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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyITA200EATS TAPES - REPLACE MECHANICAL DECK (REF 51) Found spindle sticks and causes tape to skip/stop, eats tapes.
SonyITA200NO MECHANICAL MOTION - ADJUST HEAD HRPE301 No mechanical motion. In Play mode, tape is seated slant whenmech is in motion.
SonyITA200MEMO OR PLAYBACK CUTS OFF AFTER 3 SEC - REPLACE REF 53 Memo or playback cuts off after 3 seconds. Found PH301(sensor) defective - constant high on reel
SonyITA200INTERMITTENTLY DIALS WRONG NUMBER - REPLACE DIALER IC101 Unit would intermittently dial wrong phone number. Foundthe #5 button would frequently dial at the #2. This would happen over 50%of the time.
SonyITA100HIGH PITCHED WHINE IN HANDSET Whine in Handset.
SonyITA100NO OGM RECORDING - RESOLDER R314. Unit will not record OGM greetings. Checked IC306 pin/ 16VCCA, missing +5.0v. Found R314 cold solder.
SonyITA100NO TONE DIALING AND NO SPEED DIAL - RESOLDER R128. Pulse dialing OK but no tone dialing. R128 was coldsoldered. R128 is in series with the tone dial output of IC101 pin/16(DTMF output).
SonyITA100NO ANSWERING MACHINE FUNCTION (UNIT LOCKS UP) - IC303 DEF. There is no answering machine functiom (unit locks up). IC303was defective.Found crack in top cabinet boss for tape deck
SonyITA100NO ANSWERING MACHINE FUNCTION - REPLACE IC304, P/N 875926072 No oscillation at X301. I checked voltage detector IC304input = 6v but output = 2.9v. IC304 had a defective output.
SonyITA100NO OGM OR DISTORTED OGM - REPLACE MIC301, P/N 1-542-161-11 No OGM or distorted OGM. MIC301 was worn out.
SonyITA100NO RING, NO CONNECT - REPLACE FUSE F101, P/N 1-532-866-11 No ring and no connect. Found fuse F101 open.
SonyITA100NO PART # OF TAPE CLIP FOR MECH 51 No tape clip (spring) part number @ service manual.
SonyITA100NO CONNECT - REPLACE Q102, P/N 8-729-022-86 No connect. Found Q102 collector and emitter shorted.
SonyITA100NO MECH MOTION AND NO OGM GREETING - REPLACE IC401 No Mechanical motion and no OGM. Input VCC to regulatorIC309/pin 3 was 5 volts instead of 11 volts, therefore it was losing DCvoltage. Isolated IC401 pin 9 to 11 and IC309/pin 3 went up to 11v.Before it could not record OGM greeting, after isolation it r
SonyITA100NO AUDIO - REPAIR LIFTED TRACE AT C334 No audio. Found lifted trace @ C334 connection.



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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