Xerox Phaser 3450, Руководство по обслуживанию, Страница: 134 / 155

11-3
CIRCUIT DESCRIPTION
Service Manual
Item Specification & Descriptions Remark
1. Conditions Paper Core Media List 75g/m 2
Environment Temperature : 15 ~ 25°C Temperature
Humidity : 40 ~ 60%
2. Print Quality Optical Density -Avr. 1.30 (Temperature : 15 ~ 25°C) :
After 1hr. from Power On
-Over 1.0 (min.) if left in low temperature.
Background OD delta less than 1.0 (croma meter)
Uniformity Max. 0.2(Including Continuous Print)
Fusing Min 75% ('All Black' & '2 by 2 Pattern')
Skew Vertical : Max. 1.75 mm / 250 mm
Horizontal : Max. 1.5 mm / 200 mm
Bowing Horizontal(applied to 200mm) : less than 0.5 mm
Special Paper Image Density : Min1.0(Envelope)
Exception Fusing : Min. 70%
(Envelope/OHP/Postcard:More than 120g/m 2 )
Paper Jam Less than 1/2000 (75g/m 2 Paper, in L/L condition)
Paper Curl First : Less than 16mm (10 Sheets)-->
measured in 1 min. after printing 10 pages.
3. Reliability Insulation Resistance over 100 M
Ω
(at DC 500V / 1 mm)
Voltage Strength less than 130V / AC 1.0 kV
(Hi-Pot) less than 250V / AC 1.5 kV
Ground Continuous Less than 0.1
Ω
(25A / 3 sec)
Voltage DIP 100%/1cycle, 50%/2cycle, 20%/4cycle
Leakage Current Less than 3.5mA (1.5 kohm)
Surge IEC61000-4-5, Normal ±1KV, Common ±3KV
OZONE Emission Average 0.1 PPM or less
Top Cover Open Isolating the input power from below parts
;LSU, High Voltage Part, DC fan, Clutch, Fuser Motor
Overcurrent Protect Fuse inside the SMPS
4. Fusing System Trouble Sensing .The temperature does not rise to the Indicate the
specific temperature in the specific time. Fuser error
.The temperature is too high.
Overheat Sensing 230 - 240°C(The thermostat cuts off the Fuser from the power.)
Thermistor Open Sensing : Without the initial tempera turn change of
the Fuser
11.1.2 Quality Specification