Voltages Resistances And Tolerances - Xerox VersaLink B7025 Service Manual

Voltages Resistances and Tolerances

For AC power specifications, refer to GP 17
DC Voltage Levels and Tolerances
DC voltages should be measured between an available test point and a machine ground.
Table 1 shows the range of the common voltages.
Table 1 DC voltage levels
Nominal Voltage Voltage Tolerance Range
0V 0.00 to 0.10V
+3.3V standby +3.23V to +3.43V
+3.3V +3.23V to +3.43V
+5V and +5V standby +4.75V to +5.25V
+12V +11.4V to +12.6V
+24V +23.28V to +25.73V
Non-standard voltage levels will be quoted on the relevant wiring diagram or BSD. All other
voltage levels are plus or minus 10%.
Resistance Tolerances
All resistance measurement tolerances are plus or minus 10%, unless otherwise stated in the
procedure.
DC Signal Nomenclature
Figure 1 shows the signal nomenclature used in the BSDs.
Figure 1 Signal nomenclature
Launch Issue
Xerox® VersaLink® B7025/B7030/B7035 Multifunction Printer
Electrical Power Requirements.
Table 2 shows the signal tolerances.
Signal Voltage
+5V
+3.3V
Non standard signal tolerances will be quoted on the relevant circuit diagram.
NOTE: The logic level shown with the signal name will be the actual signal as measured with a
service meter. This will not necessarily be the same as the logic state shown on the diagnostic
screen.
April 2017
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Table 2 Signal tolerances
(H) Logic Level (L) Logic Level
+3.85V or greater At or near 0.8V
+2V or greater At or near 0.8V
Voltages Resistances and Tolerances
Introduction