Dell 2355DN Service Manual - Page 29

Product spec and feature 2.2.1.7 Telephone Section 1) Speed Dial: 2) On-hook Dial (manual fax): 3) Last Number Redial: 4) Automatic Redial: 5) Pause: 6) Ringer Volume: 7) Tone/Pulse: 400 Locations (46 digits maximum per location) Yes Yes Yes Yes Off, Low, Medium, High Selectable (Tech Mode Only no Telecom certification for Pulse mode) 2.2.1.8 SMPS & HVPS Section The SMPS supplies DC Power to the System. It takes 110V/220V and outputs the +5V, +24V to supply the power to the main board and DADF board. The HVPS board creates the high voltage of THV/MHV/Supply/Dev and supplies it to the developer part for making best condition to display the image. The HVPS part takes the 24V and outputs the high voltage for THV/MHV/BIAS, and the outputted high voltage is supplied to the toner, OPC cartridge, and transfer roller. ■ HVPS (High Voltage Power Supply) • Transfer High Voltage (THV+) - Input Voltage: 24 V DC +15% / -10% - Output Voltage: +1300V±3% at 200MΩ load • Charge Voltage (MHV) - Input Voltage : 24 V DC +15% / -10% - Output Voltage : -1350V±3% at 50MΩ load • Cleaning Voltage (THV-) - Input voltage : 24VDC+15%/-10% - Output voltage : -1200±20% at 200MΩ load • Developing Voltage (DEV) - Input Voltage : 24VDC+15%/-10% - Output Voltage: -330±3% at 50MΩ load • Supply - Input voltage : 24VDC+15%/-10% - Output voltage : -530±3% at 50MΩ load 2-20 Service Manual