Zenith C30W46, Service Manual

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ADJUSTMENT INSTRUCTIONS

(4) Dynamic Convergence (DYC) Adjustment

1. Vertical Line Adjustment : Adjust by moving DY right and

left.

2. Horizontal Line Adjustment : Adjust by moving DY up

and down.

5. White Balance Adjustment

Do screen adjustment first.
For manual adjustment, refer to the following procedure. 

5.1 Test Equipment 

(1) Automatic White Balance meter(Can generate Low/High

light pattern)

(2) White Balance meter(CRT color Analyzer, CA-100)
(3) SVC Remote control for adjustment

5.2 Preliminary steps

(1) Tune the TV set to receive an 100% white pattern.
(2) Do screen adjustment first.

5.3 Adjustment  

(1) White Balance should be adjusted with the SVC remote

control.

(2) Enter into adjustment mode by “INSTART” button and

select RGB W/B ADJ mode with CH

D

, 

E

, VOL

F

,  

G

.          

(3) Adjust the item with CH

D

, 

E

.                      

(4) Adjust the data with VOL

F

, 

G

.                          

(5) Adjustment Procedure

1. Adjust “CONTRAST” and “BRIGHTNESS” so the bright

level is 35Ft_L.           

2. Select GD(G-DRIVE) and adjust Y coordinate in High

Light and select BD(B-DRIVE) and adjust X coordinate
so the color coordinates in High light as to be the values
in Table below.       

3. Adjust “CONTRAST” and “BRIGHTNESS” so the bright

level is 4.5Ft_L.                        

4. Select GC(G-CUTOFF) and adjust Y coordinate in Low

Light and select BC(B-CUTOFF) and adjust X
coordinate so the color coordinates in Low light are as
the values in Table below.

5. Repeat 1 ~ 4 until the color coordinates in High and Low

color satisfies the Table.                                                     

6. Check the adjusted color coordinates with the white

balance meter.                  

6. Focus Adjustment

Adjust after operating the receiver for 15 minuets.                       

6.1 Preliminary steps

(1) Receive Digital Pattern.                                                          
(2) Set Picture condition to “CLEAR”. 

CONTRAST : 100
BRIGHTNESS :  50

CLEAR 

TINT :  0
COLOR  :  50
SHARPNESS :  50

6.2 Adjustment 1

(34”/32”/29” Double Focus Model)

(1) Adjust the lower Focus volume of FBT for the best focus of

vertical line B. 

(2) Adjust the upper Focus volume of FBT for the best focus of

area A.

(3) Repeat above step (1) and (2) for the best overall focus.

6.3 Adjustment 2

(29” Single Focus Model)

Adjust the upper Focus volume for the best focus of horizontal
line A,vertical line B.

7. Sub-Brightness Adjustment 

Do white balance adjustment first.                   

7.1 Preliminary steps

(1) Select “SUB BRIGHT” mode pressing “ADJ” button on the

SVC Remote control. 
(In using “INSTANT” button, select SUB PICTURE
Mode(2150 EX1 ADJ) and then select Sub-BR(SUB-
BRIGHTNESS) adjustment item.)

(2) At this moment the signal is automatically received and

selected. And the picture state is changed to SUB Bright
adjustment.

CONTRAST : 27
BRIGHTNESS :  52

SUB Bright 

TINT :  0

picture state

COLOR  :  0

SHARPNESS :  71
DRP/FI-NE : OFF

7.2 Adjustment 

Adjust until number “2” in <Fig. 4> almost dispears on Gray
Scale of MONO Scope signal by VOL

F

, 

G

.       

Color temperature

X Coordinate

Y Coordinate

288

!

8

282

!

8

10000 K

RGB

W/B

R-DRIV(0-63)

G-DRIV(0-63)

B-DRIV(0-63)

R-CUT0(0-63)

G-CUT0(0-63)

B-CUT0(0-63)

31

25

31

31

25

31

Fix.

Fix.

High Light adj.

Low Light adj.

Menu

Initial Data

Remark

<Fig. 3>

A

B