Samsung ML-1610 - B/W Laser Printer Especificações descarregar pdf (Página 31)

System Overview

Samsung Electronics

Service Manual

3-17

- Environment Condition

. Operating temperature range : 0 40

. Maintaining temperature range : -20 40

. Preserving Humidity Condition : 10% ~ 90% RH

. Operating atmospheric pressure range : 1atm

- EMI Requirement : CISPR ,FCC, CE, MIC,

- Safty Requrement : IEC950 UL1950, CSA950, C-UL,Semko, EK,CB,

CCC(CCIB),GOST, EPA, Power Save

3.2.6 HVPS board (High Voltage Power Supply)

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.

1) Transfer High Voltage (THV+)

- Input Voltage : 24 V DC ° 15%

- Out Voltage : Max. +1.3KV ° 15% (Cleaning,200 )

- Out Voltage Trigger : 6.5

- Input Voltage Variation : 5 % below(Variation 21.6V°≠26.4V)

Load Variation : % below

- Out Voltage Rising Time : 100 ms Max

- Out Voltage Falling Time : 100 ms Max

- Transfer Variation Voltage on Environment Variation : +650 V(Duty 10%) ~ 5KV (Duty 90%)

- Control Method on environment : THV-PWM ACTIVE,transfer Active signal, of environment sensing

voltage is input and get feed back current, and recalculate it to resistence .

- Control method on transfer output voltage : It is controlled by changing its duty of THVPWM Signal as

follows. 10% Duty : +650V, 90% Duty : +5KV

2) Charge Voltage (MHV)

- Input Voltage : 24 V DC 15%

- Out Voltage : -1.3KV ~ 3.2%

- Out Voltage Rising Time : 50 ms Max

- Out Voltage Falling Time : 50 ms Max

- Out Voltage Range : 30 ~ 1000

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

3) Developing Voltage (DEV)

- IInput Voltage : 24 V DC 15%

- Output Voltage: -350V 4.6%

- 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

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