Sharp 8C221 Service Manual page 15

Test Equipment Connections:
GENERAL . . . . . . . . Connect AC power plug through the
isolation transformer to power supply.
Set Channel selector to the highest unused channel.
Preset Colour control to approximately midposition.
Set the Contrast control to maximum. Connect a
short clip lead between TP806 and 807.
BIAS SUPPLY . . . . . . . . . . . Apply t7.5 volts bias to TP204.
STEP
ADJUSTMENT
1 Set the Colour control to
Apply output of Sweep Generator to the RF Modulater.
2
Set the Colour control to the centre of it range.
3
Apply 7.W bias to TP204.
4
Refer to Figure 12.
SWEEP
GENERATOR
of its range.
OSCILLOSCOPE . . . . . .
Detector Test Block" shown in Figure 4.
SWEEP GENERATOR . . . . . . . . . . . Connect the IF Video Out-
put through the Out Put Pad. (Refer to Figure 5 ).
MARKER GENERATOR . . . . . . . . Connect as shown.
SIGNAL GENERATOR . . . . . . . . . . . . Connect as shown Produce
of 36.875MHz signal.
RF MODULATOR . . . . . . . . . . . . . . . . . . Connect as shown.
OUT PUT PAD . . . . . . . . . . . . . . . . . . . . . . . . . Connect as shown.
MARKER
COMPONENT
GENERATOR
Connect to TP802 through "Video
PROCEDURE