Philips LHH 0502 a closer look

Philips LHH 0502 Professional Compact Discs Reproduction System

The LHH 0512 CD Drive Control System –

• Based on Siemens SICOMP Industry Microcomputers (SICOMP IMC)  Link to Wiki Sicomp

Back

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

• Siemens SMP-E4-A3 -> CTL_PS 

• Siemens SMP-E353 -> GRAF-PROC 

• RW DEC = empty or missing card
• Empty Slot or missing card

 

• SDI-1 Philips build interface Board 

 

•   9 pins Sub-D —> LHH Remote Controller
• 25 pins Sub-D –> LHH CD-Drive Player

 

• Board is missing eprom on top of the MAB8400 piggy bag CPU
• PDF MAB8400

      

• Little modification

High Speed 10MBit/s Logic Gate Optocouplers 

• Modifications

More detail photos will follow

• 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  ?
  

• Behind the XLR panels there is a Siemens power supply

 

• Power Supply

• Backplane inter connections

 

 

 

• LHH 0513 CD Drive Control Unit

 

 

 

 

 

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

 

 

• 25 Sub-D Interface to CD control Unit, 5 pin DIN audio 

 

• Behind the Frontpanel  back side

 

• Behind Front Panel , Special circuit board

• Eprom on MAB8400 ?

• Tray with Preset , Ready , On Air Leds

• Under CD tray 3 relais

• Underside Flatcable to front Panel

• Decoder print ( MAB8400 + Eprom ) 

• Audio on DIN connector

 

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