EUKYX-199-4110_G5S2_Instruction_Vol4_E - 第355页
EUKYX 5-7 199-4100 2.2 Symptom-Based T roubleshooting Front Hook Deformation Suppressor Lift/Deformation/ Component adhesion on inner side Sprocket Cover tape/ T ake-up gear Dirt/Component adhesion Dirt/Component adhesio…
EUKYX
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2.2 Symptom-Based Troubleshooting
(2) Frequent Pickup Errors on Specific Feeder Slot No.
Frequent Pick-Up Errors
on Specific Feeder Slot No.
Operation Check
Correction
OK
NG
Note (b)
OK
OK
NG
Note (a)
Feeder Check
Collation
with Component
Library Data
Verification of Feeder (B)
Offset Data
Adjustment
F4E4
(a) See Figs. “F4E5” and “F4E6” on the next page for the checkpoints on tape feeders.
(b) When a tape feeder loaded with different components is installed, the pickup position
(data) must be checked and the feeder (B) offset data must be cleared or modified for
the new components after the program change operation because it is prepared for the
previous components.
Note
EUKYX
5-7199-4100
2.2 Symptom-Based Troubleshooting
Front Hook
Deformation
Suppressor
Lift/Deformation/
Component adhesion
on inner side
Sprocket
Cover tape/
Take-up gear
Dirt/Component
adhesion
Dirt/Component
adhesion
Pickup Position
Positioning/Positional
deviation
Peeling Area
Gap/Deformation/Dirt
F4E5
Threading of cover tape
Cover tape is set correctly.
Dirt/Component
adhesion
Cover tape/
Take-up gear
F4E6
EUKYX
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3. Troubleshooting on Placement Errors
3. Troubleshooting on Placement Errors
3.1 Cause and Remedy of Placement Errors
(1) Positional and Angular Deviations of Component Placement
(1-1) Situational Grasp of Error Generation
Positional and angular deviations may be generated in either Process C or D through E. See Fig.
“F4E1”.
By placing a component on the PCB where a double-faced adhesive tape is affixed, it can be
checked and determined in which process positional and angular deviations are generated.
When a positional deviation is generated on the double-faced tape, it indicates that positional and
angular deviations occur in Process C.
When no positional deviation is generated, it means that positional and angular deviations occur in
Process D or E.
(1-2) Positional and Angular Deviations in Process C
When a positional deviation is generated due to the movement of the head after component
recognition or a rotational deviation by placement angle correction, the deviation may be caused
mainly by the following two factors.
• Deterioration of Vacuum Suction Force
• Vibration or Shock during Nozzle (Head) Movement
When one of the above factors exists, unstable components (components that cannot be picked up
in stable condition) such as those shown in “F4E7” are directly affected. When a positional
deviation is generated on the components (the components of the same type that have been used in
the past actual production), check for the above-described factors.
As for vacuum suction force, check the nozzle and the vacuum line.
As for vibration during nozzle movement, check the related spots in the range of Process C.
Positional/Angular deviations of component placement (1)
Resistor, Coil, LED, etc.,
with round,protruded, or
smooth upper surface
Capacitor, etc.,
whose electrodes stick out,
causing vacuum leak
Variable resistor, etc.,
that is picked up in
unstable condition
F4E7
When there is a protruding portion on the upper surface of a component, the lower surface of
the vacuum nozzle may be worn out, causing an error during the teaching operation through
component recognition lighting.
Note