Hitachi HT-860 Serviceanleitung

@HITACHI
SERVICE MANUAL
Fl CATIONS
PHONO MOTOR
Quartz synthesizer
Type
drive,
Motor Brushless, siot'ess, coreless, DC servo
direct drive ('Unitorque"
330 mm outer diameter aluminum alloy
Platter
die-cast
Speed 33-1/3, 45 rpm
Speed adjustment
range
78 dB (DIN-B)
S/N
0.025%
Wow and Flutter
Speed drift
0.003%/hour
{for time)
(for temperature) 0.003%
Start-up time 1/3 rotation (at 33-1/3 rpm)
TONEARM
Static balanced pipe tonearm
Type
Effective length 230 mm
Overhang 15 mm
Tracking error 20
AdJustabIe force renge 0—3 g/ 1 turh of the balance weight
(directly readable in 0.1 g steps)
FEATURES
I. Unitorque motor
Quartz control (quartz lock PLL servo)
2.
Microcomputer-controlled
3.
Ouartz•tvpe Variable pitch control
Autome tic Size and speed detection
Non-contact detection
Electronic memory repeat
DIRECT-DRIVE
Design e ndspecifications
pitch control, direct
automatic turntable
motor
(in 0.1% steps) with quartz
(WRMS)
(5 - 350C)
functions
automatic mechanism
AUTOMATIC
October
English
Deutsch
Frangais
subject to change w ithout n otice forfurther i mprovement.
Acceptable cartildgø
wøight
Head shell
Head shell connector
Tonearm height ad-
justment range
Accessory mechanism
CABINET
Cabinet
Dust cover
OTHERS
Power source
Power consumption
Dimensions
Weight
Tonearm swing mechanism
Digital display indicator section
Built-in safety functions to counter incorrect operation
4. Independent drive system
5. Double insulators for
6. Front panel control
7.
Tonearm height adjustment
TURNTABLE
1979
HT-860
No.189
10 g
Magnesium alloy die-east head shell
weight 9.5 g
Chucking lock system
6 mm
Antiskating device
Aluminum alloy die-cast
Acryl resin, detachable
120 V 60 Hz for U.S.A. and
standard
220 V 50 Hz for Europe •standard
240 V 50 Hz for U.K. and Australia
standard
120/220/240 V 50/60 Hz for Asia and
Latin America
15 watts
484 (W) x 151 (H) x 412 (D) mm
(19-1/20" x 5-9/10" x 16-1/5")
14 kg (31 lbs,)
enhanced acoustica
with soft-touch switches
mechanism
Canada