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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.
(7) Check first that indication �L� of �AC1L� on the LCD (Tuner [1]) has disappeared, and then press the S708 switch on the RF-92 board (WRU-806A, Tuner [1]). n If the �L� indication does not disappear from the LCD (on A area: refer to the previous procedure (5) (when the RF input level is lower than the reference level) or �H� is displayed (when the RF input level is higher than the reference level), perform the following adjustment. 1 Check the RF output level and frequency of the signal generator (perform re-setting if necessary), and repeat from procedure (1). 2 If the above conditions (the �L� indication does not disappear, or �H� is displayed) remain even after re-adjustment, it is necessary to check the WRU-806A Tuner Unit. (8) Indication on the LCD (Tuner [1]) appears as follows: LCD:
(13)Check first that indication �L� of �AC3L� on the LCD (Tuner [1]) has disappeared, and then press the S708 switch on the RF-92 board (WRU-806A, Tuner [1]). (14)Connect the signal generator to the ANTENNA B IN connector with DC cut fixture. (15)Indication on LCD (Tuner [1]) appears as follows: LCD:
B C1 L
(B C1 L)
A C2 L
(A C2 L)
(16)Set the FREQUENCY(carrier frequency) of the signal generator as follows; FREQUENCY(carrier frequency): U64 model; 772.000 MHz U66 model; 784.000 MHz U68 model; 796.000 MHz (17)Check first that indication �L� of �BC1L� on the LCD has disappeared, and then press the S708 switch on the RF-92 board (WRU-806A, Tuner [1]). (18)Indication on the LCD (Tuner [1]) appears as follows: LCD:
(9) Set the FREQUENCY (carrier frequency) of the signal generator as follow. FREQUENCY(carrier frequency): U64 model; 776.000 MHz U66 model; 788.000 MHz U68 model; 800.000 MHz (10)Check first that indication �L� of �AC2L� on the LCD (Tuner [1]) has disappeared, and then press the S708 switch on the RF-92 board (WRU-806A, Tuner [1]). (11)Indication on the LCD (Tuner [1]) appears as follows: LCD:
B C2 L
(B C2 L)
A C3 L
(A C3 L)
(19)Set the FREQUENCY(carrier frequency) of the signal generator as follows; FREQUENCY(carrier frequency): U64 model; 776.000 MHz U66 model; 788.000 MHz U68 model; 800.000 MHz (20)Check first that indication �L� of �BC2L� on the LCD (Tuner [1]) has disappeared, and then press the S708 switch on the RF-92 board (WRU-806A, Tuner [1]). (21)Indication on the LCD (Tuner [1]) appears as follows: LCD:
(12)Set the FREQUENCY (carrier frequency) of the signal generator as follow. FREQUENCY(carrier frequency): U64 model; 780.000 MHz U66 model; 792.000 MHz U68 model; 804.000 MHz
B C3 L
(B C3 L)
3-4
MB-806A (U) WRU-806A (U)
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