Denon DRM 44HX Service Manual

Page 2

TABLE OF CONTENTS

MAIN FEATURES .............................. 2
SPECIFICATIONS .............................. 3
PARTS NAMES AND FUNCTIONS ................... 4~5
BLOCK DIAGRAM ............................. 6
LEVEL DIAGRAM ................................................................ 7
OUTLINE OF THE MECHANISM CONTROL M ICROCOMPUTER ................................ 8
DISASSEMBLY INSTRUCTIONS ...................................................... 9_~11
ADJUSTING AND CHECKING THE MECHANISM SECTION . 11 ~14
ADJUSTING THE ELECTRICAL SECTIONS ............................................. 14 ~ 17
PARTS LIST OF P.W. BOARD .................... .................................... 18~21
PARTS LIST OF EXPLODED VIEW (DR-M33HX) .......................................... 22
EXPLODED VIEW OF CABINET AND CHASSIS GROUP (DR»M33HXI ............................. 23
PARTS LIST OF P.W. BOARD, ACCESSORIES AND PACKING GROUP ........................... 24
PARTS LIST OF MECHANISM 83 UNIT (DR-M33HX) ....................................... 24
EXPLODED VIEW OF MECHANISM 83 UNIT lDR-M33HX) ................................... 25
WIRING DIAGRAM (DR-M33HXI ........................ 26
SCHEMATIC DIAGRAM OF HX FRO UNIT (DR-M33HXI ....... 27
P.W. BOARD OF KU-5620 HX PRO UNIT [DR-M33HX) ........ 27
SCHEMATIC DIAGRAM OF AUDIO AMP UNIT (DR-M33HX) ..... 28
P.W. BOARD OF KU-5610 AUDIO AMP UNIT ............................................. 29
SCHEMATIC DIAGRAM OF POWER AND LOGIC UNIT (DR-M33HXI ............................ 30
P.W. BOARD OF KU-5211 POWER AND LOGIC UNIT ....................................... 31
P. W. BOARD OF KU 5220 CONTROL UNIT AND KU- 5650 MECHANISM UNIT ...................... 31
SCHEMATIC DIAGRAM OF FL COUNTER UNIT (DR- M33HX) ................................. 32
P. W. BOARD OF KU- 5640 FL COUNTER UNIT ............................................ 33
EXPLODED VIEW OF CABINET AND CHASSIS GROUP (DR- M44HX) ..................... 34
PARTS LIST OF EXPLODED VIEW (DR-M44HXI .......................................... 35
PARTS LIST OF MECHANISM 53 UNIT (DR-M44HXI ....................................... 36
EXPLODED VIEW OF MECHANISM 53 UNIT [DRM44HXJ ............................ 37
WIRING DIAGRAM [DR-M44HX) ..................................................... 38
SCHEMATIC DIAGRAM OF HX PRO UNIT (DR-M44HX) ..................................... 39
P.W. BOARD OF KU-5621HX PRO UNIT . . .. ............ . ............................... __4
SCHEMATIC DIAGRM OF AUDIO AMP UNIT (DR-M44HX) ...................................

P.W. BOARD OF KU-5611 AUDIO AMP UNIT ............................................. 41
SCHEMATIC DIAGRAM OF POWER AND LOGIC UNIT (DR-M44HX) ............................ 42
P.W. BOARD OF KU-5212 POWER AND LOGIC UNIT ....................................... 43
P.W. BOARD OF KU-5221 CONTROL UNIT .............................................. 43
SCHEMATIC DIAGRAM OF FL COUNTER UNIT (DR-M44HX) ............ 44
P.W. BOARD OF KU-554I FL COUNTER UNIT ...................... 45
SCHEMATIC DIAGRAM OF CTS UNIT (DRaM44HXI . 46
P.W. BOARD OF KU-045l CTS UNIT ................................................... 47
SCHEMATIC DIAGRAM OF CAPSTAN SERVO UNIT (DR»M44HX) .............................. 48
P.W. BOARD OF KU-0445~2 CAPSTAN SERVO UNIT ....................................... 48

MAIN FEATURES

I Computer-controlled servo technology
- Direct drive closed-loop dual-capstan tape transport (DR-M44HX)
- Closed-loop dualcapstan tape transport (DR-M33HX)
- Silent, soft-touch controls provide maximum ease-of-use. L
- Computer-controlled, full-logic tape controls enable fool-proof operation.

I Three-head design utilizes DENON's new SF record/playback combination head assembly.
I Dolby HX PRO head room extension system

I Computing linear counter with memory stop.

I Auto tuning system provides automatic for level and EQ, (DR-M44HX)

l Dolby-C noise reduction systems (Double Dolby System).

Extended range, dualcolor fluorescent peak meters with auto peak hold,

Auto tape selector.

Remote control connection terminal,

High-grade 5-pole DC reel drive motor.
I Bias fine adjustment (DR-M33HX)

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