Aiwa VX-T2170 Service Manual page 30

Integrated color tv/video cassette recorder
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4-15: SUB COLOR (TV)
1.
Receive the color bar pattern (RF Input).
2.
Connect the oscilloscope to TP801.
3.
Activate the adjustment mode display of Fig. 4-3 and
press the channel button (3) on the remote control.
4.
Adjust the VOLTS RANGE VARIABLE knob of the
oscilloscope until the range between white 100% and
0% is set to 4 scales on the screen of the oscilloscope.
5.
Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 80% of the white
level. (Refer to Fig. 4-8)
4-16: SUB COLOR (AV)
1.
Receive the color bar pattern (Audio Video Input).
2.
Connect the oscilloscope to TP801.
3.
Activate the adjustment mode display of Fig. 4-3 and
press the channel button (3) on the remote control.
4.
Adjust the VOLTS RANGE VARIABLE knob of the
oscilloscope until the range between white 100% and
0% is set to 4 scales on the screen of the oscilloscope.
5.
Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 80% of the white
level. (Refer to Fig. 4-8)
4-17: SUB TINT (AV)
1.
Receive the NTSC rainbow pattern (Audio Video Input).
2.
Connect the oscilloscope to TP803.
3.
Activate the adjustment mode display of Fig. 4-3 and
press the channel button (4) on the remote control.
4.
Press the VOL. UP/DOWN button on the remote control
until the waveform becomes as shown in Fig. 4-9.
ELECTRICAL ADJUSTMENTS
0%
80%
100%
Fig. 4-8
Fig. 4-9
D3-4
4-18: CONSTANT VOLTAGE
1.
Set to the AV mode. (No input for AV)
2.
Connect the DC voltmeter to TP401.
3.
Adjust the VR502 until the DC voltmeter is 119
4-19: V. S-COR
1.
Receive the monochrome pattern.
2.
Activate the adjustment mode display of Fig. 4-5 and
press the channel button (5) on the remote control.
3.
Press the VOL. UP/DOWN button on the remote control
until the V. S-COR level is set to the "70".
4-20: SUB SHARPNESS (TV)
1.
Receive the monochrome pattern (RF Input).
2.
Activate the adjustment mode display of Fig. 4-3 and
press the channel button (5) on the remote control.
3.
Press the VOL. UP/DOWN button on the remote control
until the SHARPNESS level is set to the "15".
4-21: SUB SHARPNESS (AV)
1.
Receive the monochrome pattern (Audio Video Input).
2.
Activate the adjustment mode display of Fig. 4-3 and
press the channel button (5) on the remote control.
3.
Press the VOL. UP/DOWN button on the remote control
until the SHARPNESS level is set to the "15".
4-22: SECAM DET
1.
Receive the SECAM color bar pattern.
2.
Set the color system to SECAM position.
3.
Adjust the items 1 and 2 of Fig. 4-4 until the white part
of the pattern is not changed even though you turn color
control from minimum to maximum.
0.5V.

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