1-8. Precautions on Servicing
1-8-2. Precaution on Maintenance
1. Handle the CRT body and the controls on the neck of the CRT with utmost care and do not apply
excessive force to the CRT.
2. High voltage and high voltage pulse exist on the high voltage and deflection circuits. Take utmost
care when checking the unit while it is operating; especially high voltage circuit and deflection
circuit. High voltage lines are provided on the printed board. Do not touch these circuits with bare
hand or tools.
3. When touching the CRT for checking purpose or replacing it, cut off the power, before disconnecting
the anode cap, be very sure to turn up one side of the rubber of the cap, and discharge the accumula-
tion of charge to the metal chassis using the tester lead or similar materials.
Disconnect the power cord from the AC power source to prevent possible danger caused by acciden-
tal turning on the power.
4. Dust or dirt accumulated on the unit may cause unforeseen trouble. Periodically check and clean
wiring subjected to high voltage, and CRT face. Clean especially around anode cap.
Pay careful attention to high voltage
(anode cap)
Pay careful attention to
high voltage pulse
Pay careful attention to
(PG-39 board)high voltage pulse
(DF-57 board)
1-16 (E)HDVF-7700 |
ACEC
