Service Manual
Summary of Product
4-10
Samsung Electronics
4.2.8 CRU (Customer Replaceable Unit) Section
The Toner cartridge and Drum cartridge are consumable items which require replacement. When each cartridge
nears the end of its service life a message will be displayed in the control panel to inform the user that the
cartridge requires replacement.
Store CRU cartridges in a location that is not subject to rapid changes in temperature or humidity.
4.2.8.1 Toner Cartridge Specification
The Toner CRU has a CRUM to enable the firmware to differentiate Samsung and third party versions as well as
detect CRU presence.
• Toner Level Sensor : YES
• Low Toner : Message displayed on LCD "Toner Low"
There are 2 conditions which will cause the "Toner Low" message to appear on the control panel.
a) This state is detected by an optical sensor which detects the physical amount of toner remaining
b) or a decision is made by the F/W when 12,000 pages have been printed after the toner cartridge has
been replaced. This F/W decision is needed to prevent the waste toner bin from overflowing.
The machine can continue making copies when this message is displayed. However, preparation of the new toner
cartridge is recommended.
• Toner Empty : Message Displayed on LCD "Toner Empty"
There are 2 conditions which will cause the "Toner Empty" message to appear on the control panel.
a) When the toner detector indicates that toner has run out
b) After an additional 300 pages have been printed after entering the "Toner Low" state.
"Toner Empty" is written to the CRUM and a message appears on the UI. To avoid faint or otherwise poor quality
printing replace the toner cartridge.
When “Toner Empty” message is displayed on LCD, the print function of machine stops to avoid faint or poor printing
quality .
If the continuous print is needed without replacing the new toner cartridge, follow the next steps.
Push [menu] button repeatedly, then Select [Machine Setup].
Push [ ] or [ ] button repeatedly, then Select [Ignore Toner Empty].
* “ON” : Continue to print.
* “OFF” : Stop printing (Default).
If the maximum printing counts arrive at 12,300 pages (300 prints after 12,000 prints), “Toner Empty” / “Replace
Toner” message is displayed on LCD together and the print function of machine stops to prevent the waste toner
bin from overflowing. Besides, [Ignore Toner Empty] function is fixed only [OFF].
• CRUM : Yes (EEPROM in Toner Cartridge)
• White glove installation : Yes (meets required standards)
• Life (Service) Time :
The service life of a cartridge is based on an estimated printing with 5% coverage on one A4 or Letter page at
the default density settings in the machine.
- (Starter) 8,000 images A4 or Letter page, ISO 5% coverage (ISO 19752 Stnadard Pattern)
- (After-Market) 8,000 images A4 or Letter page, ISO 5% coverage (ISO 19752 Stnadard Pattern)
* Toner Cartridge Yield : Average cartridge 8,000 standard pages.
Declared yield value in accordance with ISO/IEC 19752.