Samsung ML-3471ND Spezifikationen PDF herunterladen (Seite 31)

Service Manual

Product specification and feature

2-22

Samsung Electronics

2.2.3.2 SMPS & HVPS board

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. 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.

2.2.3.2(a) HVPS (High Voltage Power Supply)

Transfer High Voltage (THV+)

- Input Voltage : 24 V DC 15%

- Output Voltage : MAX +5.0KV 5 %,(Duty Variable, no loading )

->1.2KV 15% (when cleaning,200 )

- Output Voltage Trigger : 6.5

- Input contrast of the Voltage stability degree :under 5 % (fluctuating input 21.6V 26.4V)

Loading contrast : 5 % or less

- Output Voltage Rising Time : 100 ms 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 5%

Charge Voltage (MHV)

- Input Voltage : 24 V DC 15%

- Output Voltage : -1.3KV ~ -1.8KV DC 50V

- Output Voltage Rising Time : 50 ms Max

- Output Voltage Falling Time : 50 ms Max

- Output Loading range : 30 M ~ 1000 M

- Output Control Signal(MHV-PWM) : CPU is HV output when PWM is Low

Cleaning Voltage (THV-)

- The (+) Transfer Voltage is not outputted because the THV PWM is controlled with high.

- The (-) Transfer Voltage is outputted because the THV-Enable Signal is controlled with low

- The output fluctuation range is big because there is no Feedback control.

Developing Voltage (DEV)

- Input Voltage : 24 V DC 15%

- Output Voltage: -200V ~ -600V DC 20 V

- Output Voltage Fluctuation range: PWM Control

- Input contrast of the output stability degree : 5 % or less

Loading contrast : 5 % or less

- Output Voltage Rising Time : 50 ms Max

- Output Voltage Falling Time : 50 ms Max

- Output Loading range : 10M ~ 1000 M

- Output Control Signal (BIAS-PWM) : the CPU output is HV output when PWM is low.

Supply

- Output Voltage : -400 V ~ -800V DC 50 V(ZENER using, DEV )

- Input contrast of the output stability degree : under 5 %

Loading contrast : 5 % or less

- Output Voltage Rising Time : 50 ms Max

- Output Voltage Falling Time : 50 ms Max

- Output Loading range : 10 M ~ 1000 M

- Output Control Signal (BIAS-PWM) : the CPU is HV output when PWM is low.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 187 188

Kommentare zu diesen Handbüchern

Keine Kommentare

Samsung ML-3471ND Spezifikationen Seite 31

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Software Samsung ML-3471ND