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Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | CCDV8AFU | VERTICAL BARS ON PLAYBACK | Vertical bars on playback caused by creases on the tape.Customer thinks the unit is damaging his tapes. Verified creases on allsize tapes. | ||
| Sony | WMF10II | WHEEL BLOCK ASSY, MOTOR (SUBSTITUTION) | This part subs to X-3315-357-1 (WM-F10) but the shaft in thewheel block is too long for the WM-F10II motor. -HQ COMMENTS: Refer to T/N Letter A0053. Use P/N A-3313-205-A for themotor wheel block assembly. However, the new motor wheel is notcompatible | ||
| Sony | STRAV760 | NO SIRCS OUT SIGNAL | No output at SIRCS out connector. | ||
| Sony | KV2670R | PURITY OFF, REPAIRED DEGAUSING COIL | Minor purity problem in the upper left corner. Hand degauss-ing did not clear problem and could not be adjusted out. The purity wasso far off that the red gun controlled the green phosphor. | ||
| Sony | KPR4110 | Q-22 CIRCUIT IN SCHEMATIC IS WRONG, PLEASE CORRECT YOUR SM | Page 77 of schematic shows collector of Q22 going through R40to B+. It should go through R40 to base of Q23. -HQ COMMENTS: Please correct your Service Manual using thisinformation. | ||
| Sony | WMF75 | FUNCTION SWITCH | After short period of usage, function switch becomes loose. | ||
| Sony | SLHFR30 | PLAYBACK PICTURE DISTORTED | When scoping RF envelope, one head missing. Servicer hasalready changed the heads. Traced RF (A and B) to Pins 17 and 18. Bothheads were present. Check PG pulse at Pin 9, it was okay. No output atPin 14 for one head. | ||
| Sony | KV1954R | PIX IN ON SIDES AND HORIZONTAL, REMOVED TAPE | Pix in on sides and horizontal. Double sided sticky tapeholding C509 on the bottom of the board is affixed to the bottom of IC501across pins 19, 20, 21, 22, 23, 24. | ||
| Sony | EVS700U | NO OPERATION | Unit will go into eject mode but accept no other functions.If in eject mode already with the cassette door open, the compartment willnot close unless power is removed. System control IC101 revealed very lowDC, about 1.4VDC, at Pins 12 and 15. No regula | ||
| Sony | BMC220 | VERY DISTORTED PICTURE, NO COLOR | Recorded picture was distorted with no color. Tried perform-ing horiz. balance but waveform on TP702 was low in amplitude. Voltage onPin 12 of IC701 was low (82V). Input to switch (Pin 13) was also wrong.Base of Q704 was -1.9V. | ||
| Sony | TCM5000EV | PAUSE MODE NOT WORKING CORRECTLY | On this unit and on a previous repair, I found that thespring (Ref. #357) was broken. When the pause button is depressed, themotor will stop after a short time as S902 is not being turned on. | ||
| Sony | CDP70 | SHORTED LASER DIODE | The laser would not come on. We found the laser diode to beshorted. Also this unit was similar to the circuit found in SupplementI (Nov. 1985) with the exception of RV201 and R212 being omitted. Wewill install these parts and adjust the laser level. | ||
| Sony | SLHF500 | TUNER DOES NOT WORK | The tuner would not work nor would the channels display.We found IC301/Pin 16 on the TM-52 board to be approx. 1.8 volts. Thiswas caused by a leaky Q305. | ||
| Sony | KV2670R | INTERMITTENT SYNC, REPLACE L-506 | Intermittent no sync and no color. | ||
| Sony | SL2710 | WRONG REPLACEMENT PART (PINCH SOLENOID) | The replacement part 1-454-365-51 has the wrong plug assemblyon the end of the wiring harness. This replacement part has the largestyle plug and the unit uses the small style. |