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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
RR 430 CD
Abgleichvorschriften / Adjustment Procedures
2. Tuner
Measuring instruments: Signal generator, sweep generator, oscilloscope. Function switch: Radio Adjustment 1. AM IF Preparations Couple in a sweep signal of 455kHz to L504 (ferrite aerial) via a loop aerial. Oscilloscope to testpoint TP 5 (IC501 Pin 7). Band switch: MW MW fu 515kHz, fo 1630kHz Couple in a standard signal to L504 (ferrite aerial) via a loop aerial, (fmod = 1kHz, m = 30%, Ua as low as possible so that the signal is just visible). Oscilloscope to the headphone socket. Band switch: MW MW 558kHz, MW 1440kHz Couple in a standard signal to L504 (ferrite aerial) via a loop aerial, (fmod = 1kHz, m = 30%, Ua as low as possible so that the signal is just visible). Oscilloscope to the headphone socket. Band switch: MW LW fu 142kHz, fo 292kHz Couple in a standard signal to L505 (ferrite aerial) via a loop aerial, (fmod = 1kHz, m = 30%, Ua as low as possible so that the signal is just visible). Oscilloscope to the headphone socket. Band switch: LW LW 153kHz, LW 261kHz Couple in a standard signal to L505 (ferrite aerial) via a loop aerial, (fmod = 1kHz, m = 30%, Ua as low as possible so that the signal is just visible). Oscilloscope to the headphone socket. Band switch: LW FM fu 87.35MHz, fo 108,25MHz Couple in a standard signal via a 10nF capacitor to testpoint TP 1 / TP 2 (GND) (fmod = 1kHz, �f = 22.5kHz, Ua as low as possible so that the signal is just visible). Oscilloscope to the headphone socket. Band switch: FM FM 88MHz, FM 106MHz Couple in a standard signal via a 10nF capacitor to testpoint TP 1 / TP 2 (GND) (fmod = 1kHz, �f = 22.5kHz, Ua as low as possible so that the signal is just visible). Oscilloscope to the headphone socket. Band switch: FM Adjustment Process Adjust to maximum with T501.
2. MW Oscillator
At tuning minimum (515kHz) adjust with T502 and at tuning maximum (1630kHz) adjust with VC501-C to maximum output. Repeat this adjustment alternately.
3. MW Aerial bandpass
At 558kHz adjust to maximum with L504 (MW aerial coil, move). At 1440kHz adjust to maximum with VC501-D. Repeat this adjustment alternately.
4. LW Oscillator
At tuning maximum (292kHz) adjust with TC502 to maximum output.
5. LW Aerial bandpass
At 153kHz adjust to maximum with L505 (LW aerial coil, move). At 261kHz adjust to maximum with TC501. Repeat this adjustment alternately.
7. FM Oscillator
At tuning minimum (87,35MHz) adjust with L502 and at tuning maximum (108,25MHz) adjust with VC501-A to maximum output. Repeat this adjustment alternately.
8. FM Aerial bandpass
At 88MHz adjust to maximum with L503 (bend). At 106MHz adjust to maximum with VC501-B. Repeat this adjustment alternately.
L504
L505
VC501
B A
C D
TP 1 TP 2
TC501 L502 L503 T501 TC502 T502
TP 5
GRUNDIG Service
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