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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
Testing Performance To test the voltage measurement accuracy (oscilloscope)
Acquire the data
Use the following table for steps 1 through 5. Oscilloscope Settings
V/Div 4 V/Div 1 V/Div 400 mV/Div 40 mV/Div 40 mV/Div 400 mV/Div 1 V/Div 4 V/Div Offset -7.0 V -1.75 V -700.0 mV -70.0 mV 70.0 mV 700.0 mV 1.75 V 7.0 V Supply -14.0 V -3.50 V -1.40 V -140.0 mV 140.0 mV 1.40 V 3.50 V 14.0 V
Voltage Readings
Upper Limit -13.7 V -3.43 V -1.37 V -137.0 mV 143.0 mV 1.43 V 3.57 V 14.3 V Lower Limit -14.3 V -3.57 V -1.43 V -143.0 mV 137.0 mV 1.37 V 3.43 V 13.7 V
1 Set up the oscilloscope according to the table above. a Press the Chan key. b Move the cursor to the V/Div field, then use the RPG knob to dial in the V/Div values shown on the first line of the table. c Move the cursor to the Offset field. Use the front-panel keyboard to enter the offset value shown on the first line of the table. Use the left and right cursor-control keys to select either mV or V. 2 Acquire the zero input voltage. a Disconnect the power supply from the channel input. b Press the blue shift key, then press the Run key. Wait for approximately five seconds (averaging complete), then press Stop. c Press the Markers key. Move the cursor to the Va Volts field. Using the RPG knob, move the Va marker over the oscilloscope trace on the display. 3 Acquire the measured voltage. a Connect the power supply to the channel input. Set the power supply voltage according to the first line of the table above. b Press the blue shift key, then press the Run key. Wait for approximately five seconds (averaging complete), then press Stop. c Press the Markers key. Move the cursor to the Vb Volts field. Using the RPG knob, move the Vb marker over the oscilloscope trace on the display. d Record the voltage in the Va to Vb field in the performance test record. 4 Repeat steps 1 through 3 for the second line of the table, then for the rest of the lines
of the table for channel 1. 5 Repeat from "Set up the logic analyzer" for channel 2, replacing channel 1 with channel 2 where applicable.
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