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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| 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. | ||
| Sony | CFS99 | SUBSTITUTE PART WAS SMALLER | Substitute part was smaller. -HQ COMMENTS: Late production CFS-99s used a larger gear (AN) identifiedby P/N 3-579-641-00. Please make a note in your S/M. | ||
| Sony | CFS45 | REPLACEMENT PART IS SMALLER | Replaced tape transport with X-3570-050-1. Found motor switchnot being activated due to arm on brake lever being too short to reachswitch. Transport P/N X-3570-050-4 has correct length arm. | ||
| Sony | CDP701ES | DEAD UNIT | The dead unit had IC108, IC109, IC110, IC801 - shorted.IC108 was physically melted, with a hole in the chip. We can duplicatethe problem by shooting C218, C214, C138 to ground for a fraction ofa second. | ||
| Sony | CDP101 | FUSIBLE RESISTORS R390 AND R391 | Door opens slow. R390 and R391 was charred and IC304 wasreplaced as precaution. | ||
| Sony | CDP101 | DEFECTIVE CRYSTAL | 1) Disc motor would run at power on. 2) No loading orchucking operation. 3) Sometimes pause and play, LEDs would light.4) Sometimes drawer would open partly. | ||
| Sony | XR85 | LOADING DRIVE BELT STRETCHES | Loading drive belt stretches and belt will slip. When thebelt slips the cassette will not load. | ||
| Sony | XR85 | INCORRECT PART NUMBER IN MANUAL | A tech. ordered a volume control (R/N 502 in the S/M) by theparts number 1-228-735-00 but he received the part 503, instead. | ||
| Sony | WM10 | COLD SOLDER JOINT ON FLEXIBLE BOARD | Unit stopped rewinding or fast forwarding several secondafter pressing REW or FF button. Found cold solder on the flexible boardbetween S901 and R634 as indicated in the diagram. | ||
| Sony | TCK88B | UNIT OUT OF ADJUSTMENT | Dealer complained of gross wow and flutter. Verified problem,measured 0.6% JIS weighted. | ||
| Sony | TCK88B | LOOSE WIRE BETWEEN SERVO BOARD AND SYSCON BOARD | Counter was intermittently not advancing. Determined thatIC602 derives count from supply reel revolutions using output of Q536 andQ535 on servo board. | ||
| Sony | TCFX77 | MISSING PART # IN MANUAL | There is no P/N for the capacitor C134, 234 (56pF/500V),which are connected to the R/P head, in the service manual. | ||
| Sony | TCFX44 | DEFECTIVE RELAY | Erratic system control operation. When record button isdepressed, unit will intermittently enter rewind mode after 2-3 sec(record deactivates). Results from high resistance of relay contacts. | ||
| Sony | SPP11 | SERVICE MANUL INSTRUCTIONS | P31. Lacking a linear detector, I adjust RV2 to energizebase relay. | ||
| Sony | SPP11 | SERVICE MANUAL INSTRUCTIONS | P10 of service manual instructs tech. to turn RV6 CCW forfreq. adjustment. It is my belief that it should read RV5, instead. |