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PRIOR TO STARTING
TOOLS AND FIXTURES FOR
ADJUSTMENT
ADJUSTMENT
Dismount the top cover, rear cover and bottom lid.
+
DC voltmeter or digital voltmeter
Perform sufficient warm-up of the TV зе! and testers.
*
Oscilloscope
(for 30 minutes or more).
°
Pattern generator (NTSC)
+
Unless specified otherwise specially in [ADJUSTING STEP]
* If monoscope signal can be output, it is possible to perform
given below, perform adjustment after setting the switches
further accurate adjustment.
and VRs on the front panel to the following positions:
+ The signal should be input to VIDEO А.
CONTRAST
: CLICK position
*
Color thermometer
BRIGHT
: CLICK position
+ Adjustment is possible without it.
If available, however,
CHROMA
: CLICK position
further accurate adjustment is possible.
PHASE
: CLICK position
е
Short jumper
e
Regarding the list of the layout of adjusted parts, refer to
•
10k resistor
[ADJUSTMENT LOCATION] in [SCHEMATIC DIAGRAM}.
In addition to the above, the following tools are necessary
to adjust the purity and convergence.
e
Magnelic eraser
e
Silicon bond (KE4866)
e
REICHLOCK ог G2 bond
ADJUSTING STEP
POWER PCB
Measuring
i
Adjustment
Adjustment of
PATTERN
TP-91
R913
B1 VOLTAGE
GENERATOR
. Input the total black signal.
2. Adjust the B1 adjust VR (R913) so that the voltage
between TP-91 and ТР-Е (-) becomes ОС 110V.
3. Confirm that the B1 voltage scarcely changes even
when the input signal has been changed.
DC VOLTMETER
or
DIGITAL
VOLTMETER
POWER PCB
(Мо.50353) 11
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