User manual

Preventive Maintenance
5-50 ProMaster 2500 User Manual
Press a key on the terminal keyboard. If the port is operating properly,
the character you typed appears on the terminal display. If random
characters are displayed, the baud rates may not match, or there may be a
problem in the handler or terminal port. Press any key to end the test and
return to the Communications Diagnostic menu.
Programming
Electronics Self-test
The programming electronics assembly goes through a complete self-test
on powerup, or when you select self-test from a special menu in
TaskLink. The self-test command allows you to test portions of the
programming electronics (PE) to verify proper operation or to isolate a
problem.
The 2500 verifies internal voltages every time it is powered up and every
time a complete self-test is run. The voltage verification is performed by
software and is compared to a precision, laser-trimmed +10 volt
reference. Data I/O recommends that you cycle
and
run a complete self-
test cycle at least every three months so that the PE remains within its
specified operating range.
To ensure that your 2500 continues to meet product performance
specifications, Data I/O recommends a complete, preventive
maintenance check and performance evaluation every three months.
Powerup Self-test
During powerup, the PE performs self-test diagnostics, including a
performance verification of its internal power supplies and a test of the
microprocessor’s kernel components (EPROM, ID PAL, system RAM,
DUART, and decode circuits).
When the kernel tests are complete, the PE reads the system files on the
disk drive and loads them into its system RAM. Then it completes self-
test by checking its major boards and assemblies. The PE’s completion of
the self-test indicates only that the main components are functioning
enough for the PE to complete the self-test; it does not necessarily indicate
the absence of errors.
ESD Precautions
The circuit boards in the 2500 are susceptible to electrostatic discharge
(ESD), which can damage the circuitry in the programming electronics.
The easiest way to prevent damage from ESD is to make sure a common
static potential (ground) exists between the static-sensitive device, its
environment, and you. Use an antistatic strap to ground yourself to an
antistatic workstation.
WARNING:To avoid electric shock, the antistatic wrist strap must
contain a 1 M
Ω
(minimum) to 10 M
Ω
(maximum)
isolating resistor.
If you don’t have an antistatic work station available, you can wear an
antistatic wrist strap and connect it to the banana plug on the 2500.