Table Of Contents; Safety Precaution - Technics SX-PX107 Service Manual

CONTENTS
M@ PART I (INTRODUCTION)
SAFETY PRECAUTION ............0202. cece eeeeee
HOW TO ASSEMBLE THE PIANO .........0..0c0eus
KEYBOARD RANGES .......2..2.00. cece eee eee eee
OPTIONS ished ie cnieese each tah cbahictbis ies weleaten
ARRANGEMENT OF CONTROL PANEL ............-
BASIC FUNCTIONS . 200... cece cece e cece cece cece
TERMINALS ... 00... .c cece cee cece cence cece ecenes
INITIAL SETTING 0.0.00 cece cece eetee cere seueeaees
PARTS LOCATION .. 0... cccccucecee ree enceneesees
DISASSEMBLY INSTRUCTIONS ..........0.-..00085
SYMPTOMS WHICH APPEAR TO BE SIGNS OF
TROUBLE Secos cv feted cde pwotinneGdad an oneweeees
ABOUT THE SELF-DIAGNOSTIC FUNCTION ...,.....
MIDI IMPLEMENTATION CHART ..............---..
PRECAUTIONS BEFORE SERVICING ......-...0008,
PART H (SCHEMATIC DIAGRAM)
BLOCK DIAGHAM 22264 ss0rdeedwccncetcnrnesitavade
MAIN & TONE GENERATOR
CIRCUIT BOARD ........ P U R Se EE ee:
MAIN & TONE GENERATOR CIRCUIT
DIAGRAM saci agar ie cctees pete 11-9
AC POWER SUPPLY, AMP & POWER
SUPPLY AND HEADPHONES
GICUIT BOARD: 12.50... cerca eaerteneres E-13
AC POWER SUPPLY, AMP & POWER
SUPPLY AND HEADPHONES
CIRCUIT DIAGRAM ..........5- a e ee eet U-17
CONTROL PANEL CIRCUIT DIAGRAM ...... IL-9
CONTROL PANEL CIRCUIT BOARD ........ I-21
-MANUAL KEYBOARD 1 AND 2
CIRCUIT cc oxnnived eaeuetitint vote eerses IP-24
JACK CIRCUIT .atixginesode catewes santas U-27
@ PART III (REPLACEMENT PARTS LIST)
REPLACEMENT PARTS LIST
(P.C.B. and Wiring Parts) ....-..--. eee ee eee eee HI-1
CABINET PARTS LOCATION .........-.-...--- 0065 I-5
REPLACEMENT PARTS LIST
(Cabinet and Chassis Parts} ......- 0... cae cece eae HI-7
PACKING .......-------e- S a d aleidialsied o avbeate enc ... HI-10
e Safety Precaution
oaohon-
. Before servicing, unplug the power cord te prevent an electric shock.
. When replacing parts, use only the manufacturer's recommended components for safety.
. Check the condition of the power cord. Replace if wear or damage is evident.
. After servicing, be sure io restore the lead dress, insulation barriers, insulation papers, shields, etc.
. Before returning the serviced equipment to the customer, be sure to make the following insulation resistance
test to prevent the customer from being exposed to a shock hazard.
e insulation Resistance Test
1. Unplug the power cord and short the two prongs of the plug with a jumper wire.
2. Turn on the power switch.
3.
Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part,
such as screw heads, connectors, control shafts, handle brackets, etc. Measurements should range from 4 MQ to.
infinity for all exposed parts.
Exposed
metal
part
a A
Ohmmeter
Resistance= 4MQ to oo