STUDIO REPAIR » Roland » JD-990  (30 Slides)     [Page 1 of 1] :: Jump To  
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Roland JD-990 Super JD - Synthesizer Module
 
Roland JD-990 - Front View * …
Roland JD-990 - Front View * …
Roland JD-990 - Rear View * Audio Output Jacks & MIDI Trio
Roland JD-990 - Front View * Front Panel Buttons
Roland JD-990 - Expansion Slot * …
Roland JD-990 - Display * Test Menu - OS Version 1.00
  Front View  
  Front View  
  Rear View  
  Front View  
  Expansion Slot  
  Display  
Roland JD-990 - Display * Test Menu - OS Version 1.05
Roland JD-990 - Display * Maintenance & Repair - OS Update from Version 1.00 to 1.05
Roland JD-990 - Display * Test Mode - LCD Test
Roland JD-990 - Opened * …
Roland JD-990 - Main Board * …
Roland JD-990 - Opened * …
  Display  
  Display  
  Display  
  Opened  
  Main Board  
  Opened  
Roland JD-990 - Jack Board * Analog Circuit Board - Component Side
Roland JD-990 - Jack Board * Analog Circuit Board - Soldering Side
Roland JD-990 - Power Supply * …
Roland JD-990 - Power Supply * Voltage Regulators & Rectifier
Roland JD-990 - Power Supply * …
Roland JD-990 - Circuit Board * Hitachi H8/570 Mask-ROM Microcontroller
  Jack Board  
  Jack Board  
  Power Supply  
  Power Supply  
  Power Supply  
  Circuit Board  
Roland JD-990 - Circuit Board * OS ROM - Hitachi HN27C4096 262144-Word×16-Bit EPROM (4MBit/512kByte)
Roland JD-990 - Circuit Board * Roland MB87731A ASIC (EP Chip)
Roland JD-990 - Circuit Board * Roland MB87424APF-G-LBND ASIC (TVF Chip)
Roland JD-990 - Circuit Board * HG62E11B24FS Gate Array for Card I/O
Roland JD-990 - Circuit Board * BOSS TC6088AF Standard Cell (CSP Chip)
Roland JD-990 - Circuit Board * Hitachi HM514280ZP8 4MBit DRAM (40-Pin ZIP) for the CSP Circuits
  Circuit Board  
  Circuit Board  
  Circuit Board  
  Circuit Board  
  Circuit Board  
  Circuit Board  
Roland JD-990 - Circuit Board * Roland HG62E11R46FB Gate Array (IFCS)
Roland JD-990 - Circuit Board * Roland R10-0001 Gate Array
Roland JD-990 - Circuit Board * Burr-Brown PCM61 18-Bit Audio D/A Converter
Roland JD-990 - Circuit Board * Epson SED1335F0B LCD Controller w/ 64kBit SRAM
Roland JD-990 - Battery * Maintenance & Repair - Worn Out Lithium Coin
Roland JD-990 - Battery * Maintenance & Repair - Replaced CR2032 Lithium Coin
  Circuit Board  
  Circuit Board  
  Circuit Board  
  Circuit Board  
  Battery  
  Battery  

 
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