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RM-1xxx-common fault-Bull


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TechInfo Sheet                                                                   fax: 01344 853689

Audio Visual                                           email: [email protected]

Product Group: Audio                        Model: RM1100
Date: 21/04/99                         Revision No: 02                   Document No: 01
Subject: Common Faults


1.    SYMPTOM:           Plunger not operating on tape deck (solenoid not firing, so the tape
                         plays fast or not at all), unit mutes on cassette.

      REMEDY:            For RM1100 and RM1200
                         Link Pin 1 CN107 to Pin 6 CN105 (through-board connections poor).


2.    SYMPTOM:           Motor boating (power surges) on output.

      REMEDY:            For RM1100/1200/1300.
                         Link Pin 6 CN106 to ground (through-board connectors not good).


3.    SYMPTOM:           No sound on radio and tape (either one channel or both).

      REMEDY:            Replace muting transistors Q8, Q9, Q10, Q11.


4.    SYMPTOM:           Not tuning up/down, other functions OK.

      REMEDY:            Check Pins 10 and 11 for up/down logic, if OK micro faulty.




Panasonic CS U.K.                                                        Document No: 01
                                                                        Model No RM1100
                                                 1



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