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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.
3 CCD (IC802) A charge-coupled device in which charges are introduced when light from a scene is focused on the surface of the device. The image points are accessed sequentially to produce a television-type output signal.
532(H) 508(H)
Effective picture element: 249,936 = 508 (H) x 492 (V) PHIS1~PHIS4: Clock pulse for the storage.
PHI4 3 PHI3 4 5 PHI2 PHI1 6
VGG Amp. Output VOG
PHIR 7 VDD 8 Vout 9 12 13
Sample Hold,
Image pickup
500(V)
PHI1~PHI4: Clock pulse for the image pickup. PHIH1~PHIH2: Clock pulse for the horizontal shift register. PHIR: CCD analog signal output.
PHIH2
Storage
PHIS4 PHIS1 PHIS2 PHIS3
19 18 17 16
PHIH1
15
492(V)
Horizontal shift register (CCD)
14
4 Camera Signal Processor (IC801)
From CCD
AGC
8bit A/D Converter
D0~D7
D0~D7: Digital signal of the luminance and the color difference B-Y and R-Y signal. CCD IN: CCD analog signal input. VI1~VI4/VS1~VS4: Clock pulse for the CCD control signal.
to CCD
Timing Generator
From/to CPU
Sample Hold Selects a desired signal from the CCD. Timing Genarator Generates the clock pulse for the CCD. 8-bit AD converter Analog signal from the CCD is converted into 8-bit digital signal of the luminance and the color difference B-Y and R-Y signal. .
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