Page: 196
Service Guide OF1000
Chapter A Reference Charts
A.2.03 Power Supply Board (PWU-150)
Function
The power supply board converts the AC input voltage into +5 vdc, +/-12 vdc, and +38 vdc for use
throughout the printer.
Firmware
NONE
Fuses
F1: 6.3 amp 125 vac. AC line protective fuse.
F2: 3.5 amp 125 vdc. Protects the +38 volt circuit. (Soldered)
F3: 5.0 amp 125 vdc. Protects the +5 volt circuit. (Soldered)
Jumpers
NONE
Switches
SW1: AC power switch
Test Points and Output Ratings
Pin Number
Rated
Voltage
Rated
Current
Current
Range
Voltage
Range
Output
Ripple
CN3 Pins 8 9
CN2 Pins 6 7
CN4 Pins 8to
10
+ 5
vdc
2.5 A
.3 to
5.3 A
+5V +/- 5%
100 mV
CN3 Pins 2 3
CN2 Pins 1 2
+ 38
vdc
2.2 A
0 to
2.8 A
+34V to
+41V
1000
mV
CN3 Pin 1 CN4
Pins 1 2
+ 12
vdc
0.3 A
0.1 to
0.5 A
+12V +/-
5%
100 mV
CN3 Pin 4 CN4
Pins 3 4
- 12
vdc
0.1 A
0.1 A
-12V +/-
5%
100 mV
Содержание OF1000
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