Dicas Reparação




Modelo - Chassis DTC700


Pesquisa: DTC700 Enviar Dica Resolvida
Resultados 25
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(Chassis)
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SonyDTC700
DOOR IS ALWAYS IN OPEN MODE, IC312 FAILED - REPLACED IC312 IC312 defective, pin 28 IC312 has 4.7v flashing on and offin cycle of 1 second. Cassette door open all the time. I hit closebutton it closes after 1 second it opens and stays open.
SonyDTC700
INTERMITTENT NOISE - ADDED HEAVY GRND WIRE Reference to FPR's # N2566 & N1993. After replacing IC932 theToshiba regulator still had only 4.7VDC output pin 3. Found ground pin 2to be at -0.2VDC.This was caused by resistance in yellow wire from CN931to CN391 and plug/iacks.
SonyDTC700
NEW SLANT BLOCK ASSY LEFT/RIGHT NOT WORKING Upon installation of the new slant block assy, left/right,they are not sliding freely in the slot on the chassis. When screw 628 istightened in place with ref 606, plate assy, loading, the two pieces arepinched together.
SonyDTC700
NO T/U REEL MOVEMENT WHEN PLAY PRESSED - REPL TENSION REG First problem was taken care of by re-timing mech. Secondproblem was fixed by tension regulator assy, which was kinked, causingexcess drag in ff. The back tension did test at 6 gm/cm. in play.
SonyDTC700
LOADING PROBLEM - REPLACED MECH CONTROL IC312 Unit was not loading the tape and tape compartment was openingagain out after it closed. It was acting like the end loading switch was
SonyDTC700
FF AND RW ARE VERY SLOW - REPLACE CAPSTAN MOTOR When putting unit into FWD or RWD, it wouldn't go fast, Itwould be very sluggish.
SonyDTC700
WON'T FWD OR RWD TO END, TOP OF TAPE - REPLACED TAPE GUIDES When trying to FWD or RWD tape would slow down and stop beforeit got to the end/Top of tape.
SonyDTC700
DROP-OUTS ON TAPE MODE ON THIS UNIT - REPLACED RF AMP Tapes recorded on this unit had drop outs. Unit willplayback a known good tape. - SOLUTION: Replaced RF amp. -HQ COMMENTS: This is the first report of a problem with an RF amp sentto the Technical Dept. We will monitor the part usage and look for anyf
SonyDTC700
DROPOUTS ON RECORD/PLAYBACK - INCORRECT TAPE PATH AND DPG When recording, music would drop out, and also playback wouldhave dropouts.
SonyDTC700
UNIT EATS TAPES - LOOSE TAPE GUIDES Customer complained of intermittent Rewind and destruction oftapes. Found reel motor assembly loose. All three screws had backed outseveral turns. In completing the unit I was checking physical conditionof tape path. Found brass posts of entrance and
SonyDTC700
NO AUDIO No audio. Check X-303, X-302 and X-301. Also credit TonyFonseca with this report.
SonyDTC700
TAPE MOVES BUT NO AUDIO Tape moves but no audio. Noticed drum servo speed not locked.(D) reference (pin 60) frequency was low compared to SWP (pin 63) frequen-cy of IC-312. (D) reference is generated by IC-307 by one of the threereference crystals. Found both X-302 and X-303
SonyDTC700
INTERMITTENT REWIND AND FAST FORWARD Customer complained of intermittent Rewind and Fast Forward.I tried another tape and found no problem. I tried two additional tapesand unit worked ok. With this defective tape, the FF is slightly betterthan Rewind. It will also stop intermittently in
SonyDTC700
REMOTE LISTED WRONG IN SERVICE MANUAL The service manual in the Remote Supplied section calls theremote a RM-D55. This number is for a CD player. The DAT-01 course callsthe remote a RM-D55A.
SonyDTC700
CRINKLES TAPE When unit is put into Review mode, the tape skews downwardand is creased. The problem was found by Gary Kilbourne. What happens isthe pad that is attached to the lever assembly comes loose, providing noback tension. We have two new units with this pro


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