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Teac A-3340 Service Manual

Teac A-3340
102 pages
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TEAC
2:33%9
SERVICE
MANUAL

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Teac A-3340 Specifications

General IconGeneral
BrandTeac
ModelA-3340
CategoryTape Deck
LanguageEnglish

Summary

1. GENERAL DESCRIPTION

2. SERVICE DATA

MECHANICAL SPECIFICATIONS

Mechanical specifications for TEAC A-3300 and A-3340 models.

ELECTRICAL SPECIFICATIONS

ELECTRICAL A-3300 SPECIFICATIONS

Electrical specifications for the TEAC A-3300 model.

ELECTRICAL A-3340 SPECIFICATIONS

Electrical specifications for the TEAC A-3340 model.

3. EQUIPMENT REQUIRED

MECHANICAL MEASUREMENT EQUIPMENT

Tools and equipment needed for mechanical measurements.

ELECTRICAL MEASUREMENT EQUIPMENT

Tools and equipment needed for electrical measurements.

DISASSEMBLY PROCEDURES

REMOVING REAR PANEL AND WOODEN SIDES

Procedure for removing the rear panel and wooden sides.

REMOVING THE BOTTOM PLATE

Procedure for removing the bottom plate.

HEAD REPLACEMENT

HEAD ASSEMBLY REPLACEMENT

Procedure to replace the entire head assembly.

INDIVIDUAL HEAD REPLACEMENT

Procedure to replace individual tape heads.

COMPONENT REMOVAL PROCEDURES

CAPSTAN MOTOR AND ASSEMBLY REMOVAL

Steps to remove the capstan motor and assembly.

REEL MOTOR AND TENSION ARM REMOVAL

REEL MOTOR ASSEMBLY REMOVAL

Steps to remove the reel motor assembly.

TENSION ARMS REMOVAL

Removal of tension arms.

MECHANICAL HEAD ALIGNMENT

ERASE HEAD SECTION ALIGNMENT

Alignment procedure for the erase head pole.

RECORD HEAD SECTION ALIGNMENT

Alignment procedure for the record head pole.

PLAYBACK HEAD ALIGNMENT

Alignment procedure for the playback head pole.

VOLTAGE AND FREQUENCY CONVERSION

VOLTAGE CONVERSION PROCEDURE

Steps to change the operating voltage.

FREQUENCY CONVERSION PROCEDURE

Steps to change the operating frequency.

6. MEASUREMENT AND ADJUSTMENT -MECHANICAL

PINCH ROLLER PRESSURE ADJUSTMENT

TORQUE MEASUREMENT AND ADJUSTMENT PROCEDURES

A-3300-10,12 TORQUE SPECIFICATIONS

Torque specifications for A-3300-10 and A-3300-12.

A-3340/A-3300-11 TORQUE SPECIFICATIONS

Torque specifications for A-3340 and A-3300-11.

TAKE-UP TORQUE AND BACK TENSION PROCEDURES

TAKE UP TORQUE CHECK AND ADJUSTMENT

Procedure to check and adjust take-up torque.

BACK TENSION CHECK AND ADJUSTMENT

Procedure to check and adjust back tension.

MECHANICAL SPECIFICATIONS AND PERFORMANCE

REEL HEIGHT ADJUSTMENT

Procedure to adjust reel height.

FLUTTER MEASUREMENT

Flutter specifications and measurement guidelines.

TAPE SPEED MEASUREMENT

Tape speed specifications and measurement guidelines.

7. MEASUREMENT AND ADJUSTMENT -ELECTRICAL

GENERAL NOTICE FOR ELECTRICAL ADJUSTMENTS

Important notes before performing electrical adjustments.

PLAYBACK PERFORMANCE AND AZIMUTH ADJUSTMENT

PLAYBACK HEAD AZIMUTH ADJUSTMENT

Procedure for coarse and fine adjustment of playback head azimuth.

OUTPUT LEVEL AND FREQUENCY RESPONSE

SPECIFIED OUTPUT LEVEL SET

Procedure to set the specified output level.

FREQUENCY RESPONSE MEASUREMENT

Measuring and adjusting frequency response.

SIGNAL-TO-NOISE RATIO MEASUREMENT

INPUT LEVEL ADJUSTMENTS

MINIMUM INPUT LEVEL ADJUSTMENT

Procedure to adjust minimum input levels.

SPECIFIED INPUT LEVEL SET

Procedure to set specified input levels.

VU METER CALIBRATION (RECORD)

RECORDING PERFORMANCE OVERVIEW

BIAS TRAP ADJUSTMENT

Procedure to adjust the bias trap circuit.

BIAS ADJUSTMENT PROCEDURES

NORMAL POSITION BIAS ADJUSTMENT

Bias adjustment for the normal position.

HIGH POSITION BIAS ADJUSTMENT

Bias adjustment for the high position.

RECORD HEAD AZIMUTH ADJUSTMENT

COARSE ADJUSTMENT

Procedure for coarse adjustment of record head azimuth.

FINE ADJUSTMENT

Procedure for fine adjustment of record head azimuth.

RECORD LEVEL SETTING

OVERALL FREQUENCY RESPONSE

A-3340 ELECTRICAL MEASUREMENT AND ADJUSTMENT

SPECIFIED OUTPUT LEVEL FOR A-3340

Procedure to set specified output level for A-3340.

VU METER CALIBRATION (PLAYBACK) FOR A-3340

Calibrate VU meter during playback for A-3340.

A-3340 FREQUENCY RESPONSE

MONITOR PERFORMANCE CHECKS

MINIMUM INPUT LEVEL ADJUSTMENT

Procedure to adjust minimum input levels for monitor.

SPECIFIED INPUT LEVEL SET

Procedure to set specified input levels for monitor.

SIMUL SYNC FREQUENCY RESPONSE

RECORDING PERFORMANCE DETAILS

BIAS TRAP ADJUSTMENT

Procedure to adjust bias trap circuit for recording.

BIAS ADJUSTMENT

NORMAL POSITION BIAS ADJUSTMENT

Bias adjustment for normal position.

HIGH POSITION BIAS ADJUSTMENT

Bias adjustment for high position.

RECORD LEVEL SET

OVERALL FREQUENCY RESPONSE

BIAS SWITCH MODE PROCEDURES

NORMAL POSITION OPERATION

Frequency response check with bias switch in normal position.

HIGH POSITION OPERATION

Frequency response check with bias switch in high position.

PREVENTIVE MAINTENANCE PROCEDURES

CLEANING PROCEDURES

Procedure for cleaning tape path components.

DEMAGNETIZATION PROCEDURES

Procedure for demagnetizing parts and heads.

LUBRICATION AND VENTILATION GUIDELINES

LUBRICATION GUIDELINES

Lubrication points and procedure.

VENTILATION PRECAUTIONS

Ventilation and overheating precautions.

TROUBLESHOOTING GUIDE

MALFUNCTION GUIDE

Guide to common malfunctions, sources, and corrective procedures.

PACKING FOR SHIPMENT INSTRUCTIONS

OVERALL SIGNAL-TO-NOISE RATIO

ERASE EFFICIENCY MEASUREMENT

A-3300 EXPLODED VIEW AND PARTS LIST

TRIM PARTS

Exploded view and parts list for trim parts.

CONTROL PANEL PARTS

Exploded view and parts list for control panel.

REEL MOTOR ASSEMBLY PARTS

Exploded view and parts list for reel motor assembly.

CAPSTAN DRIVE ASSEMBLY PARTS

Exploded view and parts list for capstan drive assembly.

LIFTER AND PINCH ROLLER PARTS

Exploded view and parts list for lifter and pinch roller.

HEAD ASSEMBLY PARTS

Exploded view and parts list for head assembly.

HEAD CONFIGURATION DETAILS

Head configurations for A-3300/A-3340 models.

RIGHT TENSION ARM PARTS

Exploded view and parts list for right tension arm.

LEFT TENSION ARM PARTS

Exploded view and parts list for left tension arm.

MAIN CHASSIS PARTS

Exploded view and parts list for main chassis.

REAR PANEL PARTS

Exploded view and parts list for rear panel.

A-3340 PRINTED CIRCUIT BOARD AND PARTS LIST

MIC AND PLAYBACK EQ.AMPLIFIER PARTS

Parts list for MIC and Playback EQ Amplifier.

MIC AND PLAYBACK EQ.AMPLIFIER SCHEMATIC

PC board and schematic for MIC/Playback EQ Amplifier.

LINE OUT AND PHONE AMPLIFIER PARTS

Parts list for Line Out and Phone Amplifier.

LINE OUT AND PHONE AMPLIFIER SCHEMATIC

PC board and schematic for Line Out/Phone Amplifier.

METER AND REC.EG.AMPLIFIER PARTS

Parts list for Meter and Rec. EG. Amplifier.

METER AND REC.EQ.AMPLIFIER SCHEMATIC

PC board and schematic for Meter/Rec. EQ. Amplifier.

CONTROL RELAY PC BOARD

PC board layout for Control Relay.

RECTIFIER PC BOARD AND PARTS LIST

PC board layout and parts list for Rectifier.

START MOTOR PC BOARD AND PARTS LIST

PC board layout and parts list for Start Motor.

A-3340 EXPLODED VIEW AND PARTS LIST

HEAD ASSEMBLY PARTS (A-3340)

Exploded view and parts list for A-3340 head assembly.

HEAD CONFIGURATION DETAILS

Head configurations for A-3300/A-3340 models.

PREAMPLIFIER CHASSIS PARTS (A-3340)

Exploded view and parts list for A-3340 preamplifier chassis.

PREAMPLIFIER CHASSIS PARTS LIST (CONTINUED)

Continued parts list for A-3340 preamplifier chassis.

MIC AND PLAYBACK EQ. AMPLIFIER PARTS LIST

LINE OUT AND PHONE AMPLIFIER PC BOARD

METER AND REC. EG. AMPLIFIER PARTS LIST

BIAS OSCILLATOR PARTS LIST

BIAS ADJUST ASSY PARTS LIST

BIAS ADJUST ASSY B PARTS LIST

CONTROL RELAY PARTS LIST

HEADPHONE SWITCH PC BOARD AND PARTS LIST

SYMUL- SYNC PC BOARD AND PARTS LIST

TEAC MANUAL CHANGE INFORMATION

ADDITION OF DIN CONNECTOR

Details about adding a DIN connector.

REAR COVER REVISION

Details about revisions to the rear cover assembly.

RECORDING RELAY CIRCUIT CHANGE

Details about revisions to the recording relay circuit.

PILOT LIGHT CHANGE

Details about changes to the pilot light assembly.

SCHEMATIC DIAGRAMS

TAPE TRANSPORT SCHEMATIC

Schematic diagram for the tape transport.

HEAD ASSY SCHEMATIC

Schematic diagram for the head assembly.

A-3300 MODEL SCHEMATICS

Schematics for A-3300-10,12 and A-3300-11 models.

COMPARISON CHART

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