EEVblog #710 - Intercom System Repair

Join Dave step-by-step as he attempts to find the problem with a non-booting Aiphone GF NS building intercom system. Will a reset chip make a monkey out of him?
And as always, a trap for young players is explained.

Brochure:
http://www.zsing.com/download/aiphone/gf-k.pdf
Install Manual:
http://www.aiphone.net.au/media/GFNS_Install.pdf
Setup Manual: http://www.aiphone.com/home/assets/Uploads/downloads/documents/products/instructions/GF-NS%20Progr%20Instr.pdf

Datasheets:
Mitsubishi M16C: http://pdf.datasheetcatalog.com/datasheet/MitsubishiElectricCorporation/mXuuxwr.pdf
24LC128 EEPROM: http://ww1.microchip.com/downloads/en/DeviceDoc/21191s.pdf
RS232 driver: http://www.ti.com/lit/ds/symlink/ds14c232.pdf

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