Memorex MVT2137, Руководство по обслуживанию

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ELECTRICAL ADJUSTMENTS
D3-3
Receive the color bar pattern. (RF Input)
Connect the oscilloscope to TP801 (R802).
Using the remote control, set the brightness, contrast,
color and tint to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (15) on the remote control to
select "COLOR".
Adjust the VOLTS RANGE VARIABLE knob of the
oscilloscope until the range between white 100% and
0% is set 5 scales on the screen of the oscilloscope.
Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 110% ± 10% of
the white level. (Refer to Fig. 2-3)
Receive the color bar pattern. (Audio Video Input)
Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 2~6.
2-14: SUB COLOR
1.
2.
3.
4.
5.
6.
7.
8.
Fig. 2-2
2-13: SUB TINT
1.
2.
3.
4.
5.
6.
7.
Receive the color bar pattern. (RF Input)
Connect the oscilloscope to TP803 (R810).
Using the remote control, set the brightness, contrast,
color and tint to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (16) on the remote control to
select "TINT".
Press the VOL. UP/DOWN button on the remote
control until the section "A" becomes a straight line.
(Refer to Fig. 2-2)
Receive the color bar pattern. (Audio Video Input)
Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 2~5.
"A"
White 100%
White 0%
2-15: 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. 2-4)
Fig. 2-4
A B
TV
00 OSD 15
2-16: H VCO
1.
2.
3.
Receive the monoscope pattern. (RF Input)
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (04) on the remote control to
select "H VCO".
Check if the step No. of H VCO is "4".
2-17: SUB SHARPNESS
1.
2.
3.
4.
Receive the monoscope pattern.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
select "SHARPNESS".
Check if the step No. of SHARPNESS is "40".
Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 1, 2.
2-18: VERTICAL LINEALITY
1.
2.
3.
Receive the monoscope pattern.
Using the remote control, set the brightness and
contrast, to normal position.
Adjust the VR401 of the OVER SCAN on upside and
downside becomes minimum.
2-19: E-E LEVEL
1.
2.
3. Receive the color bar pattern. (Audio Video Input)
Connect the oscilloscope to TP4201.
Check if the VIDEO OUTPUT LEVEL is 1 ± 0.2Vp-p.
(Refer to Fig. 2-5)
Fig. 2-5
1.0Vp-p
0%
Fig. 2-3
White 0%
White 100%
100%
Red Level
110 ± 10%