Dell 1600n - Multifunction Laser Printer B/W Service Manual page 30

4.2.4.5 Safety Relevant Facts
• Protecting device when overheating
- 1st protecting device: H/W cuts off when detecting an overheating
- 2nd protecting device: S/W cuts off when detecting an overheating
- 3rd protecting device: Thermostat cuts off the power
• Safety device
- The power to the fuser is cut off when the front cover is open.
- The overheating safety device for the customer safety.
- Maintains the surface temperature of the Fuser Cover below 80°C. A customer caution label is
attached on the inside of the rear cover.
4.2.5 Scanner
It reads an image with a photosensitive sensor. It consists of a CCD module, Connection board, ADF board
, AFE (Analog Front End), and Image Processor (Located in CPU), platen glass and ADF.
• CCD Module Specification
1.Resolution: 600dpi/A4
2.Maximum scan wide: 8.5"
3.Color filter: Red, Green, Blue
4.Output channel: 3 channels (R, G, B)
5.Effective pixel: 5,400 pixel *3
6.Voltage: 24V & 5V
7.Pre-heating time: Maximum 30 seconds (70% of light reach to it)
8.The life span of a lamp: 30,000 hours (25
• Image Processor Specification
1.Operating frequency: 66MHz
2.Image sensor interface: 200/300/600 dpi CIS or CCD
3.Line time: Copy, FAX, Binary (Lineart, Halftone) PC Scan: 1.5ms/Line Color PC Scan (Grey, 256
Color, True Color): 4.5ms/Line
4.A/D conversion: 10bit conversion
o C)
Summary of Product
Service Manual
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