TOSHIBA VTD2031
Manual de Servicio

ELECTRICAL ADJUSTMENTS
2-4: FOCUS 1. Receive a broadcast. 2. Turn the Focus Volume fully counterclockwise once. 3. Adjust the Focus Volume until picture is distinct. 2-5: HORIZONTAL POSITION 1. Receive the monoscope pattern 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 (08) on the remote control to select "H POSI 50". 4. Press the LEFT/RIGHT button on the remote control until the SHIFT quantity of the OVER SCAN on right and left becomes minimum. 5. Receive the cross hatch signal of NTSC. (Audio Video Input) 6. Press the AV button on the remote control to set to the AV mode. 7. Activate the adjustment mode display of Fig. 1-1 and press the channel button (39) on the remote control to select "H POSI 60". 8. Press the LEFT/RIGHT button on the remote control until the SHIFT quantity of the OVER SCAN on right and left becomes minimum. 2-6: VERTICAL POSITION NOTE: Adjust after performing adjustments in section 2-5. 1. Receive the monoscope pattern 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 (09) on the remote control to select "V POSI (50)". 4. Check if the step No. V. POSI (50) is "10". 5. Adjust the VR402 until the horizontal line becomes fit to the notch of the shadow mask. 6. Receive the cross hatch signal of NTSC. (Audio Video Input) 7. Press the AV button on the remote control to set to the AV mode. 8. Using the remote control, set the brightness and contrast to normal position. 9. Activate the adjustment mode display of Fig. 1-1 and press the channel button (10) on the remote control to select "V POSI (60)". 10. Check if the step No. V. POSI (60) is "00". 2-7: VERTICAL SIZE NOTE: Adjust after performing adjustments in section 2-6. 1. Receive the monoscope pattern 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 (11) on the remote control to select "V SIZE 50". 4. Adjust by using the LEFT/RIGHT button on the remote control so that the Up/Down OVER SCAN Quantity becomes equal to the Right/Left OVER SCAN Quantity. 5. Receive a broadcast and check if the picture is normal. 6. Receive the cross hatch signal of NTSC. (Audio Video Input) 7. Press the AV button on the remote control to set to the AV mode. 8. Activate the adjustment mode display of Fig. 1-1 and press the channel button (12) on the remote control to select "V SIZE 60". 9. Adjust by using the LEFT/RIGHT button on the remote control so that the Up/Down OVER SCAN Quantity becomes equal to the Right/Left OVER SCAN Quantity. 10. Receive a broadcast and check if the picture is normal. 2-8: VERTICAL LINEARITY NOTE: Adjust after performing adjustments in section 2-7. After the adjustment of Vertical Linearity, reconfirm the Vertical Position and Vertical Size adjustments. 1. Receive the monoscope pattern from the Pattern Generator. 2. Using the remote control, set the brightness and contrast to normal position. 3. Adjust the VR401 until the SHIFT quantity of the OVER SCAN on upside and downside becomes minimum. 2-9: OSD HORIZONTAL 1. Using the remote control, set the brightness and contrast to normal position. 2. Activate the adjustment mode display of Fig. 1-1 and press the channel button (35) on the remote control to select "H POSI OSD". 3. Press the LEFT/RIGHT button on the remote control until the difference of A and B becomes minimum. (Refer to Fig. 2-1)

35 36 37 38 39 00

H POSI OSD V POSI OSD H POSI TEXT V POSI TEXT H POSI 60 CUT OFF 9- EXT

129 57 125 57 42

VCO Status XXX

-

A

B Fig. 2-1

D-2