-27-
After replacing the Power Board, PF.C. Board, readjust
the Output voltage adjustment as follows.
1. Connect a digital voltmeter to pins 1 (+) and 3 (-) of
K6C.
2. Adjust the voltage by using VR01 as following.
AC Input
Reading
230V 370V
±2V
120V
320V ±2V
Caution:
Be sure to connect the lamp when taking this adjust-
ment.
OUTPUT VOLTAGE ADJUSTMENT
●
Circuit Adjustments
CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the follow-
ing adjustments except requiring the readjustments in servicing otherwise it may cause loss of perfor-
mance and product safety.
[Adjustment Condition]
●
Input signal
Video signal ..................1.0Vp-p/75
Ω
terminated, 16 steps gray scale or color bar pattern
Computer signal ............0.7Vp-p/75
Ω
terminated, 16 steps gray scale pattern
MCI signal * ..................16 steps gray scale pattern from PC Card
●
Picture control mode ---------- “NORMAL” mode unless otherwise noted.
Note:
* Please refer to “Service Adjustment Menu Operation” for entering to the service mode and adjusting the service
data.
* It is not available the MCI mode for model which does not provide the PC Card slot.
Electrical Adjustments
Presetting
1. Receive the 16-step grey scale video signal.
2. Set to VIDEO mode.
[R-PEDESTAL ADJUSTMENT]
3. Connect an oscilloscope to test point “TP221R” (+)
and chassis ground (-).
4. Enter to the service mode, select item no. “27” and
change data value to adjust the pedestal level and
black level to be same level.
[G-PEDESTAL ADJUSTMENT]
5. Connect an oscilloscope to test point “TP221G” (+)
and chassis ground (-).
6. Select item no. “28” and change data value to adjust
the pedestal level and black level to be same level.
[B-PEDESTAL ADJUSTMENT]
7. Connect an oscilloscope to test point “TP221B” (+)
and chassis ground (-).
8. Select item no. “29” and change data value to adjust
the pedestal level and black level to be same level.
Pedestal level = Black level
PEDESTAL ADJUSTMENT
Содержание PLC-SU20B
Страница 45: ... 45 TPDVS V SYNC TPDHS H SYNC TP3571 NRS ...
Страница 49: ... 49 IC Block Diagrams CXA2111R LCD Driver IC401 CXA2112R Sample Hold IC501 IC531 IC561 ...
Страница 50: ... 50 IC Block Diagrams CXD3503R White Uniformity Compensation IC471 FA5331M Power Factor Control IC01 ...
Страница 51: ... 51 IC Block Diagrams IDT71V016S RAM IC805 LA7217M Sync Separator IC6131 ...
Страница 52: ... 52 IC Block Diagrams LB1641 Motor Drive IC5501 IC5551 LC4105V Buffer IC3501 IC3521 IC3541 ...
Страница 53: ... 53 IC Block Diagrams M62358FP DAC IC431 MB40988PFQ D A COnverter IC2200 ...
Страница 54: ... 54 IC Block Diagrams MC14538BF IC7201 MPC948FA Clock Driver IC1302 ...
Страница 55: ... 55 IC Block Diagrams PW264 System Control Scan Converter IC301 STR Z2156 Power SWitching Control IC631 ...
Страница 58: ... 58 TDA9178T Picture Improvement IC121 IC Block Diagrams ...
Страница 81: ...Ref No Part No Description Ref No Part No Description 81 Electrical Parts List ...
Страница 84: ...Mechanical Parts List 84 CHASSIS PARTS 24 45 24 72 73 71 57 45 45 45 46 46 46 46 51 51 51 ...
Страница 85: ... 85 Mechanical Parts List 32 59 33 58 25 34 28 60 27 45 45 45 45 45 45 ...
Страница 88: ...Feb 2000 1300 SI Printed in Japan SANYO Electric Co Ltd ...
