Technics SX-P30 Service Manual

PRECAUTIONS BEFORE SERVICING
Mi Precautions for measuring of the output waveforms.
1.
2.
The waveform was measured with a “National Digital Storage Oscilloscope VP-5730A”. Therefore the waveforms of musical
tone signals shown may differ somewhat due to the difference in the timing of triggering.
Since the 1/10 test probe is used, the indicated voltage value on the bottom part of each waveform photo is 1/10 of the actual
value (e.g. 0.2 V/cm should be 2.0 V/cm).
i important safety notice:
Components identified by a /\ mark have special characteristics impotant for safety.
When replacing any of these components, use only manufacture’s specified parts.
| Symbolic Marks
The symbolic marks for resistors and capacitors which used in this circuits are classified as following TABLE-1 and TABLE-2.
1.
Bi
RESISTORS
* Resistors without symbolic mark are FIXED CARBON FILM RESISTORS (ERD-type).
+ All resistors are 1/4 WATT, +5 % TOLERANCE unless otherwise designated in schematic diagrams.
(TABLE-1)
SYMBOL SPECIFICATION
Fixed Carbon Film Resistors
“FLAME-PROOF” (ERD—F—type)
SPECIFICATION
Fixed Metal Film Resistors
“FLAME-PROOF’ (ERX—type)
Fixed Wire Wound Resistors Fuse Type Fixed Metal Oxide Film Resistors
“FLAME-PROOF” (ERF—type) “FLAME-PROOF” (ERQ—type)
© Fixed Metal Oxide Film Resistors Fuse Type Fixed Carbon File Resistors
“FLAME-PROOF” (ERG—type) “FLAME-PROOF” (ERD2FC —type)
© Fixed Metal Film Resistors (Precision and High Stability) (ERO—type)
©
CAPACITORS
* Capacitors without symbolic mark are POLYESTER CAPACITORS. (ECQM-type, ECQG-type, +10 % Tolerance)
- Polarized capacitors without symbolic mark are Aluminum Electrolytic Capapcitors. (ECEA-type, +20 % Tolerance)
(TABLE-2)
SPECIFICATION TYPE
Non-Polarized Electrolytic Capacitors ECEA_KN_type
Non-Polarized Electrolytic (for Network system) ECEA_Y_type
Tantalum Solid Electrolytic Capacitors ECS_type
Metalized Plastic Film Capacitors (TF Series) ECQV_type
Temperature Compensating Ceramic Capacitors | ECC_type
|e ODS a areca y
High-Dielectric Constant Ceramic Capacitors ECK_type
ECR_type
Axial Lead Ceramic Capacitors ; ECB_type
Metalized Polyester Film Capacitors for Across the Line ECQ._EW..type
Aluminum Electrolytic Capacitors for Smoothing Circuit . ECES_type sagem cl

Technics SX-P30 Specifications

General

Brand	Technics
Model	SX-P30
Category	Musical Instrument
Language	English