Sansui SR 525 Service Manual

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SERVICE MANUAL

TWO-SPEED DIRECT- DRIVE TURNTABLE

SANS! SIR-525

SANSUI ELECTRIC CO., LTD.

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Notice:

In this service manual, some parts have four types, A, B, C and D in same
parts No. as shown In Parts List. Each type can be indentitied from Mark
on the carton case as Fig. 1.

TYPE A .................. SR-525

TYPE B .................. Sit-525E

TYPE C .................. SR-SZSP

TYPE 0 .................. (Do not use the parts in type D as they

are not applicable for this model).

Type Mark
Type A No mark
Type 3 Mark ®
Type C Mark ®

*When ordering parts, please use parts name and the stock No. referring
to Parts list.

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1. SPECIFICATIONS

TYPE .......................... Two-speed direct-drive OUTPUT VOLTAGE .......... 3.5mV (1,000Hz, 50mm/sec.)
SPEEDS ...................... 33 )5 and 45 rpm OPTIMUM LOAD IMPEDANCE
FINE SPEED ADJUSTMENT ............... - ......... 47kt)
RANGE ...................... $3.596 FREQUENCY RESPONSE ...... 10Hz to 23 kHz
PLATTER ...................... Aluminum alloy die-cast OPTIMUM TRACKING FORCE
31cm (12-%') diameter, ........................ 1.5 to 203
1.4 kg (3.1 lbs.) STYLUS .................... diamond, 0.5m iI (Model
MOTOR ...................... 20-pole SN-27)
brushless DC servo-type POWER REQUIREMENTS ........ 100, 120, 220, 240V, 50/60Hz
WOW 3. FLUTTER ............ less than 0.03% (W.R.M.S.) 120V (Usable 110-130V), 60Hz
S/N ........................ better than 60dB (U.S.A. 8: Canada only)
TONEARM .................... StalicalIy-balanced S-shaped POWER CONSUMPTION ...... 5W (rated)
tubular DIMENSIONS .................. 469mm (1845')
TONEARM lENGTI-I .......... 220mm (8-96') 150mm (5-56') H
OVERHANG ................ 17.5mm (96') 375mm (14-55?) D
SUITABLE CARTRIDGE WEIGHT ...................... 9.5kg (20.9 lbs.) Net
WEIGHT .................. 4 to 11 g ' 11.2kg (24.6 lbs.) Packed

CARTRIDGE (only for units purchased in areas other than U.S.A.,

Canada and EW°P°)- -M°V5I8 magnet-type (Model 0 Design and specifications subject to change without notice tor
SV-27A) Improvements.

TABLE OF CONTENTS

Section lie Page
1. SPECIFICATIONS ................................................ 1
2. PARTS LOCATIONS AND PARTS LISTS ........................ 2

2-1. 5-0006 Power Supply Circuit Board ............................ 2

3. DISASSEMBLY WITH EXPLODED VIEWS. PARTS LOCATIONS
.................................................... 3. 4
4. ADJUSTMENTS .................................................. 5
4-1. Pre-Adjustment .............................................. 5
4-2. Fine Adjustment .................................... '. . . ....... 5
5. SCHEMATIC DIAGRAM .......................................... 6
6. PACKING LIST .................................................. 7
7. ACCESSORY PARTS LIST ...................................... 7