Sony UP-D2550S Service Manual page 65

SECTION 9
BLOCK DIAGRAM
OVERALL
IC209
CN205
SCSI DATA
INPUT SIGNAL
OUTPUT SIGNAL
SCSI-2
CN206
PROTOCOL
SCSI DATA
CONTROLLER
MB86604L
TERMINATOR
IC212
STATUS
DISPLAY
LED
IC210
RROGRAM
ROM
IC201
EEPROM
UP-D2550S (UC,CE)
OVERALL
DMA DATA
DREQ
DACK
RD
CPU DATA
CPU ADDRESS
WR
RD
INTERRUPT
DMAEN
DMABSY
CPU DATA
CPU ADDRESS
WR
CPU DATA
CPU ADDRESS
WR
RD
CPU DATA
CPU ADDRESS
WR
RD
IC204
RXD
TXD
SCK
SYSTEM CPU
H8/337
9-1
OVERALL
IC102 IC107
GRAPHIC DATA
ADDRESS
16 Mbit
RAS
DRAM
CAS
IF-MEMORY
CONTROL
CXD8677Q
IC101
IC105
MASKING
SUB
4 Mbit
COLOR
ROM
PALETTE
MAIN
CXD8869Q
IC106
MASKING
4 Mbit
ROM
9-1
IF-762 BOARD
IC108
16 Mbit
DRAM
NO MOUNT
PRINT DATA
PRT-11
BOARD
TXD
RXD
FRONT PANEL
LED BOARD
LE-190