Power-on sequence
The power-on sequence initializes the device and detects possible malfunctions or jams.
1. Power on
2. CPU initializes
3. Video interface communication starts
4. Residual paper check (detect paper presence via each sensor)
5. Receive formatter command
6. Initial drive for main motor
7. Initial drive for fuser heater
8. Initial drive for fuser motor
9. High-voltage control
10. Failure/abnormality check
11. Communicate with print cartridge memory tag
Engine control system
The engine control system coordinates all device functions and drives the other systems.
The engine control system contains these components:
●
DC controller PCA
●
High-voltage power supply PCA
●
Low-voltage power supply unit
PCA
PCA
PCA
Figure 4-3 Engine control system
ENWW Print engine 107
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