UBI EasyCoder 501 – Service Manual
207
26. TROUBLE SHOOTING, cont'd.
26.14
Parallel Interface Board
Troubles
26.15
Industrial Interface Board
Troubles
• First, see “No communication (general)”, chapter 26.2.
• Check that the cable to connector P-4 on the CPU board to is
properly mounted.
• Check that straps S-1, and S-2/S-3 are fitted correctly, see chapter
22.2.
• If the printer has to 5V to "centronics:", check that a
jumper is fitted on P-2.
• The Centronics interface requires no setup. It is however essential
that the current program of the printer should enable the Centro-
nics interface as standard I/O channel by means of a
SETSTDIO
statement, see UBI Fingerprint Reference Manual.
• Check that the supply v5V is present.
• Verify, by means of an oscilloscope, that all signals during
receiving and transmitting data have the appearance described in
chapter 22.
• First, see “No communication (general)”, chapter 26.2.
• Check that the straps on P-2 and P-6 – P-8 are fitted so the relation
between relay position and Out signal is correct for the applica-
tion.
• Check that the cable to connector P-4 on the CPU board is
properly mounted.
• If ex5V is required on "uart3:", check that a jumper is fitted
on P-1.
• Check that the supply v5V is present.
• Verify, by means of an oscilloscope, that all signals during
receiving and transmitting data have the appearance described in
chapter 23. Verify also that oscillator Y-1 on the Industrial
Interface Board is running.
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