Download
Share
Print this page
  1. Manuals
  2. Brands
  3. Fender Manuals
  4. Amplifier
  5. Bassman 1200
  6. Service manual

Fender BASSMAN 1200 Service Manual

Hide thumbs Also See for BASSMAN 1200:

Advertisement

Quick Links

Fender Musical Instruments Corp. 8860 East Chaparral Road Suite 100 Scottsdale, AZ 85250
BASSMAN 1200
(This is the model name for warranty claims)
P/n 021-3300-010 (120V)
CONTENTS:
Notices
Schematics
Service diagrams
PCB assembly
Footswitch assembly

Advertisement

loading

Related Manuals for Fender BASSMAN 1200

Summary of Contents for Fender BASSMAN 1200

  • Page 1: Table Of Contents

    (This is the model name for warranty claims) P/n 021-3300-010 (120V) SERVICE MANUAL CONTENTS: Notices Specifications Circuit description Parts lists: PCB assembly Chassis assembly End item Footswitch assembly Footswitch PCB Schematics Service diagrams Fender Musical Instruments Corp. 8860 East Chaparral Road Suite 100 Scottsdale, AZ 85250...

  • Page 2: Service Manual

    Fender Musical Instruments Co. All specifications subject to change without notice. For warranty repair service, only Fender specified part numbers are to be used. It is recommended they also be used for post-warranty maintenance and repair.

  • Page 3: Specifications

    BASSMAN 1200 (This is the model name for warranty claims) SPECIFICATIONS Product Release No.: PR 513 (This is not a model number) Part Number: 120V Version : 21-330010 240V Aus : 21-333010 230V UK : 21-334010 230V : 21-336010 100V JPN...

  • Page 4: Circuit Description

    BASSMAN 1200 (This is the model name for warranty claims) CIRCUIT DESCRIPTION The Bassman 1200 Bass Amplifier employs many new technologies in various sections. This document is a brief overview. Preamp The preamp section employs two 12AX7 tubes. Channel one (V1) is fairly conventional, while channel two (V2) uses a second tube with additional op-amp gain (U2B) to provide a 60's style overdrive sound.
  • Page 5 BASSMAN 1200 (This is the model name for warranty claims) Power Amplifier The power amplifier employs class AB topology in the pre-driver circuit Q8-Q11. Quiescent current is established with transistors Q12-Q13. Driver transistors Q16-Q17 provide drive for Q23-Q26, and Q31-Q34. Transistors Q19,Q21, and Q27-Q30 provide positive “on demand”...

  • Page 6: Parts Lists

    BASSMAN 1200 (This is the model name for warranty claims) PARTS LIST NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY PRINTED CIRCUIT BOARD ASSEMBLY PART # DESCRIPTION REFERENCE DESIGNATION 0052047000 BRIDGE RECT 35A 800V BR1 BR2 0048451000 BUTTON PUSH OFF WHITE...
  • Page 7 BASSMAN 1200 (This is the model name for warranty claims) PARTS LIST NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY PRINTED CIRCUIT BOARD ASSEMBLY (CONT) PART # DESCRIPTION REFERENCE DESIGNATION 0047165000 CAP MPF .01UF 250V C138 0027267003 CAP MPF .022UF 100V...
  • Page 8 BASSMAN 1200 (This is the model name for warranty claims) PARTS LIST NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY PRINTED CIRCUIT BOARD ASSEMBLY (CONT) PART # DESCRIPTION REFERENCE DESIGNATION 0025802000 FSTN TAB MALE .250 x .032 PCB MT CP1-11 0025996000 FUSE CLIP PCB .250 5MM FUSE...
  • Page 9 BASSMAN 1200 (This is the model name for warranty claims) PARTS LIST NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY PRINTED CIRCUIT BOARD ASSEMBLY (CONT) PART # DESCRIPTION REFERENCE DESIGNATION 0028862001 RES CF 1/4W 5% 1.3K R159-160 0024969001 RES CF 1/4W 5% 1.5K...
  • Page 10 BASSMAN 1200 (This is the model name for warranty claims) PARTS LIST NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY PRINTED CIRCUIT BOARD ASSEMBLY (CONT) PART # DESCRIPTION REFERENCE DESIGNATION 0024991001 RES CF 1/4W 5% 39K R68 R80 R84 R105 R109 R186-187...
  • Page 11 BASSMAN 1200 (This is the model name for warranty claims) PARTS LIST NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY PRINTED CIRCUIT BOARD ASSEMBLY (CONT) PART # DESCRIPTION REFERENCE DESIGNATION 0041738001 RES MOX 1W 15k 5% LL R190-191 0028022001 RES MOX 2W 120 OHM 5%...

  • Page 12: Chassis Assembly

    120V 026622 CABLE ASSY PWR 14GA 230V .250 230V 038602 CABLE ASSY PWR AUST .250 TAB 240V AUST 057488 CHASSIS TOP BASSMAN 1200 057487 CHASSIS BASSMAN 1200 053911 COOLING FAN, DC 24V 049650 CORD WRAP STYLE 2 020802 FUSE QA 20mmx5mm 250v 10A...

  • Page 13: End Item

    END ITEM PART # DESCRIPTION REFERENCE DESIGNATION 057748 CHASSIS ASSY BASSMAN 1200 120V 057751 CHASSIS ASSY BASSMAN 1200 240V AUST 057750 CHASSIS ASSY BASSMAN 1200 230V UK 057749 CHASSIS ASSY BASSMAN 1200 230V 057747 CHASSIS ASSY BASSMAN 1200 100V 057752...

  • Page 14: Footswitch Pcb

    BASSMAN 1200 (This is the model name for warranty claims) PARTS LIST NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY FOOTSWITCH END ITEM PART # DESCRIPTION REFERENCE DESIGNATION 053897 PCB ASSY FTSW 3 BTN SUNN BASS 057746 PLATE TOP FOOTSWITCH ASSY 3 BTN BASS...