Brother International MD-817 Service Manual - Page 71
Treadle
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Treadle unit Phot Int & VC chart 9.2 4000 t CP5 (VC) V SPM 2.2 1000 } 0.5 215 } -8 is -2 0 2 FRONT L H level 4.5V or more REAR L PRESSER H DOWN Trim Pres. up Neutral Pres. down 141 12 .5 1I6 STROKE (mm)-0- L level 0.5V or less Low sp Top Variable sp. sp. Adjustments Shutter 231079001 O1 Q2 O3 Shutter O1 Adjust the shutter position so that it uniformly makes contact with both Q2 and Q3 at neutral. Note: When the treadle is fully depressed, the edge A of the shutter must be within the left 1/3 of 01. Connector related 1) Connect only the power-supply connector of the external con- nectors. 2) For the internal connectors, remove only CN5 from the D printed-circuit board. 3) Making the above adjustments will set the machine speed to approximately 4000spm (105 pulley), so, in the condition after the adjustments are completed, use VR3 to set to maximum speed. - 67 -