Black Box PS035A - Manual (Page 14)

PQ-6 PLUS (RO)
13
Self-Test
After running the power test successfully, you can run the self-test to check the PQ-6 PLUS (RO) program
memory (ROM) and buffer memory (RAM). You can perform the self-test via two different methods: internal
DIP switches or the front-panel test button. Either way, the printer will print the software revision level, address
selected, and printer emulated. The self-test will also send a printed barber-pole test pattern to the printer. The
amount of data in the barber pole is different between the two types of self-tests. The self-test procedures and
device response are shown in Table 3-5. Figure 3-1 illustrates a sample of a self-test printout.
Table 3-5. Self-Test Procedures and Device Responses.
Preliminary Initial Device Corrective
Condition Test Response Action
Both PQ-6 PLUS (RO) Two methods of 1. Printed verification 1. Proper response. No
and printer are “ON” performing the occurs as described corrective action necessary.
and the “Power ON” self-test: via switches above.
test has been or via the front-panel
conducted test button
successfully. Switch method: Set
SW2-4 ON, SW2-5 ON,
then press and release
the reset button on the
rear of the unit.
Front-panel method:
Press the front-panel
test button.
When performing either
method of self-test, the
front-panel LEDs will
flash once, then the
Data Out LED will
flash rapidly
(depending on the
baud rate if serial)
while data is being
sent to the attached
printer.
2. No response 2. Check that the printer is
from printer or random on-line and the cable is
or garbage characters configured properly. Incorrect
are printed. baud rate, parity, or stop bits if
using serial interface.
3. Printed verification 3. Locate Jumper (J1) on PC
has blank line between board and position jumper from
printed lines.
the +5V pin to the center pin.
After the self-test is successfully performed, set SW2 position 5 to “OFF” and press the reset switch.