2500_Users_Manual.pdf - 第160页
Preven tive Maint enance 5-6 ProMa ster 25 00 U ser Ma nual If the device programs without errors, the PE goes to a verify cy cle. Most semiconductor m anufacture rs specify sett ing the device V CC to two different leve…
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ProMaster 2500 User Manual 5-5
•
Security fuse check
—Some devices have a security fuse feature that,
when programmed, prevents the reading of the main fuse pattern.
Some semiconductor manufacturers allow the programmer to check
the fuse before trying to program the fuses in the main array. If the
security fuse is blown, the device cannot be read or programmed and
TaskLink displays
SECURITY FUSE VIOLATION
.
•
Check silicon ID
—Many devices have internal identification
numbers (an electronic I.D.) that the PE can read. These numbers
allow the PE to determine the manufacturer of the device, the part
number, and the type. For example, if the Task identifies a device
from manufacturer A (requiring a specific programming algorithm)
and a tube of devices from manufacturer B (requiring a different
programming algorithm) is mistakenly inserted, TaskLink displays
ELECTRONIC ID ERROR
and the handler routes these devices to an
output tube specified in the Task setup before a programming pulse
has been applied.
•
Blank check
—This checks to ensure that all the fuses in the device’s
main array are blank (unprogrammed). Most devices allow the
programming cycle to continue even when a programmed fuse has
been detected. If the Task is configured to reject devices with any
programmed fuses, TaskLink displays
NON-BLANK
and the handler
routes these devices to an output tube specified in the Task setup.
•
Illegal bit check
—Some devices that are programmable by the
system are not electrically erasable. The PE can erase only electrically
erasable devices. The PE checks each fuse to make sure the fuse is
unprogrammed (blank). If the PE finds a programmed fuse in the
device and its RAM data indicates that the fuse should be
unprogrammed, TaskLink displays
ILLEGAL BIT
. Most erasable/
programmable devices cannot be erased in the socket. The system
routes these devices to an output tube specified in the binning setup.
If the device passes all these pre-programming tests, the PE begins
programming, using the manufacturer’s programming algorithm. Some
algorithms require that the PE apply a single programming pulse to the
fuse, and then immediately check the fuse to see if it’s programmed
before continuing. This type of algorithm normally specifies a maximum
number of times that the PE can try to program a fuse. If the fuse fails to
program after the maximum number of pulses have been applied,
TaskLink fails the device and displays
PROGRAM FAIL
.
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5-6 ProMaster 2500 User Manual
If the device programs without errors, the PE goes to a verify cycle. Most
semiconductor manufacturers specify setting the device V
CC
to two
different levels during the device verify cycle, one above and the other
below the nominal operating V
CC
. All fuses in the device are verified at
each level. This tests the device to make certain that the correct data is
read when the device’s V
CC
pin is set slightly below and above the
nominal V
CC
level. The PE sets the device’s V
CC
pin to the specified low
V
CC
level and verifies all the fuses in the device. It then sets V
CC
to the
high level and checks all fuses a second time. If one fuse does not pass
this test when V
CC
is set to the low level, TaskLink displays
VERIFY
FAIL, PASS1
. If the fuse test passes with V
CC
low but fails to verify when
V
CC
is set to its high level, TaskLink displays
VERIFY FAIL, PASS 2
.
When the device passes all these tests, the PE sends a “pass” message to
TaskLink, and the device count in the System Log is advanced. TaskLink
in turn sends a “pass” category signal to the handler. The handler uses
this category status to determine whether to apply a label, and which of
the two output tubes to use.
Device Moves to
Labeler
If the device programmed correctly, and labeling has been selected in the
task, the beam moves the device to the labeler. If the device failed
programming, the beam places the device in the failed device output
track.
Device Is Labeled
The labeler prints a label and the labeler motor advances it between the
platen and the press bearings, into position to be applied to the next
device. The beam pulls the device across the application plate and press
bearings, and the liner wraps around the platen at an angle that allows
the label to peel off. The label is applied to the device as the beam moves
the device forward and past the peeled off label. The label drive motor
and the ADC optic move the next label into position for printing.
Device Moves into
Receiving Tube
The beam moves the device to the “passed” output track and releases it.
The default designation for the passed output track is output track 1 (see
Figure 5-1). The device release optic detects the device in the track and
the output orbital motor agitates the output orbital assembly, helping the
devices slide into the tube. Devices are also helped into the tube by air
triggered by output track air solenoid 3.
Output tube optics (12 and 14 in Figure 5-1) detect the devices as they
enter the tube. The 2500 counts the devices as they pass between the
output tube optics. When the device count reaches the number set in the
Parts/Tube
parameter in the task, operation stops and the handler
displays
CATEGORY X BIN NOT AVAILABLE
. Operation continues when a
microswitch on the output tube clamp toggles, indicating to the handler
that the full tube was removed and an empty receiving tube has been
inserted.
The following sections describe major 2500 subsystems in greater detail.
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ProMaster 2500 User Manual 5-7
Optics
Optics detect and monitor the location of devices, the movement and
position of the beam, labeler movement, orbital motor positions, label
position on the liner (the translucent label backing material), and position
of the ribbon and ribbon pinch roller in the thermal printer (25 and 26 in
Figure 5-1). The optics are mounted in pairs at various places on the
handler. Each pair of optics is made up of an infrared light-emitting
device (emitter) in line with a light-sensitive collector.
All emitters are of two standard types and can be exchanged with like
emitters from any location during troubleshooting. Emitters are
identified by red-and-black or blue-and-black wires crimped to a slide-on
connector. Collectors are identified by blue-and-yellow or red-and-
yellow wires.
Track Optics
The track optics monitor the presence and movement of devices in the
tracks.
Positioning Optics
The reference position optic (17 in Figure 5-1) detects when the beam is at
the far right position and sets the encoder to “0,” which establishes the
starting position of the beam.
Optics 3 and 4 detect the vertical position of the beam.
ADC Label Calibration
Optic
The ADC optic on the dot matrix and thermal label printers senses the
position of labels on the liner so they are positioned properly for the print
head and applied correctly to the device. This optic pair detects the
presence of a label by using the liner as a reference. During label
calibration, light from the emitter passing through the liner is sensed by
the optic collector. As a label on the liner travels between the optic pair,
the decreased light level is detected. When the amount of light increases
again, the ADC optic interprets that change as the end of the label.
Label Sensing Optic
The label-sensing optic on the dot matrix label printer monitors the label
liner and detects when the 2500 runs out of labels.
Switches
A mercury switch on the top cover senses when the hood is open and
causes the 2500 to display a warning message. The 2500 will operate with
the hood up only when you are running the motor diagnostic tests.
A mercury switch on the main plate senses when it is in the raised
position.
A microswitch on the input tube clamp detects the presence of an input
tube (19 in Figure 5-1), and each of the output tube clamps have a
microswitch that detects the presence of an output tube (20 and 21 in
Figure 5-1).
Switches on the front and back side of the programming module engage
when it is properly installed. If the switches do not engage, an error will
be displayed.
Motors
Stepper motors are used on the 2500 to control the movement and
labeling of devices.