Technicolor - Thomson LDK 20(S) technical manual Setting-up, Black Shading Correction

Sync./Shading Board

Setting-up

Note: Sync./Shading board must be adjusted in combination with Video Processor 1 Board.

1.Put Sync./Shading Board on a service extender.

2.Put Video Processor 1 Board on a service extender and remove jumpers 7, 9, 11, 13, 17 and 19 from connector B of the service extender to interrupt the input from the front and jumpers 6, 12 and 15 to interrupt the black shading correction.

3.Short circuit the input to video processor 1 by connecting the following jumpers on connector B of the service

extender:	B7 to B9, B11 to B13,		B17 to B19
4. Recall Factory Standard File on MCP or OCP and close iris. On MCP set:
OPERATE MENU		Knee	:	Off
		Contour	:	Off
		Gamma sel.	:	Lin.
		Blk. Str.	:	Off
		Filter	:	Cap
		Auto Iris	:	Off
SETUP 1 MENU		Flare	:	Off
		White clip	:	Off
		Sawtooth	:	Off
SETUP 2 MENU		Soft cont.	:	Off
SETUP 3 MENU		Skin cont.	:	Off
SETUP 4 MENU		Asp.Ratio	:	4:3
SETUP 5 MENU		Matrix sel	:	1:1
MAINT. 1 MENU		Wh. shading	:	Off	and User level :	4

Black Shading Correction

1.Carry out this adjustment in an ambient temperature of 20°C / 25°C.

2.On Sync./Shading Board set the DC potentiometers ZR265(R), ZR465(G) and ZR665(B) fully clockwise.

3.On Sync./Shading Board set the Edge potentiometers ZR237(R), ZR437(G) and ZR637(B) fully counterclockwise.

4.On Sync./Shading Board set the Pulse Comp. potentiometers ZR266(R), ZR466(G) and ZR666(B) fully counterclockwise.

5.On Sync./Shading Board set Horizontal Sawtooth potentiometers ZR236(R), ZR436(G) and ZR636(B) in their midposition.

6.On Sync./Shading Board adjust the horizontal sawtooth potentiometers for no sawtooth information (measure on Video Processor 1 Board).

Measure at:

VP1

X55-12 (R)

X55-6 (G)

X55-15 (B)

Adjust with:

Sync./Shad.

ZR263 (R)

ZR463 (G)

ZR663 (B)

Required result:

minimum

horizontal

spike

information

7. Adjust video level equal to blanking DC level.

Measure at:	Adjust with:	Required result:
VP1	VP1
X55-12 (R)	ZR211 (R)
X55-6 (G)	ZR411 (G)
X55-15 (B)	ZR611 (B)

Correct:

Adjustments Technical Manual LDK 20(S) - Studio Camera 4-27