Dicas Reparação




Modelo - Chassis XR70


Pesquisa: XR70 Enviar Dica Resolvida
Resultados 26
Pedir dica reparação
MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyXR7000
DEAD UNIT No B+ to radio tape switch (S-902).
SonyXR7000
NO AMS FUNCTION OR AUDIO OUTPUT No AMS. No auto reverse. PM1 and Q801 were both fried.
SonyXR70
MISSING PART NUMBER The service manual does not give the part number for theCNP-901-902 cable and connector assembly for this unit. I have a unitthat needs these cables. -HQ COMMENTS: These connectors are shown on page 25 of the S/M(Ref. #16). The P/N is 1-555-525-00.
SonyXR70
INCORRECT REF. # - PAGE 26; REF. #60 Ref. number wrong. Page 26 (Ref. #60) is showing a cable(with connector). The cable (with connector) is Ref. #751-555-488-00. -HQ COMMENTS: We will issue a service bulletin.
SonyXR70
INTERMITTENT DISPLAY Display int. especially when first turned on. Radio freq.display would blink in and out with the clock display. FM LED would bevery dim then with time become gradually brighter. Radio display wouldstabilize and radio come on. Found irregular low outp
SonyXR70
NOISE ON THE OUTPUTS IN TAPE MODE Every XR-70 I have worked on has a motor noise in tape modethat is noticeable at low or no volume. -HQ COMMENTS: Head amp may be picking up motor noise as they are locatedclose to each other. Try a shield around the motor.
SonyXR70
PINCH ROLLER SHAFT Pinch roller shaft loosening from chassis assy causing to eattapes and have speed changes.
SonyXR70
DEFECTIVE Q804 Tape will not load (drop) properly every time it's loaded.Lever assy in question cocks the drop mechanism when it catches onthreading arm shaft (P/N 3-573-870-0). -HQ COMMENTS: When the cassette springs back out a little after beingloaded into the carri
SonyXR70
TAB ADJUSTMENT NEEDED It will not accept tape. Cause: Eject lever (#387) fails toengage the pin on (#385) when tape is inserted.
SonyXR70
ERROR IN MANUAL Terminal marking for Q303 as shown on PC board incorrect(Emitter and base leads reversed.) The picture on Page 6 of the servicemanual (Supplement #1) is correct but it does not match the silk screenon the PC board.
SonyXR70
IMPROVING AMS RESPONSE AMS would not operate for tapes with less than 4 to 6 secondsof silence. Problem appears most often when rewinding close to thebeginning of the tape.


Assistência TécnicaAs dicas apresentadas destinam-se a técnicos de eletrónica, a tentativa de reparação ou assistência sem ter conhecimentos de eletricidade e eletrónica, podem provocar danos mais graves aos equipamentos e, devido a tensões muito elevadas em alguns circuitos, graves danos fisicos que podem constituir um risco em determinadas reparações.

Não arrisque reparar equipamentos com tensões elevadas se não tiver conhecimentos técnicos para o fazer em segurança.

Verifique se o esquema está disponível na área de downloads