Sharp LC 20M4U, Руководство по обслуживанию

Страница: 21 / 52

22
LC-20M4U
DESCRIPTION OF SCHEMATIC DIAGRAM
1. When the exclusive-use AC adapter is used, the color
bar signal of color bar generator for service is input
to get the normal screen. When the audio is
minimized, the voltage value is measured with the
20 k
Ω
/V tester.
2. When the exclusive-use AC adapter is used, the color
density, lightness and color hue are set to the center
position, and the signal of color bar generator for
service is observed to get waveform.
The wave form test point is indicated with the mark
(
) in the wiring diagram.
3. Indication of resistors and capacitors
[Resistors]
Unit : Nonindication …
Ω
, K…k
Ω
,
M … M
Ω
Error : Nonindication …
±
5%
F …
±
1%
D …
±
0.5%
[Capacitor]
Unit : Nonindication or
µ
…
µ
F,
P or p … pF
IMPORTANT SAFETY NOTICE:
PA RT S M A R K E D W I T H "
å
" ( )
A R E
INPORTANT FOR MAINTAINING THE SAFETY OF
THE SET.
BE SURE TO REPLACE THESE PARTS WITH
SPECIFIED ONES FOR MAINTAINING THE SAFETY
AND PERFORMANCE OF THE SET.
CAUTION:
This circuit diagram is original one, therefore there
may be a slight difference from yours.
Resistors
Nonindication Carbon-film resistor
C Solid resistor
S Metal-oxide-film resistor
N Metal-film resistor
W Cement resistor
T Special resistor
Capacitors
Nonndication Ceramic capacitor
ML Mylar capacitor
PF Polypropylene
film capacitor
TA Tantalum capacitor
ST Styrol capacitor
[Item]
AVIS DE SECURITE IMPORTANT:
LES PIECES MARQUEES
"
å
" ( ) SONT
IMPORTANTES POUR MAINTENIR LA SECURITE
DE L'APPAREIL.
NE REMPLACER CES PIECES QUE PAR DES
PIECES DONT LE NUMERO EST SPECIFIE POUR
MAINTENIR LA SECURITE ET PROTEGER LE
BON FONCTIONNEMENT DE L'APPAREIL.