Product: Service Manual. JVC model TT-81 Quarts Locked Turntable. 1976. 29 pages, including covers. Covers the turntable ONLY. Does not cover the UA-7045 tonearm or the CL-P1 Base Board. Those service manuals are available separately. Recommend to purchase the full JVC QL-8 Service Manual instead which covers all of those:
JVC QL-8 turntable system
Format: Download/PDF format.
Covers/Contents:
Specifications
Features
New Technical Information
Block Diagram
Crystal Oscillator and Frequency Dividers
Neon Lamp Circuit
Freq Gen, Output amp, Waveform & Phase Comparison
Drive Circuit
Reverse turn detection
Start/Stop Circuit
Cut-off of Hall Element Drive Circuit
Quick Stop Circuit
Dismounting
Adjustment Procedures
Power supply voltage
Lock adjustment
Quick Stop adjustment
Wow and Flutter Adjustment
Speed Adjustment
Connections, wiring
Lubrication
Waveforms
Troubleshootings
Turntable does not rotate
Turntable rotates at high speed and fails to stop
Speeds increase when rotated in the reverse direction
Neon lamp does not light
Neon lamp remains lit
Turntable rotates at an incorrect rpm
Speed select button does not function
Quick stop does not function
Exploded View and Parts List
TAS-19C Servo control and power supply P.C. Board Ass'y
Packing Materials Parts List
Accessories List
Parts List with specified number for designated areas
Schematic Diagram
Diagram of TAS-19C Printed Circuit Board Ass'y
Associated Products:
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