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

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5-10. TINT 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 VR301 in order to set the potential difference of the fourth pulse height B (between a pedestal
and the peak) and the second pulse height A (between a pedestal and the peak) of the four pulses of
the VB wave form (CP324) to be less than 0.1 [Vp-p].
3. Notes
(1) Execute this adjustment after color adjustments.
(2) 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
B A
VB terminal
(CP324)
(CP105)
Oscilloscope
QV-8000SX
1 4 3 2
Power supply