Measuring Power Signals
The following power signals can be measured on the top side of the PCA.
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VDD (+5V) Across Tantalum CAPs C574, C573
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+3.3V Across Tantalum CAPs C578, C575
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VCPU (3.3V on -001
and 2.9V on -002) Across Tantalum CAPs C572, C571, C570, and C569
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VBAT At Fuse F1
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+12V Across CAP C522, near PCMCIA connector
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VCC1 can be measured at Pin 28 of U539.
Solving Printer Problems
If you experience problems printing, run a printer self-test. Refer to the
documentation provided with your printer for instructions. If the
self-test fails, it is a printer-specific problem. Also refer to the
printing section of your application documentation.
Table 2-24. Solving Printer Problems
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Problem Probable Cause Solution(s)
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Printer will not The signal cable may not Ensure that the signal
turn on. be connected properly, cable is properly
or the printer is connected and that the
unplugged. power cord is connected
to the electrical outlet.
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Printer will not Printer is not turned on Turn the printer on and
print. or is off line. set it to online.
The device drivers for Refer to the printer
your application are not documentation to Install
installed. the correct printer
driver.
Printer that is set up Connect the printer to
for a network is not the network.
connected to the
network.
Printer cable is too Replace the cable.
long, unshielded, or
defective.
Paper tray is empty. Fill the paper tray with
paper and set the
printer to on line.
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