HP/ HP P75050 P77740 P77750 P77760 페이지 와이드 프린터 영어 수리 안내서
방문객2020
HP/ HP P75050 P77740 P77750 P77760 페이지 와이드 프린터 영어 수리 안내서HP PageWide Pro 750 and MFP 772, 777 HP PageWide Managed P75050 HP PageWide Managed MFP P77740, P77750, P77760 언어: 영어 수리 매뉴얼 + 분해 매뉴얼, 안에 두 권이 중국어 수리 매뉴얼페이지: 320+1256페이지형식: PDF Electronic Edition
AC control moduleThe AC control module performs the following functions related to the heating elements in the air flow assembly:● Low-cost voltage monitora. The voltage of the outlet, which the printer is attached, is monitored to ensure the printer remains operational, even in a low-quality-power environment. This is done by instantly shutting off heater power until the minimum voltage threshold is met. Hysteresis is included to avoid rapid fluctuations in voltage.b. This circuit generates a frequency modulated signal that is sent across the isolation barrier, and interpreted by firmware in the engine.● Isolation– Isolates the low voltage heater control signals from the high voltage AC power that is applied to the heater. This is a safety feature to ensure line transients (i.e. lightning) aren’t coupled into the low voltage system, which could cause damage to the printer or user.● AC switch– Switches AC power on/off to the heater using TRIACs.● Heating Element Configuration– Using relays, the heating element configuration is changed between series and parallel, in coordination with applied voltage. This is done to have a predictable temperature profile that is functional across the full range of worldwide voltages (90-240VAC).링크:https://pan.baidu.com/s/1ITrrB6YEdmHVvlfCkOmnLQ추출 코드:hdys
