Memorex MVDT2002SM Service Manual page 39

(TV SECTION)
2-2: CONSTANT VOLTAGE
1. Place the set in AV MODE without signal.
2. Using the remote control, set the brightness and contrast
to normal position.
3. Connect the digital voltmeter to TP401.
4. Adjust the VR1701 until the digital voltmeter is 114
2-3: CUT OFF
1. Adjust the unit to the following settings.
BRI.CENTER=127, CONT MAX=100,R.BIAS=127,
G.BIAS=127, B.BIAS=127, R.DRV=63, G.DRV=07,
B.DRV=63.
2. Place the set in Aging Test for more than 15 minutes.
3. Place the set in AV MODE without signal.
4. Using the remote control, set the brightness and contrast
to normal position.
5. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (02) on the remote control to
select "CUT OFF".
6. Adjust the Screen Volume until a dim raster is obtained.
2-4: WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
1. Place the set in Aging Test for more than 15 minutes.
2. Receive the gray scale pattern from the Pattern
Generator with Burst On.
3. Using the remote control, set the brightness and contrast
to normal position.
4. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (11) on the remote control to
select "R.BIAS".
5. Press the CH. UP/DOWN button on the remote control to
select the "R.BIAS", "G.BIAS", "B.BIAS", "R.DRV",
"B.DRV" or "G.DRV".
6. Adjust the LEFT/RIGHT button on the remote control to
whiten the R.BIAS, G.BIAS, B.BIAS, R.DRV, B.DRV, and
G.DRV at each step tone sections equally.
7. Perform the above adjustments 5 and 6 until the white
color is achieved.
2-5: HORIZONTAL POSITION
1. Receive the monoscope pattern.
2. Using the remote control, set the brightness and contrast
to normal position.
3. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (03) on the remote control to
select "H.POSI".
4. Press the LEFT/RIGHT button on the remote control until
the SHIFT quantity of the OVER SCAN on right and left
becomes minimum.
ELECTRICAL ADJUSTMENTS
0.5V.
D3-2
2-6: FOCUS
1. Receive the monoscope pattern.
2. Turn the Focus Volume fully counterclockwise once.
3. Adjust the Focus Volume until picture is distinct.
2-7: VERTICAL SIZE
1. Receive the monoscope pattern.
2. Using the remote control, set the brightness and
contrast to normal position.
3. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (06) on the remote control to
select "V.SIZE".
4. Press the LEFT/RIGHT button on the remote control
until the Up/Down OVER SCAN Quantity becomes equal
to the Right/Left OVER SCAN Quantity.
2-8: VERTICAL LINEARITY
NOTE: Adjust after performing adjustments in section 2-5.
After the adjustment of Vertical Linearity, reconfirm
the Vertical Position and Vertical Size adjustments.
1. Receive the monoscope pattern.
2. Using the remote control, set the brightness and contrast
to normal position.
3. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (08) on the remote control to
select "V.LIN".
4. Press the LEFT/RIGHT button on the remote control
until the SHIFT quantity of the OVER SCAN on right and
left becomes minimum.
2-9: BRIGHT CENTER
1. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
select "BRI CENT".
2. Press the LEFT/RIGHT button on the remote control until
the white 10% is starting to be visible.
3. Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 1, 2.
4. Press the DVD button on the remote control to set to the
DVD mode.
5. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
select "BRI CENT".
6. Press the LEFT/RIGHT button on the remote control to
set the same step numbers as the AV mode.