Xerox 3210 - workcentre b/w laser, Service Manual

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3-4 WorkCentre 3210/3220 Multifunction Printer Service Manual
Error Messages and Codes
Measurement Techniques
1. Unless indicated otherwise, the instruction “switch On printer power”
means for you to switch On printer power and let the printer proceed
through Power On Self Test (POST) to a ‘Ready’ condition.
2. Conventions used in this manual to represent connectors
3. When instructed to take voltage, continuity or resistance readings on
wiring harness, proceed as follows; Check P/J 232–1 to P/J 210–5 by
placing the red probe (+) of your meter on pin 1 of P/J 232, and place the
black probe (–) of your meter on pin 5 of P/J 210.
4. When you are instructed to take resistance readings between “P/J 232
<=> P/J 210” (without specified pin numbers), check all pins. Refer to the
section "Wiring" for the location of all wiring harnesses and pins.
5. When you are instructed to run a test, run the diagnostic test associated
with the component being examined.
6. When you are instructed to take a voltage reading, the black probe (–) is
generally connected to a pin that is either RTN (Return) or SG (Signal
Ground). You can substitute any RTN pin or test point in the printer, and
you can use FG (frame ground) in place of any SG pin or test point.
7. Before measuring voltages make sure the printer is switched On, the
consumables and the paper trays are in place, and the interlock switch is
actuated, unless a troubleshooting procedure instructs otherwise.
8. All voltage values given in the troubleshooting procedures are
approximate values. The main purpose of voltage readings is to
determine whether or not a component is receiving the correct voltage
value from the power supply and if gating (a voltage drop) occurs during
component actuation. Gating signals may be nothing more than a pulse,
resulting in a momentary drop in voltage that may be difficult or
impossible to read on the average multi-meter.
9. When a troubleshooting procedure instructs you to replace a non-spared
component and that component is part of a parent assembly, you should
replace the entire parent assembly.
10. Ensure that you are using a supported media size and type.
11. Power and signal grounds are connected to the frame ground. All circuit
troubleshooting can be performed using the metal frame (chassis) as the
grounding point. To locate connectors or test points, refer to the "Wiring"
section for more information.
Unless otherwise specified, the following voltage tolerances are used
within this section:
Stated Measured
+3.3 VDC +3.135 to +3.465 VDC
+5.0 VDC +4.75 to +5.25 VDC
+24.0 VDC +21.6 to +26.4 VDC
0.0 VDC Less than +0.5 VDC
P/Jxx
YY
Pl u g a n d Jack