Orion MD17 Service Manual page 30

1. RF AGC DELAY
2. VIDEO LEVEL
3. FM LEVEL
4. OSD H
5. CUT OFF
6. AFT
7. REC AGC DELAY
8. VCO
(TV SECTION)
2-4: 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.
Adjust the VR502 until the digital voltmeter is 130 ± 0.5V.
4.
2-5: CUT OFF
1. Place the set with Aging Test for more than 15 minutes.
2. Set condition is AV MODE without signal.
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 (5) on the remote control to
select "OTHERS". The Fig. 2-2 appears on the display.
5. Press the channel button (5) on the remote control to
select "CUT OFF".
6. Adjust the Screen Volume until a dim raster is obtained.
2-6: FOCUS
1. Receive the monoscope pattern.
2. Using the remote control, set the brightness and
contrast to normal position.
3. Turn the Focus Volume fully counterclockwise once.
4. Adjust the Focus Volume until picture is distinct.
2-7: WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
1. Place the set with Aging Test for more than 15 minutes.
Receive the white 100% signal from the Pattern
2.
Generator.
Using the remote control, set the brightness and contrast
3.
to normal position.
4. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (2) on the remote control to
select "WHITE BALANCE". The Fig. 2-3 appears on the
display
Press the channel button (2) on the remote control to
5.
select the "R.BIAS".
Using the PLAY or STOP button on the remote control,
6.
adjust the R.BIAS.
Press the CH. UP/DOWN button on the remote control to
7.
select the "G.BIAS", "B.BIAS", "R.DRIVE", or "B.DRIVE".
Using the PLAY or STOP button on the remote control,
8.
adjust the G.BIAS, B.BIAS, R.DRIVE or B.DRIVE.
Perform the above adjustments 7 and 8 until the white
9.
color is looked like a white.
ELECTRICAL ADJUSTMENTS
0. RETURN
Fig. 2-2
1.
2. R. BIAS
3. G. BIAS
4. B. BIAS
5. R. DRIVE
6.
7. B. DRIVE
8.
2-8: HORIZONTAL POSITION 50
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 (1) on the remote control to
select "H/V". The Fig. 2-4 appears on the display.
4. Press the channel button (1) on the remote control to
select "H. POSI 50/60".
5. Press the PLAY or STOP button on the remote control
until the SHIFT quantity of the OVER SCAN on right and
left becomes minimum.
1. H. POSI 50/60
2.
3. V. SIZE 50/60
4. V. POSI 50/60
5. V. LIN 50/60
6. V. SC 50/60
7.
8. (H. FREQ)
2-9: HORIZONTAL POSITION 60
1. Receive the monoscope pattern. (Audio Video 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 (1) on the remote control to
select "H/V". The Fig. 2-4 appears on the display.
4. Press the channel button (1) on the remote control to
select "H. POSI 50/60".
5. Press the ENTER button once to set to "H. POSI 60"
mode.
6. Press the PLAY or STOP button on the remote control
until the SHIFT quantity of the OVER SCAN on right and
left becomes minimum.
2-10: VERTICAL SIZE 50
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 (1) on the remote control to
select "H/V". The Fig. 2-4 appears on the display.
4. Press the channel button (3) on the remote control to
select "V. SIZE 50/60".
5. Press the PLAY or STOP button on the remote control
until the horizontal over scan is equal to the vertical over
scan.
D2-2
0. RETURN
Fig. 2-3
0. RETURN
Fig. 2-4