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Teac CX-400 Service Manual

Teac CX-400
25 pages
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TEAC,
SERVICE
MANUAL
Stereo
Cassette
Deck
Effective:
May,
1980
BOO062
5704005400.
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Teac CX-400 Specifications

General IconGeneral
Track System4-track, 2-channel stereo
Noise ReductionDolby B
InputLine
OutputLine
Tape TypeMetal
Frequency Response (Normal Tape)30Hz
Frequency Response (Chrome Tape)30Hz to 16kHz
Frequency Response (Metal Tape)30Hz
Input Sensitivity/Impedance50kΩ
Power Supply220V, 50Hz
TypeStereo Cassette Deck

Summary

SPECIFICATIONS AND SERVICE DATA

SPECIFICATIONS

Detailed technical specifications for the cassette deck.

SERVICE DATA

Technical data points for servicing and maintenance.

REMOVAL OF EXTERNAL COMPONENTS

PARTS LOCATION

MECHANICAL ADJUSTMENTS AND CHECKS

CAPSTAN ASSEMBLY THRUST

Adjusting the capstan shaft thrust value.

PINCH ROLLER PRESSURE

Measuring and adjusting pinch roller pressure.

REEL TORQUE

Measuring and adjusting reel torque for tape movement.

TAPE SPEED

Adjusting tape speed using a test tape.

TENSION ARM

Checking and adjusting the tension arm projection.

LUBRICATION

Lubrication points and recommended lubricants.

VOLTAGE CONVERSION

Procedure for converting voltage settings.

MUTING SWITCH

Adjusting the muting switch operation.

MOTOR SWITCH

Adjusting motor switch for stop and rotation.

PAUSE SWITCH

Adjusting pause switch position and clearance.

REWIND SWITCH

Checking rewind switch actuation.

LOCK PLATE RELEASE SOLENOID

Adjusting lock plate release solenoid position.

ELECTRICAL ADJUSTMENTS AND CHECKS

PRECAUTIONS

Important precautions before electrical adjustments.

RECORDING PERFORMANCE

Tests related to the recording performance of the deck.

SIGNAL-TO-NOISE RATIO

Measuring signal-to-noise ratio for playback and record/playback.

ERASE EFFICIENCY

Checking the efficiency of the erase head.

REC MUTE FUNCTION

Testing the record mute function.

CHANNEL SEPARATION

Measuring channel separation between tracks.

ADJACENT TRACK CROSSTALK

Checking crosstalk between adjacent tracks.

DOLBY NR EFFECT

Evaluating the effect of the Dolby NR circuit.

ADJUSTMENT AND TEST POINT LOCATIONS

Locations for adjustments and test points on PCBs.

EXPLODED VIEWS AND PARTS LIST

EXPLODED VIEW - 1

Diagram showing exploded view of components.

PARTS LIST

Detailed list of all parts and their reference numbers.

INCLUDED ACCESSORIES

List of accessories provided with the unit.

EXPLODED VIEW - 3

Diagram showing exploded view of components.

ASSEMBLING HARDWARE CODING LIST

Coding system for hardware used in assembly.

EXPLODED VIEW - 4

Diagram showing exploded view of components.

PARTS LIST (Continued)

Continuation of the detailed parts list.

PC BOARDS AND PARTS LIST

REC PLAY AMPL PCB ASSY

Foil side view, component layout, and parts list for the main audio PCB.

POWER SUPPLY PCB ASSY

Foil side view, component layout, and parts list for the power supply PCB.

METER AMPL PCB ASSY

Foil side view, component layout, and parts list for the meter amplifier PCB.

ADDITIONAL PCBS AND PARTS

Lists for LED A, LED B, and VOLUME PCBs, and related components.

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