Samsung CLX-8540ND Service Manual page 44

HVPS_S (High Voltage Power Supply_Small) supplies High Voltage power to Imaging unit (Developer),
Fuser, Saw-plate (T2-Unit).
SAWPLATE (CN3)
• Specification
Channel AC/DC
DC-
MHV
AC
DEVE DC-
T1 DC+
DC+
T2
DC-
Saw Plate DC-
DC+
Fuser Bias
DC-
• Constant current outputs in T1/T2 channels.
• Individual T1 channels for each color.
• Alternative DC +/- outputs between image & non-image periods in T2.
• AC + DC MHV Bias.
• Rated loads in all channels could be change according to the environmental conditions.
• All output channels can be adjusted by using volume control components.
Service Manual
Product Overview
FUSER BIAS (CN4)
No. Type Control
Constant-V PWM Duty
4
- PWM Duty
4 Constant-V PWM Duty
4 Constant-I PWM Duty
Constant-I PWM Duty
1
Constant-V Volume
1 Constant-V PWM Duty
PWM Duty
1 Constant-V
Volume
HVPS 3 (CN5)
Rated
Output
Load
-701 V
250 pF
1.6 KVpp 1.0 ~ 3.2 Vpp
400 MΩ -525 V
90 MΩ 10.4 uA
100 MΩ 19 uA
20 MΩ -500 V
NO -453 V
NO 506V
NO -830 V
2-33
DEVE Y/M/C/K (CN2)
Output Load
Range Range
0 ~ -1800 V
0.1~3 mA
0 ~ -800 V 0 ~ 30 uA
0 ~ 40 uA 0 ~ 3.5 KV
0 ~ 50 uA 0 ~ 6.5 KV
- 0 ~ 20 uA
0 ~ -2.4 KV 0 ~ 40 uA
0 ~ 1.5 KV 0 ~ 20 uA
- 0 ~ 20 uA
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