YV180X_Mainte_E.pdf - 第161页
7 -7 SED8013110 Service Manual Chapter 7 7 T roubleshooting 3. Recognition err ors 3.1 Chip components 45705-D8-00 Refer to Maintenance guide (Basic) Feeder user's manual Chapter 2 Mounter operation manual Correctiv…
7
-6
Service Manual
Chapter 7
SED8013110
7
Troubleshooting
2.2 QFP components
45704-D8-00
Symptom
Mounted
components
always shift
in the same
direction.
Mounting
status is
unstable.
Possible cause
The machine data for
the mount coordinates
(X, Y), moving
camera scale or vision
camera scale is
incorrect.
The components do
not reach the PCB, or
they are excessively
pressed and displaced
on solder.
There are also cases
where the mounting
speed is too fast or
the nozzle is not
securely attached.
The PCB is not
properly clamped on
the conveyor.
Corrective action
Check the mount data. If no problem,
recalibrate the scale of the moving
camera or multi-vision camera and then
perform test-mounting of the
components.
If there is any problem at the instant of
mounting, check the "Body Size Z"
value of the SHAPE INFO. parameters
or the "Mnt Height" value of the PICK
& MOUNT INFO. parameters in the
component information, and make the
corrections if necessary. Also check
that the PCB is clamped in place. Good
results may be obtained by reducing the
"Mount Speed" of the PICK &
MOUNT INFO. parameters.
Also check that the leaf springs used to
hold the nozzle are properly fitted to the
nozzle shaft.
Adjust the height and position of push-
up pins so that the PCB does not warp.
Refer to
3.4&3.5 in
Chapter 4
Mounter
operation
manual
2.1 in
Chapter 1
Mounter
operation
manual
7
-7
SED8013110
Service Manual
Chapter 7
7
Troubleshooting
3. Recognition errors
3.1 Chip components
45705-D8-00
Refer to
Maintenance
guide
(Basic)
Feeder
user's
manual
Chapter 2
Mounter
operation
manual
Corrective action
Wipe the lens surface and half mirror
with a lens cleaner.
If the pickup position has deviated from
the center of the component, the nozzle
tends to pick up the component by the
edge, so check the tape feeder for
operation and installation on the feeder
plate.
Generate a negative pressure for all
heads in MANUAL mode, and press the
nozzles up by finger to check the spring
action. If the nozzle does not return
smoothly, then lubricate. Clean away
dirt or debris from the nozzle as
necessary.
If the SHAPE INFO. parameters are
incorrect, the component cannot be
recognized. Enter correct values for
these parameters.
Similarly, if the component is supplied
in the wrong direction, this also results
in recognition errors. 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" to 90° (or -90°).
Possible cause
Dust or dirt is on the
camera lens.
The nozzle is picking
up the component by
the edge.
The spring-action of
the nozzle does not
move smoothly, or dirt
or debris adheres to the
nozzle tip.
The SHAPE INFO.
parameters in the
component information
are incorrect, or the
component is supplied
in the wrong loading
position with respect to
the pickup angle
setting.
Symptom
Recognition
errors
frequently
occur with
almost all
components.
Recognition
errors
frequently
occur with a
specific
component.
Recognition
errors
frequently
occur with a
specific
head.
Specific
components
cannot be
recognized.
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