Oki C7500 Series Disassembly For Maintenance - page 15
CU Assy confirmation subject.
[CU main board]
There are two kinds of CU main boards of C7550/C7350,C7500V2/C7300V2,C7500/C7300.
TIG-3
Combination
OK/NG
Main Board ogram D
EEPROM
HME
OLD Version
OK
TIG-3
Ver.x1. 93C86
NEW Version
OK
HME
Ver.x3. 24C32
cannot be used with the board of
TIG-3
Ver.x1. 24C32(NG)
TIG-3
Ver.x3. 93C86
HME
Ver.x1. 24C32
HME
Ver.x3. 93C86(NG)
How to recognize
1:Serial No.
2:Menu Map printting(CU F/W Ver.)
x1.xx or x2.xx
x3.xx or x4.xx
3:Board appearance
There is printting of "NBC-2" on the board.
The position of HDD and Centoro.(See page 150)
[Program ROM DIMM]
There are two kinds of program ROM DIMM.
CRF:Flash ROM DIMM
TNY:P2ROM DIMM
Flash ROM is rewritable.
P2ROM is not rewritable.(Parts number are also changed whenever the versions change.)
[NIC Card]
There are three kinds of NIC Cards.
Oki LAN 6200e+
ODA
Oki LAN 7300e
ODA/OEL/APS
Oki LAN 8100e
ODA/OEL/APS
Note To use Oki LAN 8100e, software for the NIC must be downloaded to a CU main board.
Software for the NIC is downloaded to a CU main board (HME) before shipment of
a printer or a service board.
As software is deleted when forced initialization is performed to a Flash ROM, redownloading
of the software is required. Software is not downloaded to a TIG-3 also a program
ROM DIMM doesnユt support the software. Accordingly, the Soft NIC (Oki LAN 8100e) is
not usable even if software for the NIC is downloaded to a TIG-3 board.
OLD Version:
NEW Version:
ROM DIMM and EEPROM of each board
NG
Combination
OLD Version:
NEW Version:
NG
Blank
LCD
another side.
OLD Version:
NEW Version:
2 1 2 A
1 0 0 4 7 0 2
N31033C -D
Made in Thailand
OLD Version
xxxA xxxxxxx
NEW Version
xxxB xxxxxxx or
SAP system serial No.
5
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