I found the Datasheets to most of the components on the sys board if that is any help.
G-Link GLT41016-30J4 35ns 64K x 16 CMOS dynamic RAM with extended data output
DatasheetToshiba TC94A03F no exact datasheet found
Toshiba TC94A05F no exact datasheet found
Rohm BA5983FM 3-channel BTL driver for CD, CD-ROM, DVD, and DVD-ROM
Closest Mach I could find DatasheetEliteMT M11B416256A 256 K x 16 DRAM EDO PAGE MODE
DatasheetToshiba TA8493AF 3-PHASE FULL WAVE BRUSHLESS DC MOTOR DRIVER IC FOR CD-ROM DRIVES
DatasheetRohm BA10324AF Quad ground sense operational amplifier
datasheetToshiba TA1323F no datasheet found
H8/3062 looks like hitachi brand flash memory
49600961 looks like eeprom for storing region change counter
OC5TLV14 looks like hitachi brand, same logo as H8/3062 chip
1393036 looks like another eeprom
Mabuchi RF-300C-09550 electric motor