Samsung SCX 6322DN - B/W Laser - All-in-One - Page 26

Samsung Electronics
Service Manual
System Overview
3-8
3.2.3.2 HVPS
1) Transfer High Voltage (THV)
- Input Voltage : 24 V DC
15%
- Transfer Output Voltage : MAX +5.0kV DC
10 %,(non-load )
- Transfer Cleaning Voltage : -1.0kV DC
15% (when cleaning,200 )
- Voltage Stability comparing with Input :
5 % or less(Input Fluctuation 21.6V 26.4V comparing with Load : 5 % or
less
- Output Voltage Rising Time : 100 ms Max(tbc)
- Output Voltage Falling Time : 100 ms Max(tbc)
- Environmental Transfer Variable Voltage : 500 V ~ 4.5 kV
- Environment Recognition Control Method : It detects resistance by recognizing the current by feedback with impressing
the environment recognition voltage.
- Transfer Output Voltage Control Method : It controls the output by duty change of THV PWM Signal.
- Cleaning Voltage Control Method : Stationary voltage output when THV-EA signal is 'LOW'
2) Charge Voltage (MHV)
- Input Voltage : 24 V DC
15%
- Output Voltage : -1.3kV ~ -1.45KV DC
5 %
- Output Voltage Rising Time : 50 ms Max
- Output Voltage Falling Time : 50 ms Max
- Load range : 30 M
~ 2000 M
- Output Control Signal : CPU outputs high voltage when MHV-PWM is 'ON'
3) Developing Voltage (DEV)
- Input Voltage : 24 V DC
15%
- Output Voltage : -250V ~ -500V DC
5 %
- Output Voltage Variable range : PWM control
- Output Voltage Rising Time : 50 ms Max
- Output Voltage Falling Time : 50 ms Max
- Load range : 10M
~ 1000 M
- Output Control Signal : CPU outputs high voltage when BIAS-PWM is 'ON'