Sennheiser EM 100 G2 Service Manual

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SA 040818
Subject to alterations
Sennheiser electronic GmbH & Co. KG • 30900 Wedemark
Phone: +49 (5130) 600 0 • Fax: +49 (5130) 600 300 1/32
EM 100 G2
EM 300 G2
EM 500 G2
Service manual
Short Description
The three stationary receivers EM 100 G2, EM 300 G2 and EM 500 G2
are
,True Diversity receivers and are equipped with the HDX noise reduction
system. Each receiver has a switching bandwidth of 36MHz in the UHF band.
Features
1440 UHF frequencies available for interference-free reception.
Direct channel selection via presets.
Scan function for finding free receive channels.
Low battery warning on transmitter and receiver.
Squelch pilot tone for interference-free operation.
Sound check mode for checking transmission conditions
(only EM 500 G2).
POWER
SET
SET
ON
300
ON
SET
500
EM 100 G2
EM 300 G2
EM 500 G2
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1 2 3 4 5 6 ... 31 32

Summary of Contents

Page 1 - EM 500 G2

SA 040818Subject to alterationsSennheiser electronic GmbH & Co. KG • 30900 WedemarkPhone: +49 (5130) 600 0 • Fax: +49 (5130) 600 300 1/32EM 100 G2

Page 2 - Safety requirements

EM 100 G2, EM 300 G2, EM 500 G208/2004 10/324 Exploded view4.1 Exploded view: EM 100 G2001002003002005004005004008009012018018018017013013016016019007

Page 3 - Table of contents

EM 100 G2, EM 300 G2, EM 500 G211/32 08/20044.2 Exploded view: EM 300 G2, EM 500 G2001002003002008009011012013014016016019020015012010013007003006*Pos

Page 4 - 1 Controls and indicators

EM 100 G2, EM 300 G2, EM 500 G208/2004 12/32Pos Bezeichnung 001 Casing002 Lens screw003 Holder004 Lens screw005 Spring washer006 Front module with dis

Page 5 - 2 Technical data

EM 100 G2, EM 300 G2, EM 500 G213/32 08/20045 Test and alignment instructions5.1 Measuring and test equipment• 1 Spectrum analyzer up to at least 1.5

Page 6 - 2.3 AF part

EM 100 G2, EM 300 G2, EM 500 G208/2004 14/325.3 Test tableSequence Type of measure-ment/adjustmentSignal input Settings Measuring point/test pointRequ

Page 7 - 3 Description

EM 100 G2, EM 300 G2, EM 500 G215/32 08/20043 RF moduleRF module removal:1. Loosen the lens screw (RF board fastening, see Exploded view, Pos. 12).2.

Page 8 - 3.2 RF module

EM 100 G2, EM 300 G2, EM 500 G208/2004 16/323.12 Balanced RF output voltage at 1kHz peak deviationFeed in via XLR socket ––+18dBu and +6.1V–3.13 Unbal

Page 9 - 3.3 Display module

EM 100 G2, EM 300 G2, EM 500 G217/32 08/20045.4 Reading out/changing unit data via the “DATA“ service interface5.4.1 OverviewYou can read out and chan

Page 10 - 4 Exploded view

EM 100 G2, EM 300 G2, EM 500 G208/2004 18/325.4.5 Commissioning after board replacementAfter you have fitted a new board to the unit, you must use the

Page 11 - 11/32 08/2004

EM 100 G2, EM 300 G2, EM 500 G219/32 08/20046 Circuit diagramsON/OFFSELECTDOWNUP+5V+5Vsw+6Vsw+10-15V/50mADATA/CLK100mw max+10dBu max-+-22...+18dBuLEVE

Page 12 - Pos Bezeichnung

EM 500 G2, EM 300 G2, EM 100 G22/32 08/2004Safety requirementsObserve safety regulations.Observe ESD instructions while handling electrostatically end

Page 13 - 5.2 Measuring set-up

EM 100 G2, EM 300 G2, EM 500 G208/2004 20/321.0KJR2482.2KJR2494.7KJR2461.0KJR647*33KJR229100KJR25133KJR700*0.0RR260*47.5KFR632*1.0KJR646*0.0RR261**1.0

Page 14 - 5.3 Test table

EM 100 G2, EM 300 G2, EM 500 G221/32 08/20043-10pC5*VSSVINVOUTAS440NM-4.5U2123M24C64U620*A01A12A23GND4SDA5SCL6WP7VDD8SN75176U3*RO1RE2DE3DI4GND5A6B7VCC

Page 15 - 15/32 08/2004

EM 100 G2, EM 300 G2, EM 500 G208/2004 22/32SA575DKU100SA575DKU100SA575DKU100+-v-v+NJM062V*U7532184+-v-v+NJM062V*U7556784+-v-v+NJM062V*U9532184+-v-v+N

Page 16 - ± 1 bar

EM 100 G2, EM 300 G2, EM 500 G223/32 08/2004MM9329J102*MM9329J202*J100BNC-H*1GND2GNDJ200BNC-H*1GND2GND2-6pC134*0.65-2.5pC102*2-6pC106*2-6pC234*0.65-2.

Page 17 - 5.4.3 Required software

EM 100 G2, EM 300 G2, EM 500 G208/2004 24/322-6pC330BH4127U400OSC12ON34Gnd5IF67Vcc8Vcc9RSSI10111213DET.14Gnd1516BH4127U300OSC12ON34Gnd5IF67Vcc8Vcc9RSS

Page 18

EM 100 G2, EM 300 G2, EM 500 G225/32 08/2004LMX2316U500GND3GND4fin5fin6Vcc17OSC8GND9CE10Clock11Data12LE13Fo/LD14Vcc215Vp16FLo1CPo2J315FLZ-RSM1-TB12345

Page 19 - 6 Circuit diagrams

EM 100 G2, EM 300 G2, EM 500 G208/2004 26/32C1220nKC2220nKC6220nKC7220nKC8220nKC131.0uKC310u10VC410u10VC510u10VC154.7u10VC910u10VC10220u10VC11220u10VC

Page 20

EM 100 G2, EM 300 G2, EM 500 G227/32 08/2004NCMAINBOARD6153(EM100 ONLY)RF MODULBALANCED AF OUTJ300NC-AF2NC NC+AF2/SET/ON-OFFFLEXIBLE CONNECTORFLEXIBLE

Page 21

EM 100 G2, EM 300 G2, EM 500 G208/2004 28/32412510791 B8801C211C212C213C214C215C230C231C232C233C240C241C242C243C244C245C246C247C630C631D211D212D213D21

Page 22 - 08/2004 22/32

EM 100 G2, EM 300 G2, EM 500 G229/32 08/2004510791 LTP11TP2TP20TP212TP226TP227TP229TP233TP234TP240TP241TP242TP244TP277TP601TP605TP606TP631TP9TP177TP17

Page 23 - 23/32 08/2004

EM 500 G2, EM 300 G2, EM 100 G23/32 08/2004Table of contents1 Controls and indicators ...

Page 24 - ZF1/ZF2_2

EM 100 G2, EM 300 G2, EM 500 G208/2004 30/32R41V2886413 BR456C444C200C201C202C203C204C205C206C207C208C209C210C211C212C213C214C215C216C217C218C219C220C

Page 25 - 25/32 08/2004

EM 100 G2, EM 300 G2, EM 500 G231/32 08/2004LTP10TP13TP15TP16TP18TP2TP200TP201TP202TP3TP4TP402TP6TP8TP1TP19TP20TP21TP22TP23TP24TP25TP17TP303TP600TP604

Page 26 - Circuit diagram

EM 100 G2, EM 300 G2, EM 500 G208/2004 32/3277653BC1C13C14C15C16C2C3C4C5C6C7C8C9J1M1R10R11R12R13R14R15R16R17R18R19R2R20R21R22R3R4R5R6R7R8R9TP1TP2TP3TP

Page 27 - Interconnector assignmet

EM 100 G2, EM 300 G2, EM 500 G208/2004 4/321 Controls and indicatorsFront쐃 Headphone output, ¼" (6.3mm) jack socket (PHONES)(only EM 500 G2)쐇 He

Page 28 - Mainboard, component side

EM 100 G2, EM 300 G2, EM 500 G25 08/20042 Technical data2.1 GeneralNominal output ______________________ +12VDCOperating voltage ____________________

Page 29 - 510791 L

EM 100 G2, EM 300 G2, EM 500 G208/2004 6/32BlockingEM 100 G2, EM 300 G2______________ ≥ 70dBEM 500 G2_________________________ ≥ 75dBSquelch ________

Page 30 - RF board, component side

EM 100 G2, EM 300 G2, EM 500 G27 08/20043 DescriptionThe receiver has a modular structure and comprises the following boards:• Mainboard• Display mod

Page 31 - RF board, solder side

EM 100 G2, EM 300 G2, EM 500 G208/2004 8/323.1.3 Evaluation of the TX battery signalThe battery telegram sent by the transmitter reaches the U60-2 tr

Page 32

EM 100 G2, EM 300 G2, EM 500 G29 08/20043.2.1 RF module shielded compartmentsThe shielded compartments on the RF module perform the following functio

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