Hitachi HRDMD 38 Service Manual

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(§) HITACHI

SERVICE MANUAL

HRD-MD38/
HRD-MD53

TY No. 575 EF

HRD-MD53E us, cs

H RD-MD38 [ 325,3; 3;, VS! 28. AU,

HT'MD28 [ BS, KS, ES, VS, 28, AU.

US, CS, W (UN), EW

I
J
J

HRD-MD38
for W (UN)

CONTENTS TABLE DES MATIERES

KEY TO ILLUSTRATIONS .............. 2 LEGENDES DES ILLUSTRATIONS ........ 2
SPECIFICATIONS ....................... 5 FICHE TECHNIQUE ..................... 5
DISASSEMBLY ......................... 8 DEMONTAGE .......................... 8
ADJUSTMENT ........................ 1O REGLAGE ............................ 10
INSPECTION OF MECHANISM .......... 15 INSPECTION DU MECANISME .......... 15
LU BRICATION ........................ 16 LUBRIFICATION ....................... 16
CIRCUIT DIAGRAM ................... 17 DIAGRAMME DES CIRCUITS ........... 17
PRINTED WIRING BOARD ............. 20 PLAN DE BASE ...................... 20
BLOCK DIAGRAM ..................... 23 DIAGRAMME SYNOPTIQUE ............ 23
EXPLODED VIEW ..................... 24 VUE ECLATEE ........................ 24
REPLACEMENT PARTS LIST ........... 29 LISTE DES PIECES DE RECHANGE ..... 29

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

STEREO TUNER-AMPLIFIER DOUBLE CASSETTE RECORDER

September 1987 TOYOKAWA WORKS

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HRD-MDflS/HRD-MDSB
HT-MDZB

HRD-MDSB/
HRD-MD53

HRD-MD38
for W (UN)

For W. Germany
Pour lAllemagne de louest

KEY TO ILLUSTRATIONS o LEGENDES DES ILLUSTRATIONS

HRD-MD38/
HRD-MDSS

® Operate button (POWER)

C2) Graphic equalizer controls

© Balance control

® Remote sensor window /
indicator

@ Shift button / indicator

© Memory write button

(D Station buttons

Tuning buttons

(9 FM mode select button

® Band select button

® FM mode AUTO" indicator

® Volume control

63 Function select buttons /
indicators

® Tape counter /
Reset button (TAPEAZ)

(13) Dolby NR switch

® Level indicator
® Power indicator
® Recording level control
619 Tape select button (TAPE-2)
@ Tape select button (TAPE-1)
Q) Pause button (ll)
@ Stop / Eject button (DA)
{33 Fast forward button (»)
@ Rewind button (44)
Q5 Playback button (l>)
Q3) Recording button (O)
® Tape dubbing speed
select switch
@ Cassette holders
3 Headphonesjack
® Frequency display
63 FM antenna jack (75 ohms)

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(33) FM antenna (aerial) terminals
(75 ohms) (except W Germany)

8 AM loop antenna terminals

® AM external antenna terminal

® AM loop antenna holder

® CD connecting socket
(For DA-3B)

@ CD input jacks

® AUX input jacks

39 PHONO input jacks

® PHONO connecting socket
(For HT-MDZB)

® RIF selector (For Europe
except W Germany)

@ Power supply cord

® Ground terminal

® Speaker terminals

® AC outlet (Ior HRD-MDE3)

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SYMBOL PM DESCRIPTION SYMBOL PART DESCRIPTION SYMW- PART DESCRIPTION
No. No. No. No. No. No.
48 4819035 Record safety lever 74 4819053 REC sensor spring 91 4819204 Pan head screw (2x3)
49 4819036 Pack spring 75 4819054 REC function arm B (sub chassis)
50 4819037 Spring 76 4819055 REC spring 92 4819542 Pan head screw (2X7)
53 4819039 Motor rubber 77 4819056 REC arm spring (B) (R/P head)
54 4819533 Motor collar screw 78 4819057 REC arm spring (A) 94 4819060 Screw (2X7) (R/P head)
(motor) 79 4819058 Main gear 95 4819544 Cap screw (2X8)
56 4819534 Main belt 82 2557561 R/P head (erase head)
59 4819535 Eject slide lever 83 4819541 Erase head 97 4819072 Screw (2X7) (frame)
60 4819044 Eject slide lever spring 86 4819062 Lug 98 4819073 Screw (2X5)
61 4819045 Screw (eject slide lever) 87 4819063 Tapping screw (2X3) (REC sensor)
62 4819002 Screw (pack spring) 99 4819196 E ring
63 4819536 Frame 88 4819064 Bind tapping screw (2X4) 103 4819077 Washer (1.2)
64 4819537 Operation lever (sub chassis) 104 4819078 Washer (1.55)
65 4819538 Button lever shaft 89 4819195 Tapping screw (2X5) 105 4819079 Washer (22)
70 4819049 Main gear spring (sub chassis) 106 4819546 Motor essy
71 4819539 REC function arm (A) 90 4819066 Tapping screw (2x35) 130 4475591 REC lever
72 4819051 REC sensor (reel base) 131 4578281 DT screw (2.6X4)
73 4819052 REC sensor collar
I Turntable (HT-MD28)
in? 9,5137 DESCRIPTION mg 1}? DESCRIPTION 51m? if? DESCRIPTION
1 4917521 EP adapror 19 4835682 Pendulum 37 4835716 Spring
2 4835737 Cam gear assv 20 4835683 Hinge assv 38 41335717 Spnng
3 4835738 Platter assy 21 4835743 Motor assv 39 4835718 Spring
4 4835739 Returnlink assy 22 4835693 Micro switch 40 4835719 Sleelcramper
5 4635665 Starting lever 23 4835694 Push switch 41 4835721 Snrrng
6 4835730 Pick-up stand easy 24 4335697 DC board 42 4835723 Pendulum
7 4835741 Tone arm assy 25 4835695 5? Connector assv 43 4835724 Bell
8 4335668 Knob shalt 26 4835696 P_c. board 44 4835725 Rubberlube
9 4835669 Ollshaft 27 4835703 Screw 45 4835726 Rubberromit)
10 4835660 Press set 28 4835704 Screw 46 4835728 Rubbermal
11 4835671 Llher 29 4835706 Screw 47 4817549 Washer
12 4835675 Pendulum set 30 4835707 Screw 48 4835729 Washer
13 3307471 Push button 31 4835708 Screw 49 4817557 Washer
14 3307461 Push button 32 4835709 Screw 50 4835731 Washer
15 4835745 Dust cover assv 33 4835700 Screw 51 4835734 Washer
16 4835676 Platter shaft essy 34 4835712 Screw 52 4835735 Washer
17 4835670 Press plate 35 4835713 Screw 53 4935736 Steel ball
18 4835681 Hanging plate for motor 36 4835715 Screw 54 4850561 Player base assy

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