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Modelo - Chassis 20
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | FD20A | NEED P/N FOR REMOVING PIN FACE SCREWS | Servicer has requested P/N for tool to remove pin face screws(P/N 3-314-055-00). Tool kit catalogue recommends three types7-700-731-11, 7-700-731-21, 3-832-391-00. Will any of these tools do thejob or are we coming out a new tool? -HQ COMMENTS: A pair | ||
| Sony | CRF320 | BAD CONTACT ON SS-6 SWITCH | The unit came in with very poor sensitivity in AM, SW and LW.Checked and found there was almost no local oscillator signal at thecenter tap of IFT201 in the second mixer circuit. | ||
| Sony | ICF2001 | MALFUNCTIONING AGC CIRCUIT | In FM mode, if there is a large bass sound, it is verydistorted. But if the RF carrier level is low, the bass sound is notdistorted. | ||
| Sony | CDP200 | DISTORTION AT OUTPUT | Went through alignment procedure, but found gross distortionin audio output. Noticed that waveform at Pin 1 IC506 and IC507 was blankfor a portion of the charging time. Could not find any voltages or wave-forms around IC505 wrong. | ||
| Sony | CDP200 | JAMMED GEARS ON CHUCKING MOTOR | Thrust play on chucking motor was excessive causing gears tojam. The limit switch (S805) did not close until cam chucking plate 60was at the mechanical end of its travel. This caused the motor tocontinue to run for a short time after mechanical movemen | ||
| Sony | CDP200 | MISADJUSTED THRUST SCREW | Intermittently the unit would not eject the disc. We foundexcessive thrust play in the shaft of the chucking motor to be theproblem. This permitted the worm to bind with the chucking gear.Adjustment of the thrust screw resolved the problem. -HQ COMMEN | ||
| Sony | RS20 | MALFUNCTIONING ROTATING DET | The unit does not rewind all the way to the beginning of thetape, when trying to record OGM. Then the tape stops and the ready LED(D601) blinks and a beep sound is emitted. | ||
| Sony | CDP200 | POOR CONTACT BETWEEN CLUTCH AND THE DISC | Unit skips. Music comes and goes. Noted that tracking errorand sled waveforms would go crazy when problem occurred. Tracking errorwould alternate between traverse signal and servo loop signal. We foundthat the disc would wobble just before the proble | ||
| Sony | STRVX200 | LEAKY DIODE D302 | This unit would intermittently lose station (preset) memory. | ||
| Sony | CDP200 | RF PLL OUT OF ADJUSTMENT | The unit skipped in play mode. | ||
| Sony | CDP200 | FOCUS OFFSET AND RF PLL OUT OF ADJUSTMENT | Although the objective lens searches for the focus point andthere is laser light coming out, the disc motor does not turn. | ||
| Sony | CF420 | MECHANISM SHUTS OFF | The mechanism shuts off in any mode before tape ends. Forsome reason, the shut-off safety plate did not engage the brake lever.Put it back on the brake lever. | ||
| Sony | M205A | DEFECTIVE PANASONIC CASSETTES | I have had several instances of erratic or non-operation ofM205A at the Pittsburgh FSC counter. In all of these, the customer wasusing Panasonic MC60 cassettes. Replacement with Sony MC60 cassettescured all problems to satisfaction of customer. | ||
| Sony | ICF2001 | DEFECTIVE IC201 | The AM was very weak and only strong stations could BLEEDthrough. We found the problem to be caused by incorrect bandswitching.We found IC201 to be putting out the wrong commands. | ||
| Sony | ICF2001 | DEFECTIVE FILTERS Q32/Q51 | The FM muted above 89.20MC. AM worked fine we found the PWMnot being properly filtered out of PLL-1. |