Service Manual
Page 4
... Publication UL1410, 59.7). It is not lodged between a known earth ground (metal water pipe, conduit, etc.) and all times. capacitor networks, mechanical insulators, etc. 3. Use a leakage current tester or a metering system that have special safety characteristics are not pinched ...backs, adjustment and compartment covers or shields, isolation resistor- Disconnect the AC power and DC power jack before servicing. 1-1-2 Servicing the LCD Monitor 1. Figure 1-1. With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. The current measured should...
... Publication UL1410, 59.7). It is not lodged between a known earth ground (metal water pipe, conduit, etc.) and all times. capacitor networks, mechanical insulators, etc. 3. Use a leakage current tester or a metering system that have special safety characteristics are not pinched ...backs, adjustment and compartment covers or shields, isolation resistor- Disconnect the AC power and DC power jack before servicing. 1-1-2 Servicing the LCD Monitor 1. Figure 1-1. With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. The current measured should...
Service Manual
Page 5
...Procedure: Disconnect the power cord from the AC power source and disconnect the DC Power Jack before attempting to the monitor. 2. The insulation resistance between each blade of the AC plug and accessible conductive parts (see above the printed circuit...use freon-propelled chemicals. Minimize body motions when handling unpackaged replacement ESDs. 1-2 Servicing Precautions WARNING: Caution: Note: An electrolytic capacitor installed with leads that are integrated circuits and some field-effect transistors. Reinstall all other conductive materials. 7. Such components are ...
...Procedure: Disconnect the power cord from the AC power source and disconnect the DC Power Jack before attempting to the monitor. 2. The insulation resistance between each blade of the AC plug and accessible conductive parts (see above the printed circuit...use freon-propelled chemicals. Minimize body motions when handling unpackaged replacement ESDs. 1-2 Servicing Precautions WARNING: Caution: Note: An electrolytic capacitor installed with leads that are integrated circuits and some field-effect transistors. Reinstall all other conductive materials. 7. Such components are ...
Service Manual
Page 43
... the duty cycle of the MOSFET from zero to the maximum value over voltage shutdown(OVP) When PWM is turned off , and the Vcc pin capacitor is used to 264V. D801 is activated and the soft-start , the current Setpoint will prevent MOSFET Q804 from shock. When the Vcc pin voltage...
... the duty cycle of the MOSFET from zero to the maximum value over voltage shutdown(OVP) When PWM is turned off , and the Vcc pin capacitor is used to 264V. D801 is activated and the soft-start , the current Setpoint will prevent MOSFET Q804 from shock. When the Vcc pin voltage...
Service Manual
Page 44
The ON/OFF voltage connect to pin10 of IC501 through R822, R823 and R824. C515 connect the TIMER pin of IC501, the capacitor to set the time of IC501) for power MOSFET U501, U502. 2. R504, C504, R505, C505, R532, C529, R530, C522 are output sampling resistor. The sense ... driving, two transformers are connected between high voltage output connector and ground, the divided AC voltage is set to a DC voltage of 0.7V by external capacitor C512, C521 and resistor R508 connected at CT pin of IC501 enables the IC and activates the striking timer. Pin R of energy delivered to the...
The ON/OFF voltage connect to pin10 of IC501 through R822, R823 and R824. C515 connect the TIMER pin of IC501, the capacitor to set the time of IC501) for power MOSFET U501, U502. 2. R504, C504, R505, C505, R532, C529, R530, C522 are output sampling resistor. The sense ... driving, two transformers are connected between high voltage output connector and ground, the divided AC voltage is set to a DC voltage of 0.7V by external capacitor C512, C521 and resistor R508 connected at CT pin of IC501 enables the IC and activates the striking timer. Pin R of energy delivered to the...