Pioneer PDA-5002, Руководство по обслуживанию

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106
PDP-503CMX, PDP-503MXE, PDA-5002
Input Signal Step Adjusting Method
Video signal
1
Connect a Video card in RGB Assy through a jig cable, and set it in the state that RGB Assy can measure.
(Refer to page 133 "Diagnosis of the Video Card (PDA-5002)".)
Cannot measure the signal level that does not use a jig cable.
Note: Be careful in the direction of connector of a jig cable.
2
Input a 525i signal to INPUT1 or INPUT2 with a component signal.
A signal pattern is only luminance signal such as lamp signal and a STEP signal.
And use the signal which black level (0IRE) and gradation can confirm.
Note: May use a standard NTSC Video signal as Y (luminance) signal of component signal.
3
In the signal input function (INPUT1 or INPUT2), perform the display mode of VIDEO signal to component.
MENU
→
SETUP
→
VIDEO SIGNAL : COMPONENT
4
Turn to standby once, and perform power supply ON with the factory mode once again.
MENU
→
SET
→
POWER ON
5
Turn ACL SW setting to OFF.
INITIALIZE mode
ACL SW : 3 key
Select OFF by right and left keys.
6
Decrease three steps of MAT CONT adjustment value of OFFSET-RGB1.
OFFSET mode: Select the RGB 1 mode by top and bottom keys
MAT CONT : 1 key
Decrease three steps of adjustment value by right and left keys.
7
Decrease two steps of MAT BRIGHT adjustment value of OFFSET-RGB1.
OFFSET mode: Select the RGB 1 mode by top and bottom keys
MAT BRIGHT : 2 key
Decrease two steps of adjustment value by right and left keys.
8 Take a trigger of oscilloscope with HD_PLL (3.3Vp-p) of K4805.
9 Measure a signal waveform of Green signal at K4603, and measure the black level (0IRE) of signal and signal
amplitude.
10
AD R LOW adjustment
Measure the black level (0IRE) of Red signal at K4602, and adjust so that the level of AD R LOW to match the black
level (0IRE) of Green signal which measured with step 10.
Adjustment error:
±
0.05V
OFFSET mode: Select the RGB 1 mode by top and bottom keys
AD R LOW : 9 key
Adjust by right and left keys.
11
AD R HIGH adjustment
Measure the signal amplitude of Red signal at K4602, and adjust so that the level of AD R HIGH to match the signal
amplitude of Green signal which measured with step 10.
Adjustment error:
±
0.05V
OFFSET mode: Select the RGB 1 mode by top and bottom keys
AD R HIGH : 6 key
Adjust by right and left keys.
12
AD B LOW adjustment
Measure the black level (0IRE) of Blue signal at K4604, and adjust so that the level of AD B LOW to match the black
level (0IRE) of Green signal which measured with step 10.
Adjustment error:
±
0.05V
OFFSET mode: Select the RGB 1 mode by top and bottom keys
AD B LOW :11 key
Adjust by right and left keys.
• Video Card (PDA-5002 equivalency) is necessary for white balance adjustment for Video signal of RGB Assy.
• Adjust with Video system signal (525i) and RGB (PC VGA) signal.
• Adjust so that the Red and Blue signals becomes the same level and amplitude by reference with Green signal.
White Balance Adjustment
13
AD B HIGH adjustment
Measure the signal amplitude of Blue signal at K4604, and adjust so that the level of AD B HIGH to match the signal
amplitude of Green signal which measured with step 10.
Adjustment error:
±
0.05V
OFFSET mode: Select the RGB 1 mode by top and bottom keys
AD B HIGH : 8 key
Adjust by right and left keys.