Q: We just acquired a used RC5C+ and it displays Error 11 after spinning for a while, which indicates that a tachometer fault. Can someone advise on how to resolve this issue?
A: I would check for dust/debris on the photo tachometer and check for loose connections. If problem remains, replace the tachometer.
A: Error 11 in the service manual says, “TACHOMETER ERROR. The computer detected changes in RPM beyond the normal range, indicating that the tachometer input frequency is unstable. The condition clears and the light goes out if the problem is momentary. If the condition persists, check that the tachometer interrupter disc is centered and that no teeth are broken off or bent. Check for intermittent connections. Verify that there is no dust or debris on the photo coupled interrupter.”
A: RC-5C+ units may have either the brush or brushless motors in them. First, you need to identify which motor is in the unit. If it has the brush motor, you will see the interrupter disc and the tachometer pickups (hall effects) that the others are referring to. These items are supposed to be protected under a dust cover. If the unit has the brushless motor, you may have a motor issue … I would definitely check cabling first.
Q: The system reads “re-boot to restore the functionality’’ US_ IMG_24
A: My manual for Aplio XG says for US_IMG_24 – The voltage monitor on RC PWB detects abnormality of the transmission voltage. It could be either the PSA or RC board.
A: The analog power supply, or PSA, is a fairly common failure on these systems. To replace the PSA, remove the left cover by removing 2 screws at the bottom and pulling the bottom out and up. Then remove all the cables connected to the AC-DC assembly, remove 4 screws and pull the AC-DC power supply out. Remove the cable from the fan box, loosen 3 screws and remove the assembly. Now, you can remove the 3 screws on top of the PSA and 2 screws from the bottom, and then grab the handles on the top and bottom of the PSA and pull it out. After replacing the PSA, the SCW TX calibration needs to be performed. This requires entering commands using the service tools, to stop the ultrasound application, run the calibration utility, and then restart the application.
Q: Intermittent Error 83, says something about the light source. Has anybody had this a error and do you know what causes it?
A: Error 83 states the thermal fuse for the gate valve is open. It most likely needs to be replaced.
A: Gate valve thermal fuse should be resettable. Depending on vintage of the unit.
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