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SAFETY PRECAUTIONS
The following precautions should be observed when servicing.
HT-MD40
(US, CS, BK, SA, VK, ZS)
CONTENTS - INHALT -. SOMMAIRE
SPECIFICATIONS - TECHNISCHE
DATEN-
CARACTERISTIQUES
TECHNIQUES
.........
1,2
FEATURES - MERKMALE -
CARACTERISTIQUES ..........
000. c eee eee
3
SERVICE
POINTS - WARTUNGSPUNKTE -
POINT D''ENTRETIEN ................
3—5, 8-12
ADJUSTMENTS - EINSTELLUNGEN -
REGLAGES 3.02. saci
eae
etns Hes 6,7
LUBRICATION - SCHMIERUNG -
LUBRIFICATION ...... 0.0.0.0
cee eee
eee
13
TROUBLESHOOTING - STORUNGSSUCHE -
RECHERCHE
DE LA CAUSE
DES PANNES....
14
CIRCUIT
DIAGRAM - SCHALTPLAN -
PLAN
IDE. BASE:
ic-scase'sececees
wom sete ieee cette 15
PRINTED
WIRING
BOARD: PRINTPLATTEN -
PLAN:
(DE (BASE ii: sc cotte sett diaebee Swen Stee Secs 16
EXPLODED
VIEW - AUSEINANDERGEZOGENE
DARSTELLUNG-VUE
ECLATTE..........
17,18
REPLACEMENT
PART
LIST- ERSATZTEILLISTE «
TABLEAU
DES
PIECES.................
000. 1
1. Since many
parts in the unit have special safety related characteristics,always use genuine Hitachi's replacement
parts. Especially critical parts in the power circuit block should not be replaced with other makers.
Critical parts are marked with A in the circuit diagram and printed wiring board.
2.
Before returning a repaired unit to the customer, the service technician must thoroughly test the unit to ascertain
that it is completely safe to operate without danger of electrical shock.
SPECIFICATIONS
Type
Platter
Moter
Speed
Signal to noise ratio
Wow and flutter
Tonearm
Effective length
Overhang
Cartridge
Frequency response
Output voltage
2-speed, belt-drive
fully-automatic turntable
Aluminum alloy die-cast,
% 301mm outer diameter
DC servo motor
2-speed; 33-1/3 and 45 rpm.
70 dB (DIN-B)
0.045 % (WRMS)
Straight pipe tonearm
205 mm
15mm
Dual magnet type (MT-18R)
10 — 25,000 Hz
2.5 mV at 1 kHz, 50 mm/sec
Channel difference
1 dB at 1 kHz
Channel separation
23 dB
Tracking force
1.26 + 0.25 g
Stylus tip
Diamond stylus (D$-$T 18)
Weight
5.9g
Power supply
AC 220V 50 Hz (for VK,ZS)
AC 240V 50 Hz (for BIKK,SA)
AC 120V 60 Hz (for US,CS)
AC 110V — 120V/200- 240V
50/60Hz (for EW)
Power consumption
4 Watts
Dimensions
370(W) X92(H)x360(D)
mm
Weight
3 kg
SPECIFICATIONS
AND
PARTS
ARE
SUBJECT
TO
CHANGE
FOR
IMPROVEMENT.
STEREO
TURNTABLE
August
1987
TOYOKAWA
WORKS
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