Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
Sony | CDP70 | UNIT SCRATCHES COMPACT DISC WHILE PLAYING | One of three supporting pins does not go down intermittently,when disc is in for play. Also rubbing the disc gently while playing, itdoes not affect any playing disc. Ten customers with new discs have roundscratches in the middle of circumference. Eve | ||
Sony | CDP70 | UNIT SCRATCHES COMPACT DISC WHILE PLAYING | One of three supporting pins does not go down intermittently,when disc is in for play. Also rubbing the disc gently while playing.It does not affect any playing disc. Ten of customers new discs haveround scratches in the middle of circumference. Event | ||
Sony | CDP70 | DISPLAY INDICATES ALL ZEROS | Display would not function, all zeros displayed at alltimes. All other functions were OK. Inspection revealed no clock pulseson Pin 37, IC106. | ||
Sony | CDP70 | HISS IN LEFT AND RIGHT CHANNELS | There was a hiss in both channels which was present in betweentracks and with the audio. We found the problem to be a dead X103 on theD/A converter -IC109. I was surprised that any audio at all was processedthrough the IC under this condition. This ap | ||
Sony | CDP70 | NO LASER OUTPUT AFTER INSTALL NEW TOP ASS | Assembly is being received with jumper in following positions.(see diagram) | ||
Sony | CDP70 | OPTICAL PICK UP | The original pick-up KSS120C (P/N 8-848-016-01) now changeto KSS121A (P/N X-4910-424-1) does not work in the CDP-70. When replacedwith the new pick-up, new laser diode does not light up. -HQ COMMENTS: Please refer to Supplement No. 1, 1985 CDP-70. Yo | ||
Sony | CDP70 | AUDIO SOUND DISTORTED FOLLOWED BY SHUT-DOWN | Unit would accept disc, do focus search and apparently readTOC. When play mode entered unit would start to play with distortedaudio, then it would stop in a few sec. Viewing eye pattern on scoperevealed distortion. | ||
Sony | CDP70 | SERVICE MANUAL ERRORS | 1) Q102 collector is shown on the schematic to connect toQ101 emitter. It actually is connected to B- as shown on the boardlayout (the emitters of Q101 and Q102 are tied together). 2) C132polarity is shown reversed on the board layout. | ||
Sony | CDP70 | INTERMITTENT DOOR OPERATION | The door would intermittently open and then close again.We found the loading switch S703 to be dirty and causing the problem. | ||
Sony | CDP70 | MOTOR STARTS IN CORRECT DIRECTION, THEN REVERSES & OVERRUNS | Motor starts in correct direction, then reverses and over-runs. | ||
Sony | CDP70 | MOTOR REVERSES AND SPINS BACKWARDS | Motor starts in forward direction, then reverses and spinsbackwards until shutdown. | ||
Sony | CDP70 | INTERMITTENT OPERATION | Sometimes unit works and can align completely but noticewhen door is open, display is out. Measured +5V supply and would loaddown to almost 0VDC when door was open. | ||
Sony | CDP70 | SHORTED LASER DIODE | The laser would not come on. We found the laser diode to beshorted. Also this unit was similar to the circuit found in SupplementI (Nov. 1985) with the exception of RV201 and R212 being omitted. Wewill install these parts and adjust the laser level. | ||
Sony | CDP701ES | OSCILLATION ON FE TEST POINT | When AMed 3 or more tracks the sled would not movean osc. of 5-10 Vpp would be present on the FE test point. | ||
Sony | CDP70 | INCORRECT WIRING IN SERVICE MANUAL | Page 37 of the manual shows incorrect wiring in the area ofthe loading switches connected to IC106 and IC701. Page 32 of the hard-wire diagram does not label two white wires on the loading motor board orthe three wires from S703. The correct wiring and |