PDP-505HD
74
Adjusting Method
Procedure
Adjusting Item
Input signal
Adjusting Point
Adjusting Method
SUB CONTRAST/
SUB BRIGHTNESS
adjustment
SUB VIDEO mode
in Factory mode
SUB CONTRAST.….
"1" Key
SUB BRIGHT .….
"2" Key
ACL. SW .…. .….
"BS5" Key
Color-difference
Level adjustment
(R–Y LEVEL/
B–Y LEVEL)
REFERENCE 2
in Factory mode
R–Y LEVEL ….….
"BS5" Key
Full Field
Color bar signal
R-Y LEVEL adjustment
Observe R-Y color-difference waveform at Pin 3 (INT_Cr) of IC1401
(MATRIX IC) in VIDEO Assy. Adjust R-Y LEVEL so that the point
indicated in the right figure becomes "260mV±15mV".
260
±
15 mV
REFERENCE 2
in Factory mode
B–Y LEVEL ….….
"BS7" Key
B-Y LEVEL adjustment
Observe B-Y color-difference waveform at Pin 4 (INT_Cb) of
IC1401(MATRIX IC) in VIDEO Assy. Adjust B-Y LEVEL so that the
point indicated in the right figure becomes "260mV±15mV".
260
±
15 mV
1) SUB BRIGHT rough adjustment
Set P. ACL. SW OFF.
Observe signal at K2417 in Video
Assy. Adjust so that the blanking
period level of the signal becomes
0 IRE level.
2) SUB CONTRAST adjustment
Set P. ACL. SW OFF.
Adjust so that 0 to 100 IRE level
of the signal at K2417 in Video
Assy becomes "0.8V".
3) SUB BRIGHT fine adjustment
Set P. ACL. SW ON.
Adjust so that the signal level in
blanking period at K2417 in Video
Assy becomes 0 IRE level.
4) Signal level (adjustment value)
confirmation
Set P. ACL. SW ON.
Observe the signal at K2417 in
Video Assy.
Confirm that the 0 IRE to 100 IRE
level of the signal is "0.58V".
RAMP signal
0
±
20 mV
SUB BRIGHT
Adjustment
H Blanking Period
100 IRE
0 IRE
SUB CONTRAST
Adjustment
0.8
±
0.02 V
100 IRE
0 IRE
0.58
±
0.05 V
Signal level (adjustment value)
confirmation
1
2
SUB BRIGHT / SUB CONTRAST adjustment
Summary of Contents for PDP-505HD
Page 5: ...PDP 505HD 5 ...
Page 45: ...PDP 505HD 45 ...
Page 46: ...PDP 505HD 46 A B C D 1 2 3 4 1 2 3 4 3 11 OVERALL CONNECTION DIAGRAM 1 2 ADX2643 ...
Page 47: ...PDP 505HD 47 A B C D 5 6 7 8 5 6 7 8 ADX2643 ADX2643 ADX2643 ADX2643 ADX2643 ...
Page 49: ...PDP 505HD 49 A B C D 5 6 7 8 5 6 7 8 ADX2643 ADX2643 ADX2643 ADX2643 ...
Page 51: ...PDP 505HD 51 A B C D 5 6 7 8 5 6 7 8 AUTO ZOOM BLOCK ...