Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
Sony | WMAF59 | SUBSTITUTED MAIN BELT IS LARGER THAN ORIGINAL | The part number is substituted to 3-539-830-00. The substi-tute belt is too big. Used belt part number 3-566-074-00. -HQ COMMENTS: I checked WRPC. They also sub to 3-539-830-00.Tokyo fax ( A911630 ) : The correct belt for this model is the one listed | ||
Sony | D303 | SLED RUNS TO OUTER LIMITS AND STAYS THERE | When Play actuated, sled ran quickly out to edge of disk andstayed there. Motor would not shut off. Noticed that IC-502 - 14 was at2.4V (SLO) while IC502-13 (SL(+)) and IC502-15 (SL(-)) were at 1.7V asshown in manual. Found R-522 feedback resistor rea | ||
Sony | EVT801 | MODIFICATION FOR USE WITH AC LINE LOCK CAMERAS | When the unit is used with an AC Line Lock Camera, randomletters may intermittently appear in the upper part of the picture. Alsoswitching noise may appear in the playback picture. | ||
Sony | XR7180 | NEED PART NUMBER FOR HEAD CABLE | Need part number for head cable with connector. -HQ COMMENTS: The playback head flexible cable is supplied as part ofthe head it is not available separately. Please order part number1-543-506-11 to obtain the head and flex cable. | ||
Sony | KV2900 | UNIT WON'T TURN ON AT 120 VAC | Unit came with no function. If you used ac variac and turnedto 140 VAC, unit will work ok. Checked all voltages at Q-601 and IC-601when AC is at 120 VAC. They are half of value. When its already(140 VAC), unit turns on. Bringing it back to 120 VAC u | ||
Sony | TCH3600 | UNIT CONTAINS FUSE LINKS ON POWER BD NOT REFERENCED IN S/M | Unit has (2) 2.5A fuse links connected in series with thecollector of Q-501 and the bridge rectifier and in series with thecollector of Q-502 and the bridge rectifier. The service manual does notshow any reference to these fuses on page 27. -COMMENTS: | ||
Sony | CFSW400 | MOTOR IN TAPE RECORDER SERVICE BULLETIN 234R RUNS TOO FAST | The replacement motor shown in tape recorder service bulletin#234R runs too fast. Why does this bulletin recommend using motor typeMMA-6B9RWBT, when the original motor type DNE-7700A is still availableunder its original part number (A-3133-221-A)? -HQ | ||
Sony | CDX7520 | WILL NOT LOAD CD | When power was applied to unit, CD mechanism would move toload position and would not return to unloaded position. | ||
Sony | FD2A | INCORRECT IC CASE STYLE, IC201 | The original part listed above is substituted to 8-759-602-XX.This substitute part is a suface mount device. The orginal part is a PCMount Device. The leads are too short to mount on the printed circuitboard. Original part is 8-759-602-99. Replacemen | ||
Sony | WMFX43 | TUNER OPERATION IS TEMPERATURE SENSITIVE | Unit worked perfectly at room temperature but tuner would fadeout below 65 degrees Fahrenheit. Q-53 regulator voltage dropped to 0.8Vwhen unit was cool and up to 2.4 volts when unit was warmed up. Voltagewas unaffected by RV-53 (2.1V adjustment). Foun | ||
Sony | XR4257 | STATIC AND LOW VOLUME ON RIGHT CHANNEL WHEN USING TAPE DECK | Unit has a lot of static and low volume on right channel. Theleft channel is ok. This problem was only on the tape deck tuner wasok on both channels. | ||
Sony | XR4147 | EXCESSIVE WOW/FLUTTER | Unit has excessive Wow/Flutter. The technician replaced thebelt, arm assembly, spindle assembly and motor with no improvement. | ||
Sony | STRAV920 | STATIC ON RIGHT CHANNEL | Unit makes a popping noise when switching functions and a lotof static on right channel. | ||
Sony | STRGX9ES | NO AM OR FM | Unit has no AM or FM and other functions are ok. Aftertroubleshooting the unit, we found R-652 and R-653 on EQ board open. Wealso found C-115 on tuner board was shorted. | ||
Sony | STRAV1070X | ALL LEDS LIGHT UP AT THE SAME TIME | All LEDs light up at the same time and other functions arenormal. After troubleshooting unit, we found there was no data or clockon pin 4-8 of IC-103. Following the line to IC-202 system control therewas no data or clock out on pins 41-40. |