Guillaume Gastebois schrieb: > Hello, > > OK, > I open my LiDE 90 (very hard not all to destroy...). > I find these IC's : > > GL842 (Genesys well known scanner chip) > GLT44016P (SO40 RAM) > BU6574 (TSSOP20 ????????????) > VHC175 (TSSOP16 quad flip flop) > VHC08 (TSSOP16 quad and) > LB1940 (TSSOP20 constant current driver) > LM324 (SO14 quad op amp) > 1733 (TO-263 regularor) > > Appart the BU6574 (I dont find what it is) I dont find any analog > frontend. Is it possible that this chip is located with leds (seems very > hard to open.....) >
I don't know where the analog frontend may be found. There are arguments for both positions. The BU6574 has enough pins for the job. Did you look at the back of the pcb? In the documentation i found for one cis sensor, the glassy sensor itself contains just the ccd row and the leds. There may be a small pcb on the sensor bar, carrying the analog frontend. But you really don't need to look for the chip and possibly destroy your scanner on the way.. Let's first try to figure out how it is configured from an usb log. Regards, Pierre
