Toshiba T4900CT
The Toshiba T4900CT is a Pentium-based laptop that was announced around October 1994, and stated to ship in late November of the same year. I believe that this was Toshiba's first Pentium laptop. It cost $7,499 on launch, and was one of the first laptops, if not the first to ship with a low-voltage 3.3V Pentium chip, designed for use in low-power devices, such as laptops.
Specifications
| Spec | Details |
|---|---|
| CPU | CPU Type: Soldered TCP Intel Pentium @75MHz |
| Chipset | Unknown |
| RAM | Type: Unknown Standard: 8MB Maximum: 40MB |
| Hard Disk | 2.5" IDE Uses proprietary adapter?: Unknown Standard: 772MB |
| Display Options | 10.4" Active Matrix Color @640x480 |
| Graphics Chipset | Chips & Technologies 65545 VRAM: 1MB |
| Audio | Analog Devices AD1848KP and Yamaha OPL3 |
| Main Battery | NiMH (2600mAH, 12V) |
| CMOS Battery | - Lithium CMOS Battery - NiMH Reserve Battery |
| Power Supply | Barrel Jack (18V, Center Positive) |
| Disk Drives | 3.5" 1.44MB Floppy Drive |
| PC Cards | 2x PCMCIA Slots |
| Networking | None |
| Other I/O | - 1x Parallel - 1x Serial - 1x VGA Out - 2x PS/2 - 1x Dock Connector - 1x Mic In - 1x Line Out |
| BIOS | Toshiba |
| Pointing Device | TrackPoint |
Resources
 Service Manual |
Specsheet |
|---|
Common Faults & Maintenance
CMOS/Hibernation Battery Leaks
The T4900CT has an internal NiMH hibernation battery. These batteries are highly prone to leaking, and should be removed on any T4900CT.
Capacitor Failure
While not nearly as bad as older models in the T4000 series, the T4900CT should be recapped. There are several surface mount electrolytics inside these, along with one ELNA brand radial cap that's on the sound card PCB that must be replaced.
Gallery
Photos from Clous. Used with permission.
Page last updated (MM/DD/YYYY): 12/06/2024
Update Reason: images added
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