| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | CDX4090 | WON'T LOAD DISCS (FOUND SPRING REF. 103 OUT OF POSITION) | The unit would not load discs. | ||
| Sony | CDX4090 | WILL NOT READ DISCS (FOUND FOREIGN MATERIAL IN SLED SHAFT) | The unit would not read discs. | ||
| Sony | CDX4090 | DEAD (FOUND BAD CONNECTIONS ON POWER CONNECTOR CNP501) | Unit was dead. | ||
| Sony | CDX4090 | SKIPPING, ERRATIC CD OPERATION (SAW BROKEN CONNECTIONS Q520) | The unit would skip, and also exhibited erratic operation suchas randomly ejecting discs. | ||
| Sony | CDX4090 | WOULD NOT EJECT DISCS (FOUND SERVO MCB SCREW JAMMING MECH) | The unit loaded and played the disc, and the disc stoppedplaying when the eject button was pressed, but the unit would not ejectthe disc. | ||
| Sony | CDX4090 | WILL NOT ACCEPT DISCS (FOUND D523 AND Q520 DEFECTICE) | The unit would not accept discs. | ||
| Sony | CDX4090 | WON'T PLAY DISCS (FOUND BROKEN DAMPER SHAFT) | The unit would not play discs. | ||
| Sony | CDX4090 | SOME FUNCTION KEYS NOT WORKING PROPERLY (FOUND OPEN TRACE) | Some function keys were not working correctly. | ||
| Sony | CDX4090 | NO DISPLAY OR ILLUMINATION (FOUND Q511 DEFECTIVE) | The unit had no display and no illumination. SOLUTION: Replacing Q511, p/n 8-729-903-46 restored normal operation. | ||
| Sony | CDX4090 | POOR TUNER RECEPTION (REPLACED TUNER PACK TU1) | The unit had poor tuner reception. | ||
| Sony | CDX4090 | INTERMITTENTLY WON'T READ TOC (FOUND LIMIT SWITCH DEFECTIVE) | The unit would intermittently not read the discs. | ||
| Sony | CDX4090 | DISCS WON'T LOAD/EJECT (FOUND SLIDER REF. 124 BROKEN) | Unit will not load or eject discs. | ||
| Sony | CDX4090 | CD NOT WORKING (FOUND ST LEVER REF 136 OUT OF PLACE) | CD section not working. | ||
| Sony | CDX4090 | SKIPS (FOUND RV1 AND RV2 NEEDED ADJUSTMENT; OPTICS WERE OK) | Unit skipping. | ||
| Sony | CDX4090 | NO CD FUNCTIONS, TUNER WORKS OK (FOUND Q520 AND D523 BAD) | Radio works, CD does not work. |