Table of Contents
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d400 Dsp powered loudspeaker system
x300 Lightweight passive loudspeaker
SERVICE MANUAL
®
Index
2
3
Test Preocedures & Adjustments.
4
Schematic Diagrams.
5
PCB Layouts.
6
Passive Version Schematic Diagrams.
7
Notice
✔
Service must be carried out by qualified personnel only. Any tampering carried out by unqualified personnel during the guarantee period
will forfeit the right to guarantee.
✔
For a correct operation of the instrument, after having switched off, be careful to wait at least 3 seconds before switching on again.
✔
To improve the device's specifications, the schematic diagrams may be subject to change without prior notice.
All components marked by this symbol have special safety characteristics, when replacing any of these components use only
manufacturer's specified parts.
✔
The (µ) micro symbol of capacitance value is substituted by U.
✔
Ω
The (
) omega symbol of resistance value is substituted by E.
✔
The electrolytic capacitors are 25Vdc rated voltage unless otherwise specified.
✔
All resistors are 1/8W unless otherwise specified.
✔
All switches shown in the "OFF" position. All DC voltages measured to ground with a voltmeter 20KOhm/V.
✔
Soldering point.
✔
Male connector.
✔
Female connector.
✔
M/F faston connector.
ATTENTION
✒
GENERALMUSIC S.p.A. Sales Division: 47842 S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12
code 270292
☎
Phone +39(0)541/959511 - Fax +39(0)541/957404 - Internet: www.generalmusic.com
Supply voltage.
Logic supply ground.
Test point.
Analog supply ground.
Flag joined with one or more flags
Chassis ground.
with the same signal name inscribed.
Earth ground.
Observe precautions when handling electrostatic sensitive devices.
1
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Table of Contents
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Summary of Contents for LEM d400
- Page 1 Test Preocedures & Adjustments. Schematic Diagrams. PCB Layouts. Passive Version Schematic Diagrams. Spare Part List. d400 Dsp powered loudspeaker system x300 Lightweight passive loudspeaker SERVICE MANUAL Notice ✔ Service must be carried out by qualified personnel only. Any tampering carried out by unqualified personnel during the guarantee period will forfeit the right to guarantee.
- Page 2 - Technical Specification - Technical Specification - Technical Specification - Technical Specification x300 - Technical Specifications - Technical Specifications - Technical Specifications - Technical Specifications d400 d400 d400 x300 x300 x300 Loudspeaker Specifications Loudspeaker Specifications Loudspeaker Specifications Loudspeaker Specifications...
- Page 3 11) FLAT SW Same as above with 100Hz HP Filter to use it with Sub Woofer •If you want to start it again, you have to select LEM INDOOR SW, the led switch off for three TR8 collector pin 3 (+Vcc2) =+63±2Vdc...
- Page 5 RED QFP208 Package pin-out DRW: G.DINI DWG: VARIOUS PCB Layouts: D400 ALL RIGHTS ARE RESERVED, Fuses Board, Input & Controls Board, Cpu/Dsp CKD: G.RICCI DATE: 28-11-03 NO COPIES OR REPRODUCE THIS DOCUMENT WITHOUT WRITTEN Board and Amplifier Board APP: N.ZAVATTA REV: A CONSENT BY GENERALMUSIC.
- Page 7 Wall Mount Support 055030 ** 330E 1/16w 5% Smd Resistor 0603 Supply Assembly 950978 SC31 Aluminium Telescopic Stand (for D400 SAT - T5SA SUB) 055028 ** 220E 1/16w 5% Smd Resistor 0603 950860 SC20 Metallic Telescopic Stand (for D400/X300 standalone)
- Page 8 030124 ** 1u 50V 20% Vert Electrolytic Bipolar Capacitor 030005 ** 1u 50V 20% Vert Electrolytic Capacitor 021024 ** 100n 63V 10% MKT Polyester Capacitor 021008 ** 4n7 63V 10% MKT Polyester Capacitor 011244 ** 4n7 16V 10% Cer. Cap. Smd CL2 X7R 0603 011218 ** 33p 16V 10% Cer.
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