Optonica rp 7100 hb service manual

Page 1

= OPTONICA SERVICE MANUAL

STEREO TURNTABLE

MODEL
RP-71OOH

(Silver Panel)

RP-71OOHB

(Brown Panel)

In the interests of user-safety the set should be
restored to its original condition and only parts
identical to those specified be used.

INDEX TO CONTENTS

SPECIFICATIONS ........................... 2
DESIGNATION OF PARTS .................... 2
DISASSEMBLY ............................. 3
VOLTAGE SELECTION ....................... 3
TONEARM LIFTER .......................... 3
CARTRIDGE MOUNTING .................... 4
DUST COVER MOUNTING .................... 4
TRACKING FORCE ADJUSTMENT .............. 5
ADJUSTMENT OF AUTOMATIC LEAD-IN ......... 6
MECHANISM

CLEANING THE STYLUS TIP .................. 6

CIRCUIT DESCRIPTION
SCHEMATIC DIAGRAM OF LOGIC CIRCUIT. . , .7,8

OUTLINE ............................ 9~11
BEHAVIORS OF LOGIC CIRCUIT ............ 12
SIGNAL FLOW CHART .................. 13,14
BEHAVIORS OF CONTROL CIRCUIT ...... 15~18
ALIGNMENT POINTS ..................... 19,20

ADJUSTMENT
STYLUS HEIGHT ADJUSTMENT .............. 21
(LEAD-IN HEIGHT)
AUTO RETURN ADJUSTMENT .............. 21
SENSITIVITY ADJUSTMENT ................ 21
CHECKING OF APLD SENSOR HEIGHT ....... 22
QUARTS LOCK TIMING ADJUSTMENT ........ 22
TONEARM RETURN DETECTOR ADJUSTMENT. 22
DETECTED SENSITIVITY ADJUSTMENT ....... 22
ADJUSTMENT OF MOTOR DRIVE CIRCUIT. . .I 23
PITCH FINE ADJUSTMENT ................. 23
FREQUENCY ADJUSTMENT ................ 23
TOP VIEW OF LOGICAL IC .................. 24
EQUIVALENT OF INTEGRATED CIRCUIT ..... 25,26
SCHEMATIC DIAGRAM ................... 27~30
WIRING SIDE OF P.W. BOARD ............. 31~34
CABINET EXPLODED VIEW ................ 35,36
PARTS LIST ........................... 37~42
AC SUPPLY CORD WIRING CONNECTION ....... 43

SHARP CORPORATION OSAKA, JAPAN

RP-7100H

RP-7100HB

Page 2

Power source:

Power consumption:

Semiconductors:

Dimensions:
(with dust cover)

Weight:

TURNTABLE
Motor:

Speed stabilization:

Drive system:

SPECIFICATIONS

AC 110/220/24OV, 50/60 Hz
10W

22-IC

47-transistor

33-diode

2-hall elements

1 quartz-crystal oscillator

Width: 480 mm (18-29/32")
Height: 108 mm (4-1/4")
Depth: 384 mm (15-1/8")

9 kg (20 lbs)

Core~less DC servo mono-torque
motor

160-pole frequency generator, PLL
with quartz-crystal oscillator, sam-
ple hold phase detector.
Direct-drive

Speed :

Speed control range:

Wow & Flutter:
Rumble:
Turntable platter:

TONEARM
Type:

Effective length:
Overhang:
Off-set angle:

Cartridge weight range:

334/3 and 45 rpm

Within t4%

$0.045: (DIN 45 507)
Better than 68 dB (DIN-B)
300m (12in.)
cast with stroboscope marks.

aluminum die-

Statically balanced pipe arm with

" APLD sensor.
210 mm (18-1/4")
11mm (7/16")
19°
4 to 12 grams

lflmcifications are subject to change without prior notice-I

DESIGNATION OF PARTS

Mfl X;

0®0000®

;-u-u-v-~

1 41X

eooe eoeeeeeo eeooeeooooe

Turntable Platter

Center Spindle

AC Supply Cord

APLD Sensor

Headshell

Tonearm

Counterweight

Output Leads

Tonearm Rest

Tracking Force Gauge
Tracking Force Adjustment
Knob

Anti-skating Control
Power Switch

Pitch Control

Spéed Selector ' '
Quarts-crystai PLL on/off
Voltage Selector
Stroboscope

APLD Number Buttons and
Indicators

Cueing Control Button
Repeat Play Button:

Cut Out Button

Play Start Button

Figure 1,

' "-2-7" 1"1"::::" "1 ' V

/\