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
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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Text excerpt from page 7 (click to view)
Philips Semiconductors
30 W class-AB ampli�er with the BLV2045 for 1930 � 1990 MHz (PCS)
Application Note AN98023
MBK418
40 handbook, halfpage PL (W) 30
1900 MHz 20
1990 MHz
10
0 0 2 4 6 Pi (W) 8
VCE = 26 V; Icq = 80 mA.
Fig.4 Output power as a function of input power; typical values.
MBK419
handbook, halfpage
10 Gp
1900 MHz 1990 MHz
(dB) 8
6
4
2
0 0 10 20 30 PL (W) 40
VCE = 26 V; Icq = 80 mA.
Fig.5 Power gain versus output power; typical values.
