Read Sharp AR-P350 / AR-P450 (serv.man6) Service Manual online
AR-350/450 DATA FLOW 7-7
4. Flash Memory Capacity
This model incorporates the following Flash ROMs.
A. Drive voltage
The Flash ROMs in this model are driven by 3.3V.
Since those in the conventional models, such as the AR-280 series, are driven by 5V, there is no compatibility.
5. Purpose of use of expansion memory
When an expansion memory is added to this machine, the following items are improved.
• Reduction in timeout error
• Reduction in spool time
• Avoidance of memory full
For expansion RAM, use a commercially available one of the following specifications.
If a RAM of different specifications is installed, it is not recognized or its capacity is not correctly recognized.
<Expansion RAM specifications>
<Printer control PWB> Standard memory: 32MB
<MFP control PWB> Standard memory: 64MB
The page memory stores the sheet of the following capacity. (Reference value: A4 5% reference document)
The AR-HD3 is a hard disk drive of 5GB capacity.
Since, however, this machine requires a work area for controlling the page data in the HDD, 2GB area is used for that purpose.
PWB name
ROM name
Capacity
CN number
File name (Reference example)
Printer control PWB
Boot
32Mbit x 2
CN3
Ve606'_main.sfu
Main
MFP control PWB
Boot
32Mbit x 2
CN3
Vm201A_boot.sfu
Main
32Mbit x 2
CN4
Vm606'_main.sfu
PCU PWB
PCU
8Mbit x 1
Socket 1
P030400.sfu
Scanner control PWB
Scanner
8Mbit x 1
Socket 1
S040000.sfu
MDMC PWB (FAX PWB) FAX
16Mbit x 1
CN106
Mdmc201.sfu
DIMM TYPE
168pin 3.3V Unbufferd SDRAM DIMM Non-ECC
DIMM capacity
64MByte, 128MByte, 256Mbyte
CAS
CL=2
SDRAM
For PC100, PC133
Parity
Not support
ECC
Not support
HDD not installed
HDD installed
Expansion
memory
Total memory
Printer memory
Other
Page memory
Printer memory
Other
Page memory
None
32MB
12MB
10MB
10MB
14MB
18MB
2GB
64MB
96MB
48MB
10MB
38MB
50MB
18MB
2GB
128MB
160MB
80MB
10MB
70MB
110MB
18MB
2GB
256MB
288MB
128MB
10MB
150MB
270MB
18MB
2GB
HDD not installed
HDD installed
Expansion
memory
Total memory
Printer memory
Other
Page memory
Printer memory
Other
Page memory
None
64MB
12MB
20MB
32MB
18MB
46MB
2GB
64MB
128MB
48MB
20MB
60MB
82MB
46MB
2GB
128MB
192MB
80MB
20MB
92MB
146MB
46MB
2GB
256MB
320MB
128MB
20MB
172MB
274MB
46MB
2GB
32MB
About 140 sheets
2GB
About 10000 sheets
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