Toshiba T4400C: Difference between revisions

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This page is a work in progress as the repair takes place.
This page is a work in progress as the repair takes place.
==Known Issues==
==Known Issues==
===Symptom or Problem Encountered===
===Power LED flashing red===
Power LED flashing red
====Causes ====
====Causes====
*Leaking and/or faulty capacitors on the internal power board
*Leaking and/or faulty capacitors on the internal power board
====Solutions====
====Solutions====
*Clean and recap the internal power board
*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==
==Disassembly Notes==
Warnings or tips to disassemble then device
* The aged plastic can be fragile and caution should be exercised when taking apart the top cover
==Original Parts==
* The ground screw on the back has a plastic cover that can be easily lost
== Original Parts==
===Internal power supply board===
===Internal power supply board===
Toshiba, N0P 0M-2, B36070451015, C0Y49S3
Toshiba, N0P 0M-2, B36070451015, C0Y49S3
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|+Capacitor [[Capacitor Specifications|Specifications]] and [[Part Footprints|Footprint]] Information
|+Capacitor [[Capacitor Specifications|Specifications]] and [[Part Footprints|Footprint]] Information
!RefDes
!RefDes
!Qty
!Qty  
!Capacitance
!Capacitance
!Voltage
!Voltage
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|4
|4
|1000 µF
|1000 µF
|6.3
|6.3  
|Through Hole Radial
|Through Hole Radial
|10mm
|10mm
|9mm
|9mm
|5mm
| 5mm
|105 °C
|105 °C
|Aluminum Electrolytic
|Aluminum Electrolytic
Line 58: Line 63:
|3
|3
|150 µF
|150 µF
|35
|35  
|Through Hole Radial
|Through Hole Radial
|10mm
|10mm
Line 76: Line 81:
|8mm
|8mm
|3mm
|3mm
|105 °C
|105 °C  
|Aluminum Electrolytic
|Aluminum Electrolytic
|ELNA
| ELNA
|
|
|-
|-
|C5, possibly C6
|C5, C6
|1
|2
|56 µF
|56 µF
|16
|16
|Through Hole Radial
|Through Hole Radial
|6mm
|6mm
|7mm
| 7mm
|3mm
|3mm
|105 °C
|105 °C
|Aluminum Electrolytic
|ELNA
|
|}
===LCD screen board===
Toshiba LTD0201 Board. Refurbished. E91964. Sllll. 344. FRE46001
[[File:T4400C LCD board.jpg|alt=A picture of the T4400SX / T4400C LCD display board|none|thumb]]
{| class="wikitable sortable"
|+Capacitor [[Capacitor Specifications|Specifications]] and [[Part Footprints|Footprint]] Information
!RefDes
!Qty
!Capacitance
!Voltage
![https://caps.wiki/wiki/Part_Footprints Mount]
!Diameter/Size
!Height
!Lead Spacing
!Temp
![https://caps.wiki/wiki/Capacitor_Types 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
|Aluminum Electrolytic
|ELNA
|
|
|B4P
|}
|}
=== Motherboard ===
To be completed
==Replacement Parts==
==Replacement Parts==
===Basic PCB Name===
===Internal power supply board===
{| class="wikitable sortable"
{| class="wikitable sortable"
|+Capacitors
|+Capacitors
!RefDes
!RefDes  
!Qty
!Qty
!Compatible Part Number
!Compatible Part Number
Line 104: Line 168:
|-
|-
|
|
|4
|RL80J102MDN1
|[https://www.digikey.com/en/products/detail/nichicon/RL80J102MDN1KX/2344937 DigiKey] [https://www.mouser.com/ProductDetail/647-RL80J102MDN1 Mouser]
|-
|
|
|
|3
|[https://www.digikey.com/ Digikey]
|35PZE150M8X9
|[https://www.digikey.com/en/products/detail/rubycon/35PZE150M8X9/5777254?s=N4IgTCBcDaIMwFYAKAtAogRgQBgLIA4ANAThAF0BfIA DigiKey] [https://www.mouser.com/ProductDetail/232-35PZE150M8X9 Mouser]
|-
|C3
|1
|EEA-FC1A820
|[https://www.mouser.com/ProductDetail/667-EEA-FC1A820 Mouser]
|-
|C5, C6
|2
|EEA-FC1C560H
|[https://www.mouser.com/ProductDetail/667-EEA-FC1C560H Mouser]
|}
===LCD screen board===
{| class="wikitable sortable"
|+Capacitors
!RefDes
!Qty
!Compatible Part Number
!Order Links
|-
|C1, C2, C6
|3
|865230542002
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/865230542002/5727890?s=N4IgTCBcDaIBwDYCsYDMAGJAWM70QF0BfIA DigiKey] [https://mou.sr/3hoSlge Mouser]
|-
|C3, C5
|2
|EMVE250ADA330MF55G
|[https://mou.sr/3zWIILY Mouser]
|-
|C4
|1
|EMVY350ADA220MF55G
|[https://mou.sr/3WJDL2Y Mouser]
|}
|}
''If parts are not available or different selection is preferred, you can use the values in the [[#Original_Parts|Original Parts]] section to perform a parametric search.''
=== Motherboard ===
===Kits===
To be completed
*Digikey BOM: https://www.digikey.com/
==Related Links ==
==Related Links==
*[http://minuszerodegrees.net/manuals/Toshiba/Other/Toshiba%20T4400SX%20-%20Maintenance%20Manual.pdf Toshiba T4400SX Maintenance Manual (also applies to the T4400C) hosted by minuszerodegrees.net]
*[http://minuszerodegrees.net/manuals/Toshiba/Other/Toshiba%20T4400SX%20-%20Maintenance%20Manual.pdf Toshiba T4400SX Maintenance Manual (also applies to the T4400C) hosted by minuszerodegrees.net]
*[http://minuszerodegrees.net/manuals/Toshiba/Other/Toshiba%20T4400SXC%20T4400C%20-%20Maintenance%20Manual%20Addendum.pdf Toshiba T4400C Maintenance Manual Addendum (Differences between the T4400SX and T4400SXC/T4400C) hosted by minuszerodegrees.net]
*[http://minuszerodegrees.net/manuals/Toshiba/Other/Toshiba%20T4400SXC%20T4400C%20-%20Maintenance%20Manual%20Addendum.pdf Toshiba T4400C Maintenance Manual Addendum (Differences between the T4400SX and T4400SXC/T4400C) hosted by minuszerodegrees.net]
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[[Category:WorkNeeded:General]]
[[Category:WorkNeeded:General]]
[[Category:WorkNeeded:OriginalParts]]
[[Category:WorkNeeded:OriginalParts]]
[[Category:WorkNeeded:ReplacementParts]]
[[Category:1990s]]

Latest revision as of 02:35, 13 February 2024

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
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.
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

Picture of Toshiba T4400C Internal power supply board
Capacitor Specifications and Footprint Information
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

A picture of the T4400SX / T4400C LCD display board
Capacitor Specifications and Footprint Information
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

Capacitors
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

Capacitors
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

References

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