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Aiwa AD-6900E User Manual

Aiwa AD-6900E
24 pages
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Aiwa AD-6900E Specifications

General IconGeneral
TypeCassette Deck
Track System4-track, 2-channel stereo
Tape Speed4.76 cm/s
Total Harmonic Distortion0.8%
Channels2
Number of Heads3
Heads3
MotorDC motor
Tape TypeCrO2, Metal
OutputLine Out
InputsLine In, Mic In
OutputsLine Out
Frequency Response20Hz - 18kHz (Metal Tape)

Summary

Specifications

General Specifications

Covers dimensions, weight, tape system, speed, and stop functions.

Performance Specifications

Includes frequency response, output levels, noise, and separation.

Mechanical Specifications

Details motors, heads, and torque values.

Input/Output Specifications

Covers MIC, LINE IN, DIN, PHONES, and LINE OUT levels.

Power and Consumption Details

Specifies power source and consumption.

Dolby System Information

Licensing and trademark details for Dolby NR.

Disassembly Instructions

Top Panel and Front Panel Removal

Steps to remove the top and front panels.

Cassette Mechanism Disassembly

Procedures for removing cassette lid, blinder, and plate.

REC/PB Circuit Board Removal

Instructions for removing the Record/Playback circuit board.

Disassembly Instructions

Logic and FRTS Circuit Board Removal

Steps to remove System Logic, Key Logic, and FRTS boards.

Front Panel B and Switch Board Removal

Steps to remove front panel B and switch boards.

Mechanism Component Removal

Steps to detach the main mechanical assembly.

Exploded View-1

Internal Component Identification

Visual guide to identify internal parts.

Mechanical Parts List

Front Panel and Cassette Parts

Lists parts for the front panel and cassette lid/plate.

Chassis, Cabinet, and Hardware

Lists chassis, cabinet, screws, and nuts.

Knobs and Labels

Lists various control knobs and labels.

Exploded View-2

Circuit Board Assembly Identification

Visual identification of various circuit boards.

Mechanical Parts List

Control and Selector Components

Lists volume controls, selector parts, and switches.

Panel, Cord, and Holder Components

Lists panels, cords, and circuit board holders.

Exploded View-3

Mechanism Component Identification

Visual identification of mechanism parts.

Mechanical Parts List

Eject, Cassette Box, and Head Components

Lists parts for eject, cassette box, and heads.

Actuating, Play Idler, and Brake Components

Lists parts for actuating, play idlers, and brake mechanisms.

Motor and Flywheel Components

Lists motor, flywheel, and related parts.

Exploded View-4

Motor and Plunger Component Identification

Visual identification of motors and plungers.

Electrical Parts List

REC/PB, Peak Meter, and Volume Control Components

Lists components for REC/PB, Peak Meter, and Volume Control boards.

Logic, Control, and Interface Board Components

Lists components for various logic, control, and interface boards.

Miscellaneous Electrical Components

Lists various other electrical parts.

Level Diagrams

Playback Level Characteristics

Shows audio levels for playback modes.

Record Level Characteristics

Shows audio levels for recording modes.

Mechanical Parts List

Cassette Pressure and Blocking Components

Lists parts for cassette pressure and rec-blocking.

Plunger, Lever, and Play Mechanism Parts

Lists plunger, lever, and play idler components.

Motor Pulley, Flywheel, and Brake Parts

Lists motor pulleys, flywheel, and brake parts.

Accessories and Package Contents

Screws, Connectors, and Cords

Lists various screws, connectors, and cords.

Printed Materials and Packing Items

Lists manuals, guarantee cards, and packing materials.

Schematic Diagrams

Wiring-1 and REC/PB Circuit Board Schematic

Wiring and schematic for REC/PB board.

Key Logic and System Logic Circuit Board Schematics

Schematics for Key Logic and System Logic boards.

Schematic Diagrams

Switch, Remote Control Jack, and Player Sync Schematics

Schematics for control and interface boards.

CL, FRTS, and Key Logic Circuit Board Schematics

Schematics for functional circuit boards.

Wiring Diagrams

Wiring Diagram Sections A and B

Interconnections for Player Sync, System Logic, REC/PB, Key Logic, and FRTS.

Adjustment Procedures

Bias Trap and Playback Level Adjustments

Procedures for bias trap and playback level settings.

Playback Frequency and Dolby Trap Adjustments

Procedures for frequency response and Dolby trap adjustments.

Bias Current Adjustments

Procedures for LH and CrO₂ bias current adjustments.

Schematic Diagrams

REC/PB, System Logic, and Key Logic Wiring

Wiring details for control and logic boards.

Remote Control Jack and Switch Board Wiring

Wiring for remote control and switch boards.

Schematic Diagrams

Motor and Logic Board Wiring

Wiring for main motor and logic boards.

Plunger Logic and REC/PB Board Wiring

Wiring for plunger logic and REC/PB board.

Wiring Diagrams

Peak Meter, FRTS, Dolby-NR, and Sub Motor Wiring

Wiring for various signal processing and motor control boards.

System Logic Board Wiring

Wiring connections for the System Logic board.

Adjustment Procedures

Peak and VU Meter Adjustments

Procedures for adjusting peak meter, offset, and VU meter.

Balance and Oscillation Adjustments

Procedures for FRTS, 400Hz Osc, 8kHz Osc, and 400Hz/8kHz Balance.

Mechanical Parts List

Cassette Mechanism and Blocking Components

Lists parts for cassette pressure and rec-blocking.

Plunger, Lever, and Play Mechanism Parts

Lists plunger, lever, and play idler components.

Motor Pulley, Flywheel, and Brake Parts

Lists motor pulleys, flywheel, and brake parts.

Accessories and Package Contents

Screws, Connectors, and Cords List

Detailed list of various screws, connectors, and cords.

Printed Materials and Packing Items List

Lists manuals, guarantee cards, and packing materials.

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