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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.
ELECTRICAL ADJUSTMENTS
2-13: TINT 1. Receive the NTSC color bar pattern. (Audio Video Input) 2. Using the remote control, set the brightness and contrast to normal position. 3. Connect the oscilloscope to TP024. 4. Activate the adjustment mode display of Fig. 1-1 and press the channel button (20) on the remote control to select "TINT". 5. Press the VOL. +/- button on the remote control until the section "A" becomes a straight line. (Refer to Fig. 2-2) 2-15: Confirmation of Fixed Value (Step No.) Please check if the fixed values of the each adjustment items are set correctly referring below. NO. FUNCTION 02 04 06 07 09 10 18 19 20 21 23 24 26 27 30 Fig. 2-2 2-14: CONTRAST CENT 1. Activate the adjustment mode display of Fig. 1-1 and press the channel button (22) on the remote control to select "CONTRAST CENT". 2. Press the VOL. +/- button on the remote control until 3. 4. 5. the contrast step No. becomes "35". Receive a broadcast and check if the picture is normal. Set to the AV mode. Activate the adjustment mode display of Fig. 1-1 and press the channel button (22) on the remote control to select "CONTRAST CENT". Press the VOL. +/- button on the remote control until the contrast step No. becomes "44". Receive a broadcast and check if the picture is normal. 31 32 33 34 35 36 37 38 AGC GAIN R CUTOFF G CUTOFF B DRIVE V POSI (50) V POSI (60) BRIGHT MAX BRIGHT MIN TINT SHARP CONTRAST MAX CONTRAST MIN COLOR MAX COLOR MIN M B CUT OFF CVBS OUT APR THRESHOLD BELL FILTER BANDPASS H POSI OSD V POSI OSD H POSI TEXT V POSI TEXT RF 00 00 00 45 08 00 40 09 32 04 50 10 50 10 127 31 00 05 00 118 50 122 58 AV ------------40 09 ADJ. 04 50 10 50 10 -------------------
"A"
* To check for the fixed values of the RF (60Hz), indicate the adjustment mode screen while input the 60Hz video signal.
6. 7.
D-3
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