|
|
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
This service manual of the old video cassette recorder VT-LC50EM is very good readable even the tiniest numbers (i.e. IC-pins). The circuits are very clear. Many details of the schematic are very good described but in GERMAN language. Many schematic details - but complete at all. Common background information of several details are enclosed and physical knowledge of the TFT liquid crystal display for example. The manual lacks PCB drawings. If you understand german I would recommend this manual for you.
;
Hi, this is a very clear manual, nice copy, not quite up to the standard of the very best available but better than many others. I think the price was especially fair for a hard to find manual and I would certainly use this manual seller again. Recommended.
 ;
This schema available for me in good condition. I would highly recommend.
;
Thanks for this "hard to find" service manual.
I apreciate the good quality of scanning and the pages scanned in A3 format.
;
Helpd me mont a new carradio when prewius mont was a mess.
2.6 THERMAL HEAD POSITION ADJUSTMENT 2.6.1 Outline The mechanism is designed to be movable by about ±0.4 mm by means of the Head Arm and Heat Sink, and the Thermal Head position can be adjusted by means of the Heat Sink. As a result, an adjustment is required after the Heat Sink has been separated from the Head Arm. The Thermal Head is attached to the mechanism so that only a half of the mechanism can be disassembled unless the Heat Sink is separated from the Head Arm. The remaining half of the mechanism contains the motor and associated parts. Normal printing requires that the Thermal Head press the ink and paper against the optimum position on the Platen Roller. If for example the pressurized point is deviated obliquely, wave or wrinkle patterns will be observed on the print area and the colors become pale. Even when the parallelism of the Thermal Head is maintained, similar symptoms to the above may be observed when it is deviated upward or downward. The phenomenon described above occurs when the Thermal Head is not pressurized against the designated area on the Platen Roller with the designed pressure values being applied. Since the Platen Roller is a simply rotating part, the part to be re-positioned in this case is that of the Thermal Head alone. Assuming that the optimum position is A, Standard paper: A ± 0.25 mm (approx.) The �±� indicates tolerance and the Thermal Head is satisfactory if it is within that tolerance range. In the actual mechanism, the Thermal Head can be moved by about ± 0.4 mm.
0.25 mm Peper exit direction Head Arm Deviation tolerance 0.25 mm
Heat Sink Thermal Head
0.25 mm
1 Center
Assumed to be optimum position A.
0.25 mm
Heat Sink Thermal Head
0.25 mm
2 Toward the paper exit direction
Heat Sink Thermal Head
0.25 mm
2.6.2 Adjustment Procedure Assuming that 1 in Fig. 2-6-1 indicates optimum position A, normal printing may seem to be possible even when the position is deviated up or down like 2 or 3 or obliquely like 4 or 5. However, these figures show only the extreme cases. In actual operation, if the position is deviated as shown in 2, 3, 4 or 5, the deviation may exceed the tolerance. In addition, if it is assumed that 2 indicates optimum position A, cases 3, 4 and 5 exceed the acceptable tolerance and only 1 and 2 fall within it.
3 Apart from the paper exit direction
0.25 mm
Heat Sink Thermal Head
0.25 mm
4 Toward the right oblique direction
0.25 mm
Heat Sink Thermal Head
0.25 mm
5 Toward the left oblique direction
Fig. 2-6-1
2-8
|
|
|
> |
|
