28 Aug
2007
28 Aug
'07
4:19 p.m.
On 0823T2005, Tony Duell wrote:
I did that. I've found out that the motor, marked "TEC CLA45-14602,
VOLTAGE 8 V DC, RESISTANCE 10 OHM/PHASE, STEP ANGLE 18 DEG/STEP", is
an unipolar one, four phase, and is working. Then I went to check
its driver, the power supply...
And then I found a blown fuse. Geez, will I never learn to check that
_first_? ;-/
Replace the fuse, power it on, power it off, replace the fuse yet again
and switch the strange plug-like voltage selector from "SET TO 220V" to
"SET TO 240V". Works perfectly now ;-)
Thanks :-)
--
If you cut off my head, what would I say? Me and my head, or me and my body?
I've got
an LA50-RB printer I'd like to get to work. After powering on
the "Power" light goes on, then, after about two seconds, "Fault"
light
starts flashing. Printer produces no audible sounds, nothing moves.
Any idea where to start?
Most dot-matrix printers move the head back and forth at power-on, and
check that the home sensor is working correctly. The fault light that
you're getting could be a result of the carriage not moving at all.
First check the carriage can move -- with the printer off, try sliding it
along the rails.
But I suspect the problem is electrical. The fact that the fault light
comes on and blinks suggests to me that the processor circuitry is
working correctly. Maybe it;s a motor driver problem. Maybe it's a loss
of the motor supply voltage (which will be separate from, and higher,
than the 5V logic supply.
I think I'd start there. Trace out enough of the circuitry to understand
how the motor driver works. THen see if it is getting power, and if it
is, check the logic signals going into it.