Dicas Reparação




Modelo - Chassis MZR2


Pesquisa: MZR2 Enviar Dica Resolvida
Resultados 35
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyMZR2
WON'T PLAY/RECORD M-O DISC (FOUND M-O TEMP DATA RE-SET TO 0) The unit would not play or record M-O discs. Have found thatabout 8% of the repairs to this model were for this problem.
SonyMZR2
UNUSUAL CHARACTERS IN DISPLAY Unit had unusudal characters in display. (S 02E898)
SonyMZR2
UNIT WON'T PLAY (SLED MOTOR NOT RUNNING) FOUND TC509 BAD Sled would not run in test mode. Found singals entering pin37 of IC509, but no output to drive sled motor.
SonyMZR2
PART NUMBER CORRECTIONS: LINE OUT JACK, MIC-PLUG IN PWR JACK The part numbers shown in the service manual for J301 and J303are reversed.
SonyMZR2
DISTORTED LINE INPUT Record input distorted in left channel, line in only. Foundsignal looked ok at both input to IC303 but DC level at pin 3 too low, .6vshould be 2.2v.
SonyMZR2
LINE OUT, AUDIO Unit had no line out. -SOLUTION :LF304 filter open, replaced.
SonyMZR2
WON'T READ DISCS, STEPPER MOTOR OPERATES CONTINUOUSLY The unit will not read discs, and the stepper motor andassociated gears operate continuously. This problem occurs just prior tothe rechargeable battery voltage falling below the usable level.
SonyMZR2
DISTORTED AUDIO ON PLAYBACK, COUNTER FROZEN, FOUND IC603 BAD Audio distorted and counter is frozen during playback. Thesound is the same in test mode 111.
SonyMZR2
NO PLAY OR RECORD MAY BE CAUSED BY OPEN L509 ON MAIN BOARD) The unit does not play or record.
SonyMZR2
NOISY RECORDING MADE FROM MIC INPUT (SEE AUDIO BULLETIN 342) Recordings made from the MIC input may be noisy.
SonyMZR2
PREVENTING DAMAGE TO DC-DC CONVERTER FLEX CABLE The flex cable on the DC-DC converter may be damaged if careis not taken during disassembly of the unit.
SonyMZR2
NO PLAY OR FOCUS SEARCH (REPLACED MOTOR M901) No focus search. Motor had pulses going to it, and measuredfine, but didn't spin freely.
SonyMZR2
WON'T PLAY OUTER TRACK (FOUND HINGE HOLDER ON REF 706 LOOSE) Will not track on outside tracks, and will not turn off,unless you are on a track that is playing.
SonyMZR2
NO AUDIO FROM LINE OUT JACK - REPLACED MAIN BOARD Intermittent audio from line out jack left channel only.Found extremely thin, very difficult to see, crack along line out jack.Also found several intermittent solder connects and feed thrus whiletracing audio back thru main board from Q102, 202 to IC311,
SonyMZR2
INTERMITTENT POWER FROM ADAPTOR - RESOLDERED CN801 Intermittent power to unit when using AC adaptor, found flexboard that runs from D-D converter to CN801 on main board had brokenconnections on D-D conv. side.


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.

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