Maintenance Cartridge; Air Flow; Paper Path; Outline - Canon 1692B002 Service Manual

Chapter 2
Suction pump
Rotating rollers

2.3.2.6 Maintenance Cartridge

2.3.2.6.1 Maintenance cartridge

a) Maintenance cartridge
The maintenance cartridge holds as much about 1200 mL of used inks (about 1280 g: including the evaporation of moisture from the used inks).
b) Used maintenance cartridge ink detection
Used maintenance cartridge ink detection is monitored with regard to a dot count.
When the quantity of the used ink reaches about 960 mL (about 1024 g, 80% of the cartridge capacity), the warning message "Maintenance C Space Check" isdis-
played to tell that the maintenance cartridge is nearly full.
Printing may continue even when the warning message is displayed.
When the quantity of the used ink reaches about 1200 mL (about 1280 g, 100% of the cartridge capacity), a replacement prompt error message is displayed, telling
that the maintenance cartridge is full.
When the printer determines that the maintenance cartridge is full, it shuts down even while it is printing.
The printer will remain inoperable until the maintenance cartridge is replaced.
Memo:
- The maintenance cartridge houses EEPROM, so that engine firmware can control the status of the maintenance cartridge by writing to and reading from the
EEPROM content.
There is no need to initialize the counter information, therefore, when the maintenance cartridge is replaced.

2.3.2.7 Air Flow

2.3.2.7.1 Air flow

Ink mists floating during printing or springing back from the paper are collected in the mist fan unit by air flow in the printer.
Two mist fans located on the rear side of the printer makes the airflow that carries the ink mists to the mist fan unit.

2.3.3 Paper Path

2.3.3.1 Outline

2.3.3.1.1 Overview of Paper Path

The key components of the paper passage consist of a feed roller assembly, a pinch roller drive that locks and releases the pinch roller and sensors that detect the
feed status of paper. It feeds paper in trays, conveys and delivers paper.
2-14
Cap
Ink tubes
Purge motor
F-2-14
F-2-15
Cap
Pump cam sensor
Pump encoder
Suction pump
0012-6346
0014-8865
0013-8780