[NTLK] NewtonTalk Digest, Vol 117, Issue 19

[Martin Harding]

Thank you !  That has helped immensely.  Any difficulty getting the shroud off without damaging the board ?

Sent from my iPhone

> On 22 Sep 2023, at 5:00 am, newtontalk-request at newtontalk.net wrote:
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> Today's Topics:
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>   1. Re: eMate 300 Infrared Repair (Victor Rehorst)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Wed, 20 Sep 2023 17:20:59 -0400
> From: Victor Rehorst <victor at chuma.org>
> To: newtontalk at newtontalk.net
> Subject: Re: [NTLK] eMate 300 Infrared Repair
> Message-ID: <35c4cb33-287d-3597-6058-ef8a79281909 at chuma.org>
> Content-Type: text/plain; charset=UTF-8; format=flowed
> 
> OK, I removed the metal shroud and took some photos.
> 
> Under the shroud: 
> https://dl3.pushbulletusercontent.com/fad8OYRCdHHGzG35L3QbvOqkkzDagaiH/IMG_20230920_165840.jpg
> 
> The IC is a CS8130 IrDA/ASK transceiver with UART host interface: 
> https://www.mouser.ca/datasheet/2/76/cs8130_f1-1160092.pdf
> 
> The receiving photodiode has the letters KP stamped onto the back.? The 
> CS8130 datasheet's example schematics specify a BPV23NF photodiode as a 
> receiver, and TSHA5502 as transmitter LEDs.? The photodiode is still a 
> currently available part; the TSHA5502 has been replaced by the TSHA5500.
> 
> The passives are on the other side of the board, here's a photo of that 
> area:
> 
> https://dl3.pushbulletusercontent.com/sCToe6cpejitqZIqF7vLlFp8WKd8LchX/IMG_20230920_165737.jpg
> 
> Hope that helps!
> 
> -V
> 
>> On 2023-09-19 11:16, David Arnold via NewtonTalk wrote:
>> Martin Harding wrote on 17/9/23 20:29:
>> 
>>> I have an eMate 300 with a non-functional Infrared Unit.
>>> 
>>> Do you know if there is a description anywhere showing how to repair 
>>> an EMate infrared unit ?
>> I don't think I've ever seen details of the IR hardware for any of the 
>> MessagePads or eMate.
>> 
>> IIRC, the eMate supported both IrDA and Sharp ASK, unlike the earlier 
>> generation MessagePads.?? Does anyone have an eMate motherboard handy, 
>> and is able to check the IR transceiver markings?
>> 
> 
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> End of NewtonTalk Digest, Vol 117, Issue 19
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