Xerox Phaser 3450, Service Manual, Page: 95 / 155

7-20
TROUBLESHOOTING
Service Manual
7.4.4 Error message (LCD window) related in a toner sensor
It explains a message related in toner sensor in a LCD.
7.4.4.1 Invalid Toner
- Contents: It is displayed when a supplier is different between a developer and a set. If this message is shown up, a
printing process cannot operate.
- Solution: Attach a suitable developer (the same supplier's) to a set. (A unique key has been applied.)
7.4.4.2 Low Toner
- Contents: This message shows up when a message "remaining toner: 10%" is displayed in a cartridge count informa-
tion. And the same message shows up when an OPC count becomes 18,000 (page).
- Solution: It means that a toner in the developer has been almost ended. Replace the developer.
7.4.4.3 Replace Cartridge
- Contents: This message shows up when an OPC count becomes 20,000 (pages). It means the life span of a toner
cartridge (except a toner part) has been ended. Even though a case that a toner is refilled, the rest of major
parts have been ended, so entire toner cartridge might be replaced.
- Solution: If an OPC rotates about 20,000 (page), in a worst case, a toner overflows and it may cause a system fail.
Therefore, recommend a user to replace a developer. When continuously using, even though a count reach-
es to 20,000 pages, a printed image becomes misty, and an on-line key that is flashing on a set must be
pressed for a single print.