Dicas Reparação
Modelo - Chassis D7
Pesquisa: D7 Enviar Dica Resolvida
Resultados 253
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | CFDD77 | COVER (B), CHASSIS DAMAGED WHEN CHANGING OPTICS | Servicer complained that cover is destroyed during removal ofoptical block. After installing optical block, then had to order cover. | ||
| Sony | D7 | UNIT POWERS UP - SPINDLE MOTOR/NO TORQUE TO SPIN DISK | Unit powers up, display comes on, FOP tries to focus butspindle motor does not have enough torque to spin disk. | ||
| Sony | CFDD73 | INTERMITTENT SKIPPING / TRACK JUMPING | Unit would intermittently skip and sometimes would not AMS.Upon monitoring sled motor drive voltage, found it to be increasing.Normally, it is about 0.7V. | ||
| Sony | D77 | NO AUDIO | No audio due to loss of -4.7vdc at Q-405 collector. | ||
| Sony | CFDD73 | LOW RECORD/PLAYBACK AUDIO LEVEL WITH EXTERNAL MICROPHONE | When recording with an external microphone in the tape mode,the audio output from the microphone is barely audible. The audio outputis also extremely low on playback. When the unit is in CD, Line in, orRadio mode and the external microphone is connecte | ||
| Sony | CFDD75 | NO TURNTABLE HEIGHT ADJUSTMENT IN SERVICE MANUAL | The turntable and spindle motor are provided as separateparts, not as part of the chassis. When replacing spindle motor, theturntable must be forced off. Replacing the motor, therefore, includesremoving and replacing turntable. There is no adjustment | ||
| Sony | D7 | PART NUMBER MISSING | A part number is needed for the cloth tape used in portable CDplayers to hold down wires in place. -HQ COMMENTS: The part number is 3-831-441-XX. | ||
| Sony | D77 | NOISE BETWEEN SONGS WITH BATTERY PACK | Noise between songs only with battery pack. | ||
| Sony | CFDD77 | SERVICE MANUAL CORRECTION | P40 of manual shows connection to OV ground for FE, TE adj.Should really be connected to 2.5V reference, CN721, pin 10. -HQ COMMENTS: You are correct. The ground input of the oscilloscopeshould be connected to Vref., pin 10 of CN721. We will inform To | ||
| Sony | D7 | PLL OUT OF ADJUSTMENT | Skips with disk defects greater than 400 microns. Found PLLadjusted to free run at 4.19 MHz. | ||
| Sony | CFSD7 | PART NUMBER FOR CONTROL BOARD | Looking for a part number for the control board (w/parts) ifthere is one available. -HQ COMMENTS: Mounted control PCB is no longer available. We can geta blank control PCB from RPC in Tokyo if you want one. Let us know. | ||
| Sony | D7 | MISTRACKS | Unit will not play beyond first track of test disc. Unit willnot advance tracks at times (intermittent). | ||
| Sony | D7 | OPTICAL PICK-UP REPLACEMENT | After replacing optical ass'y, unit not functional or veryintermittent. | ||
| Sony | D7 | SKIPPING | Unit skips. Replaced laser. Now laser stays on in servicemode. When hit play, unit drives sled to outer edge and spindle motorruns fast. -HQ COMMENTS: Laser normally stays on in service mode. With set inservice mode, check all adjustments. Sled sho | ||
| Sony | D7 | UNIT WILL NOT PLAY - PLL NOT CORRECT | PLL only measures 7kHz. Changed IC601 and subboard. -HQ COMMENTS: There are several different PCBs for the D-7. Along withthe board changes are changes in the method of measuring PLL. Pleasecheck supplement S/M. The key is to measure Pin 70 at IC 601 |