Casio QV-5500SX, Руководство по обслуживанию и список запасных частей

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— 15 —
L-PCB
R, G, B,
CSYNC signal
(1.0 Vp-p)
(CP301)
(CP302)
(CP303)
(CP309)
BOUT
terminal
(CP375)
Signal
generator
Power
Supply
Figure 3-1, 3-2
Digital oscilloscope
2.85V
±
0.05V
(pedestal-10 step)
3.5
±
0.05V
(pedestal-pedestal)
3-1 3-2
3-5. Brightness voltage setting and contrast adjustment
Condition
Nature of signal : 10 step (NTSC)
Adjustment
(1) Execute GRAY SCALE (10STEP) on the test mode.
• While pushing down Flash and shutter button, turn the camera on.
• Push the Flash button twice then press MENU button (MENU 1 display will be shown.)
• Select GRAY SCALE (10STEP) then press the shutter button.
(2) Triggering with FRP (CP380) signal, adjust BOUT signal as described below.
(3) Adjust RGB-AMP (VR340) so that pedestal – pedestal voltage becomes 3.5
±
0.05V.
(4) Adjust contrast VR (VR344) so that contrast terminal (CP376) voltage is 3.0
±
0.05V temporarily.
(5) Adjust Bright VR (VR381) so that pedestal – 3 rd step is 2.20
±
0.05V.
(6) Adjust Contrast VR (VR344) so that pedestal – 10
th
step is 2.85
±
0.05V.
Note :
Make sure that the waveform is not distorted.