Hitachi HT-860 Service Manual

@HITACHI
SERVICE MANUAL
SPECIFICATIONS
PHONO MOTOR
Type
Quartz synthesizer
drive,
Motor
Brushless, slotless, coreless, DC servo
direct drive ."Unitorque"
Platter
330 mm outer diameter aluminum alloy
die-cast
Speed
33-1/3, 45 rpm
Speed adjustment
range
SIN
78
Wow and Flutter
0025%
Speed drift
(for time)
0003%
(for temperature)
0.003%
Start-up time
1/3 rotation (at 33-1/3 rpm)
TONEARM
Type
Static balanced pipe tonearm
Effective length
230 mm
Overhang
15 mm
Tracking error
20
Adjustable force range
(directly readable in CM g steps)
FEATURES
I.
Unitorque motor
2. Quartz control (quartz lock PLL servo)
Microcomputer-controlled
3.
Quartz-type variable pitch control
Automatic size and speed detection
E
Non-contact detection automatic mechanism
E
Electronic memory repeat
Design and specifications subject to change without notice for further imorovement.
pitch control. direct
automatic turntable
motor
(in 0.1% steps) with quartz
(DIN-BJ
(WRMS)
/hour
(5 - 350C)
g/ I turnof thebalance w eight
functions
October
English
Deutsch
Francais
Acceptable cartridge
weight
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
E
Built-in safety functions to counter incorrect operation
E
4. Independent drive system
5. Double insulators for enhanced
Front pane' control with soft-touch
6.
7. Tonearm height adjustment
1979
H T -860
No.189
4—10 g
Magnesium alloy die-cast head shell
weight 9.5 g
Chucking lock system
6 mm
Anti-skating device
Aluminum alloy die-cast
Acryl resin, detachabie
120 V 60 Hz for U.S.A. and Canada
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.)
acoustics
switches
mechanism