Yamaha pf 50

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STEREO TURNTABLE

F-50/P-27

SERVICE MANUAL

IMPORTANT NOTICE

This manual has been provided for the use of authorized Yamaha Retailers and their service personnel,
It has been assumed that basic service procedures inhcrant to the industry, and more specifically Yamaha
Products, are already known and understood by the users, and have therefore ml been restated.

WARNING: Failure to follow appropriate service and safety procedures when servicing this product
may result in personal injury, destruction of expensive components and failure of the
product to perform as specified. For these reasons, we advise all Yamaha product owners
that all service required should be pcrformed by an authorized Yamaha Retailer or the
appointed service representative.

IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute
authorization, certification, recognition of any applicable technical capabilities, or
establish a principle-agent relationship of any form.

The data provided is believed to be accurate and applicable to the onltls) indicated on the cover. The
research, engineering, and service departments of Yamaha are continually striving to improve Yamaha
products, Modifications are, therefore, inevitable and changes in specification are subject to change wizhout
notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributor's
Service Division.

WARNING: Static discharges can destroy expensive components, Discharge any static electricity your
body may havc accumulated by grounding yourself to the ground buss in the unit (leavy
gauge black wires connect to this buss).

IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work palm:
you apply power to the unit.

K¥

I CONTENTS

T0 SERVICE PERSONNEL.
PANELCONTROLS..........
PACKlNGlNSTRUCTION..................
SPECIFICATIONS.......................
INTERNALVIEW
DISASSEMBLYPROCEDURES . . 4/5

MECHANICAL DESCRlPTlON . . . . .... 6~8
ADJUSTMENTS - 9
PRINTEDCIRCUITBOARD . .....- 10/11
SCHEMATICDIAGRAM...............12~15
PARTSLIST.........r.............16~24

MNNI

% YAMAHA

NlPPDN GAKKl (30.. LTD. HAMAMATSLJ. JAPAN
2.6k333 n 69 Primed in Japan 'ssli

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PF-SO/ 27

I TO SERVICE PERSONNEL

1. Critical Cumponents Information
Components having special characteristics are marked ft;
and must be replaced with parts having specifications equal

to those originally installed, EQUIPMENT AC LEAKAGE TESTER
2. Leakage Current Measurement (For 120V Model Onlvl, UNDER TEST 0R EQUIVALENT
When service has been completed, it is imperative that you
verify that all exposed conductive surfaces are properly ____
insulated from supply circuits. ® D
0 Meter impedance should be equivalent to 1500 ohm shunted WALL S I
V 0'15 OUTLET INSULATING TABLE 7

o Leakage current must not exceed 0,5mA.

0 Be sure to test for leakage with the AC plug in both polarities.

I PANEL CONTROLS

H 'PF'E'O H

O P-27