QB-V850MINIL, QB-V850MINI Emulator 4. Debugging with In-Circuit method
R20UT0221EJ0400 Rev.4.00
Page 68 of 86
2013.08.30
4.5
Cautions on Using Sockets
This section describes cautions on using sockets such as the target connector and exchange adapter.
The following symbols are used in this section.
•
TC: Target connector
•
EA: Exchange adapter
•
MA: Mount adapter
•
CA: Check pin adapter
•
SA: Space adapter
•
EP: Extension probe
4.5.1
Cautions on inserting/removing sockets
•
When inserting an adapter such as EA, MA, or SA in TC, insert it so that the position of pin 1 (where the corner is
cut) on each adapter matches. Be sure to insert the connectors in the correct direction (so that the positions match).
•
Remove or insert the sockets in the correct direction (see
Figure 4-7
).
•
Be sure to hold the lower (mating) connector or board with your fingers when inserting or removing a socket.
•
Use a bamboo spit or similar object as a tool to remove the connector. Insert the tool between TC and EA and
remove TC in the correction direction as shown in Figure 4-7. If force is applied to the connector in the wrong
direction, the connector will be damaged. If only a metallic object such as a screwdriver is available as leverage,
wrap its tip in a soft cloth.
Figure 4-7. How to Insert/Remove a Socket
4.5.2
Causes of faulty contact of connectors and countermeasures for them
Possible causes of faulty connector contact and countermeasures are listed below.
•
If flux gets inside TC when it is mounted
Thoroughly clean the flux with a solvent such as alcohol. Cleaning must be performed at least 5 to 6 times. If
conduction is still not stable, repeat cleaning.
•
If dirt gets inside the connector
If dirt, such as threads, gets inside the connector, defective conduction occurs. Remove any dirt with a brush.
•
Cautions on using CA, SA, and EP
When CA, SA, or EP is inserted, a very small amount of delay in the signal propagation and capacitance occur.
Thoroughly evaluate these points after CA, SA, or EP is connected to the target system.
