Samsung SCX-4500 Service Manual

Also see for SCX-4500 Series: Specifications Manual Del Usuario User manual User manual User guide

Contents

Service ManualProduct specification and feature2-22 Samsung Electronics- Rated Output PowerNO Items CH1 CH2 Remarks1 CHANNEL +5V +24.0V2 CONNECTOR PIN CON 2 CON 25V PIN: 2 24V PIN: 7, 8GND PIN: 3, 4 GND PIN: 5, 63 Rated Output +5V 5% (4.75 5.25V)+24V 10% (21.6 26.4V)4 Max. Output current 1.0 A 2.0 A5 Peak Loading current 1.2 A 2.5 A 1ms6 RIPPLE NOISE Voltage 150mVp-p or less 500mVp-p or less7 Maximum output 5W 48W8 Peak output 6.0W 60W 1ms9 Protection for loading Fuse Protection Shutdown when outputshortage and overflowing current flows 2.8A~6.0Acurrent3) HVPS BoardThe HVPS part takes the 24V and outputs the high voltage for THV/MHV/BIAS, and the outputted high voltage issupplied to the toner, OPC cartridge, and transfer roller.Transfer High Voltage (THV+)- Input Voltage : 24 V DC 10%- Out Voltage : Max +5.0KV 3- Output Voltage Variation : 3 % below(Variation 21.6V 26.4V)- Out Voltage Rising Time : 100 ms Max- Out Voltage Falling Time : 100 ms Max- Transfer Variation Voltage on Environment Variation : +400V ~ 5 KV- Control Method on environment : THV-PWM ACTIVE, transfer Active signal, of environment sensingvoltage is input and get feed back current, and recalculate it to resistance.- Control method on transfer output voltage : It is controlled by changing its duty of THVPWM Signal.Charge Voltage (MHV)- Input Voltage : 24 V DC 10%- Out Voltage : -1.2KV ~ -1.8KV DC 3%- Out Voltage Rising Time : 50 ms Max- Out Voltage Falling Time : 50 ms Max