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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.
ULTRAMIX SELF TEST PROCEDURE
Setup: Connect the MIDI OUT jack of the DUT to the MIDI IN jack of the DUT. Use Control Interface Port test adapter to connect the TX to the RX signal at the CIP1.
Action: Apply power to DUT. 2
RAM Test: (Tests SRAM and EEPROM) Response: PASS: The three LEDs on the front panel will light up sequentially (MIDI first, then Bypass, then Local). All LEDs will then go off and the Bypass LED will come back on, indicating that the DUT is in its default power-on mode and is ready for normal operation. FAIL: The bottom two LEDs (Bypass and Local Mode) will flash quickly and the DUT will hold in this failure mode.
IO Port Test: (Tests MIDI IO and Control Interface Port IO) Action: Response: Simultaneously apply power to DUT and PASS: All three front panel LEDs should flash at about 4 Hz.4 depress Local Mode switch.3 FAIL: One (or more) of the LEDs remain unlit. Bottom (Local Mode) LED = CIP failure Middle (Bypass) LED = MIDI port failure
Switch Test: ( Tests the front panel switches ) Action: Response: This is a continuation of the IO Port Test. When a switch is depressed, its companion LED will go off as long Depress each switch, one switch at a time. as the switch is engaged. Release the switch and the LED should resume flashing.
1 2 3 4
C ontrol I ntreface P ort If DUT is already powered up, remove power then reapply power. See Note 2 The LEDs will not be flashing in sync, but that�s ok.
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