Dicas Reparação
Modelo - Chassis DT4
Pesquisa: DT4 Enviar Dica Resolvida
Resultados 11
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV9DT40 | DEAD, REPLACED IC601 | Had voltage going to IC-601 but no osc. therefore no B+out. | ||
| Sony | DT4 | TUNER IS ALWAYS TURNED ON - REPLACE Q-307,P/N 8-729-800-36. | The tuner always stays on. Q307 switching transistor isdefective. | ||
| Sony | DT4 | STATIC OR CUTING OUT OF AUDIO - PLACE TAPE OVER RV-301 | Static or cutting out of audio in radio mode. | ||
| Sony | DT4 | PART NUMBER FOR CHUCKING PLATE NOT LISTED IN S/M | The part number for the chucking plate located on theunderneath side of the lid is not listed in the service manual. The lidassembly Ref. 110 does not contain the chucking plate. | ||
| Sony | DT4 | SLED GEARS JAMMING | We have seen 5 or 6 D2, D4 or DT4 models with sled gearsjammed on new motor assembly (X-264-153-72). Perhaps the FOP is draggingon the shaft (Ref. 201) and causing the gears to move out of place. Also,I believe that if the rack gear (Ref. 203) is inser | ||
| Sony | DT4 | PRODUCTION CHANGE IN SPINDLE MOTOR ASSEMBLY | I have noticed that newer models have new motor assemblies(X-264-153-72) installed from manufacturer. They also have a new MD cover(Ref. No. 73) with a different finish. Do models with new MD covers allhave new motor assemblies? Or do you have a list | ||
| Sony | DT4 | PART NUMBER FOR CARRYING CASE | The part number listed in the service manual is for the D-4,not D-T4. The one for the D-T4 has a clear window in the top so the tunerscale can be seen. It also has a cut-out for the tuning knob. What isthe correct part number? -HQ COMMENTS: To Tokyo: | ||
| Sony | DT4 | PROCEDURE TO ELIMINATE GEAR CHATTERING | Gears will jump or chatter at about the fifth or sixth track. | ||
| Sony | DT4 | PLL FREE RUN FREQUENCY IS NOT CORRECT | Tested eight units with the following PLL free run frequen-cies:4.350 MHz, 4.342MHz, 4.342MHz, 4.349MHz, 4.355MHz, 4.346MHz, 4.355MHz,4.367MHz. In these units there is intermittent servo lock or noise inaudio. What should PLL frequency be? -HQ COMMENT | ||
| Sony | DT4 | NO LASER IN NEW OPTICAL DEVICE | There is no laser in a new optical pick-up device. Pin 9 andpin 8 are shorted in factory. All new FOP (optical pick-up devices) havethe same problem. | ||
| Sony | DT4 | UNIT WOULD NOT PLAY INTERMITTENTLY; MAKES CHATTERING NOISE | Unit would intermittently chatter which sounded like lensfocusing. Replaced optical to no avail. Found rack was binding and wouldcause gear to slip a tooth. |