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Denon DR-M33HX Service Manual

Denon DR-M33HX
48 pages
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DEMON
Component
SERVICE
MANUAL
STEREO
CASSETTE
TAPE
DECK
MODEL
DR-M33HX/DR-M44HX
DR-M44HX
NIPPON
COLUMBIA
CO..
LTD.

Table of Contents

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Denon DR-M33HX Specifications

General IconGeneral
TypeCassette Deck
Track System4-track, 2-channel stereo
Tape Speed4.76 cm/s
Total Harmonic Distortion1.0%
MotorDC Motor
Tape TypeCrO2, Metal
Noise ReductionDolby B
Frequency Response20Hz to 20kHz (Metal tape)
InputLine (RCA)
OutputLine (RCA)

Summary

SPECIFICATIONS

WARNING

Leakage current

Procedure to test leakage current from exposed metal to earth ground to ensure safety compliance.

BLOCK DIAGRAM

LEVEL DIAGRAM

Mechanism Control Microcomputer

DISASSEMBLY INSTRUCTIONS

Front Panel Removal

Step-by-step guide for removing the front panel assembly and its components.

Mechanism Removal

Procedures for detaching the cassette deck mechanism from the chassis.

Front Escutchion, Meter Window, Control Button Removal

Steps to remove decorative and functional front panel parts.

Control Circuit Board Removal

Instructions for removing the control circuit board.

FL Meter Removal

Procedure for removing the FL meter and its associated board.

CTS Circuit Board Removal (DR-M44HX only)

Steps to remove the CTS circuit board on the DR-M44HX model.

Audio Circuit Board Removal

Guide for detaching the audio circuit board from the chassis.

Logic Circuit Board Removal

Procedure for removing the logic circuit board.

HX PRO Circuit Board Removal

Steps to detach the HX PRO circuit board.

Power Supply Circuit Board Removal

Guide for removing the power supply circuit board.

ADJUSTING AND CHECKING THE MECHANISM SECTION

Pinch Roller Replacement and Adjustment

Procedures for replacing pinch rollers and checking their alignment.

Pinch Roller Pressure Force Check

Method to measure and verify the correct pressure force of the pinch rollers.

Record/Playback Head Replacement and Adjustment

Detailed steps for replacing and adjusting the R/P head for optimal performance.

R/P Head Tilt Angle Adjustment

Guide for adjusting the R/P head's tilt angle to ensure proper tape contact.

ADJUSTING THE ELECTRICAL SECTIONS

PARTS LIST OF P.W. BOARD

WIRING DIAGRAM (DR-M33HX)

SCHEMATIC DIAGRAM OF HX PRO UNIT (DR-M33HX)

SCHEMATIC DIAGRAM OF AUDIO AMP UNIT (DR-M33HX)

SCHEMATIC DIAGRAM OF POWER AND LOGIC UNIT (DR-M33HX)

SCHEMATIC DIAGRAM OF FL COUNTER UNIT (DR-M33HX)

WIRING DIAGRAM (DR-M44HX)

SCHEMATIC DIAGRAM OF HX PRO UNIT (DR-M44HX)

SCHEMATIC DIAGRAM OF AUDIO AMP UNIT (DR-M44HX)

SCHEMATIC DIAGRAM OF POWER AND LOGIC UNIT (DR-M44HX)

SCHEMATIC DIAGRAM OF FL COUNTER UNIT (DR-M44HX)

SCHEMATIC DIAGRAM OF CTS UNIT (DR-M44HX)

SCHEMATIC DIAGRAM OF CAPSTAN SERVO UNIT (DR-M44HX)

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