S900
4-8
(4) Paper size sensor
The paper size is detected by IR sensor. The IR transistor transmission to the IR sensor
receiver circuit is shown below.
Figure 5.5 Paper size sensor
4.2.6 SUB POWER SUPPLY CIRCUIT
The sub power supply circuit is provided for the internal analog circuit. The circuit configuration
is shown below:
The sub power supply is used for CCD A/D, control panel, and logic circuits.
Switching
Regulator
+24V
-8V
+3.3V
+5V
Linear
Regulator
+24V
+5Va
+12V
out
Vcc
Linear
Regulator
+1.5V
Содержание S900
Страница 1: ...S900 Service Manual 031103A...
Страница 4: ......
Страница 8: ......
Страница 18: ...S900 3 2 3 1 2 REAR VIEW 1 Printer Port 2 Service Port 3 USB Port 4 ADF Port 5 Power Jack 1 2 3 4 5...
Страница 28: ......
Страница 42: ......
Страница 44: ......
Страница 47: ...S900 7 3 Positions need to be lubricated 2 Sliding Rod 1 Sliding Guide...
Страница 60: ......
Страница 62: ...S900 8 2...
Страница 63: ...S900 8 3...