Filter
Top Products
Service Manual
System Outline
4-12
4.1.8 Telephone Section
4.1.9 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 ADF 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 dis -
play 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%
Output Voltage: MAX +5.0KV Duty Variable,)
-1.2KV 15% ()
Output Voltage Trigger: 6.5
Line Regulation : under 3% (fluctuation input 21.6V ~ 27.6V)
Output Voltage Rising Time 50ms Max
Output Voltage Falling Time : 100 ms Max
Fluctuating transfer voltage with environmental various : +650 V(Duty 10%) ~ 5 KV (Duty 90%)
Environment Recognition Control Method : The THV-PWM ACTIVE is transfer active signal. It detects the resistance
by recognizing the voltage value, F/B, while permits the environmental recognition voltage.
Output Voltage Control Method : Transfer Output Voltage is outputted and controlled by changing Duty of THVPWM
Signal. 10% Duty : +650V, 90% Duty : +5KV
Speed Dial: 400 Locations (46 digits maximum per location)
On-hook Dial (manual fax): Yes
Last Number Redial: Yes
Automatic Redial: Yes
Pause: Yes (using Redial key)
Ringer Volume: Off, Low, Medium, High
Tone/Pulse: Selectable (Tech Mode Only no Telecom certification for Pulse mode)