Hitachi HT-65S Serviceanleitung

SERVICE MANUAL
HT-65S
SPECIFICATIONS
Type 2-speed direct drive automatic
Platter Aluminum
diameter
Motor Brushless,
' 'Unitorque"
Spev,d 2•speeds; 33-1/3 and 45 rpm
Speed change system Electronic
SIN
78 dB
Wow and Flutter C025%
Speeo •teviation 0003%
Speed drift (for time) 0003%/hour
(for temperature) 0003%
Effective length 220
Overhang
15 mm
Track.;ng error
Lead wire capacitance 140 pF
Adjustable force range
(sca:e) O — 3 g/ 1 turn of the
(directly
Acceptable cartridge
weight 4—9
When a HITACHI cartridge
Cartridge Dual magnet type (MT-35)
Frequency response 10
FEATURES
1. Unitorque motor
2.
Manual priority and two-motor
mechanism.
3. Electronic return
SENSOR SYSTEM).
4. Hitachi's own HARC
Compound)
SPECIFICATIONS
DIRECT
August
HT-66S
system
alloy die-cast, 310 mm outer
slotless. coreless DC servo
motor
change-over system
WBMS
(5 - 35
mm
balance weight
readable in O
g steps)
g
is attached.
25,000 Hz
with quartz lock servo
fully automatic
detection mechanism (PHOTO-
(Hitachi Anti-Resonance
AND PARTS ARE SUBJECT
DRIVE AUTOMATIC
1981 TOYOKAWA
HT-65S
HT-66S
CONTENTS
SPECIFICATIONS
FEATURES
SERVICE POINTS
ADJUSTMENTS
DESCRIPTION
CIRCUIT DIAGRAM
PRINTED WIRING
REPLACEMENT
EXPLODED VIEW
TROUBLESHOOTING
BLOCK DIAGRAM
Output voltage 2.5 mV at
Channel difference dB
Channel separation
23 dB at I kHz
Tracking force
1.5 — 2b g (recommended
Sty:as tip
Diamond
Power source
120 V 60 Hz for
standard
220 V 50 Hz for Europe
240
standard
110
Asian
Power consumption
8 watts
Dimensions 435
(17M /8"
Weight 6.0 kg (132 ibso
Other devices
Auto in, auto repeat. auto return. auto
cut, anti-skating, track:vg force direct-
reading balance weight,
cueing, repeat indicatc.,
indicator.
auto-speed,
one-touch
only))
Highly sensitive straight tone arm with gimbal support
5.
6. Front panel operation with soft fingertip
switches
Viscous damped arm lifter never damages stylus
7.
8. Easy-to-operate ONE-TOUCH
9. Remote controlled operation
TO CHANGE FOR IMPROVEMENT.
TURNTABLE
WORKS
No. 286EGF
.
OF THE NEW CIRCUITS
BOARD
PARTS LIST
1 kHz 50 mm/ sec.
at 1 kHz
2 g)
stylus (DS-ST 35)
A and Canada
standard
V 50 H2 for u.K, ana Austrana
12C/220 - 240 V 50:60
and I-atin American coun:ries
x 365 x mm
Y. 14 x
vtscous damped
quartz locked
speed indicaa.,l, auto-size,
remote controi terminal and
control terminal (HT-66S
touch
SYSTEM (HT-66S)
(HT-66S)
1
3
6
. 10
13. 15
14. 16
.22
.24
.33