Hitachi HT-MD40 Serviceanleitung

HITACHI
SERVICE
SAFETY PRECAUTIONS
The fol lowing precautions should be observed when servicing.
1. Since many parts in the unit have special safety related characteristics,always
parts. Especially critical
Critical parts are marked with
2. Before returning a repaired unit to the customer, the service technician must thoroughly
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
SPECIFICATIONS AND
STEREO
August 1987
MANUAL
parts in the power circuit block should not be replaced with other makers.
in the circuit diagram
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
15 mm
Dual magnet type (MT-18R)
10 - 25,000 Hz
2.5 mV at I kHz, 50 mm/sec
PARTS ARE SUBJECT
TURNTABLE
TOYOKAWA
TY
HT-MD40
(US,CS,
CONTENTS • INHALT
SPECIFICATIONS • TECHNISCHE
CARACTÉRISTIQUES TECHNIQUES
FEATURES • MERKMALE
CARACTERISTIQUES
SERVICE POINTS • WARTUNGSPUNKTE
POINT D'ENTRETIEN
ADJUSTMENTS • EINSTELLUNGEN
REGI-AGES .
LUBRICATION • SCHMIERUNG
LUBRIFICATION
TROUBLESHOOTING • STÖRUNGSSUCHE •
RECHERCHE DE LA CAUSE
CIRCUIT DIAGRAM • SCHALTPLAN
PLAN DE BASE
PRINTED WIRING BOARD.
PLAN DE BASE
EXPLODED VIEW • AUSEINANDERGEZOGENE
DARSTELLUNG • VUE
REPLACEMENT PART
TABLEAU DES PIECES
use genuine Hitachi's
and printed wiring board.
Channel difference
Channel separation
Tracking force
Stylus tip
Weight
Power supply
Power consumption
Dimensions
Weight
TO CHANGE
WORKS
No. 565 EGF
BK,SA, K ZS)
• SOMMAIRE
DATEN •
•
•
3—5, 8-12
•
•
DES PANNES
•
PRINTPLATTEN •
ECLAITE 17. 18
LIST • ERSATZTEILUSTE •
.
replacement
test the unit to ascertain
1 dB at 1 kHz
23 dB
1.25 0.25 g
Diamond stylus (DS-ST18)
5.9 g
AC 220V 50 Hz (for VK,ZS)
AC 240V 50 Hz (for BK,SA)
AC 120V 60 Hz (for US,CS)
AC 1IOV - 120V/200- 240V
50/60Hz (for EW)
4 Watts
mm
3 kg
IMPROVEMENT.
FOR
3
13
14
15
16
19