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Service Hints & Tips

Document ID: DJON-3LXSNH

TP 770 - FRU Codes

Applicable to: World-Wide

If an error is detected by the diagnostic tests, a four-digit FRU code is displayed. The FRU code indicates two suspected FRUs. Replace the FRU that is indicated by the two leftmost digits first; then replace the FRU that is indicated by the two rightmost digits. No FRU is assigned to code 00. If only one FRU is suspected, the other FRU code is filled with zeros. See the reference page before replacing the FRU.

FRU Code

FRU

10

System board

11

CPU card

12

DC/DC card

16

Modem card

20

Memory (see Memory Checkout)

30

Reserved

32

External keyboard

33

External mouse

34

AC Adapter

35

Speaker

36

Battery in the battery bay

37

Battery in the UltraBay II

38

Fan

40

LCD unit

41

DVD Adapter Card

42

Video card

45

External CRT

50

1. Reseat the diskette drive (FDD-1).
2. Reseat the external FDD cable on the video card.
3. Diskette drive (FDD-1)

51

1. Reseat the diskette drive (FDD-2).
2. Diskette drive (FDD-2)

60

1. Reseat the hard disk drive (HDD-1).
2. Hard disk drive (HDD-1)

61

1. Reseat the hard disk drive (HDD-3).
2. Hard disk drive (HDD-3)

62

1. Reseat the hard disk drive in UltraBay II
(HDD-2).
2. Hard disk drive in UltraBay II (HDD-2)

63

1. Reseat the hard disk drive (HDD-4).
2. Hard disk drive (HDD-4)

70

PCMCIA-2 (replicator)

72

1. Reseat the PCMCIA slot assembly
2. PCMCIA slot assembly

73

Port replicator

74

Main board of the docking station

75

USB card of the docking station

90

CD-ROM drive

91

External CD-ROM drive

92

DVD drive

93

External DVD drive


Note: The device ID and error codes are used to indicate the detailed portion of the FRU that caused the error. If replacing a FRU does not correct the problem, see the device ID or error code from the previous failure. If they have changed, the cause might be because the new FRU is defective or that the FRU was incorrectly installed.

If the problem persists after replacement of the FRUs, go to Undetermined Problems.

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Hardware Maintenance Information

Date Created

15-09-97

Last Updated

19-01-99

Revision Date

19-01-2000

Brand

IBM ThinkPad

Product Family

ThinkPad 770, ThinkPad 770E/ED, ThinkPad 770X

Machine Type

9548, 9549, 9544

Model

All

TypeModel

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