The Phillips circular stirs up bald VAM1201/ 2 emergency repairs
The Phillips circular stirs up baldly appears coldly machine does not read the small dish, the heat engine reads the small dish; In the objective lens has the proliferation shape dark red facula but the small dish piece not to rotate; Reads the small dish impeded to appear the stop or the mosaic; Cannot read the CD small dish piece and so on a series of breakdowns is definitely may repair.
[ Breakdown one ] is cold machine does not read the small dish, the heat engine reads the small dish
[ Reason ] 1. circular laser total information mirror surface, the reflector mirror surface and the objective lens mirror surface is atomized; 2. Stirs up baldly may move a center to move the arm of force [ "elastomer" hinge ] is the two-dimensional molded plastic, weary but distorts as a result of the long-term frequent movement, is cold machine surpasses the focusing/ Follows the mark servo-control scope differently, the heat engine changes the result servo also to be able to carry on the error control reluctantly.
[ Method one ] 1. may use electricity regarding the reason catches a chill air-dries stirs up the bald internal or the superficial mist under, and may in machine in or is cunning lays aside the drying agent, by prevented the day while cold mist attacks once more stirs up the bald various mirror surfaces but to appear coldly machine does not read the small dish the breakdown;
[ Method two ] 2. removes regarding the reason may move on [ objective lens support rear part ] two trimmings bolts solid sealing compound, then horizontally views the objective lens surface with the eye, adjusts two trimmings bolts, looks over the objective lens surface and the transverse view objective lens surface should with the black base longitudinal surface and the crosswise surface parallel, achieved "mirror vertical even base vertical, mirror horizontal even base horizontal" up to, like the chart 1. （ShowsClick to enlarge）:
[ Method three ] best replaces "GERIDE" CN1201/ 12 stirs up baldly, immediately thorough settlement this breakdown.
[ Breakdown two ] in the objective lens has the proliferation shape dark red facula but the small dish piece not to rotate
[ Reason ] 1. power is weak or the fluorescent tube gets older; 2. The circular laser total information mirror surface, the reflector mirror surface or the objective lens mirror surface internal organs, are diaphanous are not good.
[ Method one ] stirs up the bald small printing plate polishing power potentiometer positioning regarding the reason 1. observation, may or the position potentiometer adjustment for the position [ namely for the potentiometer 3/ 4 ], if small dish piece rotation, then the explanation light manages well, the clean path of rays [ sees also each lens clean method ], then repairs should stir up baldly;
[ Method two ] 2. will stir up the bald breakdown regarding the reason for a fluorescent tube belt row of line and the big sheet iron, the base riggers band reflector, may move the belt objective lens three bulks. Glues on 75% ethyl alcohol with the cotton and kapok bamboo slip, and flicks off the lint ball in ethyl alcohol or attracts with the paper, From top to bottom presses the unidirection many times gently to clean repeatedly, cleanly stirs up the bald various mirrors one by one the surface, clearly causes it to be clean, does not have the watermark. Pays attention surely cannot about back and forth clean [ its consequence to be able reflector mirror surface, objective lens mirror surface to scratch flower ]; Cannot use the rectified alcohol, the acetone, otherwise can damage the mirror surface coating. After cleanly had ended, may move to install on the black base, again the circular laser according to the original design insertion screw in, then removes the breakdown.
[ Breakdown three ] reads the small dish impeded to appear the stop or the mosaic
[ Reason ] 1. circular laser total information mirror surface is scratched the flowered, the reflector mirror surface or the objective lens mirror surface is scratched the flower, best reads the small dish path of rays to destroy; 2. May move to move the arm of force distortion.
[ Method one ] 1. may use [ breakdown regarding the reason two ] the center [ method two ] the clean reflector mirror surface or the objective lens mirror surface; Is scratched regarding the circular laser total information mirror surface the flowered the processing method, then is uses the finger back and forth to trace first scratches the total information mirror surface, carries on using the finger on fingerprint to the total information mirror surface polishes processing to be brightest [Rocks under the glare moves assumes the pure blue color ] but as for not to damage the total information mirror surface; Again uses to stick has 75% ethyl alcohol cotton and kapok to sign [the ball/ Attracts the unnecessary ethyl alcohol ] to eliminate polishes in the total information mirror surface the dirty dirt. After cleanly had ended, may move an attire on the black base, again the circular laser according to the original design insertion screw in, then removes the breakdown.
[ Method two ] 2. may use [ breakdown regarding the reason one ] the center [ method two ] to adjust may move on two trimmings bolt to fix this breakdown.
[ Breakdown four ] does not read the CD small dish piece
[ Reason ] 1. light power is big; 2. EF phase deviation.
[ Method one ] 1. adjusts the potentiometer regarding the reason to reduce the light power, enables it to read the CD small dish piece up to.
[ Method two ] 2. takes down regarding the reason stirs up baldly, removes the fluorescent tube sealing compound, clean path of rays, circular laser total information mirror surface, reflector mirror surface and objective lens mirror surface; Again the circular laser insertion screw in, coarse adjustment it installs the position, causes it to horizontally view above the circular laser engraving plate with the eye to be supposed with the black base crosswise surface parallel, like the chart 2. shows. Opening machine tries to read the CD small dish piece, if does not read the small dish, may slightly along [ left or is right ] the unidirection to sway from side to side a circular laser engraving plate, to reading the CD small dish up to, then again reading two gathers a DVCD small dish piece, after the success uses 502 raped drying rubber seal（ShowsClick to enlarge）.
When uses the CD small dish piece tries to read, the adjustment circular laser engraving plate position [ namely adjusts the EF phase ], in five years service adjustment discovered stirs up the bald migration to have the regularity extremely. When the proportional type control deviates left [ or right ] the surface is big, then laser disposable moves to the edge but the engine off rule; If the
proportional type control deviates left [ or is right ] the surface to compare the hour in, then stirs up baldly according to approaches the reason [ main axle ] When leaves when enters rule migration; Its adjustment circular laser engraving plate position with stirs up the bald motion correspondence rule like table 1. to arrange in order:
Table 1
Item |
To left deviation |
Best position |
To right deviation |
Biggest |
Big |
Small |
EF phase |
Small |
Big |
Biggest |
Bald motion rule |
Inside along |
↓ |
↓ |
↓↑ |
Reads the CD small dish to enter the broadcast condition
|
↓↑ |
↓ |
↓ |
Center |
↓ |
|
|
↓ |
Outside along |
↓ |
|
|
↓ |
When the adjustment circular laser engraving plate position [ namely adjusts the EF phase ], watches stirs up bald motion the rule, then can very quickly find the EF phase best spot.
[ Breakdown five ] does not read the SVCD small dish piece
[ Reason ] 1. light power is small; 2. EF phase deviation.
[ Method one ] 1. adjusts the potentiometer regarding the reason to increase the light power, enables it to read SVCD, CD, the DVCD small dish piece up to.
[ Method two ] 2. may use [ breakdown regarding the reason four ] the center [ method two ] to adjust the circular laser engraving plate position [ namely to adjust the EF phase ] to fix this breakdown.
Attach:
Opens, trades the circular laser and the objective lens and the determination circular total information laser method
First, opens, trades the circular laser the method
With attracts the tin utensils to attract various feet soldering tin, again uses the bit to cut to the circular laser and the small engraving plate, takes down already the circular laser which damages and eliminates in the screw place the residual rubber; Correctly aims at the small foot position the good circular laser foot position to weld, again the circular laser insertion screw in, 2. shows according to the above chart coarse adjustment it to install the position, causes it to horizontally view above the circular laser engraving plate with the eye to be supposed with the black base crosswise surface parallel, again carries on the EF phasing.
Second, opens, trades the objective lens the method
Strips with the bit the objective lens from the objective lens cavity, and in the elimination objective lens cavity residual rubber, scratches again the good objective lens two surfaces cleanly, puts in the objective lens cavity, holds down objective lens at the same time with the cotton and kapok bamboo slip, will use the hot melt rubber pellet which the sharp iron will glue on to seal the objective lens double ear edge [ attention not to have to scald nearby objective lens ], finally will clean time of objective lens again then.
Third, determination circular total information laser method Phillips Corporation uses the Sharp Corporation early time production LTOH30A/ P/ J [ entire seal/ Half seal ] three kind of circulars total informations laser produces Phillips series VCD to be cunning, disposes in domestically produced each VCD Player, use already some years, its circular total information laser was not the defeat, was the serious aging, or –odd under very limited life. Its determination method has following two kinds.
Watches the dark thioindigo red shape simple method
1. uses YX - the 960TR volt to watch the objective lens facula shape criterion
Will use the circular total information laser to constitute stirs up from is baldly cunning takes down in, volt [ its resistance × 1 will keep off with YX - the 960TR sets has two 1.5V the battery ] the resistance ×1 to keep off, will meet the red table pen the terminal assembly line (6)th foot, the black table pen will meet the terminal assembly line (5)th foot, then the view facula shape will carry on the determination from the objective lens:
(1) does not have the dark red facula is "dies the tube";
(2) central appears a dark red facula in the objective lens for seriously to get older the tube, like the chart 1. shows. Its reason is comes to pay tribute the light which the laser launches too to be weak, the total information lens cannot diffract the clearly discernible spectral line.
Chart 1. seriously gets older the tube dark red facula
(3) objective lens watch like the chart 2. to show, have proliferate the clearly discernible dazzling dark red facula to the edge for the good tube which may repair.
Chart 2. dazzling dark red facula
2. sur- 3V battery watches the objective lens facula shape criterion In does not have YX - in the 960TR volt situation, may use two 1.5V battery, serially connects 2.2 ohm resistances, 3. shows according to the chart to the circular total information laser constitutes stirs up bald Canada, watches the objective lens facula shape to carry on the determination:
(1) dark red facula is "dies the tube";
(2) central appears a dark red facula in the objective lens for seriously to get older the tube, like the chart 1. shows.
(3) clear has obviously to the edge proliferation dazzling dark red facula for the good tube which may repair, like the chart 2. shows:
Chart 3. sur- 3 V battery watches circuit diagram of the objective lens facula shape
The electric current measures the mensuration
With a 100mA ampere meter and 2.2 ohm resistances, meet with 2 1.5V battery constitute a sur- power source. 4. shows according to the chart to the graph total information laser constitutes stirs up bald Canada, watches in the ampere meter the electric current to carry on the determination:
1. ampere meter does not have the electric current to instruct or to surpass 60m A, in the objective lens also does not have the dark red facula is "dies the tube";
2. ampere meter is 55 m A, in the objective lens appears a dark red facula for seriously to get older the tube;
3. ampere meter is 55 m A~60 m A, in the objective lens also has to the edge proliferates the clearly discernible dazzling dark red facula for the complete violent fluorescent tube, this stirs up the fluorescent tube to be possible to repair.
The chart 4. electric current measures the mensuration
In summary Phillips circular pipe VAM 1,201/ 2 stirs up the bald repair method for the emergency processing method, cannot achieve stirs up baldly best reads the small dish condition, also is unable to guarantee stirs up the bald service life, repairs on some kind of See the dish machine, only can read the small dish on some kind of See the dish machine, but cannot stir up on bald See the dish machine in other same model to read the small dish, incompatible other See the dish machine read the small dish, must cause See the dish machine to read the small dish to be good, compatibly reads the small dish multi- suggestions to replace "GERIDE" CN - 1,202/ 12 stirs up baldly. |
