Xerox 3150 - Phaser B/W Laser Printer, Руководство по обслуживанию

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Summary of Product
Service Manual 4-13
4.4.1 High Voltage Power Supply
1) Transfer High Voltage (THV+)
Input Voltage: 24 VDC ± 15%
Output Voltage: MAX +5.0K V ± 5%, (duty variable, no loading
1.2 KV ±15% (when cleaning, 200 M
Output Voltage Trigger: 6.5 uA
Input contrast of the Voltage stability degree :under ± 5 % (fluctuating input 21.6 V~26.4 V)
Loading contrast : ± 5% or less
Output Voltage Rise Time: 100 ms Max
Output Voltage Fall Time: 100 ms Max
Transfer voltage range as environment varies: +650 V(Duty 10%) ~ 5K V (Duty 90%)
Environment Recognition Control Method:
The THV-PWM ACTIVE is the transfer active signal. It detects the resistance by recognizing the voltage
value, F/B, while permitting the environmental recognition voltage.
Output Voltage Control Method:
Transfer output voltage is output and controlled by changing the duty cycle of the THV PWM Signal.
10% duty: +650 V; 90% duty: +5K V±5%
2) Charge Voltage (MHV)
Input Voltage: 24 VDC ± 15%
Output Voltage: -1.3K V ~ -1.8K VDC ± 50V
Output Voltage Rise Time: 50 ms maximum
Output Voltage Fall Tim: 50 ms maximum
Output Loading range: 30 Mž ~1000 Mž
Output Control Signal (MHV-PWM): CPU is HV output when PWM is low
3) Cleaning Voltage (THV-)
The (+)Transfer Voltage is not output because the THV PWM is controlled with high.
The (-)Transfer Voltage is output because the THV-Enable Signal is controlled with low.
The output fluctuation range is big because there is no Feedback control.
4) Developing Voltage (DEV)
Input Voltage: 24 VDC ± 15%
Output Voltage: -200 V ~ -600 VDC ±20V
Output Voltage Fluctuation range: PWM Control
Input contrast of the output stability degree: ±5 % or less
Loading contrast: ± 5 % or less
Output Voltage Rise Time: 50 ms maximum
Output Voltage Fall Time: 50 ms maximum
Output Loading range: 10 Mž ~ 1000 Mž
Output Control Signal (BIAS-PWM): the CPU output is HV output when PWM is low.