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BASSMAN 300

p/n 021-3302-010 (120V)

SERVICE MANUAL

CONTENTS:

Notices

Specifications

Circuit description

Parts lists:

PCB assembly

Chassis assembly

Cabinet assembly

End item

Footswitch assembly

Footswitch PCB

Schematics

Service diagrams

Fender Musical Instruments Corp.  8860 East Chaparral Road Suite 100 Scottsdale, AZ 85250

Summary of Contents for Bassman 300

Page 1: ...otices Specifications Circuit description Parts lists PCB assembly Chassis assembly Cabinet assembly End item Footswitch assembly Footswitch PCB Schematics Service diagrams Fender Musical Instruments...

Page 2: ...ed with an asterisk indicate the required use of that specific part This is necessary for RELIABILITY and SAFETY requirements DO NOT USE A SUBSTITUTE A coded naming convention is used in the descripti...

Page 3: ...0Hz Graphic equalizer 12 dB 31 5Hz 63Hz 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz 16kHz Mid notch 20 dB 700Hz Low boost 10 dB 40Hz High boost 10 dB 6kHz Compressor Crossover 400Hz Ratio 1 1 min to 4 1 max...

Page 4: ...izer which can be selected by the footswitch or graphic EQ button S7 on the front panel The far right graphic EQ slider R71 is a 10dB trim for graphic EQ gain compensation Next the signal is presented...

Page 5: ...tions 1 Turn on the 300T and let it warm up for at least two minutes with the STANDBY switch in the ON position Make sure the amplifier is connected to a speaker or equivalent load 2 Remove the bias c...

Page 6: ...P CA 100pF 100V 5 C37 2 039265 CAP CA 2200pF 100V 5 C79 C110 7 039259 CAP CA 220pF 100V 5 C8 C40 C104 106 C114 C116 5 038873 CAP CA 22pF 100V 5 C6 C15 C42 C59 C83 1 039261 CAP CA 330pF 100V 5 C142 2 0...

Page 7: ...R335 R361 14 064089 DIODE 1N4003 LL CR75 78 CR80 87 CR101 102 17 026730 DIODE 1N4006 800V 1A CR62 64 CR72 CR88 95 CR97 100 CR103 53 006260 DIODE 1N4448 SIGNAL LL CR1 25 CR27 CR29 39 CR44 50 CR52 CR54...

Page 8: ...053450 JACK STEREO R A J2 4 3 026481 JACK TIP J9 11 1 049892 JACK XLR MALE J6 3 031871 LED BI COLOR 5mmx5mm LD6 8 5 028039 LED RED 5x5mm SLB 55VR3 LD2 5 LD9 1 033177 LED RED GREEN 5x5mm BI COLOR LD1 1...

Page 9: ...2 R19 R26 R32 R37 R45 R49 R92 93 R110 R210 R215 R219 R224 R236 R246 247 R251 252 R264 R279 R282 R286 2 024971 RES CF 1 4W 5 2 2k LL R170 R218 2 025075 RES CF 1 4W 5 2 2M LL R225 R267 3 029455 RES CF 1...

Page 10: ...11 R123 R139 R143 R334 R369 2 025942 RES CF 1 4W 5 7 5k LL R161 R173 1 024980 RES CF 1 4W 5 8 2k LL R149 8 025068 RES CF 1 4W 5 820k LL R288 R299 303 R321 322 2 027353 RES FILM 1W 100K LL 5 LL R326 32...

Page 11: ...XSTR PNP 2N4403 TO 92 Q10 Q13 14 Q16 18 3 031729 DIODE ZEN 1N5231B 5W 5 1V 5 CR42 CR51 CR53 1 029898 DIODE ZEN 1N5236B 7 5V 5 LL CR43 3 031635 DIODE ZEN 1N5240B 10V 5 CR40 41 CR61 2 031019 DIODE ZEN...

Page 12: ...16 20X1 8 NI REAN JACKS 5 016352 NUT HEX 3 8 32x3 32 TK NI 1 4 JACKS 12 039370 RETAINER ANCHOR TUBE SPRING 6550 s 12 053956 SPRING EXTENSION 2 49x 15 6550 s 6 039364 WASHER EPDM TUBE CLAMP DAMPNER 65...

Page 13: ...344000 SCREW SMA 10x3 4 OHP IN 0 03 8 0027648000 TAPE ALUM 6 x60YDS 1 56 0051343000 VINYL TOLEX 4227A END ITEM QTY PART DESCRIPTION REFERENCE DESIGNATION 1 0057738000 CHASSIS ASSY BASSMAN 300 120V 1 0...

Page 14: ...2000 GRILLE BASSMAN 300 1 0053598000 GRILLE REAR SUNN 300T 8 0050311000 NUT 2 56 NYLON INSERT 2CNME Z NAMEPLATE 8 0036112000 SCRW SMAB 6x1 1 4 OHP BLX w WS GRILLE MOUNTING 8 0036199000 SCRW M 8 32x1 3...

Page 15: ...FTSW 1 028143 HSG END CUP RIGHT FTSW 1 028141 HSG FTSW 3 BUTTON 1 031647 NUT HEX 12mmx1mm Nl 8 028684 SCRW SMB 6x3 8 PH PHS BLX 3 031899 WSHR NYL 485x 775x 150 TK FOOTSWITCH PCB ASSEMBLY QTY PART DES...

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