I have sometimes answers (work/ not work) from three out of eight sensors on my Roland PAD-80. I opened the casing and when I triggered them from the backside, all are working! It seems to have also two extra sensors inside, connected, but when I triggered these, nothing occurs.I wanna know how to remove the pads and if I can use the two spare sensors to replace the faulty ones. Thanks!
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- Warm Up Three Way Catalytic converter deterioration or malfunction
- Exhaust system leaks
- Loose front or rear HO2Ss
- Faulty front heater O2 sensor
- O2 sensors harness is open or shorted
- O2 sensors poor electrical connection
As the code description implies the P0422 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be replaced to fix the problem. If the P0422 code is combined with other codes, try fixing the other codes first.
C1201 error code means that you have some problem in engine control system.
Possible causes for P0421 error
Warm Up Three Way Catalytic converter deterioration or malfunction
Exhaust system leaks
Loose front or rear HO2Ss
Faulty front heater O2 sensor
O2 sensors harness is open or shorted
O2 sensors poor electrical connection
The P0421 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be replaced to fix the problem.
The Roland Pad 80 has a contrast control, if it's not correctly adjusted, it could cause it to appear all black or all blank.
If the LCD were bad, it's uncommon for both sections to both go out around the same time, since it uses two seperate 7 segment LCD components. About the only way to cause both to go out at about the same time, would be to get the equipment wet, or let it get way too hot or left sitting out in the sun, long enough to dry up the "liquid" part of "Liquid chrystal display".
The procedure at this link shows you a battery replacement procedure that should work for you:http://ztup.com/Roland-D110-Battery-Replacement-Guide.htm You will need to design new user patches if you didn't back them up.
Did you ever get hold of an FP-8 service manual? The weight replacement is relatively simple: The case opens by removal of eight screws, four at each end on the underside. The top then hinges up. Keyboard assembly is removed by first unplugging the two white ribbon connectors at the center, then removing the screws at the front edge (underneath) and the screws (gold) at the back of the assembly (accessible from the top). Keys pop out by spreading the two "wings" at the pivot point, and then the weights (Roland calls them "hammers") lift out. Roland will sell you new ones, but I have no idea whether the replacements are any better than the originals. I've done two of these pianos so far, and have a third waiting to be worked on. I do have a service manual, but I think I downloaded it freebee somewhere.
The other failure mode on this piano is the electolytic coupling caps on the output board - I've replaced all of them on both pianos - don't remember the value offhand.
The blink code you are refering to is : Intermittent or Repaired RH Radiator Primary Crash Sensor Feed/Return Circuit Open , which means your right hand side frontal crash sensor (airbag sensor) is not working, therefore your airbag system is disabled...