Service manual

4-5 IP-421 PRINT CONTROLLER
Chapter 4 Appendices
● Connector
CN1: Expansion memory
CN3: PS-341 (option)
CN4: Printer relay board
CN5: Printer relay board
CN7: PCI relay board
CN8: PCI relay board
CN9: Parallel port connector
● Switch
SW1: Resets system. (only for development purpose) No need to operate the switch.
SW2: Switch boot system. (only for development purpose) No need to use the switch.
● Jumpers
No need to use the jumpers.
JP2: Not installed (no function)
JP3: For production purpose
● Individual ICs’ functions
CPU: Central processing unit
BootROM: System booting-up parameter
KPC01: Image rotation through 90 degrees/error diffusion processing
PPBC: Bridge from each PCIset to the PCI bus
PCIset: Bridge from different points to PPBC
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