Sanyo PLC-EF10E Service Manual page 32

Electrical Adjustments
VIDEO ADJUSTMENT-[CG]
Presetting
1. Receive the 16-step gray scale computer signal.
2. Set to COMPUTER mode.
[G-VIDEO ADJUSTMENT-1]
3. Connect an oscilloscope to test point "TP2512" (+)
and chassis ground (-).
4. Select Data no. "011" and change data value (Refer to
"IIC data adjustment ") to adjust "a" to be 4.0
±0.05Vp-p.
5. Select Data no. "012" and change data value (Refer to
"IIC data adjustment ") to adjust "b" to be 2.40
±0.05Vp-p.
[R-VIDEO ADJUSTMENT-1]
6. Connect an oscilloscope to test point "TP2511" (+)
and chassis ground (-).
7. Select Data no. "013" and change data value (Refer to
"IIC data adjustment ") to adjust "a" to be 4.0
±0.05Vp-p.
8. Select Data no. "014" and change data value (Refer to
"IIC data adjustment ") to adjust "b" to be 2.40
±0.05Vp-p.
[B-VIDEO ADJUSTMENT-1]
9. Connect an oscilloscope to test point "TP2513" (+)
and chassis ground (-).
10. Select Data no. "015" and change data value (Refer
to "IIC data adjustment ") to adjust "a" to be 4.0
±0.05Vp-p.
11. Select Data no. "016" and change data value (Refer
to "IIC data adjustment ") to adjust "b" to be 2.40
±0.05Vp-p.
white level
(b)
white level
(a)
black level
VIDEO ADJUSTMENT-[AV]
Presetting
1. Receive the 16-step gray scale signal.
2. Set to AV mode.
[G-VIDEO ADJUSTMENT-2]
3. Connect an oscilloscope to test point "TP2512" (+)
and chassis ground (-).
4. Select Data no. "017" and change data value (Refer to
"IIC data adjustment ") to adjust "a" to be 4.0
±0.05Vp-p.
5. Select Data no. "018" and change data value (Refer to
"IIC data adjustment ") to adjust "b" to be 2.40
±0.05Vp-p.
[R-VIDEO ADJUSTMENT-2]
6. Connect an oscilloscope to test point "TP2511" (+)
and chassis ground (-).
7. Select Data no. "019" and change data value (Refer to
"IIC data adjustment ") to adjust "a" to be 4.0
±0.05Vp-p.
8. Select Data no. "01A and change data value (Refer to
"IIC data adjustment ") to adjust "b" to be 2.40
±0.05Vp-p.
[B-VIDEO ADJUSTMENT-2]
9. Connect an oscilloscope to test point "TP2513" (+)
and chassis ground (-).
10. Select Data no. "01B" and change data value (Refer
to "IIC data adjustment ") to adjust "a" to be 4.0
±0.05Vp-p.
11. Select Data no. "01C" and change data value (Refer
to "IIC data adjustment ") to adjust "b" to be 2.40
±0.05Vp-p.
(b)
(a)
-32-
white level
white level
black level