1 TABLE OF CONTENTS...2 2 ADDITIONAL FEATURES AND DIFFERENCES TO GIGASET 3000...3 2.1 DECT-SPECIFIC DETAILS...3 3 PROCEDURES...4 3.1 SERVICE PROCEDURES FOR GIGASET 4000 CLASSIC...4 3.2 SERVICE PROCEDURES FOR GIGASET 4000 COMFORT...5 3.3 SERVICE PROCEDURES FOR GIGASET 4010/ 15 CLASSIC/ COMFORT BASE STATION...6 4 INFO STICKER/ LASERED IMPRINT AND STICKER ON MICROPROCESSOR...8 5 FAULT CODES...9 6 FAULT DIAGNOSIS AND ELIMINATION...10 6.1 FUNCTIONAL TEST...10 6.2 RECOGNITION OF TYPICAL CUSTOMER PROBLEMS...12 6.3 CHECK OF COMPLETE SYSTEM WITH FAULT DESCRIPTION OF CUSTOMER...16 6.4 CHECK OF COMPLETE SYSTEM WITHOUT FAULT DESCRIPTION OF CUSTOMER...16 6.5 CHECK OF COMPONENT WITH FAULT DESCRIPTION OF CUSTOMER...16 6.6 CHECK OF COMPONENT WITHOUT FAULT DESCRIPTION OF CUSTOMER...16 6.7 BLOCK DIAGRAMS OF HANDSETS...17 6.7.1 Classic handset...17 6.7.2 Comfort handset...18 6.8 REPAIR OF MOBILE UNIT GIGASET 4000 CLASSIC AND COMFORT...19 6.8.1 Exploded view G4000 Classic...20 6.8.2 Exploded view G4000 Comfort...21 6.8.3 Disassembling...22 6.8.4 Assembling...29 6.8.5 Board Layout Gigaset 4000 Classic...30 6.8.6 Board Layout Gigaset 4000 Comfort...31 6.8.7 Mobile unit faulty due to humidity...32 6.8.8 SLR (microphone-path faulty)...33 6.8.9 RLR (earphone-path faulty)...34 6.9 REPAIR OF BASESTATION GIGASET 4010/ 4015 CLASSIC/ COMFORT...35 6.9.1 Exploded view...35 6.9.2 Disassembling...36 6.9.3 Assembling...36 6.9.4 Board Layout Gigaset 4010 Classic (EU1 version)...37 6.9.5 Board Layout Gigaset 4010 Comfort (EU1 version)...38 6.9.6 Board layout Gigaset 4015 Classic (EU1 version)...38 6.9.7 Board layout Gigaset 4015 Comfort (EU1 version)...38 6.9.8 Charging problems...39 6.9.9 Base station faulty due to lightning stroke...40