EIKI - PROJECTOR SERVICE HELP 2

EIKI - LC-XG110 | LC-XG210 | MJ7-XG11000 | MH7-XG21000 


ELECTRICAL ADJUSTMENTS

• Circuit Adjustments.

Each circuit has been made by the fine adjustment at the Factory.  Do not attempt to adjust the following adjustments except requiring re-adjustments in servicing otherwise it may cause loss of performance and product safety.

Refer Service Adjustment Menu Operation discussed earlier post here to enter into service mode, where ever necessary.

• Fan Voltage Adjustment.

1. Set the Lamp Mode to "ECO" with Menu function.
2. Enter the Service Mode and select group number [11] and item number [5].  Set data value to "1".
3. Connect a digital volt meter to test point 'TPFAN1'(+) and Chassis ground (-Ve).
4. Select Group number [11]  and item number [86] and adjust the voltage to be [4.5+|-o.1Vdc, by changing the data value.  Select item number [87], and adjust the voltage to be 13.8+/- 0.1Vdc by changing the data value.
5. Connect a digital volt meter to test point 'TPFAN2'(+)  and Chassis ground.
6. Select item number [88] and adjust the voltage to be 4.5Vdc by changing the data value.  Select item number [89], and adjust the voltage to be 13.8Vdc, by adjusting the data value.
7. Connect the digital volt meter to test point 'TPFAN3' and Chassis ground.  
8. Select item number [90] and adjust the voltage to be 4.5Vdc, by changing the data value.  Select item number [91] and adjust the voltage to be 13.8Vdc, by changing the data value.
9. Select Group number [11] and item number [5].  Set data value to [0], and set the lamp mode to 'Normal' with the Menu function. 

• Video Center Adjustment

1. Receive a 16 step gray scale computer signal with Computer1[Analog RGB Mode].
2. Enter the service menu.
3. Connect digital voltmeter  to test point TP531+ve and chassis ground.
4. Select Group number [5], item number [0], and adjust the voltage to be 7.50Vdc by changing the data value.  
5. Connect the digital voltmeter to test point TP501+ve and Chassis ground.
6. Select item number [1], and adjust the voltage to be 7.5Vdc by changing the data value.  
7. Connect the digital voltmeter to test point TP561+ve and Chassis ground.
8. Select item number [2] and adjust the voltage to be 7.5Vdc by changing the data value.

There are so many circuit adjustments more, which cannot be done without proper testing equipments,like video signal generator and oscilloscope.  Never touch to any of these adjustments, or adjust the data values there, if you find some.  it will be very difficult to set right, if any of these data values are changed.