Toshiba T4400C
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- For more information, see this article's corresponding Wikipedia page: Device.
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 | DigiKey Mouser |
| C5, C6 | 2 | EEA-FC1C560H | DigiKey Mouser |
LCD screen board
| RefDes | Qty | Compatible Part Number | Order Links |
|---|---|---|---|
| C1, C2, C6 | 3 | 865230542002 | DigiKey Mouser |
| C3, C5 | 2 | EMVE250ADA330MF55G | DigiKey Mouser |
| C4 | 1 | EMVY350ADA220MF55G | DigiKey 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