2. ELECTRICAL ADJUSTMENTS
[Before adjustment]
Set the pattern generator (video signal generator) output level to 1 [Vp-p] (75 ohms
terminated) at the video input connector. Set the computer signal generator output level
to 0.7 [Vp-p] (75 ohms terminated) at the computer input connector.
Set Picture control mode to "STANDARD" mode.
Use a 16-step pattern for the adjustments.
2.1 Output Voltage Adjustment
After replacing the power unit and P.F. unit, readjust the output voltage adjustment
as follows.
1. Connect a digital voltmeter to pins 1 (+) and 3 (-) of K6D.
2. Adjust the voltage by using VR611 as follows.
AC Input
Reading
230V 370V ± 2V
100V 320V ± 2V
2.2 Fan Voltage Adjustment (For LV-7350)
1. Set service mode to group no. "11".
[Voltage adjustment at the minimum fan speed]
1. Select Item no. "0" and Data. "1".
2. Select Item no. "1".
3. Connect a digital voltmeter to test point "TP12V1" (+) and chassis ground (-).
4. Change data value and set the digital voltmeter voltage value to 7.5 ± 0.1 V.
5. Select item no. "2".
6. Connect the digital voltmeter to test point "TP12V2" (+) and chassis ground (-).
7. Change data value and set the digital voltmeter voltage value to 9.0 ± 0.1 V.
Part 3: Adjustment
3-9
CAUTION
The each circuit has been made by the fine adjustment at factory. Do
not attempt to adjust the following adjustments except requiring the
readjustments in servicing, otherwise it may cause loss of performance
and product safety.
CAUTION
Be sure to connect the lamp when taking this adjustment.
CAUTION
Please refer to "Service Adjustment Menu Operation" for entering to the
service mode and adjusting the service data.
Summary of Contents for LV-7355J
Page 9: ...Part 1 General Information ...
Page 22: ...Part 2 Repair Information ...
Page 43: ...Part 3 Adjustment ...
Page 65: ...Part 4 Troubleshooting ...
Page 82: ...Part 4 Troubleshooting 4 17 BA7078AF Selector IC6241 CXA2101AQ RGB Matrix IC4101 ...
Page 85: ...Part 4 Troubleshooting 4 20 ML60851 USB I F IC9801 M62393 D A IC2571 ...
Page 86: ...Part 4 Troubleshooting 4 21 TB1274AF Video Decoder IC1101 TA1318N AFC Detector IC6171 ...
Page 88: ...Part 5 Parts Catalog ...
Page 89: ......
Page 107: ...Part 6 Electrical Diagrams ...
Page 117: ......