Toshiba MV20FL4C Service Manual page 33

2-13: VERTICAL SHIFT
NOTE: Adjust after performing adjustments in section 2-12.
1. Receive the center cross signal from the Pattern
Generator.
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 (07) on the remote control to
select "V SHIFT".
4. Please the VOL. UP/DOWN button on the remote
control until the horizontal line becomes fit to the notch
of the shadow mask.
2-14: SUB BRIGHTNESS
1. Receive the monoscope pattern. (RF Input)
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 (13) on the remote control to
select "BRIGHTNESS".
4. Press the VOL. UP/DOWN button on the remote
control until the white 10% is starting to be visible.
5. Receive the monoscope pattern. (Audio Video Input)
6. Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 2~4.
2-15: SUB CONTRAST
1. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (14) on the remote control to
select "CONTRAST".
2. Press the VOL. UP/DOWN button on the remote
control until the contrast step No. becomes "85".
3. Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 1~2.
2-16: SUB TINT
1. Receive the color bar pattern. (RF Input)
2. Using the remote control, set the brightness, contrast,
color and tint to normal position.
3. Connect the oscilloscope to TP806.
4. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (16) on the remote control to
select "TINT".
5. Press the VOL. UP/DOWN button on the remote
control until the section "A" becomes a straight line.
(Refer to Fig. 2-4)
6. Receive the color bar pattern. (Audio Video Input)
7. Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 2~5.
White 100%
ELECTRICAL ADJUSTMENTS
White 0%
"A"
Fig. 2-4
2-17: SUB COLOR
1. Receive the color bar pattern. (RF Input)
2. Using the remote control, set the brightness, contrast,
color and tint to normal position.
3. Connect the oscilloscope to TP804.
4. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (15) on the remote control to
select "COLOR".
5. Adjust the VOLTS RANGE VARIABLE knob of the
oscilloscope until the range between white 100% and
0% is set to 4 scales on the screen of the oscilloscope.
6. Press the VOL. UP/DOWN button on the remote
control until the red color level is adjusted to 110 ± 5%
of the white level. (Refer to Fig. 2-5)
7. Receive the color bar pattern. (Audio Video Input)
8. Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 2~6.
2-18: PIN CUSHION (PCC)
1. Receive the color bar pattern.
2. Using the remote control, set the brightness and
contrast to normal position.
3. Adjust the VR402 until the right and left vertical line
becomes straight.
2-19: SUB SHARPNESS
1. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
select "SHARPNESS".
2. Check if the step No. of SHARPNESS is "40".
3. Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 1~2.
2-20: H VCO
1. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (04) on the remote control to
select "H VCO".
2. Check if the step No. of H VCO is "4".
D2-3
White 0%
0%
100%
White 100%
Red Level
Fig. 2-5