DOWNLOAD Panasonic CT-34WDM60 Service Manual ↓ Size: 1.4 MB | Pages: 46 in PDF or view online for FREE

- 29 -

** "

" means that adjustment is possible.

** "x" means that adjustment is not possible.

("SET UP" - "CRT AGING" can not be adjusted.)

FLESH TONE

Main-Item

Sub-Item

R-Y ANGLE

B-Y AXIS GAIN

SUB TINT

SUB COLOR

REAL CONTRAST

REAL BRIGHT

R DRIVE

B DRIVE

G DRIVE

R CUT-OFF

B CUT-OFF

G CUT-OFF

SUB CONTRAST

SUB BRIGHT

BLOOMING DC

Y DRIVE

B-Y / R-Y

SUB TINT

V-POSITION

V-SIZE

H-POSITION

H-SIZE

BLANKING START

BLANKING END

DAF SYNC

H-POSITION

H-SIZE

SIDE-PCC

H-PARALLEL

H-LINEARITY

V-POSITION

TRAPEZOID

V-LINEARITY

V-SIZE

PCC

EW-CORNER·TOP

EW-CORNER·BOTTOM

V-S CORRECTION

MOIRE

X-RAY ADJ.

EHT ADJ.

CRT AGING

HYBRID GAMMA

NTSC DECODER

SCREEN ADJ.

DEF. ADJ.

SET UP

NORMAL

NTSC

480p

HDTV1080i

HDTV COLOR

MATRIX

SDTV COLOR

MATRIX

ZOOM

 FULL

JUST

' !"#$

- 30 -

When the NTSC decoder module [GY] is exchanged, reference must be made to the included data sheet and the adjustment val-
ues must be entered.

(1) Enter into service adjustment mode and select IIC mode. (Refer to page 24 for how to enter into service adjustment mode.)
(2) Select the adjustment item with the remote control and enter the adjustment value. (Refer to pages 26 to 28 for the list of

adjustment items.)

(3) After input of the adjustment values has been completed, switch off the power with the remote control (or at the main unit) to

cancel the adjustment mode. Input an NTSC signal or a 1080i signal and confirm the image.

*Input an NTSC signal on one screen and set the aspect ratio to "FULL".
*Select "NTSC decoder" in "IIC mode" and perform adjustment.

Example: Included data sheet

Adjustment item

Adjustment value

Y DRIVE

B-Y/R-Y

SUB TINT

Upper bit
Lower bit

Upper bit
Lower bit

Upper bit
Lower bit

0 1 2 3 4 5 6 7 8 9 A B C D E F
0 1 2 3 4 5 6 7 8 9 A B C D E F

0 1 2 3 4 5 6 7 8 9 A B C D E F
0 1 2 3 4 5 6 7 8 9 A B C D E F

0 1 2 3 4 5 6 7 8 9 A B C D E F
0 1 2 3 4 5 6 7 8 9 A B C D E F

Data value

19

19

19

!"#$

- 31 -

... Switching of the color temperature between "WARM", "NORMAL", and "COOL" for

each adjustment is not done even when "COLOR TEMP" of "PICTURE ADJ" or
color temperature fine adjustment of "Technical" is selected. Accordingly, enter into
IIC mode, press the "AV ADJ" button of the remote control, and select with the left
and right cursor button to switch the color temperature.

Perform this white balance adjustment when the white or the black parts on the screen are out of balance or when the picture
tube has been exchanged. Before performing white balance adjustment, est the cut-off voltage must be set, and then perform
white balance adjustment.

(1) Input an NTSC signal and set the aspect ratio to "FULL.
(2) Enter into IIC mode and confirm that the color temperature is "WARM". (See above for setting of WARM/NORMAL/COOL.)
(3) Select "HYBRID GAMMA" - "REAL BRIGHT" in IIC mode and fix the adjustment value to "A0". The select "HYBRID GAMMA"

- "G DRIVE" and fix the "G DRIVE" adjustment value to "21".
*Setting to the above conditions facilitates the adjustment of the pedestal level (DC 170 ±5 V) in step (7).

(4) Turn the screen volume (S1) of the flyback transformer to the left, and set so that the OSD can just be seen.
(5) Enter into IIC mode and select "HYBRID GAMMA" - "G CUT OFF".
(6) Connect an oscilloscope to TPL2 (G cut-off) on the L-

Board. Then press the button "

" on the remote control

to obtain a green screen, and use the button "

" on the

remote control to obtain one horizontal line.

*Use TPL9 on the L-Board for probe earth. (There are
also TPL11, L7, L8, etc.)

(7) When the above preparations have been made, use the

Volume "+, -" buttons on the remote control to adjust so
that the pedestal level of the voltage waveform becomes
DC 170 ±5 V (refer to Fig. 1).

Note: Use 10 key Remocon.
(8) After completion of the adjustment, disconnect the oscil-

loscope, gradually increase the screen volume (S1)
(clockwise turning), and fix it where green just starts to
shine.

After fixing, press the button "

" on the remote control

and cancel one horizontal line.

Note: Use 10 key Remocon.
(9) To copy the adjusted G cut-off data with the same values to the NTSC color temperatures "NORMAL" and "COOL" and to the

1080i color temperatures "WARM", "NORMAL", and "COOL", enter "HYBRID GAMMA" - "G CUT OFF", and press the "NOR-
MAL" button on the remote control for 3 seconds.
*When copying starts, the on-screen display flashes red, and the flashing stops when copying has been completed.

6

5

5

*

Set to a condition where 1080i can be Input, press the
"SCREEN" button on the remote control, and set the
screen position to "2". Then enter into IIC mode, confirm
that the on-screen adjustment item is 1080i, and perform
adjustment.

 ... Refer to page 33.

Fig.1 Cut-off voltage

DC170

±

5V

GND

G CUT-OFF

TPL2

( !"#$

- 32 -

*

At the time of NTSC adjustment... Input an NTSC signal and set the aspect ratio to "FULL". (-> Set "3D Y/C FILTER " to "ON"
only at the time of Input of an NTSC signal.)

*

Perform input paying attention to the reception method: NTSC/1080i.

(1) Select "HYBRID GAMMA" in IIC mode and confirm that the color temperature is "WARM".
(2) Look at the black parts of the presently input image and check for black floating or black unbalance.

(3) If there is black floating or black unbalance, select "HYBRID GAMMA" - "R CUT OFF", "B CUT OFF" and adjust with the "

,

" buttons on the remote control. (Low-light adjustment)

*Always have the adjustment values for R cut off and B CUT OFF ready.

(4) Next, look at the white parts and check for white unbalance.

(5) If there is white unbalance, select "HYBRID GAMMA" - "R CUT OFF", "B CUT OFF" and adjust with the "

, 

" buttons on

the remote control. (High-light adjustment)
*Always have the adjustment values for R cut-off and B cut-off ready.

(6) After completion of the adjustment, check the received image, and if there is still unbalance, adjust again according to the

steps (3) to (6).

(7) Next, press the "AV ADJ" button on the remote control and set the color temperature to "NORMAL.
(8) Enter the low-light adjustment values for color temperature "NORMAL".

(9) Enter the high-light adjustment values for color temperature "NORMAL".

(10)Finally, press the "AV ADJ" button on the remote control and set to color temperature "COOL".
(11)Enter the low-light adjustment values and the high-light adjustment values according to the same procedure as

for color temperature "NORMAL".

(12)After completion of the adjustment, check the image, and if there are no problems, switch off the power at the

remote control (main unit) to cancel adjustment mode.

Input Signal

Adjustment Item

R cut-off

B cut-off

1080i

+17

+5

NTSC

+5

+9

Input Signal

Adjustment Item

R drive

B drive

1080i

-1

-8

NTSC

+1

-15

Input Signal

Adjustment Item

R cut-off

B cut-off

1080i

+13

+10

NTSC

+8

+16

Input Signal

Adjustment Item

R drive

B drive

1080i

+6

-22

NTSC

+4

-30

→

Select "HYBRID GAMMA" - "R CUT OFF", "B CUT OFF",
shift the adjustment value from the adjustment value at the
time of color temperature "WARM" according to the table on
the left, and enter the adjustment value the "

, 

" buttons

on the remote control.
*As "G CUT OFF" is adjusted by the setting of the cut-off
voltage, adjustment is not required. (NTSC/1080i)

→

Select "HYBRID GAMMA" - "R DRIVE", "B DRIVE", shift the
adjustment value from the adjustment value at the time of
color temperature "WARM" according to the table on the
left, and enter the adjustment value with the "

, 

" but-

tons on the remote control.
*As "G DRIVE" is the fixed value "21", adjustment is not
required. (NTSC/1080i)

!"#$