ThinkPad Laptops

ThinkPad 240

Machine Type 2609 · 1999 · 2 sections

A 1999 ultraportable subnotebook weighing just under 3 lb (about 1.3 kg). Despite the footprint it shipped with a near full-size ThinkPad keyboard and the red TrackPoint.

Related Documents

Service Reference

Product Overview #

3 variants of this machine type, side by side. A cell spanning several columns is shared by those models, so the narrow cells are the differences — memory type, battery chemistry and panel are what usually change across a range.

Spec ThinkPad 240 ThinkPad 240X ThinkPad 240Z
Released June 1999 June 2000 2000?
Processor Intel Mobile Celeron @300, 366, or 400MHz Intel Mobile Celeron @450MHz
Intel Mobile Pentium III @500MHz		 Intel Mobile Celeron @500MHz
Intel Mobile Pentium III @600MHz
Memory Type: PC100 SDRAM, 1 slot
Standard: 64MB
Maximum: 192MB		 Type: PC100 SDRAM, 1 slot
Standard: 64 or 128MB
Storage 2.5" IDE
Standard: 6.4 or 12GB		 2.5" IDE
Standard: 6 or 12GB		 2.5" IDE
Standard: 10 or 20GB
Display 10.4" Active Matrix LCD @800x600 10.4" Active Matrix LCD @800x600
10.4" Active Matrix LCD @1024x768
Graphics NeoMagic MagicGraph 128XD (NM2160)
VRAM: 2MB		 Silicon Motion LynxEM+ (SM712)
VRAM: 2MB		 Silicon Motion LynxEM+ (SM712)
Silicon Motion LynxEM4+ (SM712)
VRAM: 2 or 4MB
Audio ESS Solo-1E (ES1946) Crystal CS4281 Crystal CS4297A
Main battery Lithium Ion (3 cell) Lithium Ion (3 or 6 cell) —
CMOS battery Soldered Lithium Cell
Power supply Barrel Jack
Media drives None, external only
PC Cards 1x PCMCIA/CardBus Slot —
Networking Modem Modem or Ethernet
Ports 1x Parallel
1x Serial
1x VGA Out
1x USB 1.x
1x Mic In
1x Headphone Out		 —
BIOS IBM BIOS
Pointing device TrackPoint
IBM model codes — 83 models of machine type 2609
VariantModel codes
ThinkPad 2402609-15J, 2609-21A, 2609-21C, 2609-21F, 2609-21G, 2609-21H, 2609-21J, 2609-21K, 2609-21M, 2609-21T, 2609-21U, 2609-25J, 2609-31F, 2609-31H, 2609-31J, 2609-31K, 2609-31T, 2609-31U, 2609-35J, 2609-41A, 2609-41C, 2609-41F, 2609-41G, 2609-41H, 2609-41J, 2609-41K, 2609-41M, 2609-41P, 2609-41S, 2609-41T, 2609-41U, 2609-41X
ThinkPad 240X2609-51A, 2609-51C, 2609-51F, 2609-51H, 2609-51J, 2609-51K, 2609-51M, 2609-51P, 2609-51S, 2609-51T, 2609-51U, 2609-51X, 2609-52A, 2609-52C, 2609-52F, 2609-52H, 2609-52J, 2609-52K, 2609-52M, 2609-52P, 2609-52S, 2609-52T, 2609-52U, 2609-52X, 2609-53J, 2609-61A, 2609-61C, 2609-61F, 2609-61G, 2609-61H, 2609-61J, 2609-61K, 2609-61M, 2609-61P, 2609-61S, 2609-61T, 2609-61U, 2609-61X, 2609-62A, 2609-62C, 2609-62F, 2609-62G, 2609-62H, 2609-62J, 2609-62K, 2609-62M, 2609-62P, 2609-62S, 2609-62T, 2609-62U, 2609-62X

Checking the Battery Asm #

Note: Signal lines, not used in these steps, are used for communications between the system and the battery.

Checking the Battery Asm

Do the following:

  1. Power off the computer

  2. Remove the battery Asm and measure the voltage between battery terminals 1 (+) and 5 (-).

    See the following figure:

    2609_3

    Note: Signal lines, not used in these steps, are used for communications between the system and the battery.

    • If the voltage is less than 10.6V, the battery Asm has been discharged, recharge the battery Asm.

    If the voltage is still less than 10.6V, replace the battery.