Durabrand DBTV1300 Service Manual page 11

2-6: HORIZONTAL PHASE
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 (05) on the remote control to
select "H PHASE".
4. Press the VOL. UP/DOWN button on the remote
control until the SHIFT quantity of the OVER SCAN on
right and left becomes minimum.
2-7: VERTICAL SIZE
NOTE: Adjust after performing adjustments in section 2-6
1. Receive the crosshatch signal from the Pattern
Generator.
2. Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 1-1 and
3.
press the channel button (06) on the remote control to
select "V SIZE".
4. Press the VOL. UP/DOWN button on the remote control
until the rectangle on the center of the screen becomes
square.
Receive a broadcast and check if the picture is normal.
5.
2-8: VERTICAL SHIFT
NOTE: Adjust after performing adjustments in section 2-7
1.
Receive the crosshatch 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. Press the VOL. UP/DOWN button on the remote
control until the horizontal line becomes fit to the notch
of the shadow mask.
ELECTRICAL ADJUSTMENTS
Fig. 2-1
0%
110%
100%
Fig. 2-2
2-9: OSD HORIZONTAL
1. Activate the adjustment mode display of Fig. 1-1.
2. Press the VOL. UP/DOWN button on the remote
control until the difference of A and B becomes
minimum. (Refer to Fig. 2-3)
A
2-10: VIF VCO
1. Place the set with Aging Test for more than 10 minutes.
2. Receive an 80dB monoscope pattern.
3. Connect the digital voltmeter between the pin 5 of
CP601 and the GND.
Activate the adjustment mode display of Fig. 1-1 and
4.
press the channel button (03) on the remote control to
select "VIF VCO".
5. Press the VOL. UP/DOWN button on the remote control
until the digital voltmeter is 2.5V.
2-11: CONSTANT VOLTAGE
1.
Using the remote control, set the brightness and
contrast to normal position.
2. Connect the digital voltmeter to TP401.
3.
Set condition is AV MODE without signal.
4.
Press the VOL. UP/DOWN button on the remote
control until the Adjust the VR501 until the digital
voltmeter is 132 ± 1V.
D1-2
TV
00 OSD 15
B
Fig. 2-3