Toshiba MD14F51 Service Manual page 29

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.
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 (16) on the remote control to
select "G DRIVE".
5. Press the CH. UP/DOWN button on the remote control to
select the "R CUT OFF", "G CUT OFF", "B CUT OFF", "R
DRIVE" or "B DRIVE".
6. Adjust the RIGHT/LEFT button on the remote control to
whiten the R CUT OFF, G CUT OFF, B CUT OFF, R
DRIVE, and B DRIVE 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 (04) on the remote control to
select "HPOSI".
4. Press the RIGHT/LEFT button on the remote control until
the SHIFT quantity of the OVER SCAN on right and left
becomes minimum.
2-6: VERTICAL 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 (08) on the remote control to
select "VPOSI".
4. Check if the step No. V POSI is "02".
5. Adjust the VR401 until the horizontal line becomes fit
to notch of the shadow mask.
(Refer to Fig. 2-1)
ELECTRICAL ADJUSTMENTS
horizontal line
Notch
Shadow mask
Fig. 2-1
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 (07) on the remote control to
select "VSIZE".
4. Press the RIGHT/LEFT button on the remote control until
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.
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.
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 "VLIN".
4. Press the RIGHT/LEFT button on the remote control until
the SHIFT quantity of the OVER SCAN on upside and
downside becomes minimum.
2-9: SEPARATION
1. Set the multi-sound signal generator L-ch=1KHz, R-ch
=Non input and receive the RF signal.
2. Connect the oscilloscope to the SP351 code.
3. Press the AUDIO SELECT button on the remote control
to set to the stereo mode.
4. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (64) on the remote control to
select "SEPAL".
5. Press the RIGHT/LEFT button on the remote control to
adjust it until the R-ch output becomes minimum.
6. Press the CH UP button 1 time to set to "SEPAH" mode.
7. Press the RIGHT/LEFT button on the remote control to
adjust it until the R-ch output becomes minimum.
8. Set the multi-sound signal generator L-ch=Non input,
R-ch=1KHz and receive the RF signal.
9. Connect the oscilloscope to the SP352 code. Then
perform the above adjustments 3~7.
D-2