Canon imageRUNNER 2270 Service Manual page 440

10.4.1.2 Power Supply Route in the Reader Unit
The printer unit controller PCB generates the following DC voltages using the 13 VDC
supplied by the printer unit:
- 24 VDC (for motor drive)
- 13 VDC (for LED array)
- 5 VDC (for sensor drive)
- 3.3 VDC (for IC drive/for CCD drive)
24 VDC power is used to drive the motors, while 13 VDC power is used to turn on the
LED array for illumination of originals.
To printer unit
(scanner PCB)
100 VAC
From printer unit
24 VDC, 13 VDC
From printer unit
To DF
DC24V
AC100V
Printer unit
controller PCB
F-10-5
DC13V
DC13V/3.3V
To DF
0 4
J 5
Generates 5 VDC from 13 VDC
Generates 3.3 VDC from 13 VDC
DC24V
AC100V
Chapter 10
0006-5393
10-11