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2. ELECTRICAL ADJUSTMENTS
The each circuit has been made by the fine adjustment at factory. Do
not attempt to adjust the following adjustments except requiring the
CAUTION
readjustments in servicing, otherwise it may cause loss of performance
and product safety.
[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.
Please refer to "Service Adjustment Menu Operation" for entering to the
CAUTION
service mode and adjusting the service data.
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
230V
370V ± 2V
100V
320V ± 2V
CAUTION
Be sure to connect the lamp when taking this adjustment.
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.
Reading
3-9
Part 3: Adjustment
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