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7 -9 SED8013110 Service Manual Chapter 7 7 T roubleshooting 3.3 Mark 45707-C0-00 Symptom Fiducial mark cannot be recognized. Fiducial mark recognition is not reliable. In FINE mode, the recognition position cannot conver…
7
-8
Service Manual
Chapter 7
SED8013110
7
Troubleshooting
3.2 QFP components
45706-D8-00
Possible cause
The component
information is
incorrect.
The direction for
supplying the
component is not
correct. (If the supply
direction is wrong,
the number of leads
is reversed between
the length and width
sides, causing a
recognition error
even if the SHAPE
data is correct.)
The vision camera
light selection is
incorrect.
Corrective action
Check the parameter settings in the
component information, and perform
the "PARAM. SEARCH" command
in the Adjust Assistant mode.
The "Pick Angle deg" (used for
component recognition reference) of
the PICK & MOUNT INFO.
parameters in the component database
is specified as 0°, assuming that
components are supplied in the
horizontally long loading position. So,
if the components are supplied in a
vertically long loading position, set
"Pick Angle deg" in the component
information to 90° (or -90°).
Check that "Lighting Selection" of the
VISION INFO. parameters is set to
"Main + Coax".
Symptom
Recognition
errors
frequently
occur.
Components
cannot be
recognized.
Refer to
Mounter
operation
manual
Mounter
operation
manual
7
-9
SED8013110
Service Manual
Chapter 7
7
Troubleshooting
3.3 Mark
45707-C0-00
Symptom
Fiducial mark
cannot be
recognized.
Fiducial mark
recognition is
not reliable.
In FINE
mode, the
recognition
position
cannot
converge on
the specified
point.
Fiducial mark
recognition is
not reliable.
Possible cause
The PCB is not
clamped securely, or
the mark information
data is incorrect, or
the mark shape or
size is outside the
specifications.
A solder leveler mark
or low-contrast mark
cannot be recognized
reliably.
The convergence
conditions are too
tight.
The FIDUCIAL SEL
option was set to
"NotUse" when
setting teaching
Corrective action
Check that the PCB is clamped securely
. If no problem, check the mark data
and optimize the threshold level with
the "PRAM. SEARCH" command in
the Adjust Assistant mode so that the
mark can be clearly viewed. If there is
any noise around the mark, narrow the
mark search area or cut the noise by
adjusting the Cut Outer Noise
parameter in the mark information.
Readjust the moving camera lighting in
the mark information, then optimize the
threshold level with the "PRAM.
SEARCH" command in the Adjust
Assistant mode so that the mark can be
clearly viewed.
Relieve the convergence conditions in
MCH_DATA mode or set the
"Algorithm Type" of the Vision Info.
parameters to "Normal".
Set the FIDUCIAL SEL option to
"Use" when setting teaching conditions,
then reperform fiducial mark
recognition.
Refer to
Mounter
operation
manual
Mounter
operation
manual
7
-10
Service Manual
Chapter 7
SED8013110
7
Troubleshooting
4. Conveyor
45708-C0-00
Symptom
The PCB hits
hard against the
main stopper
when it is
conveyed.
The PCB does
not reach the
main stopper
when it is
conveyed.
PCB transfer
error (PCB
clamping error)
occurs when a
thick PCB is
conveyed.
After the PCB
has been
conveyed in the
mounting
position, the
pins will not rise
to secure the
PCB. (The
conveyor keeps
turning.)
The conveyor
width cannot be
changed.
A PCB which
could be
detected before
being
transferred to
the mounting
position cannot
be detected
after transfer.
Possible cause
The soft stop does
not take effect.
The soft stop has too
much effect.
The locate pin will
not rise adequately
for a thick PCB or a
PCB having a small
reference hole, so
that the sensor
remains turned off.
The sensor at the
PCB clamping
position is defective,
or the PCB has a
cutout area just
above the sensor so
the sensor cannot
detect the PCB.
A PCB is still on the
conveyor.
The PCB is still in
the mounting
position on the
conveyor, but is not
detected with the
PCB sensor.
Corrective action
Open the front lower right panel of the
machine, and you will see the
adjustment screws for conveyor speed.
Turn the "L" screw to the left to
slightly reduce conveyor speed.
Open the front lower right panel of the
machine, and you will see the
adjustment screws for conveyor speed.
Turn the "L" screw to the right to
slightly increase conveyor speed.
Loosen the screw for the locate pin
sensor and slightly lower its position.
Then, check that the sensor turns on
when the PCB is secured in place.
Check the sensor operation in
MANUAL mode (input monitor). If
the sensor is defective, replace it. If
sensitivity seems to be low, adjust the
sensor installation height or angle.
Remove the PCB and then change the
conveyor width again.
Adjust the position of the PCB sensor
so that it detects the PCB correctly. If
the PCB still cannot be transferred
properly, check the conveyor unit
setups and/or PCB data settings and
make corrections as necessary.
Refer to
1.2 in
Chapter 6
1.2 in
Chapter 6
1.5 in
Chapter 6
1.5 in
Chapter 6
1.1 in
Chapter 6