Casio QV-8000SX, Руководство по обслуживанию и список запасных частей

Страница: 26 / 57

— 24 —
5-9. Color setting adjustment
1. Preparation
• AC adaptor or voltage regulator
• Digital oscilloscope
2. Adjustment procedure
(1) Start up Test mode Menu1.
1. Turn POWER on while pressing DISP key and MENU button simultaneously
2. Quickly press keys in the order of FLASH key, FLASH key and MENU key.
(2) Select / Execute COLOR BAR.
(3) Trigger VB waveform (CP322) by FRP (CP305) signal to adjust as noted below.
(4) Adjust the VR300 in order to set the width of the fourth pulse (between a pedestal and the peak) of the
four pulses of the VB waveform (CP342) at 2.90
±
0.05 [Vp-p]
3. Notes
(1) Execute this adjustment after adjusting the contrast.
(2) Consecutively, execute the TINT adjustment.
(3) When unable to adjust using AC adaptor, use voltage regulator and supply power to be VCC-1-1 (CP149)
= 5.0
±
0.05 V.
4. Connection diagram
L-PCB
VCC1-1
2.90
±
0.05 [Vp-p]
VB terminal
(CP324)
(CP105)
Oscilloscope
QV-8000SX
1 4 3 2
Power supply