Service Know-How; When The Prism Block Is Replaced; When The Board Is Replaced; White Balance Adjustment - Sony VPL-FX52 Service Manual

2-4. Service Know-How

2-4-1. When the Prism Block is Replaced

1. Perform the V COM adjustment. (Refer to Section "2-
2. VCOM Adjustment".)
2. Write the GAMMA data of the prism block.
3. Perform the white balance adjustment. (Refer to
Section "2-5. White Balance Adjustment".)

2-4-2. When the Board is Replaced

When the C Board is Replaced
1. Install IC3207 of the C board before replacement, into
the new C board.
2. Enter the Factory Mode.
3. Perform the V COM adjustment. (Refer to Section "2-
2. VCOM Adjustment".)
4. If the white balance is significantly poor, perform the
white balance adjustment. . (Refer to Section "2-5.

White Balance Adjustment".)

When the QA, QB, or B Board is Replaced
1. If the white balance is significantly poor, perform the
white balance adjustment. . (Refer to Section "2-5.
White Balance Adjustment".)
VPL-FX52/FX52L
2-5. White Balance Adjustment
Preparation before adjustment
1. Input the 100 IRE flat field XGA60 signal to the
INPUT-C connector and allow the warm-up of 10
minutes aging at a minimum.
2. Enter the Service Mode.
Press the keys in the following order.
[ENTER] → [ENTER] → ↑ → ↓ → [ENTER].
The message [Do you want to enter the Service Mode?
Yes : ↑ No : ↓] appears.
Select [Yes : ↑].
[Supplementary information: How to Exit the
Service Mode]
Perform the step 2 KEY operation.
The message [Do you want to return to the User Mode?
Yes : ↑ No : ↓] appears.
Select [Yes : ↑].

2-5-1. LOW Mode of INPUT-C Computer

1. Input the 100 IRE flat field XGA60 signal to the
INPUT-C connector, and set the GAIN and BIAS for
the white balance LOW mode to the following values,
then SAVE.
GAIN
RED 160
GREEN 140
BLUE 160
BIAS
85
85
85
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