BJ 2CJ 2DS 2DP 2DY D4S D4P D4Y D4J D5J D6J D7J D8J D9J DAJ DBJ DCJ DDJ DEJ 91A 91T F2G F2C F2B F2H H1K H1R H2K H2R H3K H3R H4K H4R H5K H5R DJB DJH F3K H6A H6V H6K H8B H8H) 10 220W Small desktop power supply (non-smokeless) (models CTO A2A A2T B1S B1P B1Y B2G 41A 41T D2A D2T D3G G1A G1T A1K A1R 2DS 2DP 2DY D4S D4P D4Y 91A 91T F2G H1K H1R H2K H2R H3K H3R H4K H4R H5K H5R) 10 220W Small desktop power supply (smokeless -- Japanese) (models A2J A3J A4J A5J A6J A7J A8J A9J AAJ ABJ ACJ ADJ B3J B4J B5J B6J B7J B8J B9J BAJ BBJ BCJ BDJ BEJ 21J 22J 23J 24J 25J 26J 27J 28J 29J 2AJ 2BJ 2CJ D4J D5J D6J D7J D8J D9J DAJ DBJ DCJ DDJ DEJ) 10 220 Watt Power Supply - China (models CTO-A A1Q A2B A2H 51Q D1Q D2C D2B D2H 21B 21H F2C F2B F2H) 10 220 Watt Power Supply - WW (models CTO A2A A2T B1S B1P B1Y B2G 41A 41T D2A D2T D3G G1A G1T A1K A1R 2DS 2DP 2DY D4S D4P D4Y 91A 91T F2G H1K H1R H2K H2R H3K H3R H4K H4R H5K H5R) 10 220 Watt Power Supply - china (models CTO-A A1Q A2B A2H 51Q D1Q D2C D2B D2H 21B 21H F2C F2B F2H) FRU# 43C3504 43C3505 43C8359 45R7728 41N3109 41N3119 41N3493 41A9655 41A9652 CRU Tier N N N N N N N N N RoHS? Y Y Y Y Y Y Y Y Y The FRUs listed in the following tables are not illustrated. 410 Hardware Maintenance Manual

Section	Page
Contents	5
Chapter 1. About this manual	7
Important Safety Information	7
Important information about replacing RoHS compliant FRUs	8
Chapter 2. Safety information	9
General safety	9
Electrical safety	9
Safety inspection guide	11
Handling electrostatic discharge-sensitive devices	12
Grounding requirements	12
Safety notices (multi-lingual translations)	13
Chapter 3. General information	43
The ThinkVantage™ Productivity Center program	43
Additional information resources	43
Specifications	44
Types 8700, 8701, 8705, 8717, 8973, 8975, 8979, 8983, 8985, 8991, 8995, 9265, 9269, 9277, 9279, 9283, 9287, 9379, 9383, 9387,	44
Types 8013, 8702, 8706, 8716, 8970, 8972, 8976, 8980, 8982, 8986, 8992, 8994, 9266, 9276, 9278, 9282, 9286, 9288, 9374, 9378,	45
Chapter 4. General Checkout	47
Problem determination tips	47
Chapter 5. Diagnostics	49
PC-Doctor for Windows	49
PC-Doctor for DOS	49
Creating a diagnostic CD image	50
Creating diagnostic diskettes	50
Running diagnostics from the CD or diskettes	50
Running diagnostics from the Rescue and Recovery workspace	51
PC-Doctor for Windows PE	51
Running diagnostics from the Rescue and Recovery workspace	51
Navigating through the diagnostics programs	52
Running tests	52
Test results	52
Fixed disk advanced test (FDAT)	53
Quick and Full erase - hard drive	54
Viewing the test log	55
Chapter 6. Using the Setup Utility	57
Starting the Setup Utility program	57
Viewing and changing settings	57
Using passwords	57
User Password	57
Setting, changing, and deleting a user password	57
Administrator Password	58
Setting, changing, and deleting an administrator password	58
Selecting a startup device	59
Selecting a temporary startup device	59
Changing the startup device sequence	59
Exiting from the Setup Utility program	59
Chapter 7. Symptom-to-FRU Index	61
Hard disk drive boot error	61
Power Supply Problems	61
Diagnostic error codes	63
Beep symptoms	84
POST error codes	85
Miscellaneous error messages	87
Undetermined problems	88
Chapter 8. Replacing FRUs (desktop computers)	91
Rear connectors	92
Removing the cover	93
Locations	94
Identifying parts on the system board	95
Machine types 8013, 8716, 8976, 8986, 9266, 9282, 9374, 9384, 9646, and 9647	95
Machine types 8706, 8972, 8982, 8994, 9278, 9288, 9380, 9632, 9648, and 9649	96
Machine types 8702, 8970, 8980, 8992, 9276, 9286, 9378, and 9628	97
Replacing a memory module	97
Replacing the CMOS battery	100
Replacing the power supply	100
Replacing the system board	103
Types 8702, 8706, 8970, 8972, 8980, 8982, 8992, 8994, 9276, 9278, 9286, 9288, 9378, 9380, 9628, 9632, and 9649	103
Types 8013, 8716, 8976, 8986, 9266, 9282, 9374, 9384, and 9647	107
Replacing the microprocessor	111
Types 8702, 8706, 8970, 8972, 8980, 8982, 8992, 8994, 9276, 9278, 9286, 9288, 9378, 9380, 9628, 9632, and 9649	111
Types 8013, 8716, 8976, 8986, 9266, 9282, 9374, 9384, and 9647	114
Replacing the hard disk drive	118
Replacing an optical drive	121
Replacing the diskette drive	123
Replacing the power switch/LED assembly	125
Replacing the front panel card	127
Replacing the system fan assembly	128
Replacing a PCI adapter	130
Completing the FRU replacement	130
Chapter 9. Replacing FRUs (tower computers)	133
Rear connectors	134
Removing the cover	135
Locations	136
Identifying parts on the system board	136
Machine types 8700, 8717, 8979, 8991, 9269, 9283, 9383, 9631, and 9646	137
Machine types 8705, 8975, 8985, 9265, 9279, 9379, 9389, 9637, and 9648	138
Machine types 8701, 8973, 8983, 8995, 9277, 9287, 9387, and 9635	139
Removing and replacing the front bezel	139
Replacing the power supply	140
Replacing the system board	141
Types 8701, 8705, 8973, 8975, 8983, 8985, 8995, 9265, 9277, 9279, 9287, 9379, 9387, 9389, 9635, 9637, and 9648	141
Types 8700, 8717, 8979, 8991, 9269, 9283, 9383, 9631, and 9646	146
Replacing the microprocessor	149
Types 8701, 8705, 8973, 8975, 8983, 8985, 8995, 9265, 9277, 9279, 9287, 9379, 9387, 9389, 9635, 9637, and 9648	149
Types 8700, 8717, 8979, 8991, 9269, 9283, 9383, 9631, and 9646	153
Replacing a memory module	157
Replacing a PCI adapter	158
Replacing the hard disk drive	159
Replacing an optical drive	162
Replacing the diskette drive	163
Replacing the system fan assembly	163
Replacing the front audio/USB assembly	165
Replacing the power switch/LED assembly	165
Replacing the CMOS battery	165
Completing the FRU replacement	166
Chapter 10. FRU lists	167
Machine Type 8013	167
Machine Type 8700	175
Machine Type 8701	185
Machine Type 8702	195
Machine Type 8705	205
Machine Type 8706	217
Machine Type 8970	227
Machine Type 8972	236
Machine Type 8973	245
Machine Type 8975	254
Machine Type 8976	263
Machine Type 8979	270
Machine Type 8980	279
Machine Type 8982	288
Machine Type 8983	298
Machine Type 8985	307
Machine Type 8986	317
Machine Type 8991	325
Machine Type 8992	335
Machine Type 8994	345
Machine Type 8995	356
Machine Type 9265	365
Machine Type 9266	376
Machine Type 9269	385
Machine Type 9276	395
Machine Type 9277	403
Machine Type 9278	412
Machine Type 9279	423
Machine Type 9282	433
Machine Type 9283	441
Machine Type 9286	450
Machine Type 9287	458
Machine Type 9288	467
Machine Type 9374	476
Machine Type 9378	486
Machine Type 9379	495
Machine Type 9380	504
Machine Type 9383	513
Machine Type 9384	522
Machine Type 9387	534
Machine Type 9389	543
Machine Type 9628	553
Machine Type 9631	562
Machine Type 9632	573
Machine Type 9635	586
Machine Type 9637	596
Chapter 11. Additional Service Information	611
Security features	611
Hardware controlled Passwords	611
Operating system password	611
Vital product data	611
Management Information Format (MIF)	611
BIOS levels	612
Flash update procedures	612
Updating (flashing) BIOS from a diskette	612
Recovering from a POST/BIOS update failure	612
Power management	613
Automatic configuration and power interface (ACPI) BIOS	613
Automatic Power-On features	613
Appendix. Notices	615
Television output notice	616

Match case Limit results 1 per page

Item

9278 FRUs

FRU#

CRU

Tier

RoHS?

System board, 946GZ B ver1.0 (models CTO A1Q A2A A2T A2B A2H B1S

B1P B1Y B2G 41A 41T 51Q D1Q D2A D2T D2C D2B D2H D3G G1A G1T

A1K A1R A2J A3J A4J A5J A6J A7J A8J A9J AAJ ABJ ACJ ADJ B3J B4J B5J

B6J B7J B8J B9J BAJ BBJ BCJ BDJ BEJ 21B 21H 21J 22J 23J 24J 25J 26J 27J 28J

29J 2AJ 2BJ 2CJ 2DS 2DP 2DY D4S D4P D4Y D4J D5J D6J D7J D8J D9J DAJ

DBJ DCJ DDJ DEJ 91A 91T F2G F2C F2B F2H H1K H1R H2K H2R H3K

H3R H4K H4R H5K H5R DJB DJH F3K H6A H6V H6K H8B H8H)

Note:

When ordering a new system board, you must also order a new

retention module for the heat sink.

43C3504

System board, 946GZ ver1.2 (models CTO A1Q A2A A2T A2B A2H B1S

B1P B1Y B2G 41A 41T 51Q D1Q D2A D2T D2C D2B D2H D3G G1A G1T

A1K A1R A2J A3J A4J A5J A6J A7J A8J A9J AAJ ABJ ACJ ADJ B3J B4J B5J

B6J B7J B8J B9J BAJ BBJ BCJ BDJ BEJ 21B 21H 21J 22J 23J 24J 25J 26J 27J 28J

29J 2AJ 2BJ 2CJ 2DS 2DP 2DY D4S D4P D4Y D4J D5J D6J D7J D8J D9J DAJ

DBJ DCJ DDJ DEJ 91A 91T F2G F2C F2B F2H H1K H1R H2K H2R H3K

H3R H4K H4R H5K H5R DJB DJH F3K H6A H6V H6K H8B H8H)

Note:

When ordering a new system board, you must also order a new

retention module for the heat sink.

43C3505

System board, 946GZ (modify PCB solve Conroe CPU issue and modify

PCB solve Japan smokeless issue) ver1.2 matrix from 43C3504 & 43C3505

(models CTO A1Q A2A A2T A2B A2H B1S B1P B1Y B2G 41A 41T 51Q

D1Q D2A D2T D2C D2B D2H D3G G1A G1T A1K A1R A2J A3J A4J A5J

A6J A7J A8J A9J AAJ ABJ ACJ ADJ B3J B4J B5J B6J B7J B8J B9J BAJ BBJ

BCJ BDJ BEJ 21B 21H 21J 22J 23J 24J 25J 26J 27J 28J 29J 2AJ 2BJ 2CJ 2DS

2DP 2DY D4S D4P D4Y D4J D5J D6J D7J D8J D9J DAJ DBJ DCJ DDJ DEJ

91A 91T F2G F2C F2B F2H H1K H1R H2K H2R H3K H3R H4K H4R H5K

H5R DJB DJH F3K H6A H6V H6K H8B H8H)

Note:

When ordering a new system board, you must also order a new

retention module for the heat sink.

43C8359

System board, 946GZ (models CTO A1Q A2A A2T A2B A2H B1S B1P B1Y

B2G 41A 41T 51Q D1Q D2A D2T D2C D2B D2H D3G G1A G1T A1K A1R

A2J A3J A4J A5J A6J A7J A8J A9J AAJ ABJ ACJ ADJ B3J B4J B5J B6J B7J

B8J B9J BAJ BBJ BCJ BDJ BEJ 21B 21H 21J 22J 23J 24J 25J 26J 27J 28J 29J

2AJ 2BJ 2CJ 2DS 2DP 2DY D4S D4P D4Y D4J D5J D6J D7J D8J D9J DAJ

DBJ DCJ DDJ DEJ 91A 91T F2G F2C F2B F2H H1K H1R H2K H2R H3K

H3R H4K H4R H5K H5R DJB DJH F3K H6A H6V H6K H8B H8H)

45R7728

220W Small desktop power supply (non-smokeless) (models CTO A2A

A2T B1S B1P B1Y B2G 41A 41T D2A D2T D3G G1A G1T A1K A1R 2DS

2DP 2DY D4S D4P D4Y 91A 91T F2G H1K H1R H2K H2R H3K H3R H4K

H4R H5K H5R)

41N3109

220W Small desktop power supply (smokeless -- Japanese) (models A2J

A3J A4J A5J A6J A7J A8J A9J AAJ ABJ ACJ ADJ B3J B4J B5J B6J B7J B8J B9J

BAJ BBJ BCJ BDJ BEJ 21J 22J 23J 24J 25J 26J 27J 28J 29J 2AJ 2BJ 2CJ D4J D5J

D6J D7J D8J D9J DAJ DBJ DCJ DDJ DEJ)

41N3119

220 Watt Power Supply - China (models CTO-A A1Q A2B A2H 51Q D1Q

D2C D2B D2H 21B 21H F2C F2B F2H)

41N3493

220 Watt Power Supply - WW (models CTO A2A A2T B1S B1P B1Y B2G

41A 41T D2A D2T D3G G1A G1T A1K A1R 2DS 2DP 2DY D4S D4P D4Y

91A 91T F2G H1K H1R H2K H2R H3K H3R H4K H4R H5K H5R)

41A9655

220 Watt Power Supply - china (models CTO-A A1Q A2B A2H 51Q D1Q

D2C D2B D2H 21B 21H F2C F2B F2H)

41A9652

The FRUs listed in the following tables are not illustrated.

410

Hardware Maintenance Manual