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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
LC-26P50E LC-32P50E LC-37P50E
TROUBLE SHOOTING TABLE (Continued)
The backlight does not light.
Do all fluorescent lamps fail to light?
YES
NO
Check the fluorescent lamps that do not light. Replace thethe power. If the backlight still and turn on blown fuse(F703) or R1765 fails to light, check the area that has shorted out. In theoutput to CN702? Check that the 380 VDC POWER-UNIT: Is approximately RC701 operates properly. Is each control signal sent toCN1703 in CONNECTOR-CN1704 and the POWER UNIT? (VCC 2(14V), OFL1, INVáOSC) Replace the Z2501 (INV-CTL)(STRH2013).
YES
Replace the fluorescent lamps that do not light. Mainly check T7501, T7502 and their its peripheral circuits as well as Z7501 and peripherals.
In POWERfuse of the circuit for Check the UNIT: INVERTER-UNIT. Has the F703 2.0A in the POWER-UNIT blown? Is the value for R1765 1½ correct?
NO
YES
YES
In the INVERTER-UNIT: Is the power supplied between pins 1 and 2 of CONNECTOR-PN7501? (Pins 1 and 2 on the measuring point PN7501; 380 VDC)
YES
NO
YES
Check the connections of INV-PN7501 and POWER-CN702.
In the INVERTER-UNIT:(VCC 2(14V)_ signal sent to PN7503? Is each control 1Pin , OFL1_6Pin, INV-OSC_3Pin RETURN_2Pin)
YES
NO
NO
Check the OFL1 and INVáOSC-LINE of CONNECTOR-P4101 in the MAIN-UNIT and UR14V-LINE in the POWER-UNIT.
In the INVERTER-UNIT: Is the control signal of Z2501 (INV-CTL)(STR-H2013) output correctly? (PDRV1/V2(22)(20)Pin)
YES
NO
Check the photocoupler (PC 7501-22) and the output transformer (T7503-25). Also check the lamp connector connection.
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