panasonic RM-1xxx-common fault-Bull free download

File name RM-1xxx-common fault-Bull.pdf

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