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I was having a hard time finding the problem with this Mackie 1604 unit. I didn't have a schematic. Went looking on the web and found your site and the price was more then reasonable. Ordered it and within the hour had the manual and within 15 minutes had the unit fixed. Best $4.99 I ever spent. Thank you.
Doug
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This is a service manual in every sense of the word ( French and German versions of the text are included, as well as English..)
There are explanations of the mechanical and electrical functions, plenty of mechanical drawings, and the needed schematics. The quality of the scanning is excellent - all the component values are clearly legible - and very usefully there are pcb component layouts, so you can find a component on the schematic, and then very quicky pinpoint its physical location on the relevant pcb.
I cannot see how I can give this manual any less than the maximum 5 stars! Great value for money, which will pay for itself immediately. Excellent all round!
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the manual is great and especially hard to find... thanks for the great service and having a hard to find manuel_
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Please tell us what you think and share your opinions with others. Be sure to focus your comments on the product. You will receive $2.50 of store credit for Your review.
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hat alles sehr gut geklappt. Das Servicemaual ist gut zu verwenden. Die Pläne und Schrift
ist klar und leserlich. Außerdem preiswert. Grüße an alle Hifi-Bastler
BE-3110
17. Disconnect the cables connected to IFa in and IFa out of the unit. 18. Adjust the spectrum analyzer so that the compression modulation peak level can be seen clearly on the spectrum analyzer screen. (Use this item as the reference level.) 19. Set the variable resistance attenuator to 0 dB. 20. Adjust control VR1 (RV1) of the RF ASSY so that the bottom level in the compression modulation of the signal comes to the position set in step 7.
21. Repeat the adjustments in section 4.6 and the adjustments in steps 1 to 20 in section 4.8 three times to raise the accuracy. *1 Observe the following values when adjusting the modulation distortion and compression distortion to facilitate the adjustments. � Clear mode: Meter reading � 6/10 dB mode: Noise waveform on oscilloscope
[Adjustment waveform diagram 1] : [Example of Key Modulation Rate (5.5 dB)]
REF 100.9 dBµV 1dB/ VERTICAL 1dB/ ATT 10 dB A_write B_blank
RBW 1 MHz VBW 1 MHz SWP 200 ms CENTER 41.250 MHz
1dB/div VBW:1MHz RBW:1MHz SPAN:1MHz ST:200ms
SPAN 1.000 MHz
Fig. 4-11 Adjustment Waveform Diagram 1
*2 The above shows one example of the adjustment waveform. Be sure to adjust using the attenuator substitution method. Do not perform adjustment on the screen.
4.9 Setting the Switches of the LOGIC Assy
Switch No. S1 S2 S3 S4 S5 ALL OFF ALL OFF 0 NA D
Jumper No. P1 P3 DE side Not TEST side
Set switches as shown above.
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