Bram Jacobse

Tinkering CD Players & Digital Audio

LHH 0502 Professional Compact Discs Reproduction System

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Philips LHH 0502 Professional Compact Discs Reproduction System

Picture from internet

The LHH 0512 CD Drive Control System –

 

Photo from internet

Back side

 

Photo from internet

The Siemens SICOMP Industry Microcomputers boards inside this LHH , from left to right

  • Siemens SMP-E4-A3 -> CTL_PS 

Photo Internet, the board in the LHH was missing Eprom

  • Siemens SMP-E353 -> GRAF-PROC 

Photo From Internet

  • SDI-1 & 2 Philips special build interface Board
  • RW DEC 

 

  •   9 pins Sub-D —> LHH Remote Controller ?
  • 25 pins Sub-D –> LHH CD-Drive Player ?
  • The Board is missing  a eprom on top of the 2  MAB8400 piggy bag CPU’s.

MAB8400 piggy back photo from internet

  • PDF MAB8400
  • some chips on the board have little modification

Dummy Audio Connections

  • DAO 1 Panel only Empty XLR’s – D.A. converter output Player 1  ?
  • DAO 2 Panel only Empty XLR’s – D.A. converter output Player 2  ?
  • Monitor Panel only Empty XLR’s – Monitor output 1  ?

Photo from internet

  • Behind the XLR panels there is a Siemens power supply

 

Photos from internet

  • Backplane inter connections

  • LHH 0513 CD Drive Control Unit

  • LHH 0511 CD Drive – Based on CD Philips CD300 / 303

 

 

 

 

Inside Based on CD300 , = This version contains Sophi (Sony-Philips )  Board

  • On the back a 25 Sub-D Interface to CD control Unit

  • 5 pin DIN audio 
  • Behind the Frontpanel  thera are some  modification to I2C bus interconnects
  • Behind Front Panel , Special circuit board , I2S interfacing  and PQ code and player control.?

  • The Board behind front contains a MAB8400 piggy back with eprom

 

  • CD Tray with Preset , Ready , On Air Leds
  • Under CD tray there is a small board with 3 relais

 

  • Underside Flatcable to front Panel
  • The AudioDecoder print has a special MAB8400 piggy back + Eprom  

 

  • Servo Print

 

 

  • Audio output from the drive is on a 5 pin DIN connector

 

Met dank aan Toon  , Ruud voor de Foto’s en Info

 

I’m looking for more information , leaflets or any kind of documentation