Sharp 10P-35G Manuel De Maintenance page 3

Warning: Operation of this receiver outside the cabinet
- or with the covers, involves a shock hazard from the
receiver power supplies. Work on the receiver should
not be attempted by anyone who is not thoroughly
familiar with precautions necessary when working on
high voltage equipment.
Caution: Do not install, remove, or handle the picture
tube in any manner unless shatterproof goggles are
worn. People not so equipped should be kept away
while handling picture tube. Keep picture tube away
[ from the body while handling.
SAFETY TEST
If the receiver becomes damaged or has been dis-assembled
for any reason, the following safety test should be per-
formed.
1. Inspect lead dress inside receiver, all leads should be
properly connected and wires and/or cables should not
touch power resistors.
. Verify that all chassis insulators are properly installed
and are not broken.
. Reassemble the receiver completely.
. Connect the receiver to a 220V, 50Hz power outlet and
turn "ON"'..
. A VTVM, a 1500 ohm, 1W, resistor and a ground exten-
sion lead with alligator clips at each end are required for
making voltage measurements. Set the VITVM to obtain
. readings on the lowest AC VOLTS scale. Connect the
ground lead of the VTVM and one end of the ground ex-
tension lead to the ground side of the AC power outlet
or a known ground source such as a cold water pipe.
Connect the 1500 ohm resistor between the other end of
the ground extension lead and the tip of the voltage
probe of the VTVM. AC voltage measurements must
then be made by firmly applying the tip of the voltage
probe to the following points.
Ww
TEST POINTS
VHF/UHF ANTENNA TERMINALS CONTROL PANEL,
CHASSIS MOUNTING SCREWS AND ALL KNOBS.
If any reading is higher than 1.0V peak., the cause should
be immediately identified and corrected. Reverse connec-
tion of receiver AC Line Cord Plug in the 220V, 50Hz AC
power outlet and recheck voltage readings. If any reading is
higher than 1.0V peak., the cause should be immediately
identified and corrected.
Safety Check at Servicing
1. Make repairs carefully!
1) When replacing the parts, be sure to use the specified
ones. (Fuse, power cord, high tension circuit compo-
nents, power circuit components, internal wiring
leads).
2) At servicing, also check for parts location, spacing,
wiring, soldering and arrangement of insulating ma-
terials (tube, tape, PVC sheet etc.)
. Recheck the safety after repairs!
1) Make sure the receiver is free from contamination of
dust, solder chips, waste wire, etc.
2) Check for the insulation by using a tester, etc. (Be-
tween terminals of AC plug, between the antenna
terminal plate and exposed metallic parts.)
3) Make sure the tuner cover, high tension box case, rear
lid, bottom lid, etc. have been properly set in place.
Let the users have a proper knowledge to operate the
receiver.
TV SECTION
1. Adjustment of +B Voltage
1) Power on the unit - on AC (220V, 50Hz) and selector
switch is set at TV.
2) Operate the set in normal condition. After the Picture
and sound are operated normally, turn R705 (+B Ad-
justing control) to adjust Voltage of TP701 to be DC
11.5+40.1V.
'During the above operation, TV sound volume is set
at the Minimum, Balance is set at the center and Tone
is set at the high.