Toshiba T4400C
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- For more information, see this article's corresponding Wikipedia page: Device.
| This device is in the WorkNeeded:OriginalParts category because it was flagged as missing information on the original parts. It may have replacement parts listed but those cannot be assumed to be identical to the originals. If you have a list of the original parts, please feel free to add them by copying the relevant table from EditorsToolbox:Tables | 
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| This device is in the WorkNeeded:General category because it was flagged as missing general information about the device. The information may be incomplete, using default text, or inaccurate and should be verified with external sources if possible. If you can add or correct information on this page, please feel free to edit it and do so. | 
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Toshiba T4400C
| Preliminary Information | |
|---|---|
| Release Year | 1990 |
| Leak Risk | Medium |
| Batteries | Yes: one main NiCd, one RTC, and one sub-battery |
| Mounting Technology | Through Hole, SMD, Sockets |
| Capacitor Types | Aluminum Electrolytic, Ceramic, Polymer |
| Destructive Entry | No |
The T4400C is a 486 laptop with 3.5" Floppy Disk Drive and a Hard Disk Drive. It has one main battery, a sub battery, and Real Time Clock battery.
This page is a work in progress as the repair takes place.
Known Issues
Power LED flashing red
Causes
- Leaking and/or faulty capacitors on the internal power board
Solutions
- Clean and recap the internal power board
LCD screen has limited or no functionality
Causes
- Leaking and/or faulty capacitors on the LCD screen board
Solutions
- Clean and recap the LCD screen board
Disassembly Notes
- The aged plastic can be fragile and caution should be exercised when taking apart the top cover
- The ground screw on the back has a plastic cover that can be easily lost
Original Parts
Internal power supply board
Toshiba, N0P 0M-2, B36070451015, C0Y49S3
| RefDes | Qty | Capacitance | Voltage | Mount | Diameter/Size | Height | Lead Spacing | Temp | Type | Brand | Series |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 | 1000 µF | 6.3 | Through Hole Radial | 10mm | 9mm | 5mm | 105 °C | Aluminum Electrolytic | ELNA | ||
| 3 | 150 µF | 35 | Through Hole Radial | 10mm | 9mm | 5mm | 105 °C | Aluminum Electrolytic | ELNA | ||
| C3 | 1 | 82 µF | 10 | Through Hole Radial | 6mm | 8mm | 3mm | 105 °C | Aluminum Electrolytic | ELNA | |
| C5, C6 | 2 | 56 µF | 16 | Through Hole Radial | 6mm | 7mm | 3mm | 105 °C | Aluminum Electrolytic | ELNA |
LCD screen board
Toshiba LTD0201 Board. Refurbished. E91964. Sllll. 344. FRE46001
| RefDes | Qty | Capacitance | Voltage | Mount | Diameter/Size | Height | Lead Spacing | Temp | Type | Brand | Series |
|---|---|---|---|---|---|---|---|---|---|---|---|
| C1, C2, C6 | 3 | 10 µF | 35 | SMD | 5mm | 5.3mm | 6mm | Aluminum Electrolytic | C2P | ||
| C3, C5 | 2 | 33 µF | 25 | SMD | 6.3mm | 5.3mm | Aluminum Electrolytic | C1P | |||
| C4 | 1 | 22 µF | 35 | SMD | 6.3mm | 5.3mm | Aluminum Electrolytic | B4P |
Motherboard
To be completed
Replacement Parts
Internal power supply board
| RefDes | Qty | Compatible Part Number | Order Links |
|---|---|---|---|
| 4 | RL80J102MDN1 | DigiKey Mouser | |
| 3 | 35PZE150M8X9 | DigiKey Mouser | |
| C3 | 1 | EEA-FC1A820 | Mouser |
| C5, C6 | 2 | EEA-FC1C560H | Mouser |
LCD screen board
| RefDes | Qty | Compatible Part Number | Order Links |
|---|---|---|---|
| C1, C2, C6 | 3 | 865230542002 | DigiKey Mouser |
| C3, C5 | 2 | EMVE250ADA330MF55G | Mouser |
| C4 | 1 | EMVY350ADA220MF55G | Mouser |
Motherboard
To be completed
Related Links
- Toshiba T4400SX Maintenance Manual (also applies to the T4400C) hosted by minuszerodegrees.net
- Toshiba T4400C Maintenance Manual Addendum (Differences between the T4400SX and T4400SXC/T4400C) hosted by minuszerodegrees.net