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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.
1-6. Replacement of Main Parts
1-6-2. Replacement of 50-pin connector
1. Loosen the three screws and open the outside panel. 2. Release the locks of CN501 and CN502 on the MB851 board and pull out the flexible card wires. (Refer to Section 1-6-3.)
CN501 CN502 Flexible card wires Screws
4. Remove the two slot-head screws and the two screws (M2 x 3) and remove 50-pin connector. n Do not lose the nuts on both sides of the 50-pin connector.
50-pin bracket
M2 x 3
Slot-head screws N2, TYPE2
50-pin connector N2, TYPE2
5. Desolder from the CN-1556 board and remove the 50pin connector. 6. Solder the new 50-pin connector on the CN-1556 board.
MB-851 board
50 spots
Outside panel Screw
50-pin connector
3. Remove the four screws and remove the 50 PIF assembly together with the flexible card wire from the unit.
M2.6 x 5 M2.6 x 5
CN-1556 board
50 PIF assembly
7. Install the 50 PIF assembly in the reverse order of steps 3 through 6. n When installing the 50 PIF assembly, pull the two flexible card wires toward the outside panel from the clearance between the unit and the MB-851 board. 8. Connect the two flexible card wires to CN501 and CN502 on the MB-851 board. (Refer to Section 1-6-3.)
HDCA-901 MM
1-6 (E)
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