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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.
Содержание LV-7355J
Страница 9: ...Part 1 General Information ...
Страница 22: ...Part 2 Repair Information ...
Страница 43: ...Part 3 Adjustment ...
Страница 65: ...Part 4 Troubleshooting ...
Страница 82: ...Part 4 Troubleshooting 4 17 BA7078AF Selector IC6241 CXA2101AQ RGB Matrix IC4101 ...
Страница 83: ...Part 4 Troubleshooting 4 18 CXD2064Q Digital Comb Filter IC2101 L3E01031 Level Shift IC3501 IC3531 IC3561 ...
Страница 85: ...Part 4 Troubleshooting 4 20 ML60851 USB I F IC9801 M62393 D A IC2571 ...
Страница 86: ...Part 4 Troubleshooting 4 21 TB1274AF Video Decoder IC1101 TA1318N AFC Detector IC6171 ...
Страница 87: ...Part 4 Troubleshooting 4 22 FA7612CA PWC Controller IC65A IC671 IC681 STR Z2156 Switching Controller IC631 ...
Страница 88: ...Part 5 Parts Catalog ...
Страница 89: ......
Страница 107: ...Part 6 Electrical Diagrams ...
Страница 117: ......