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MITSUBISHI

AUDIO SYSTEMS

A

SERVICE MANUAL

STEREO CASSETTE DECK
MODEL DT- I2

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CONTENTS

SPECIFICATIONS ............................................................. 2
FRONT PANEL TERMINOLOGY AND FUNCTIONS ..................................... 3
HOW TO DISASSEMBLE THE CABINET .............................................. 4
HOW TO DISASSEMBLE THE MECHANISM ........................................... 5
HOW TO DISASSEMB LE THE SUB-CHASSIS ........................................... 6
ADJUSTMENT OF MECHANICAL SECTION ........................................... 6
ADJUSTMENT OF ELECTRICAL SECTION ........................................... 7
BLOCK DIAGRAM ............................................................ 9
INTERNAL DIAGRAMS AND PINOUT OF INTEGRATED CIRCUITS ......................... 10
WIRINGDIAGRAM..............................................; ............ 11
SCHEMATIC DIAGRAM ........................................................ 13
PRINTED CIRCUIT BOARDS .................................................... 15
EXPLODED VIEW OF CABINET .................................................. 17
EXPLODED VIEW OF MECHANISM ............................................... 18
PARTS LIST ................................................................ 19
PACKING INSTRUCTIONS ...................................................... 23

MITSUBISHI ELECTRIC SALES AMERICA, INC.

3030 East Victoria Street Rancho Dominguez, California 90221

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SPECIFICATIONS

Type ............................................. 4 track, 2 channel Stereo Cassette Deck
Motor type ......................................................... DC servo motor
Head material

REC/PB head ...................................................... Hard permalloy

Erase head .............................................................. Ferrite
Tape speed ....................... , .............................. 4.75 cm/s (1-7/8 ips)
Tape speed accuracy .......................................................... i 1%
Wow and flutter ....................................................... 0.055% Wrms
Fast forward/rewind times ............................................ 120 sec. ((3-60 type)
SN Ratio (at 5 kHz)

Dolby NR out ........................................................... 56 dB

Dolby NR in ............................................................ 66 dB
Frequency response (Record level 160 pwb/mm-30 dB)

Normal tape ..................................................... 30 - 14,000 Hz

Special tape ...................................................... 30 - 15,000 Hz

Metal tape ....................................................... 30 - 16,000 Hz
Erasure ratio (1 kHz) ......................................................... 60 dB
Input sensitivity/impedance

Mic input .................................................... 0.3 mV (1.8 k ohms)

Line input ..................................................... 70 mV (50 k ohms)
Output level

Line output ................................................ 440 mV (22 k ohms load)

Headphone .................................................. 0.4 mW (8 ohms load)
Power consumption .......................................................... 12 W
Dimensions (W x H x D) ....................... 424 x 110 x 240 mm (16-11/16 x 4-5/16 x 9-7/16")
Weight ............................................................ 3.5 kg (7.7 lbs)

Noise Reduction System manufactured under license from Dolby Laboratories Licensing Corporation.
"Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corpolation.
Specifications of this unit are subject to change without notice for improvement.