IBM ThinkPad X41 Tablet Hardware Maintenance Manual: Difference between revisions

Revision as of 22:31, 30 September 2026

The ThinkPad Computer Hardware Maintenance Manual of January 2006 is Lenovo's hardware maintenance manual for the ThinkPad X41 Tablet, part number 39T9290, First Edition (January 2006). The PDF has 140 pages: four front pages, 135 numbered pages and the back cover, which carries the part number.

The title page lists the products supported: ThinkPad X41 Tablet (machine types 1866, 1867 and 1869) and ThinkPad X4 Dock (machine type 2506). The edition notice reads "© Copyright Lenovo 2006. Portions © Copyright International Business Machines Corporation 2006".

The parts list also gives FRUs for machine type 1868, which the title page does not name.

About this manual (p. 1).
Introduction (pp. 3-26): strategy for replacing FRUs and hard disk drives, an important notice on handling the system board (its BGA chipsets crack if the board is dropped or bent), how to use error messages (pp. 3-4); strategy for replacing FRUs on configure-to-order (CTO), custom model variant (CMV) and general announce variant (GAV) machines (pp. 4-7); replacing RoHS-compliant FRUs (p. 7); diskette compatibility matrix (p. 8); safety notices in English, French, German, Hebrew, Italian and Spanish (pp. 8-19); general and electrical safety, safety inspection guide, handling of electrostatic discharge-sensitive devices, grounding requirements (pp. 20-25); laser compliance statement (p. 26).
General descriptions (pp. 29-43): what to do first (p. 29); service web site and restoring the pre-installed system (p. 31); passwords (p. 32); power management (p. 34); checkout guide, testing the computer and PC-Doctor (pp. 37-40); power system checkout (pp. 40-43).
ThinkPad X41 Tablet (from p. 45): specifications (p. 47), status indicators (p. 49), FRU tests including the digitizer firmware and sampling tests (p. 51), Fn key combinations (p. 53); symptom-to-FRU index with numeric error codes, error messages, beep and no-beep symptoms, LCD-related, intermittent and undetermined problems (pp. 55-67); FRU replacement notices, covering screw notices and retaining serial numbers (pp. 68-69).
Removing and replacing a FRU (pp. 72-112): numbered procedures 1010 Battery pack to 1160 Fansink and 2010 LCD bezel to 2060 Digitizer assembly. The backup battery is 1110 (p. 90), reached after removing the battery pack and keyboard. The digitizer assembly (2060, p. 111) is the last step in the LCD sequence and is taped to the back of the LCD module.
Locations (pp. 113-117): front, rear and bottom views of the X41 Tablet, and front and rear views of the X4 Dock.
Parts list (pp. 118-132): overall FRU list (p. 118), LCD FRUs (p. 125), keyboards (p. 127), recovery CDs (p. 128), miscellaneous parts and AC adapters (p. 129), common parts list (p. 130).
Notices (p. 133) and trademarks (p. 135).

What this manual does not contain

The manual works at FRU level. There are no schematics, no board layouts and no component values. The only capacitor mentioned is the "bulging capacitor" hazard in the safety inspection guide (p. 23). It has no model matrix; FRUs for a particular machine are identified through the CTO, CMV and GAV procedure (pp. 4-7).

What it settles

The power system checkout (pp. 40-43) gives these limits:

**Power system checkout, ThinkPad X41 Tablet (pp. 41-43)**
Item	Measured at	Correct reading
AC adapter	Pin 1 to pin 2 (ground) of the adapter plug	+15.5 to +17.0 V dc
Battery pack	Terminal 1 (+) to terminal 5 (−)	+0 to +16.8 V dc; discharged if below +14.4 V
Battery pack, above +14.4 V	Resistance between terminals 4 and 5	4 to 30 kΩ
Backup battery	Red wire (+) to black wire	+2.5 to +3.2 V dc

The specifications (pp. 47-48) list Pentium M 753 (1.2 GHz), 758 (1.5 GHz) and 778 (1.6 GHz) processors, 256 MB or 512 MB on board with one DDR2-533 SO-DIMM slot, Intel 915GM graphics, a 12.1-inch XGA wide-viewing-angle panel, and a 1.8-inch IDE hard disk of 20 to 60 GB.

The screw notices (p. 68) specify nylon-coated screws, used only once; the screw pack is P/N 26R9169 (p. 129). The pen (P/N 39T7303, p. 124) and the digitizer assembly (P/N 39T0805, p. 126) are separate FRUs. After a system board replacement the serial number must be written back with the ThinkPad Hardware Maintenance Diskette version 1.71 or later (p. 69).

Download: IBM ThinkPad X41 Tablet Hardware Maintenance Manual.pdf

Related pages

IBM ThinkPad X40 Hardware Maintenance Manual, the clamshell X40 series
IBM ThinkPad T43 T43p Hardware Maintenance Manual, a manual for another ThinkPad of the same period
IBM ThinkPad Notebooks - Personal Systems Reference and IBM ThinkPad Notebooks (A/G/R/T/X) - Personal Systems Reference, for identifying a machine from its type-model number

@@ Line 1: / Line 1: @@
-'''The file uploaded under this name is truncated and will not open.'''
+The '''ThinkPad Computer Hardware Maintenance Manual''' of January 2006 is Lenovo's hardware maintenance manual for the ThinkPad X41 Tablet, part number 39T9290, First Edition (January 2006). The PDF has 140 pages: four front pages, 135 numbered pages and the back cover, which carries the part number.
-The upload is '''1,921,024 bytes'''. The PDF's own linearisation dictionary, in the first line of the file, declares a total length of '''7,686,266 bytes''' and '''140 pages''' &mdash; so roughly a quarter of the document was transferred and the rest is missing. There is no `%%EOF` marker, no `startxref`, the final object stream is cut off part-way through, and the top-level page tree object was in the part that never arrived.
+The title page lists the products supported: ThinkPad X41 Tablet (machine types 1866, 1867 and 1869) and ThinkPad X4 Dock (machine type 2506). The edition notice reads "© Copyright Lenovo 2006. Portions © Copyright International Business Machines Corporation 2006".
-Every reader fails on it in the same way, and not because of a viewer problem:
+The parts list also gives FRUs for machine type 1868, which the title page does not name.
-* `pdfinfo` &mdash; "Syntax Error: Invalid XRef entry ... Top-level pages object is wrong type (null)", and it cannot report a page count.
+== Contents ==
-* `qpdf --check` &mdash; "file is damaged ... can't find startxref"; its cross-reference reconstruction runs but cannot recover the page tree, and rewriting the file fails.
-* `pdftotext` and `pdftoppm` &mdash; no pages to extract or render.
-Recovery was attempted with qpdf's cross-reference reconstruction and QDF rewrite. '''It is not recoverable''': the object the whole document hangs from is in the missing three quarters.
+Page numbers are the manual's own.
-== What it contains ==
+* About this manual (p. 1).
+* Introduction (pp. 3-26): strategy for replacing FRUs and hard disk drives, an important notice on handling the system board (its BGA chipsets crack if the board is dropped or bent), how to use error messages (pp. 3-4); strategy for replacing FRUs on configure-to-order (CTO), custom model variant (CMV) and general announce variant (GAV) machines (pp. 4-7); replacing RoHS-compliant FRUs (p. 7); diskette compatibility matrix (p. 8); safety notices in English, French, German, Hebrew, Italian and Spanish (pp. 8-19); general and electrical safety, safety inspection guide, handling of electrostatic discharge-sensitive devices, grounding requirements (pp. 20-25); laser compliance statement (p. 26).
+* General descriptions (pp. 29-43): what to do first (p. 29); service web site and restoring the pre-installed system (p. 31); passwords (p. 32); power management (p. 34); checkout guide, testing the computer and PC-Doctor (pp. 37-40); power system checkout (pp. 40-43).
+* ThinkPad X41 Tablet (from p. 45): specifications (p. 47), status indicators (p. 49), FRU tests including the digitizer firmware and sampling tests (p. 51), Fn key combinations (p. 53); symptom-to-FRU index with numeric error codes, error messages, beep and no-beep symptoms, LCD-related, intermittent and undetermined problems (pp. 55-67); FRU replacement notices, covering screw notices and retaining serial numbers (pp. 68-69).
+* Removing and replacing a FRU (pp. 72-112): numbered procedures 1010 Battery pack to 1160 Fansink and 2010 LCD bezel to 2060 Digitizer assembly. The backup battery is 1110 (p. 90), reached after removing the battery pack and keyboard. The digitizer assembly (2060, p. 111) is the last step in the LCD sequence and is taped to the back of the LCD module.
+* Locations (pp. 113-117): front, rear and bottom views of the X41 Tablet, and front and rear views of the X4 Dock.
+* Parts list (pp. 118-132): overall FRU list (p. 118), LCD FRUs (p. 125), keyboards (p. 127), recovery CDs (p. 128), miscellaneous parts and AC adapters (p. 129), common parts list (p. 130).
+* Notices (p. 133) and trademarks (p. 135).
-Nothing can be read from this file, so nothing here is a description of its contents &mdash; only of what the document is.
+== What this manual does not contain ==
-The '''ThinkPad X41 Tablet''' is the convertible-tablet member of the X40 series, sold from 2005. Its hardware maintenance manual is a Lenovo-era publication in the same series as the other late X-series manuals hosted here, which are structured as: about this manual and FRU replacement strategy; safety information; general descriptions and related service information; the checkout guide with the power system checkout; product overview and specifications; the symptom-to-FRU index; FRU replacement notices; the numbered removal and replacement sequence; locations; and the FRU parts list.
+The manual works at FRU level. There are no schematics, no board layouts and no component values. The only capacitor mentioned is the "bulging capacitor" hazard in the safety inspection guide (p. 23). It has no model matrix; FRUs for a particular machine are identified through the CTO, CMV and GAV procedure (pp. 4-7).
-== What it does not contain ==
+== What it settles ==
-'''The manual is, in effect, not available on this wiki.''' The page and the download link are left in place deliberately rather than removed, so that the gap is visible and someone who has a good copy can replace it.
+The power system checkout (pp. 40-43) gives these limits:
-A search of archive.org by title, by machine name and by likely part number found no copy of the ThinkPad X41 Tablet hardware maintenance manual. A ''user'' manual for the X41 Tablet exists on archive.org (as a third-party manuals-site scrape) but that is a different document and carries no service content.
+<templatestyles src="Template:StyledTable/styles.css" />
+{| class="wikitable styled-table" style="width:80%; text-align:center;"
+|+'''Power system checkout, ThinkPad X41 Tablet (pp. 41-43)'''
+! Item !! Measured at !! Correct reading
+|-
+| AC adapter || Pin 1 to pin 2 (ground) of the adapter plug || +15.5 to +17.0 V dc
+|-
+| Battery pack || Terminal 1 (+) to terminal 5 (−) || +0 to +16.8 V dc; discharged if below +14.4 V
+|-
+| Battery pack, above +14.4 V || Resistance between terminals 4 and 5 || 4 to 30 kΩ
+|-
+| Backup battery || Red wire (+) to black wire || +2.5 to +3.2 V dc
+|}
-== What it settles ==
+The specifications (pp. 47-48) list Pentium M 753 (1.2 GHz), 758 (1.5 GHz) and 778 (1.6 GHz) processors, 256 MB or 512 MB on board with one DDR2-533 SO-DIMM slot, Intel 915GM graphics, a 12.1-inch XGA wide-viewing-angle panel, and a 1.8-inch IDE hard disk of 20 to 60 GB.
-'''Do not cite this page as a source for anything.''' Nothing in the file can be read. If you need X41 Tablet service information, the nearest hosted documents are [[IBM ThinkPad X40 Hardware Maintenance Manual]] (September 2005, part number 39T5972), which covers the non-tablet X40 series and shares much of the platform, and [[IBM ThinkPad T43 T43p Hardware Maintenance Manual]] (July 2005), which is the contemporaneous manual in the same series &mdash; but neither covers the tablet digitiser, the hinge or the tablet-specific FRUs.
+The screw notices (p. 68) specify nylon-coated screws, used only once; the screw pack is P/N 26R9169 (p. 129). The pen (P/N 39T7303, p. 124) and the digitizer assembly (P/N 39T0805, p. 126) are separate FRUs. After a system board replacement the serial number must be written back with the ThinkPad Hardware Maintenance Diskette version 1.71 or later (p. 69).
 <pdf> File:IBM ThinkPad X41 Tablet Hardware Maintenance Manual.pdf </pdf>
-Download it here: [[:File:IBM ThinkPad X41 Tablet Hardware Maintenance Manual.pdf|IBM ThinkPad X41 Tablet Hardware Maintenance Manual.pdf]]
+Download: [[:File:IBM ThinkPad X41 Tablet Hardware Maintenance Manual.pdf|IBM ThinkPad X41 Tablet Hardware Maintenance Manual.pdf]]
 == Related pages ==
-* [[IBM ThinkPad X40 Hardware Maintenance Manual]] &middot; [[IBM ThinkPad X30 X31 X32 Hardware Maintenance Manual]] &middot; [[IBM ThinkPad T43 T43p Hardware Maintenance Manual]]
+* [[IBM ThinkPad X40 Hardware Maintenance Manual]], the clamshell X40 series
-* [[IBM ThinkPad Notebooks - Personal Systems Reference]] &middot; [[IBM ThinkPad Notebooks (A/G/R/T/X) - Personal Systems Reference]] &mdash; for identifying a machine from its type-model number
+* [[IBM ThinkPad T43 T43p Hardware Maintenance Manual]], a manual for another ThinkPad of the same period
+* [[IBM ThinkPad Notebooks - Personal Systems Reference]] and [[IBM ThinkPad Notebooks (A/G/R/T/X) - Personal Systems Reference]], for identifying a machine from its type-model number
 [[Category:IBM Service Manuals]]
 [[Category:Service Manuals]]

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Revision as of 22:31, 30 September 2026

Contents

What this manual does not contain

What it settles

Related pages