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Complete manual with clear schematic diagrams and printed circuit board layouts of two variants of the headset and the transmitter an old and a new version.
Also shows how the headset and the transmitter is opened and how transmitter and receivers can be adjusted and where to measure.
I had no problems to repair the headset using this service manual.
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Excellent printing quality. A complete and very useful manual with all details.
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This is a great site. I placed my order and by the next am it was available for download. Had some problems with some missing copy on some pages. Once I brought the error to the OMC's attention, the issue was resolved. I'll come back again.
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Mi spiace per non poter scrivere in inglese... ma sono veramente soddisfatto del servizio offerto. Grazie..!!
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The quality of this manual is good. It has all schematics and setup information for both the MDS-B3 and the MDS-B4. The scan quality is quite good, all pages are readable, This service manual also contains scans of the operating instructions from the User manual.
Troubleshooting
5-3-10 (N) Check of instantaneous over-current protection of IPM circuit.
Inverter instantaneous over-current protection mode is the mode to be actuated in order to prevent the damage of elements from the peak current of IPM circuit elements. In case that the inverter circuit instantaneous over-current protection mode actuates.
(condition of installation)
�The ventilation is not good because the outdoor unit is installed wrong (the ambient temperature is higher than 50 (°C) ) -> Reinstall the outdoor unit so that the good ventilation can be made. �In case that the operation is made with the cover bent of the outdoor unit. -> Take out the cover. �If two outdoor units are operating face to face, (the bad ventilation is made) -> Reinstall the outdoor unit for the good ventilation. �The air circulation is bad due to the attachment of falling leaves. -> Take away the leaves for the good ventilation. �If the Refrigerant is overcharged. -> Check the amount of Refrigerant.
(Unit defect)
�If the comp is locked. -> Replace the comp. �If the comp is operating without the revolution of fan motor. -> Check the fan motor connector and replace the fan motor. �In case the parts of the control board is damaged. -> Replace simultaneously the inverter control board and the IPM board.
5-3-11 (O) Check of the comp discharge gas temperature and OLP temperature abnormal rise.
If the comp discharge gas temperature and OLP temperature rises higher than a certain level, it protects the circuit. If the comp discharge gas temperature and OLP temperature rises abnormally,
(Condition of installation)
�The ventilation is not good because the outdoor unit is installed wrong (the ambient temperature is higher than 50 (°C) ) -> Reinstall the outdoor unit so that the good ventilation can be made. �In case that the operation is made with the cover bent of the outdoor unit. -> Take out the cover. �If two outdoor units are operating face to face, (the bad ventilation is made) -> Reinstall the outdoor unit for the good ventilation. �The air circulation is bad due to the attachment of falling leaves -> Take away the leaves for the good ventilation. �If the refrigerant is insufficient. -> Fill up the amount of refrigerant.
5-8
Samsung Electronics
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