Sharp LC-20B2UA, Руководство по обслуживанию

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30
LC-20B2UA
IMPORTANT SAFETY NOTICE:
PARTS MARKED WITH "
å
"( ) ARE
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.
AVIS DE SECURITE IMPORTANT:
LES PIECES MARQUEES “
å
” ( )SONT
IMPORTANTES POUR MAINTENIR LA SECURITE DE
L'APPAREIL.
NE REMPLACER CES PIEDES QUE PAR DES
PIECES DONT LE NUMERO EST SPECIFIE POUR
MAINTENIR LA SECURITE ET PROTEGER LE BON
FONCTIONNEMENT DE L'APPAREIL.
CAUTION:
This circuit diagram is original one, therefore there
may be a slight difference from yours.
DESCRIPTION OF SCHEMATIC DIAGRAM
1. When the exclusive-use AC adapter is used, the
colour bar signal of colour 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
colour density, lightness and colour hue are set to
the center position, and the signal of colour bar
generator for service is observed to get waveform.
The waveform 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
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]