Sony SUHS1, VPLHS1FP Service Knowhow, After Replacing the Prism Block, After Replacing the Board

3-4. Service Knowhow

3-4-1. After Replacing the Prism Block

1.Perform Section “3-2. V-COM Adjustment.”

2.Perform the Gamma data writing of the Prism Block.

3.Perform Section “3-5. White Balance Adjustment on Servicing.”

3-4-2. After Replacing the Board

.Refer to the cross table shown on right.

.There are no need to perform the adjustment when the board other than the Q board or C board had been replaced.

1) When Replacing the Q Board

When the data before replacement can be read properly

1.Make a note of the data before replacement. After replacement, write the data into the new board with service mode.

2.If the white balance is extremely deteriorated, perform the white balance adjustment (Refer to Section 3-5.).

When the data before replacement cannot be read

1.Perform Section “3-2. V-COM Adjustment.”

2.Perform Section “3-5. White Balance Adjustment on Servicing.”

2) When Replacing the C Board

1.Before replacement, unsolder the IC305 from the replaced C board and then mount it to the new board.

2.Perform Section “3-2. V-COM Adjustment.”

3.If the white balance is extremely deteriorated, perform the white balance adjustment (Refer to Section 3-5.).

3) When Replacing the Other Board

There are no need to perform the adjustment.

3-6

Cross Table of Board Replacement

		Board Name
Device Name	Item Name	BA	C
P.DRV	VCOM (R)	*	O
	VCOM (G)	*	O
	VCOM (B)	*	O
VAMP	CONT (E)	*	O
	SUB CON R (E)	*	O
	SUB CON B (E)	*	O
W/B ADJUST
INPUT-A HIGH	GAIN R	*	O
	GAIN G	*	O
	GAIN B	*	O
	BIAS R	*	O
	BIAS G	*	O
	BIAS B	*	O
INPUT-A LOW	GAIN R	*	O
	GAIN G	*	O
	GAIN B	*	O
	BIAS R	*	O
	BIAS G	*	O
	BIAS B	*	O
INPUT-A HIGH	GAIN R	*	O
	GAIN G	*	O
	GAIN B	*	O
	BIAS R	*	O
	BIAS G	*	O
	BIAS B	*	O
INPUT-A MID	GAIN R	*	O
	GAIN G	*	O
	GAIN B	*	O
	BIAS R	*	O
	BIAS G	*	O
	BIAS B	*	O
VIDEO MID	GAIN R	*	O
	GAIN G	*	O
	GAIN B	*	O
	BIAS R	*	O
	BIAS G	*	O
	BIAS B	*	O
VIDEO LOW	GAIN R	*	O
	GAIN G	*	O
	GAIN B	*	O
	BIAS R	*	O
	BIAS G	*	O
	BIAS B	*	O

*: When down the data before replacement, and then write in the data after the board replacement.

O: Need adjustment Value : See description.

VPL-HS1