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HORIZONTAL, VERTICAL, DEFLECTION LOOP ADJUSTMENT CONTINUED
NO
ADJUSTMENT POINT
ADJUSTMENT CONDITION / PROCEDURE
6
TRAPEZE
(1) Call the "TRAPEZE" mode.
(I2C BUS CONTROL)
(2) Increase or decrease "TRAPEZE" by Volume key.
7
CUSHION
(1) Call the "CUSHION" mode.
(I2C BUS CONTROL)
(2) Increase or decrease "CUSHION" by Volume key.
8
CORNER AMPLITUDE
(1) Call the "UPPER CORNER" mode.
(I2C BUS CONTROL)
(2) Increase or decrease "UPPER CORNER" by Volume
key.
(3) Call the "LOWER CORNER" mode.
(4) Increase or decrease "LOWER CORNER" by Volume
key.
9
CORNER AMPLITUDE
(1) Call the "UPPER CORNER (SIXTH)" mode.
(SIXTH)
(2) Increase or decrease "UPPER CORNER (SIXTH)" by
(I2C BUS CONTROL)
Volume key.
(3) Call the "LOWER CORNER (SIXTH)" mode.
(4) Increase or decrease "LOWER CORNER (SIXTH)" by
Volume key.
10
ANGLE
(1) Call the "ANGLE" mode.
(I2C BUS CONTROL)
(2) Increase or decrease "ANGLE" by Volume key.
11
BOW
(1) Call the "BOW" mode.
(I2C BUS CONTROL)
(2) Increase or decrease "BOW" by Volume key.
12
S CORRECTION
(1) Call the "S CORRECTION" mode.
(I2C BUS CONTROL)
(2) Increase or decrease "S CORRECTION" by Volume key.
2) 120Hz FULL
Adjust items 2), same as 100Hz FULL NO.1--
NO.12
WAVEFORM OR OTHERS
6-1
FOCUS ADJUSTMENT
ADJUSTMENT CONDITION / PROCEDURE
NO
ADJUSTMENT POINT
1
FOCUS
(1) Receive the "Monoscope Pattern" signal.
(2) Press R/C to set Picture NORMAL condition.
(3) Select full mode.
(4) Adjust the focus control to get the best focusing.
PROTECTOR OPERATION CHECKING
ADJUSTMENT CONDITION / PROCEDURE
NO
ADJUSTMENT POINT
1
H•V PROTECTOR
(1) Receive "Monoscope Pattern" signal.
(2) Connect output of Bias Box to D757 cathode
(3) Set voltage of Bias Box to 18V and make sure the
protector is not work.
(4) Set voltage of Bias Box to 27V, and make sure the
protector is work.
2
OTHER
(1) Once finish rectified Electrolytic Capacitor short testing
PROTECTOR
in + B line, check all possible damaged components on
+B line.
(Use random selected set for inspection)
A/V INPUT AND OUTPUT CHECKING
ADJUSTMENT CONDITION / PROCEDURE
NO
ADJUSTMENT POINT
1
AV
(1) Receive the "PAL Colour Bar" signal (100% White
OUTPUT CHECK
Colour Bar, Sound 400Hz 100% Mod)
(2) Terminate the Video output with a 75 ohm impedance.
Make sure the output is as specified (1.0 Vp-p ± 3dB)
(3) Terminate the Audio output with a 10 Kohm impedance.
Make sure the output is as specified (1.77 Vp-p ± 3dB)
2
AV-1
Check of AV
INPUT CHECK
3
AV-2
Check of AV
INPUT CHECK
4
Component
Check of AV
(50Hz 60Hz 480p 576p)
INPUT CHECK
5
REAR S-Terminal
Check of AV
INPUT CHECK
6
FRONT
Check of AV
INPUT CHECK
7
FRONT S-Terminal
Check of AV
INPUT CHECK
WAVEFORM OR OTHERS
(Adjusted point)
Adjust these Horizontal
and Vertical lines
50
WAVEFORM OR OTHERS
WAVEFORM OR OTHERS
6-2
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