Printronix P7000 Series Maintenance Manual page 385

Control Bus
Data Bus
SDRAM
FLASH
Buffer
RTC
Non-Vol
Port
Control
Logic
DC
RS-232
Diagnostic
Diagnostic
Port
Port
Control
Control
Panel
Panel
Interface
Engine Controller
(EC)
EC
64K x 16
FLASH
Memory
TTL EC
Diagnostic Diagnostic
Port Port
Figure 67. Controller Board Block Diagram
Buffer
V8 ASIC
MECA ASIC
20 MHz
Siemens 80C167
Microcontroller
(EC)
JTAP
System
Reset
Motorola
MPC8245
PCI Bus
microprocessor
Core Volt
Regulator
PCI Bus
Host I/O
Drivers
Data Controller
(DC)
Fault
Monitoring
Circuitry
Analog Drive
Circuitry
The Ribbon Log
RS-232/422
IEEE-1284
(Parallel)
Fault
Sensors
Paper
Feed
Ink
Transport
Assembly
Shuttle
Platen
Hammer
Drive
385