ELECTRICAL ADJUSTMENTS
2-18: PIP VERTICAL POSITION L
1.Receive the monoscope pattern.
2.Using the remote control, set the brightness and
contrast to normal position.
3.Activate the adjustment mode display of Fig. 1-1 and35mm
press the channel button (42) on the remote control to
select "V. POS L".
4.Press the VOL. UP/DOWN button on the remote
control until the value from the PIP screen frame to the
Shadow mask
shadow mask becomes 20(+5, -0)mm.Fig. 2-7
(Refer to Fig. 2-5)
2-21: PIP R, G, B LEVEL
1.Set condition is TV MODE without signal.
2.Connect the oscilloscope to pin 16 of IC751.
3.Activate the adjustment mode display of Fig. 1-1 and
press the channel button (48) on the remote control to
select "R".
20mm4.Press the VOL. UP/DOWN button on the remote control
until the waveform value becomes 0.9 ? 0.04V.
(Refer to Fig. 2-8)
Shadow mask
Fig. 2-55.Connect the oscilloscope to pin 11 of IC751.
6.Press the CH UP button once to set to "G" mode.
7.Press the VOL. UP/DOWN button on the remote control
2-19: PIP HORIZONTAL POSITION L
until the waveform value becomes 0.9 ? 0.04V.
1.Receive the monoscope pattern.(Refer to Fig. 2-8)
2.Using the remote control, set the brightness and8.Press the VOL. DOWN button on the remote control to
contrast to normal position.decrease the step numbers by 2 steps.
3.Activate the adjustment mode display of Fig. 1-1 and9.Connect the oscilloscope to pin 8 of IC751.
press the channel button (43) on the remote control to10.Press the CH UP button once to set to "B" mode.
select "H. POSI".11.Press the VOL. UP/DOWN button on the remote control
4.Press the VOL. UP/DOWN button on the remoteuntil the waveform value becomes 0.9 ? 0.04V.
control until the value from the PIP screen frame to the(Refer to Fig. 2-8)
shadow mask becomes 35(+5, -0)mm.
(Refer to Fig. 2-6)
Shadow mask
35mm
0.9V
Fig. 2-6
Fig. 2-8
2-20: PIP HORIZONTAL POSITION R
2-22: PIP AFT
1. Receive the monoscope pattern.
1.Place the set with Aging Test for more than 15 minutes.
2. Using the remote control, set the brightness and
2.Receive the VHF HIGH on the PIP screen.
contrast to normal position.
3.Connect the digital voltmeter to the TP052.
3. Activate the adjustment mode display of Fig. 1-1 and
4.Activate the adjustment mode display of Fig. 1-1 and
press the channel button (44) on the remote control to
press the channel button (54) on the remote control to
select "H. POS R".
select OVCO�.
4. Press the VOL. UP/DOWN button on the remote
5.Adjust the L258 until the digital voltmeter is 2.5 ? 0.5V.
control until the value from the PIP screen frame to the
shadow mask becomes 35(+5, -0)mm.
2-23: PIP AGC
(Refer to Fig. 2-7)
1.Place the set with Aging Test for more than 15 minutes.
2.Receive the VHF HIGH (63dB) on the PIP screen.
3.Connect the digital voltmeter to the TP051.
4.Adjust the VR251 until the digital voltmeter is 1.7 ? 0.05V. |
ACEC
