Sharp AR-M350U/M450U, AR-M350N/M450N service manual Bga, CN3

Page 22

SDRAM Block ( Standard & Option )

 

 

=￿￿?%+4%7+6&+#)4#/￿HO￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿!"#!$

 

OSC

 

X3

 

66.666Mhz

 

 

 

 

DRCLK

Clock

 

 

 

 

 

MEMCLK0

buffer

 

 

IC9

 

MAA[12:0]

 

 

 

MD[63:0]

SDRAM

 

 

 

 

 

SDQMA[7:0]

 

 

 

MWE

IC4, 5,6,7

 

 

 

 

 

MCS0

128Mbit x 4

 

 

MRASA

 

 

MCASA

 

 

System

BSEL0A,1A

 

 

CKEA

 

 

Controller

 

 

 

 

 

IC19

 

 

 

456pin-

 

 

 

BGA

 

MEMCLK1,2,3,4

 

MWE

DIMM Slot

 

 

 

 

 

MCS1A,2A

CN3

 

 

MRASA

 

 

(64,128,256MB)

 

 

MCASA

 

 

 

 

 

BSEL0A,1A

 

 

 

CKEA

 

 

 

SDA,SCL

 

 

 

AR-M350U CIRCUIT DIAGRAM 9-4

 

Image 22
Contents Product composition AR-NC5JSystem Configurations StandardAR-M350U/M450U AR-RK1AR-DU4 AR-EF1AR-RK1 AR-DU3Basic Specification Base Engine AR-M350U/M350N/M450U/M450NOutput Equipment Specific FunctionDocument Feeding Equipment Printer FunctionExpanded RAM Scanner functionCopy function APS Copy FunctionAMS AR-SC1 Supply system tableEurope AR-SC2Production number identification Environmental conditionsInstalling procedure flowchart AR-M350U Unpacking and InstallationAR-P14 installing procedure =?702#%=?702#%-+0#0&+056#..#6+10HO Self print of set values Maintenance System TableAR-M350U Maintenance Scanner / DspfEngine section Peripheral devices ADU22-10 Block Diagrams MFP Control PWBfor AR-M350U/M450UJtag BGA G/A BGA CN3PCI-Bus Sdram IC22, IC27 24MBCN1 =?%+4%7+6&+#4#/HO!#!$ Circuit Diagram #!$VSS EL1 IC19A CKE #!$ IC19B VDD GND #!$ ASYSCMD3 Pclkd Pclkdr SYSCMD80 IC19C Pciclki #!$ #!$