Memorex MT2252, MT2252, Руководство по обслуживанию

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ELECTRICAL ADJUSTMENTS
D1-2
Fig. 2-1
110%
0%
100%
Fig. 2-2
2-9: OSD HORIZONTAL
1.
2. Activate the adjustment mode display of Fig. 1-1.
Press the VOL. UP/DOWN button on the remote control
until the difference of A and B becomes minimum.
(Refer to Fig. 2-3)
B A
TV
00 OSD 15
Fig. 2-3
2-10: VERTICAL VCO
1.
2.
3.
4.
5.
Place the set with Aging Test for more than 15 minutes.
Receive an 80dB monoscope pattern.
Connect the digital voltmeter between the pin 5 of
CP601.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (03) on the remote control to
select "VIF VCO".
Press the VOL. UP/DOWN button on the remote control
until the digital voltmeter is 2.5V.
2-11: CONSTANT VOLTAGE
1.
2.
3.
4.
Using the remote control, set the brightness and contrast to
normal position.
Connect the digital voltmeter to TP402.
Set condition is AV MODE without signal.
Adjust the VR502 until the digital voltmeter is 130
±
0.5V.
2-6: HORIZONTAL PHASE
1.
2.
3.
4.
Receive the center cross signal from the Pattern
Generator.
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (05) on the remote control to
select "H.PHASE".
Press the VOL. UP/DOWN button on the remote control
until the SHIFT quantity of the OVER SCAN on right
and left becomes minimum.
2-7: VERTICAL SIZE
NOTE: Adjust after performing adjustments in section 2-6
1.
2.
3.
4.
5.
2-8: VERTICAL SHIFT
Receive the center cross signal from the Pattern
Generator.
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (06) on the remote control to
select "V.SIZE".
Press the VOL. UP/DOWN button on the remote control
until the rectangle on the center of the screen becomes
square.
Receive a broadcast and check if the picture is normal.
NOTE: Adjust after performing adjustments in section 2-7
1.
2.
3.
4.
Receive the center cross signal from the Pattern
Generator.
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (07) on the remote control to
select "V.SHIFT".
Press the VOL. UP/DOWN button on the remote control
until the horizontal line becomes fit to the notch of the
shabow mask.
"A"
2-12: SEPARATION 1, 2
1.
2.
3.
4.
5.
6.
Receive the stereo broadcasting signal.
Connect the AC voltmeter to CP351 through stereo filter
(L=400Hz, R=2KHz).
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (20) on the remote control to
select "SEPARATION 1".
Press the VOL. UP/DOWN button on the remote control
unit the output of L-CH and R-CH become minimum.
Press the CH UP button once to set to "SEPARATION 2"
mode.
Press the VOL. UP/DOWN button on the remote control
unit the output of L-CH and R-CH become minimum.