A.2.06 Power Supply Board (Pwu) - OKIDATA OF2600 Service Manual

Page: 157
Service Guide OF2200/2400/2600
Chapter A Board Diagrams

A.2.06 Power Supply Board (PWU)

Function
The power supply board converts the AC input voltage into +5 vdc, +/-12 vdc and +38 vdc for use
throughout the printer. This board generates the high voltages needed for the electrostatic printing
process.
Firmware
NONE
Fuses
F1: 6.3 amp AC line fuse
F2: 3.15 amp protects the +38 vdc circuitry
F3: 5 amp protects the +5 vdc circuitry
Jumpers
NONE
Sensors
PS1: Paper Exit Sensor
PS2: Paper Sensor (detects the leading edge of the paper)
PS3: Inlet Sensor #1
PS4: Paper End Sensor (detects the presence of paper in the installed cassette)
PS5: Paper Width Sensor
PS6: Toner Low Sensor
Switches
SW1: AC Power Switch
SW2: Cover Open Switch
Test Points
CN 4: Pins 7, 8, 14, 15: +5 vdc
CN 4: Pin 9: -12 vdc
CN 4: Pin 11: +12 vdc
CN 4: Pin 1, 2, 3: +38 vdc
CN 4: Pin 4, 5, 6: GROUND