Aiwa VX-G143 Service Manual page 29

2-16: SUB SHARPNESS
1. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (4) on the remote control to
select "PICTURE". The Fig. 2-6 appears on the display.
2. Press the channel button (5) on the remote control to
select "SHARPNESS".
3. Check if the step No. of SHARPNESS is "30".
4. Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 1~3.
2-17: TEXT CONTRAST
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 (4) on the remote control to
select "PICTURE". The Fig. 2-6 appears on the display.
3. Press the channel button (6) on the remote control to
select "TEXT CONT".
4. Check if the step No. of TEXT CONT is "25".
2-18: H. BLK
1. 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.
2. Press the channel button (2) on the remote control to
select "H. BLK".
3. Switch the R/L by using the ENTER button on the
remote control and check if the H. BLK step No.
becomes "R2, L4".
2-19: V. S-CORRECTION (V. SC)
1. 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.
2. Press the channel button (6) on the remote control to
select "V. SC 50/60".
3. Check if the step No. of V. SC is "0".
4. Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 1~3.
2-20: V. COMP
1. 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.
2. Press the channel button (7) on the remote control to
select "V. COMP".
3. Check if the step No. of V. COMP is "7".
2-21: E-E LEVEL
1. Receive the color bar pattern. (Audio Video Input)
2. Connect the oscilloscope to TP4501.
Check if the VIDEO OUT LEVEL is 1Vp-p ± 3dB.
3.
2-22: COLOR LEVEL
1. Receive the color bar pattern.
2. Connect the oscilloscope to TP4501.
3. When setting to the Y-LEVEL 100%, check if the
MAGENTA is 45 ± 10%.
ELECTRICAL ADJUSTMENTS
D2-4