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Very quality copy of original service manual, which contains the circuit diagrams, PCB and lists of components, well as recommendation for calibration procedures of device, also everything else, that need for repair, tuning and use this oscilloscope.
All presented copies have high-resolution, so you can view all in detail.
This manual will very useful for simple owners and for repairers.
I recommend these manual, because myself is owner of Philips PM3216 and I need sometimes servicing these oscilloscope (principally calibrating).
Also, these document is an example of excellent design of technical documentation.
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Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
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manual excelente completo , diagramas y esquemas bien presentados y buena calidad de imagen.
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muy buen manual completo de buena calidad de impresion preciso y detallado , muy útil para la reparación.
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The service manual is a good quality scan of the Panasonic NV-850, which is electrically identical to the Philips VR 6920, but mecanically just nearly.
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3. DISASSEMBLY
- How to hold the Mechanism Unit
1. Hold the top and bottom frame. 2. Do not squeeze top frame's front portion too tight, because it is fragile.
A
B
Do not squeeze.
- Removing the Upper and Lower Frames
1. With a disc clamped, remove the four springs (A), the two springs (B), the two springs (C), and the four screws. 2. To remove the upper frame, open it on the fulcrum A. 3. While lifting the carriage mechanism, remove the three dampers. 4. With the frames removed, insert the connectors coming from the main unit and eject the disc. Caution: Before installing the carriage mechanism in the frames, be sure to apply some alcohol to the dampers and set the mechanism to the clamp mode. Carriage Mechanism B Damper Lower Frame B Damper A Damper C
D
A C A
Upper Frame
A
C
A
- Removing the Guide Arm Assy
1. Remove the upper and lower frames and set the mechanism to the clamp mode. 2. Remove the two springs. 3. Remove the two screws and bevel gear bracket. Note that the gears come off. 4. Slide the guide arm assy in the direction marked Spring with the arrow (1) and open it upwards. 5. At the angle of about 45 degrees, slide the guide arm assy in the direction marked with the arrow (3) to remove it.
E
F
Guide Arm Assy
Spring
CX-3098
21 7 8
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