3-8
Machine Design ＞ Electric parts
[CONFIDENTIAL]
1 Main PWB
Controls the software such as the print data processing and provides the
interface with computers.
2 Engine PWB
Controls printer hardware such as high voltage/bias output control, paper
conveying system control, and fuser temperature control, etc.
3 Power source PWB
After full-wave rectification of AC power source input, switching for converting to
24 V DC for output. Controls the fuser heater.
4 High voltage PWB
Generates main charging, developing bias, transfer bias.
5Drum PWB
Relays wirings from electrical components on the drum unit.
Drum individual information in EEPROM storage.
6 Drum relay PWB
Consists of wiring relay circuit between engine PWB and the drum unit.
7Relay-L PWB
Consists of wiring relay circuit between engine PWB and drum connect PWB.
8 Operation PWB
Consists the LCD, LED indicators and key switches.
9 Backlight PWB
LCD lighting.
10 Fuser thermistor relay PWB
Consists of wiring relay circuit between engine PWB ,fuser thermistors and
cooling fans.
11 APC PWB
Generates and controls the laser beam.
12 PD PWB
Controls horizontal synchronizing timing of laser beam.
13 Container relay PWB
Reads the container information.
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