Panasonic PANAFAX DF-1100, Service Manual

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Panasonic DF–1100
6–12
Thermal Fuse
It is placed in series with the Thermostat on the power line of the Fuser Lamp and performs the tertiary
overheating prevention (in case the Thermostat fails) by opening when the surrounding temperature reaches
approximately 216
ɮ
(420.8
°
F).
Drive Assembly and Toner Cartridge
The Drive Assembly, consisting of the Printer Motor (650) and the drive mechanisms, is activated by
coupling and gear arrangements.
The Toner Sensor (639), a magnetic sensor, detects the remaining quantity of toner in the Toner Cartridge.
When the “TONER” lamp starts to blink, there is still enough toner left in the cartridge to print 100 pages
(based on ITU–T Image No.1). When toner has run out the display will show: “OUT OF TONER & INFO
CODE 041” and the machine is disabled from printing any copies.
The Toner Cartridge consists of OPC Drum, Bias Charge Roller, Development Roller, Developing Blade,
Cleaning Blade, Mixing Blades and Toner Waste Box.
The OPC Drum is an aluminum cylinder coated with an OPC (Organic Photo Conductor) sensitive material.
This surface is photoelectric (retains the charge in the dark and releases the charge in the light). The potential
differences on the surface (a static latent image) form a printed image.
The Bias Charge Roller provides a uniform charge on the OPC Drum surface.
The Development Roller supplies toner to the drum by rotating over the magnet.
The Developing Blade evens the toner on the Development Roller surface and also charges the toner by
friction.
The Cleaning Blade cleans by scraping the remaining toner off the OPC Drum surface after transfer.
6.1.4 Covers and Enclosures
The Platen Cover (301) contains the ADF Cover (310) that shields the ADF Chassis (311) and Paper Guides
(302), (303), which adjust to the Paper Width to properly feed original documents.
The Front Cover (108) has a Speaker (109) mounted inside.
The Rear Cover (101) shields the circuit boards and contains the Battery Cover (102) that provides access
to the Batteries and program ROM.
6.1.5 Control Panel
The Control Panel consists of the Panel PC Boards (217 and 218) and Display PC Board (216), which dis-
plays the various status messages, and a membrane–type panel.