Sharp 21A1-RU Manual de serviço - Página 26

Procurar online ou descarregar pdf Manual de serviço para TV Sharp 21A1-RU. Sharp 21A1-RU 43 páginas. Colour television

20A1-RU

21A1-RU

21A2-RU

DESCRIPTION OF SCHEMATIC DIAGRAM

SAFETY NOTES:

1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE

REPLACING PARTS.

2. SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS

POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS OP-

ERATING.

IMPORTANT SAFETY NOTICE:

PARTS MARKED WITH " å " (

MAINTAINING THE SAFETY OF THE SET. BE SURE TO REPLACE

THESE PARTS WITH SPECIFIED ONES FOR MAINTAINING THE

SAFETY AND PERFORMANCE OF THE SET.

SERVICE PRECAUTION:

THE AREA ENCLOSED BY THIS LINE ( —– - —– ) IS DIRECTLY

CONNECTED WITH AC MAINS VOLTAGE.

WHEN SERVICING THE AREA, CONNECT AN ISOLATING TRANS-

FORMER BETWEEN TV RECEIVER AND AC LINE TO ELIMINATE

HAZARD OF ELECTRIC SHOCK.

NOTES:

1. The unit of resistance "ohm" is omitted.

2. All resistors are 1/8 watt, unless otherwise noted.

3. All capacitors are µ F, unless otherwise noted. (P = µµ F).

VOLTAGE MEASUREMENT CONDITIONS:

1. Voltages in parenthesis measured with no signal.

) ARE IMPOTANT FOR

2. Voltages without parenthesis measured with 3mV B & W or Col-

3. All the voltages in each point are measured with VTVM.

WAVEFORM MEASUREMENT CONDITIONS:

1. The colour bar generator signal of 1.0V peak applied at pin (24)

2. Approximately 4V AGC bias .

(K = 1000 ohms, M = Mega ohm).

our signal.

of IC201.