Toshiba 27AF45 TV: How to access service mode menu?

I would like to make (slight) adjustments to the horizontal width and pincushion distortion on my Toshiba TV, model 27AF45. Does anyone know if this can be done via a service mode menu? If so, how do I access the service mode.

FYI, all of my attempts to obtain a service manual for this TV from Toshiba customer service, their authorized service centers, and their authorized parts distributers resulted in them saying that no service manual was available. Surely, there must be one, no?

Thanks,

-Al
.

Relevant Pages

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    ... Service mode procedure for most Toshiba TVs ... Press sound mute - Tv displays sound mute OSD, ... It is recommended that the green convergence grid should not be adjusted ...
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  • Re: Repost, of a problem!!
    ... > Service mode procedure for most Toshiba TVs ... > Press sound mute - Tv displays sound mute OSD, ... > It is recommended that the green convergence grid should not be adjusted ...
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