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1. BEFORE MAKING ELECTRICAL
ADJUSTMENTS
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PC6 assemblies.
CAUTION
Use an isolation transformer when performing any
Before removing the anode cap, discharge electricity
because it contains high voltage.
When removing a PCB or related component, after
unfastening or changing a wire, be sure to put the wire
back in its original position.
Inferior sillcon grease can damage IC's and transistors.
When replacing IC's and transistors. use only specified
silicon grease (YG6260M).
Remove all old silicon before applying new silicon.
1-l: Prepare the following measurement tools far
electrical adjustments.
Sweepmarker Generator
2. Oscilloscope
3. Digital Voltmeter
4. Color Bar Generator
2. BASIC ADJUSTMENTS
On-Screen Display Adjustment
t h e
s t r a i g h t e n e d
on
r e m o t e
c o n t r o l
F i g .
2 - f .
The adjustment mode display will appear as shown
NOTE
Use the
keys on the remote control to select the
options shown in Fig. 2-2 and Fig. 2-3.
Press the 8 key to end the adjustments.
ELECTRICAL ADJUSTMENTS
L
2-1: VCO AND AFT
NOTE
p a p e r
c l i p
m a r k e d
w i t h
a n
2. Connect input terminal of the sweepmarker generator to
Fig. 2-l
3. Connect a 10K ohm variable resistor to IF AGC terminal
1. CUTOFF
2. VSIZE
3. BRI. AUTO
4. X-RAY
5. CONT
8. END
2 .
v c o
3. AFT
4. AGC
5. COL
6. TINT
7. BRI
8. END
i n t o
t h e
h o l e
a r r o w
a s
s h o w n
Connect input and output terminals of the
sweepmarker generator to the circuit as shown
in Fig. 2-4-a,
i t .
SWEEPMAKER
GENERATOROUTPUT
SWEEPMAKER
G E N E R A T O R I N P U T 47Kohm lN60 4.5 pF
TP204.
Fig. 2-Z
Fig. 2-3
0.22 rF
Fig. 2-4-z
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