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Make	Model	Symptom	Problem
SONY	STR4800SD	Missing part #	A servicer asked the part # for the fm front end (faf-033w).it is not listed in the s/m.
SONY	NR500	Error in manual	Incorrect cal. indicator adjustment procedure. see page 10,section 3 adjustments is also error in schematic (pages 15/16/17) - d314.left and right audio channels are shorted together at c133 and c233.
SONY	MTL10	Cam gear out of position	Several units did not work out of the box. the problem isthat the main cam gear is not properly positioned. repositioning the camresolves the problem. -hq comments: the main cam gear being out of position may have beencaused by some irregular cassette
SONY	CFSF11	Part number for split gear	Found split gear on bracket assy head (#424) on two units.i would like separate part # for gear, or is it included in bracket assypart # x-3313-714-0? -hq comments: the gear is available separately. the part # is3-313-754-01. please refer to the t/n
SONY	WM7	Head bracket out of position	1) no audio, noise only. 2) low volume, audio distorted.3) low audio, low volume, high pitch noise.
SONY	TCU60	Capstan motor replacement	The replacement capstan motor assembly is different from theoriginal. in addition to the expected rv1001 speed control potentiometer,there are two additional pots rv1002 and rv1003. -hq comments: the gain adj. of the motor assy (x-3564-030-0) has beenc
SONY	TCFX77	Manual corrections	The hardwire diagrams for both the tc-fx77 and tc-fx600 haveerrors. the schematic diagrams appear correct. q504, q506 are shown asnpn transistors incorrectly, they are pnp.
SONY	PSLX510	Flickering led	Locked led will flicker after 15 minutes to 2 hours ofplaying. heat or cold seems to have no effect. ic101, ic102, ic103 havebeen replaced. unit is still intermittent. -hq comments: use 100Ω resistor in place of r284, or put 220Ω inparallel to
SONY	PSLX500	Arm motor produces noise on output	Arm motor moves eratically producing a thumping noise in thespeakers, especially audible on low recording or classical records.tracking error adjustment does not change anything. -hq comments: verified the problem thumping noise, frequency 10-15hz,becam
SONY	HMK3000	P/n not in manual	Torque converter for rew and ff motor is not shown on partsmanual. please supply part # if available. -hq comments: please replace the motor as an assembly x-3564-015-0since the converter (gear) is press-fit.
SONY	CFS300	Replacement parts have changed	A technician ordered the side plate for the handle with thep/n 3-313-604-00. the new part has different shape and it cannot fitin the handle. -hq comments: production changes have been done on both side plateand handle bar. please order three parts:
SONY	CFM15	Replacement parts not correct	Customer ordered replacement parts from kansas city, but partsreceived were not identical to original parts. -hq comments: there has been a production change of mechanical trans-port. we will issue a t/n as soon as we get details from tokyo.meanwhile p
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	CDP101	Noise in left channel	Whistle on left channel. audio thru headphone output but not thru line out.
SONY	WMF5	Missing part number	Unavailable p/n or description in manual for walkman holster.
SONY	WM10	Different size washers	When replacing part #358 and #363 you must leave out washer#346 or the unit will not rewind because gears will not mesh.
SONY	WM10	Replacement parts have been changed	In the course of repair, it was necessary to replace chassisassy, motor p/n x-3315-312-0 schematic ref. #363. this part is replacedby chassis ass'y motor p/n a-3133-195-a. 1) no bearing 3-315-387-01 issupplied making it necessary to remove old bearing
SONY	TCFX505R	Worn thrust bearing	The unit would intermittently produce large amount of wow &flutter in the reverse direction. we traced the problem to the capstanthrust bearing. the plastic had lost its spring and was permittingexcessive thrust play.
SONY	TAV7	P/n error in manual	P/n for ic401 is incorrect in manual. ic401 = upd553c244p/n per manual 8-759-101-01 = cx10032correct p/n 8-759-101-10 = upd553c244 -hq comments: we will issue a t/n and s/b.
SONY	STRVX550	Processor lost memory	At approx. 30 day intervals, this ic would lock-up in itsprogram and require a manual resetting. this occurred even after itsreset and hold periods had been changed by 0.22mfd capacitors.