Dvw-a500p Error 20
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slack of the tape is detected during threading or unthreading, and then tape protection dvw a500 is done. Detected when the ratio of the FG frequency at a supply reel, take-up reel
Dvw A500 Manual
and threading motor is less than the specified value. 02 REEL TROUBLE-2 The slack or breaking of the tape is detected in search, fast forward,
Sony Dvw A500
or rewind mode, and then tape protection is done. Detected when the ratio of the FG frequency at a supply reel and take-up reel is less than the specified value. 03 REEL TROUBLE-3 The slack or breaking of the tape is
Dvw-a500 Maintenance Manual
detected in playback mode, or either of the lock of the supply or take-up reel is detected, and then tape protection is done. Detected when the FG frequency at a supply or take-up reel is zero (0), or when the tension detected from a tension sensor is less than 15g 04 REEL TROUBLE-4 It is detected that the tape does not run at the speed of designation in fast forward or rewind mode, and then tape protection is done. Depends on the sony dvw-a500 manual comparison between the tape speed using the FG frequency at supply and take-up reels and the designated speed. 05 REEL TROUBLE-5 It is detected that the supply or take-up reel cannot stop with a cassette is not inserted, or detected that over current has been flowing to supply and take-up reels. Detected using the FG frequency or current at supply and/or take-up reels. 06 TAPE TENSION ERROR When excessive tension is detected, tape protection is done. Detected when the tension detected from a tension sensor is more than 55g. 07 CAPSTAN TROUBLE It is detected that the tape does not run at the speed of designation in play or search modem and tape protection is done. Detected at the tape speed detected from the FG frequency at a capstan motor. 08 DRUM TROUBLE It is detected that drum motor rotation I not normal, and then tape protection is done. Detected when the drum speed obtained from the speed FG of the drum motor is less than the specified value. 09 TH/UNTH MOTOR TIME OUT It is detected that threading or unthreading is not completed, and then tape protection is done. Detected when threading or unthreading is not completed within ten second after it is started. 0A THREADING TROUBLE It is detected that threading cannot be done, and then tape protection is done. Detected when the tape top sensor is acted during threading after the short FF mode is automatically entered three times. 10 HUMID Cond
pinch roller and capstan with the same materials. If the pinch roller shows signs of cracking or developing a ring around it after cleaning, dvw-500 change it. Oh, and remember to replace the little paper-disk filter on sony dvw 500 the top of the head drum assembly. ---------- Several common points of failure have shown up so far. The first dvw 500p causes high errors and leads the hapless engineer to assume that the heads are worn out. Before changing the heads, give the chips along the top edge of the EQ45 board http://www.matrixav.com/reference/dvw_error_codes.htm a dose of freezer spray. If the errors go away, you've got galloping chip-rot. If you have more than one machine, you can swap the EQ45 boards and see if the high-errors problem stays with the board or the machine. It's a bit fiddly because of all the cables but it's better than doing an unnecessary head change! The early chips (IC401,501,601,701) have plastic http://www.davepick.co.uk/info3.htm tops and no heat-transferring material between the chip and its top. Sony did stick a nice heatsink on the top but it only cools the plastic! The chips tend to run hot, especially if you block the vent holes in the top cover, and they die. The new chips have nice golden metal tops and run cooler but they cost £100 each and are a pig to change. Another way to solve the problem is to fit the new version of equaliser board, it costs close-on £1000 and the machine needs a software upgrade. They do run much cooler though, so should be more reliable. ---------- The second common fault I call "mad panel syndrome". Various erroneous indications are given by affected front panels. The record light comes on and scares the s**t out of you, two lights illuminate when only one should, timecode display is corrupted etc. etc. Although this is usually just an indication problem, serious cases can also affect the operation of the machine. The faults are caused by some sort of corrosive material emenating from the rubber holders supporting the LEDs behind the panel. This ro
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