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OF5750/5950 Series January 2001
A3 - 61
A3.8 G3A-PCB
This PCB board is optionally available. Using this board allows the system to be ready for
additional G3 line. This board is connected to the MCNT board through the OKI's original
MUPIS interface.
And this board is connected to the NCU board through the DM2 board.
The block diagram of this board is shown on the next page.
This board is connected to the MCNT board with an 80-pin connector (CN1). One pin of this
connector (RM2) is signal line dedicated to the G3A board, and fourteen pins of this connector
are signal lines shared with the option G4A board, and the remaining 64 pins are signal lines
shared with the optional G4A board and LAN network board. It is connected to the NCU board
through the DM2 board with 30-pin connector (CN2).
Data is transferred to/from the CPU on the MCNT board via the 2KB dual port RAM. When
data is sent, the MCNT board causes an interrupt to the G3A board using a CUREQ-N signal
and writes data into the 2KB dual port RAM.
The G3A board reads the data from the dual port RAM in the DRAM, and sends the data to the
NCU board via the DM2 board.
When data is received, the G3A board causes an interrupt to the MCNT board using an
OPREQ signal and writes data from DRAM into the dual port RAM. The MCNT board reads
data from the dual port RAM, expands the data in the DRAM on the MCNT board, and sends
the data to the LED head via the IOGA5.
Summary of Contents for OKIFAX 5950
Page 9: ...CHAPTER 1 GENERAL INFORMATION ...
Page 101: ...OF5750 5950 Series January 2001 1 92 1 6 21 NIC Information ...
Page 107: ...CHAPTER 2 INSTALLATION PROCEDURE ...
Page 264: ...CHAPTER 3 BRIEF TECHNICAL DESCRIPTION ...
Page 272: ...CHAPTER 4 MECHANICAL DISASSEMBLY AND REASSEMBLY ...
Page 277: ...OF5750 5950 Series January 2001 4 5 Appearance of the OKIFAX 5750 5950 ...
Page 302: ...CHAPTER 5 ADJUSTMENTS ...
Page 306: ...CHAPTER 6 CLEANING AND MAINTENANCE ...
Page 341: ...CHAPTER 7 TROUBLESHOOTING AND REPAIR FOR OKIFAX 5750 5950 ...
Page 400: ...Appendix A PC Board Descriptions and Operation ...
Page 491: ...Appendix B DescriptionsofPrintOperation ...
Page 513: ...Appendix C Not used at this time ...
Page 516: ...OF5750 5950 Series January 2001 D 1 Section 1 CABINET ASSEMBLY 27 28 29 ...
Page 518: ...OF5750 5950 Series January 2001 D 3 Section 2 CONTROL PANEL ASSEMBLY 11 ...
Page 520: ...OF5750 5950 Series January 2001 D 5 Section 3 PRINTER ASSEMBLY 53 54 31 10 55 52 34 56 ...
Page 523: ...OF5750 5950 Series January 2001 D 8 Section 4 BASE ASSEMBLY ...
Page 525: ...OF5750 5950 Series January 2001 D 10 Section 5 FRAME ASSEMBLY SCANNER L 31 30 33 32 ...
Page 527: ...OF5750 5950 Series January 2001 D 12 Section 6 FRAME ASSEMBLY SCANNER U ...
Page 529: ...OF5750 5950 Series January 2001 D 14 Section 7 CABLES OPTION BOARDS ...
Page 530: ...OF5750 5950 Series January 2001 D 15 28 29 Section 7 CABLES OPTION BOARDS ...
Page 532: ...Appendix E Not used at this time ...