Hitachi HT-660 Service Manual

@HITACHI
SERVICE
English
SPECIFICATIONS
Type
Platter
Motor
Speed
Speed change system
SIN
Wow & Flutter
Speed deviation
Speed drift (for time)
(for temperature)
Effective length
Overhang
Tracking error
Adjustable force range
(scale)
Acceptable cartridge
weight
Accessory HITACHI
cartridge
Cartridge
FEATURES
1. Unitorque motor
2. Quartz control (quartz lock PLL servo)
3. Easy-to-operate front panel controls
4. Highly sensitive precision
DIRECT
MANUAL
2-speed direct drive auto-
matic system
Aluminum alloy die-cast. 330
mm outer diameter
Brushless. Slotless, Coreless
DC servo ' 'unitorque" motor
2-speeds; 33-113 and 45 rpm
Electronic change-over system
75 dB (DIN-B)
0.025% WRMS
0.003%
0.003%/hour
0.003% (5 — 350C)
220 mm
15 mm
20
O — 3 g/ 1 turn of the balance
weight (directly readable in
0.1 g steps)
4—109
Dual magnet type
(VFS-261E)
Handy fully automatic mechanism (with manual priority mechanism)
5.
6. Electronic
Two-motor
7.
tonearm 8. Start/stop
DRIVE AUTOMATIC
April
English
Deutsch
Franeais
Design and specifications subject to change without
for further improvement.
Frequency response
Ou tput voltage
Channel difference
Channel separation
Tracking force
Stylus tip
Power source
Power consumption
Dimensions
Weight
Other devices
return detection mechanism
system with improved performance
mechanism
TURNTABLE
1979
HT-660
No. 166
notice
20 — 20,000 Hz
3.5 mV at 1 kHz 50 mm/sec.
1 dB at 1 kHz
23 dB at 1 kHz
1.25 — 2.0 g (recommended
1.5 g)
0.4 x 0.7 mil elliptical dia-
mond stylus (DS-ST26E)
120 V 60 Hz for U.S.A. &
Canada standard
220 V 50 Hz for Europe
Sta ndard
240 V 50 Hz for U.K. &
Australia standard
120/220 V 50/60 Hz for Asia
& Latin America countries
6 watts
454 x 391 x 140 mm
(17-7/8" x 15-3/8" x 5-1/2")
9 kg (19 lbs.)
Auto in, auto repeat, auto re-
turn. auto cut, anti-skating,
tracking force direct-reading
balance weight, stroboscope
and neon lamp, viscous damped
cueing, soft touch switches,
electronic brake.