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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.
4. TROUBLE SHOOTING GUIDE
TROUBLE
SUCTION POWER IS WEAK
CAUSE
FILTER BAG(PAPER OR CLOTH) IS FULL WITH DUST CLOGGING OR TEAR IN HOSE
COUNTERMEASURE
CHANGE IT WITH NEW ONE OR REMOVE THE DUST REMOVE OBSCTACLE OR REPLACE THE HOSE
DEFECTIVE MOTOR
REPLACE THE MOTOR (SEE 5-2)
CLEANER DOES NOT WORK
BREAKING IN POWER CORD (AT BLADE TIP OR ROOT OF PLUG) DEFECTIVE SLIDE VOLUME LOCATED IN COVER BODY DEFECTIVE PCB ASSEMBLY BREAKING OF CONNECTIONS OR POOR CONTACTS IN CORD REEL ASSEMBLY DEFECTIVE MOTOR BREAKING OF CONNECTIONS IN COVER BODY ASSEMBLY DEFECTIVE SWITCH
REPLACE THE POWER CORD (SEE 5-3)
REPLACE IT (SEE 5-5) REPLACE IT (SEE 5-5) REPAIR (SEE 5-3)
REPLACE IT (SEE 5-2)
REPAIR (SEE 5-5) REPLACE IT (SEE 5-5) REPLACE IT (SEE 5-5)
MOTOR DOES NOT STOP EVEN IF SWITCH
DEFECTIVE PCB ASSEMBLY
TROUBLE
POWER CORD IS NOT WOUND UP
CAUSE
BROKEN REEL SPRING OF CORD REEL POWER CORD BROKE AWAY FROM THE BOBBIN
COUNTERMEASURE
REPLACE IT (SEE 5-3)
REPAIR (SEE 5-3)
CAUTION : BE CAREFUL WHEN BREAKING UP THE CORD REEL, THE REEL SPRING MAY SPRING OUT OF THE SPRING COVER. POWER CORD DOES NOT STOP AT AN ARBITRARY POSITION ABRASION OF THE ROLLER BRAKE OF CORD REEL LEVER SPRING BROKE AWAY FROM THE CORD REEL BRACKET REPLACE THE ROLLER BRAKE (SEE 5-3) REPAIR (SEE 5-3)
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