1 Mk8 MM Overview, Specifications and Wiring
Mk8 MM Manual Page | 19
1.2.3 Fuse Ratings
Fuse 1 protects the mains input to the MM, including the mains output terminals 50 – 64.
Fuse 2 protects the power supply (terminal 69) for the servomotors, alarm and 2 port valve. If this fuse blows,
error ‘Triac Power Supply Error (Check F2)’ will occur.
Fuse 3 protects the 13.5V power supply to the oil pressure sensor and IR scanner on terminal 49. If this fuse
blows, error ‘Fused 13.5V Supply Error (Check F3)’ will occur.
Fuse 4 protects the 12V power supply to the gas/air pressure sensor and steam pressure detector on
terminals 34 and 39. If this fuse blows, error ‘Fused 12V Supply Error (Check F4)’ will occur.
Fuse 5 protects the power supply (terminal PF) for the expansion servos and alarm outputs. If fuse 5 blows,
error ‘Expansion PF Output (Check F5)’ will occur.
Fuse 6 protects the DC circuits. If this fuse blows, the display will be off and both LEDs adjacent to fuse 7
and 8 will be off.
Fuse 7 protects the internal 5V supply. If this fuse blows the display will be off and the LED adjacent to the
fuse will be off.
Fuse 8 protects the internal 12V supply. If this fuse blows the display will be off and the LED adjacent to the
fuse will be off.
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