drawings and diagrams) contained in this document is the property of MUSIC Group IP Ltd., its subsidiaries or content providers, and is protected by intellectual property (copyright,
trademark, patents, etc) laws, international treaty provisions and other laws. Any unauthorized disclosure, use, application, reproduction, modification, lease, sale, transmission or
any other dealings in the information may violate applicable laws and result in civil and/or (where applicable) criminal liabilities and penalties.
Ultra-compact 2,000-watt class-d bass amplifier with
tube/mosfet preamp, optical compressor and
dynamizer technology (13 pages)
Summary of Contents for Bugera G20 INFINIUM
Page 1
Service Manual Created: 02 July 2015 G20 INFINIUM 20-Watt Class-A Tube Amplifier Head with INFINIUM Tube Life Multiplier, MORPH EQ and Reverb Specifications ..............2 PCB Schematic .
- Speaker-emulated output with 1 x 12 or 4 x 12 voicing option - Impedance switch (4, 8 and 16 Ohms) to match virtually any speaker cabinet - Effects loop with effects level switch - Modern-style look and feel - 3-Year Warranty Program* - Designed and engineered by BUGERA Germany...
G20 INFINIUM Parts List Hi Pcb Assemblies Quantity Unit S.Sku M.Sku Description Reference Designators Notes 1.0000 PC Q05-A5I00-07609 A05-A5I00-07609 PCB ASSEMBLY;P0A5I;REV:A;HAND INSERT;NO:828100 1.0000 PC Q05-B4001-00105 A05-B4001-00105 PCB ASSEMBLY;P0B40;PCB:1;REV:E;HI;MAIN 1.0000 PC Q05-B4002-00104 A05-B4002-00104 PCB ASSEMBLY;P0B40;PCB:2;REV:D;HI;REAR Cable Quantity Unit S.Sku M.Sku Description...
Page 10
G20 INFINIUM Parts List Capacitor Quantity Unit S.Sku M.Sku Description Reference Designators Notes 2.0000 PC CAP E;100uF;10V;PITCH:2mm5;5mm x 11mm;VERTICAL 12.7-15- [P0B40:1: {2.0}(C85,C91)] *NOT available in DP 26.0000 PC CAP E;47uF;25V;PITCH:2mm5;5mm x 11mm;VERTICAL 12.7-15-9mm [P0B40:1: {17.0}(C14,C18,C22,C27,C30-C31,C59- *NOT available in DP C60,C63,C68,C73,C79,C92-C93,C122,C155,C175)] 2.0000 PC...
G20 INFINIUM Parts List Quantity Unit S.Sku M.Sku Description Reference Designators Notes 4.0000 PC CAP CER;100nF;100V;X7R;10%;SMD1206 [P0B40:1: {4.0}(C133-C134,C137-C138)] *NOT available in DP 1.0000 PC CAP FILM;680nF;100V;MPF;10%;PITCH:5mm;BOX;VERTICAL 12.7-15- [P0B40:1: {1.0}(C107)] *NOT available in DP 1.0000 PC [P0B40:2: {1.0}(C57)] *NOT available in DP FILM;2uF2;100V;MPF;10%;PITCH:20mm;HEIGHT:17mm;WIDTH:23m...
Page 12
G20 INFINIUM Parts List Connector Quantity Unit S.Sku M.Sku Description Reference Designators Notes 2.0000 PC R84-22000-06018 B84-22000-06018 CRIMP TERMINAL;PITCH:3mm96;AWG18-22;A3963TOP-2 14.0000 PC R84-25016-06014 B84-25016-06014 CRIMP TERMINAL;PITCH:2mm0;AWG24-30;A2008TOP-2 1.0000 PC R84-42050-00155 B84-42050-00155 CRIMP CONNECTOR;LUG;INNER DIA:4mm3;AWG 14-18;WIRE MOUNT;STRAIGHT Diode Quantity Unit S.Sku M.Sku Description...
Page 13
G20 INFINIUM Parts List Hardware Quantity Unit S.Sku M.Sku Description Reference Designators Notes 60.0000 PC NAIL;CROWN:2mm2;WIDTH:1mm27;THICKNESS:1mm0;LENGTH:25 *NOT available in DP mm;18-GAUGE (0.49*0.40) FINISH;GALVANIZED 33.0000 PC NAIL;STAPLE;CROWN *NOT available in DP 10mm;LEGLENGTH:10mm;WIDTH:1.2mm;THICKNESS:0mm6;FINISH: GALVANIZED 1.0000 PC CABLE TIE;NYLON;4in;COLOR: *NOT available in DP 0.7000 G...
Page 14
[P0B40:1: {1.0}(IC18)] 1.0000 PC T22-31001-40514 D22-31001-40514 IC;LOGIC;74HC14;SOP [P0B40:1: {1.0}(IC24)] 1.0000 PC T22-31007-40514 D22-31007-40514 IC;LOGIC;74HC74;SOP [P0B40:1: {1.0}(IC23)] 1.0000 PC T24-18081-61832 D24-18081-61832 IC;MICROCONTROLLER;ATMEGA8A-AU;SMD;TQFP32 1.0000 PC T24-48030-02803 D24-48030-02803 IC;MICROCONTROLLER;MAX809STRG;Vth:2.93V;SOT [P0B40:1: {1.0}(IC22)] 1.0000 PC D33-00001-30189 IC;MICROCONTROLLER, PROGRAMMED;FIRMWARE G20 INFINIUM [P0B40:1: {1.0}(IC17)] V1.0 Page 14...
Page 15
G20 INFINIUM Parts List Quantity Unit S.Sku M.Sku Description Reference Designators Notes 1.0000 PC U10-00000-47170 E10-00000-47170 LED;RED;LEN:RED;DIFFUSE;HB;3MM [P0B40:1: {1.0}(LD1)] ROUND;ANGLE;BASE:4.5X5.08X6 1.0000 PC E10-00000-79899 LED NB;3mm0 ROUND;GREEN;DIFFUSE;NORMAL [P0B40:1: {1.0}(LD2)] BRIGHT;ANGLE;BASE:4.5X5.08X6 1.0000 PC U10-51610-05431 E10-51610-05431 LED HIB;3mm ROUND;AMBER;VERTICAL;NO RING;WAVELENGTH:610 [P0B40:1: {1.0}(LD3)] 1.0000 PC...
Page 16
G20 INFINIUM Parts List Plastic Part Quantity Unit S.Sku M.Sku Description Reference Designators Notes 4.0000 PC W51-00100-14745 G51-00100-14745 PLASTIC;RUBFOOT;P0738;DST.NO:001;DPT.NO:14745;(P0738- RUBFOOT-REVA.DWG) 2.0000 PC G52-00100-07083 PLASTIC;SWITCH KNOB;P0491;ABS PA757;MOULDING;YS1284A;BLACK;SWITCH;I00168P;DST.NO:001;DP T.NO:07083;(I00168P-SWITCH_KNOB_18MM-REVA.DWG) 1.0000 PC W52-00100-14962 G52-00100-14962 PLASTIC;PUSH KNOB;I00499P;BLACK CHROME;DST.NO:001;DPT.NO:14962;(I00499P-PUSH_KNOB-REVA) 2.0000 PC W52-80500-09382 G52-80500-09382 KNOB;SWITCH;FOOTPEDALS;BLACK;DWG.NO:09382;(R14-GUITAR- SWITCHKNOB1-REVA.DWG) 1.0000 PC...
G20 INFINIUM Parts List Plug Socket Quantity Unit S.Sku M.Sku Description Reference Designators Notes 1.0000 PC W64-14152-03710 G64-14152-03710 PLUG;PCB;PLUG;JACK PHONE;STRAIGHTPCB LUGS;MONO [P0B40:2: {1.0}(X7)] 6mm3;DUAL TIP/NO RING CONTACTS;NO NUT/WASHER;METAL BUSHING;(CHUNSHENG PJ-622HA-EP) 5.0000 PC W64-16212-00005 G64-16212-00005 PLUG;PCB;PLUG;JACK STEREO 6mm3;STRAIGHTPCB LUGS;NO [P0B40:2: {5.0}(X2-X6)] NUT/WASHER;METAL BUSHING;(CHUNSHENG PJ-632HA)
Page 18
G20 INFINIUM Parts List Resistor Quantity Unit S.Sku M.Sku Description Reference Designators Notes 4.0000 PC RESISTOR;CARBON;13Kohm;5%;0W063;SMD603 [P0B40:1: {2.0}(R72,R75)] *NOT available in DP 1.0000 PC RESISTOR;CARBON;2ohm2;5%;0W063;SMD603 [P0B40:1: {1.0}(R89)] *NOT available in DP 5.0000 PC RESISTOR;CARBON;5ohm1;5%;0W063;SMD603 [P0B40:1: {5.0}(R84,R99-R100,R106-R107)] *NOT available in DP 1.0000 PC...
Page 19
G20 INFINIUM Parts List Quantity Unit S.Sku M.Sku Description Reference Designators Notes 2.0000 PC RESISTOR;CARBON;470Kohm;5%;0W063;SMD603 [P0B40:1: {2.0}(R114,R169)] *NOT available in DP 2.0000 PC RESISTOR;CARBON;820Kohm;5%;0W063;SMD603 [P0B40:1: {2.0}(R115,R162)] *NOT available in DP 4.0000 PC RESISTOR;CARBON;1Mohm;5%;0W063;SMD603 [P0B40:1: {4.0}(R3,R129,R200,R221)] *NOT available in DP 2.0000 PC RESISTOR;METAL;200ohm;1%;0W063;SMD603...
Page 20
G20 INFINIUM Parts List Quantity Unit S.Sku M.Sku Description Reference Designators Notes 2.0000 PC RESISTOR;CEMENT;1Kohm50;5%;5W;LEAD [P0B40:1: {2.0}(R235-R236)] *NOT available in DP WIRE;RADIAL;PITCH:5mm;PRECUT:3mm1+/-0mm5 Potentiometer Quantity Unit S.Sku M.Sku Description Reference Designators Notes 2.0000 PC I03-00000-91676 POTENTIOMETER;20 kohm;0.050W;TAPER:15A;20 %;MONO;F- [P0B40:1: {2.0}(VR1,VR4)] SHAFT:15MM;ANGLED;NO NUT AND WASHER;80- 150GF;HHTORQUE;SOUNDWELL...