29
V-FT450S
/29V-FT95S
24
NTSC CHROMA ADJUSTMENT
NO
ADJUSTMENT POINT
ADJUSTMENT CONDITION / PROCEDURE
WAVEFORM OR REMARKS
1
SUB COLOUR
(1) Receive the US10 Half Color Bar signal.
(I2C BUS CONTROL) (2) Make the image normal with the remote controller
(3) Connect the oscilloscope to TP47R (IC851 #9). ( Use Probe 10:1)
Range : 2V / Div Sweep time: 20m sec / Div
(4) Set the sub color adjustment mode with the remote controller, and vary the sub
color data to make 100% W of the color bar and RED at the same level for
R and
adjustment shown in Fig. 1-1.
100% Wh
same level
Fig. 1-1
NTSC CHROMA ADJUSTMENT
NO
ADJUSTMENT POINT
ADJUSTMENT CONDITION / PROCEDURE
WAVEFORM OR REMARKS
1
SUB-TINT
(1) Receive the "US 10CH Half Color Bar" signal.
(I2C BUS CONTROL) (2) Connect the oscilloscope to TP47B (P860 Pin6) BLUE-OUT
Range
: 100mV/Div (AC)
(Use Probe 10:1)
Sweep time
: 10
µ
sec/Div
(3) Select the "SUB-TINT" item in the ADJUSTMENT MODE.. Adjust the "SUB-TINT"
data to obtain the waveform shown as Figure 1.2 (Cy and Mg same level)
Fig. 1-2
PROTECTOR OPERATION CHECK
NO
ADJUSTMENT POINT
ADJUSTMENT CONDITION / PROCEDURE
WAVEFORM OR REMARKS
1
H.V Protector
(1) Receive Monoscope pattern (US12 CH)
Ref : Apx.13.3V.
(2) Connect the bias box to the cathode side (R607) of D604.
(3) Set the voltage of the bias box at 10V, and verify that the protector does not operate.
(4) Set the voltage of the bias box at 18V, and verify that the protector operate.
SOUND OUTPUT CHECKING
NO
ADJUSTMENT POINT
ADJUSTMENT CONDITION / PROCEDURE
WAVEFORM OR REMARKS
1
Front speaker output
(1) Receive the US-10 Half Color Bar.
checking
(2) Set the volume to maximum and set the other sound setting as follow.
Setting item
#1 : Sound setting for model
Equalizer
with BBE and Super Bass
Surround
in the sound menu.
BBE
Balance
#2 : Sound setting for model
AVL
without BBE and with
Super Bass
Bass + in the sound menu.
Bass +
(3) Connect the voltmeter to the speaker terminal and make sure the reading is 7.6 ± 0.5 Vrms.
OFF
-
-
ON
0
0
OFF
OFF
OFF
OFF
OFF
-
#1
#2
Music
Music
Same Level
W
Y
Cy
G
Mg
R
B
B
Sync
R
G
Y
Mg
Cy
W
100% Wh
