4OM-1625-004_w.pdf - 第335页
4OM-1603 5-4 2. T roubleshooting on Pickup Errors : Chap.5 (2) Machine-Based Factors When a component has no problem, check the main body of the machine. A failure can be tracked by checking if it occurs on a specic vac…
4OM-1603
5-3
2. Troubleshooting on Pickup Errors : Chap.5
2. Troubleshooting on Pickup Errors
2.1 Cause and Remedy of Pickup Errors
(1) Component-Based Factors
When the cause of a failure lies in specic components or lots, the
components must be examined rst of all.
Shown below are the cases of failures whose factors lie in components.
[Factors of Pickup Errors on Component Side]
(1-1) A component adheres to the bottom tape.
(1-2) The shape of a cavity is defective.
(1-3) The shape of a component is defective.
(1-4) A component turns sideways because the tape cavity is too large.
(1-5) The atness of the cavity bottom is defective.
(1-6) Oil or mold lubricant adheres to the bottom of a component.
The failures described in (1-1) through (1-4) have a tendency to occur easily
due to the components packaged in a paper tape and the failures described in
(1-4) through (1-6) due to the components packaged in an embossed tape.
Special caution should be paid to minute components such as 0603 and
1005 types because such components are directly affected by how they are
packaged in the tape.
To determine whether or not the taped components are packaged in good
condition, turn the tape upside down and check to see how the components
fall down from the cavities. If the components fall down freely, it means that
they were packaged in good condition.
The specications of taping are specied in "JIS-C0806". However, as the
detailed regulations are not provided as for the failures described in (1-1)
through (1-6), it is required to ask the component maker about the details
when the components are purchased.
ExemplicationofTroubledTapedComponentsF4E2
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2. Troubleshooting on Pickup Errors : Chap.5
(2) Machine-Based Factors
When a component has no problem, check the main body of the machine.
A failure can be tracked by checking if it occurs on a specic vacuum nozzle
or feeder slot No. (lane).
(2-1) Whenthevacuumnozzlehas
beenspecied:
Check the following items for the specied vacuum nozzle.
•
Check if the vacuum nozzle is abnormal.
•
Check if the vacuum line is abnormal.
•
Check if the vacuum ON/OFF valve is abnormal.
•
Check if the linear measure sensor is abnormal.
When a factory is dusty or a lot of components packaged in paper tapes are
used, the vacuum nozzles and their lters get dirty easily.
Therefore, it becomes important to clean the vacuum nozzles and lters
periodically.
Reference
Refer to "2.2 (1) Frequent Pickup Errors on Specic Vacuum Nozzle" in
"Chapter 5" for the troubleshooting.
(2-2) WhenthefeederslotNo.hasbeenspecied:
Check the following items for the specied feeder slot No. (tape feeder).
•
Check if the tape feeder is loaded correctly with components.
•
Check if the top cover tape is peeled off normally.
•
Check if the data related to the component picks is norma
l.
Reference
Refer to "2.2 (2) Frequent Pickup Errors on Specic Feeder Slot No." in
"Chapter 5" for the troubleshooting.
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2. Troubleshooting on Pickup Errors : Chap.5
2.2 Symptom-Based Troubleshooting
(1) FrequentPickupErrorsonSpecicVacuumNozzle
Dirty Vacuum
Nozzle
Frequent Pick-Up Errors
on Specific Nozzle
Operation Check
Cleaning
NG
Cleaning
Replacement
Cleaning
OK
NG
NG
NG
NG
OK
OK
OK
OK
Clogged Hole of
Vacuum Nozzle
NG
Nicks on Linear Measure
Sensor
Replacement
Dirty Linear Measure
Sensor
Replacement
Note (b)
Dirty and Clogged
Vacuum Filter
Movement of Vacuum
ON/OFF Valve
OK
F4E3
Note
(a) Refer to "Chapter 1 Maintenance" for the cleaning and replacement
procedures.
(b) Check the vacuum ON/OFF switching in the [OutP Chk] button in the
"INP/OUT" window. (Operation Sequence: [MAINT] Button → [DVC
Check] Button → [InP/OutP] button.
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