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THORENS TD 125 - Service Manual

THORENS TD 125
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ServiceTD
125

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Summary

Drive Mechanism and Electronic Control System

Electronic Adjustments

Voltage Checks and Adjustments

Check and adjust output voltages for different speed settings.

Speed Adjustment and Pitch Control

Adjust speed potentiometers for correct stroboscope ring standstill.

Maintenance and Lubrication

Turntable Bearing Lubrication

Lubricate turntable bearing with special oil if necessary.

Motor Lubrication

Synchronous motor bearings require no lubrication.

Component Replacement

Stroboscope Neon Bulb Replacement

Replace neon bulb with its plastic housing.

Generator Circuit Board Replacement

Remove and replace the generator circuit board.

Main Switch Replacement and Adjustment

Replace and adjust the microswitch for proper operation.

Stroboscope Lens System Cleaning

Clean the stroboscope mirror and lens system.

Front Panel Removal and Cleaning

Remove and clean the front panel components.

TD 125 Mk II Generator Adjustment

Phase 1 Voltage Adjustment

Adjust voltage for phase 1 at specified speeds.

Phase 2 Voltage Adjustment

Adjust voltage for phase 2 at specified speeds.

Speed Adjustment

Adjust speed potentiometers to standstill stroboscope ring.

Summary

Drive Mechanism and Electronic Control System

Electronic Adjustments

Voltage Checks and Adjustments

Check and adjust output voltages for different speed settings.

Speed Adjustment and Pitch Control

Adjust speed potentiometers for correct stroboscope ring standstill.

Maintenance and Lubrication

Turntable Bearing Lubrication

Lubricate turntable bearing with special oil if necessary.

Motor Lubrication

Synchronous motor bearings require no lubrication.

Component Replacement

Stroboscope Neon Bulb Replacement

Replace neon bulb with its plastic housing.

Generator Circuit Board Replacement

Remove and replace the generator circuit board.

Main Switch Replacement and Adjustment

Replace and adjust the microswitch for proper operation.

Stroboscope Lens System Cleaning

Clean the stroboscope mirror and lens system.

Front Panel Removal and Cleaning

Remove and clean the front panel components.

TD 125 Mk II Generator Adjustment

Phase 1 Voltage Adjustment

Adjust voltage for phase 1 at specified speeds.

Phase 2 Voltage Adjustment

Adjust voltage for phase 2 at specified speeds.

Speed Adjustment

Adjust speed potentiometers to standstill stroboscope ring.

THORENS TD 125 Specifications

General IconGeneral
Drive SystemBelt drive
Motor16-pole, 2-phase synchronous motor
Speeds16, 33 1/3, 45 rpm
Drive methodBelt drive
Wow and flutter0.06% WRMS
Platter6.8 lbs (3.1 kg), non-magnetic
Tonearm CompatibilityStandard 9-inch tonearms
SuspensionSpring suspension
Speed controlElectronic
Rumble-68 dB
Platter weight6.8 lbs (3.1 kg)

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