Power Faults
The console’s power supply is externally housed and consists of a single SMPS (Switch Mode Power Supply) providing all of the
console’s analogue and digital power rails.
Power from the external supply is wired via the twist-lock connector on the rear of the console to the 629515X1 and two
629516X1 assemblies. It is then distributed to all the other assemblies through either a dedicated power loom or as part of a data
ribbon power connection. The 629515X1 and 629516X1 assemblies use resetable fuses to protect and isolate their power rails
f
rom the main supply. The console’s 629505X1 CPU is powered directly from the SMPS and is again protected with PTC
thermistors on the CPU assembly.
The SMPS is fitted with a protection fuse, however, this is not a user serviceable part. If this fuse fails there has been a severe
power supply fault and the whole unit must be replaced.
The Matrix external power supply contains no user serviceable parts. Do not attempt any maintenance.
Appendix G - Service
118
Matrix Owner’s Manual
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