Hello
I have a CD player Technics SL-P333.
It's marked 4 dac 18 bits on the face...
In it the components I found are :
a mn1554 (in the part called "digital" on the PCB)...
a mn6625 connected to a memory 2k x 8bits CXK5816 sony (in the part called "Micom" on the PCB)
un mn6623, printed "mash" on it (in the part called "Audio" on the PCB).
Then some op amp :
4558, 4560, lm833
I would like to find the datasheets for the "mn" circuits, or better, find the schematic diagram of the cd player (or one of this generation)...
It is to change the op amps, but I would like to know who do what...
Thanks
Philippe
I have a CD player Technics SL-P333.
It's marked 4 dac 18 bits on the face...
In it the components I found are :
a mn1554 (in the part called "digital" on the PCB)...
a mn6625 connected to a memory 2k x 8bits CXK5816 sony (in the part called "Micom" on the PCB)
un mn6623, printed "mash" on it (in the part called "Audio" on the PCB).
Then some op amp :
4558, 4560, lm833
I would like to find the datasheets for the "mn" circuits, or better, find the schematic diagram of the cd player (or one of this generation)...
It is to change the op amps, but I would like to know who do what...
Thanks
Philippe
MN1554: 4 Bit µComp, 4kBit ROM, 256x4 Bit RAM
4558: BCD-to-7-Segment Decoder
Could be NE4558 also so Google will help you here.
4560: 4-bit BCD Adder
LM833: Dual, lo-noise, ±18V, -40..+105°
Do a Google search for the datasheet.
MN6623: no data
It’s not a lot, but that’s what I found
If you really want to tweak I would consider asking the schematic from Panasonic.
4558: BCD-to-7-Segment Decoder
Could be NE4558 also so Google will help you here.
4560: 4-bit BCD Adder
LM833: Dual, lo-noise, ±18V, -40..+105°
Do a Google search for the datasheet.
MN6623: no data
It’s not a lot, but that’s what I found
If you really want to tweak I would consider asking the schematic from Panasonic.
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