Description Of Schematic Diagram - Sharp 21F-PA330I Service Manual

DESCRIPTION OF SCHEMATIC DIAGRAM

SAFETY NOTE :
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
OPERATING.
IMPORTANT SAFETY NOTICE :
PARTS MARKED WITH " "(
MAINTAINING THE SAFETY OF THE SET. BE SURE TO
REPLACE THESE PARTS WITH SPECIFIED ONES FOR MAINTAIN-
ING THE SAFETY AND PERFORMANCE OF THE SET.
SERVICE PRECAUTION :
THE AREA ENCLOSED BY THIS LINE (
CONNECTED WITH AC MAINS VOLTAGE. WHEN SERVICING THE
AREA, CONNECT AN ISOLATING TRANSFORMER BETWEEN TV
RECEIVER AND AC LINE TO ELIMINATE HAZARD OF ELECTRIC
SHOCK.
! ) ARE IMPORTANT FOR
) IS DIRECTLY
NOTE :
1. The unit of resistance "ohm" is omitted.
(K = 1000 ohm, M = Mage ohm).
2. All resistors are 1/16 watts, unless otherwise noted.
3. All capacitor are
µµ
(P = F).
VOLTAGE MEASUREMENT CONDITIONS :
1. Voltages in parenthesis measured with no signal.
2. Voltage without parenthesis measured with 3mV
B & W or colour signal.
3. All the voltages in each point are measured with
VTVM.
WAVE FORM MEASUREMENT CONDITIONS :
1. The colour bar generator signal of 1.0V peak
applied at pin (41) of IC801.
2. Approximately 4V AGC bias.
21
µ
F, unless otherwise noted.