Epson GT-9000 Service Manual page 33

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1.9.1 B027 MAIN Contoi Board

The

MAIN board is the main circuit board in the scanner, containing a logic arcuit and

8027

scanner engine driver circuit. The M37720SlAFP CPU (location: IC14) is used, and the following

memory ICS and gate array are assigned to the memory space:

Memory ICS

256K-bit SRAM:

64K-bit SRAM:

Gate Arrays

E02A12:

Drivers

CR motor (stepping motor) driver (TA789P):

Others

SCSI controller (53CF96):

SCSI terminator (BH9590FP):

Figure 1-19. B027 MAIN Controi Board

1-24

—

. .

IC4/ 5/ 9/ 11

IC24

IC23

IC21

IC25

EO2AO6(IC1O)

Rev. A

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