Fisher MT 6250 Service Manual
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Extracted text from Fisher MT 6250 Service Manual (Ocr-read)
Page 1
29W
SERVICE MANUAL
% FISHER
MT-6250
Linear Motor
Quartz Locked PLL
Direct Drive Turntable
(EUROPE)
Thefirst name in high fidelity
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Page 2
TABLE OF CONTENTS
Specifications .......................................................... 3
lntroduction ........................................................... 4
Drive System ......................................................... 5
Drive System (Continued) .................................................. 6
Drive Signal Generation 8: Turn On ............................................ 7
Quartz»Lock System/Speed Detection and Servo Control/
Motor Speed Control and Phase Comparator ...................................... 8
Electromagnetic Braking System/Stroboscope/Power Supply ........................... 9
Block Diagram-Quartz Lock Reference Signal and Strobe Circuits ....................... 10
Electrical Adjustments and Procedure ......................................... 1 1
Electrical Adjustments (Continuedl/Mechanical Adjustments/
Mounting The Cartridge .................................................. 12
Motor P.C.Board/Power Supply P.C.Board ...................................... 13
Parts List (Motor PiC.B. Assy 84 Power Supply P.C. Assyl ............................ 14
Exploded View of Turntable (1) ............................................. 15
Exploded View of Turntable (2) ............................................. 16
Parts List-(Packing, Accessories, Cabinet, Turntable) ............................... 17
Parts List-(Continued) ................................................... 18
Parts List-(Continued) ................................................... 19
Point to Point Wiring Diagram .............................................. 2!)
Schematic Diagram ................................................... 21,22
Semiconductor Lead Identification ........................................... 23