JVC AV-20FD22 Service Manual page 7

2-14: CORNER CORR BOTTOM
1. Receive the crosshatch signal from the Pattern
Generator.
Using the remote control, set the brightness and
2.
contrast to normal position.
3. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (32) on the remote control to
select "CNRB".
4. Press the VOL. UP/DOWN button on the remote control
until the bottom section of the both ends vertical lines
are straight.
2-15: OSD HORIZONTAL
1. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (33) on the remote control to
select "OSD".
2. Press the VOL. UP/DOWN button on the remote control
until the difference of A and B becomes minimum.
(Refer to Fig. 2-1)
33 OSD
15
A
2-16: LEVEL
1. Receive the VHF HIGH (70dB).
2. Connect the AC voltmeter to TP901.
3. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (69) on the remote control to
select "LVL".
4. Press the VOL. UP/DOWN button on the remote control
until the AC voltmeter is 75 ± 2mV.
2-17: SEPARATION L/H
1. Receive the stereo signal (L=2KHz, R=400Hz).
Connect the AC voltmeter to AUDIO OUT JACK though
2.
stereo filter (L=400Hz, R=2KHz).
Press the AUDIO button on the remote control to set to
3.
the STEREO mode.
Activate the adjustment mode display of Fig. 1-1 and
4.
press the channel button (70) on the remote control to
select "SEPAL".
5. Press the VOL. UP/DOWN button on the remote control
until the output of L-CH and R-CH become minimum.
Press the CH UP button once the set to "SEPAH" mode.
6.
Press the VOL. UP/DOWN button on the remote control
7.
until the output of L-CH and R-CH become minimum.
8. Press the CH DOWN button once the set to "SEPAL"
mode.
Repeat step 5 to step 8 several times.
9.
The output difference of the between with Filter and
without Filter should be more than 20dB for both L and R.
ELECTRICAL ADJUSTMENTS
B
Fig. 2-1
2-18: SUB BRIGHT CENTER
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 (06) on the remote control to
select "BRTC".
4.
Press the VOL. UP/DOWN button on the remote control
until the white 15% is starting to be visible
5.
Receive the monoscope pattern. (Audio Video Input)
6.
Press the INPUT button on the remote control to set to
the AV mode.
7. Using the remote control, set the brightness and
contrast to normal position.
8.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (37) on the remote control to
select "BRTCA".
9. Press the VOL. UP/DOWN button on the remote control
until the white 15% is starting to be visible
10.
Press the TV/DVD button on the remote control to set to
the DVD mode.
11. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (49) on the remote control to
select "BRTCD".
12. Press the VOL. UP/DOWN button on the remote control
to set the same step numbers as the AV.
2-19: SUB CONTRAST MAX
1. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (15) on the remote control to
select "CNTX".
2. Press the VOL. UP/DOWN button on the remote
control until the contrast step No. becomes "6F"
3. Press the INPUT button on the remote control to set to
the AV mode.
4. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (46) on the remote control to
select "CNTXA".
5. Press the VOL. UP/DOWN button on the remote
control until the contrast step No. becomes "71"
6. Press the TV/DVD button on the remote control to set
to the DVD mode.
Activate the adjustment mode display of Fig. 1-1 and
7.
press the channel button (58) on the remote control to
select "CNTXD".
8. Press the VOL. UP/DOWN button on the remote
control until the contrast step No. becomes "71"
AV-20FD22
15