Printronix P9212 - Page 40

2–14
Principles of Operation
MPU
Shuttle & Ribbon
Control
POWER SUPPLY
BOARD
LMI &
PROCESSOR
MECHANISM
DRIVER
BOARD
+5 Vdc
AC
POWER
PRINTER
INTERFACE
FILTER
EMI
Fault
Hammer
Driver Data
Hammer
T
iming Data
Paper
Control
DPU
RTPU
SHARED
MEMORY
ON / OFF
Switch
AUTO–RANGING
CABINET
FAN
CARD CAGE
FAN
BLOWER
ASSEMBLY
Fan Control
HOST
Shuttle
Timing
PAPER
MOTION
PAPER
OUT
PLATEN
OPEN
Sensors
FAULT CIRCUITS
PAPER TRANSPORT
SHUTTLE DRIVE
RIBBON DRIVE
P/S CIRCUITS
DRIVE
HAMMER
BANK
Circuit Brkr
CONTROL P ANEL
HD CIRCUITS
POWER
SUPPLY
FAN
COMPUTER
RIBBON
TRANSPORT
PAPER
TRANSPORT
Paper Feed
Motor Control
Platen Open
Motor Control
Ribbon Status
Ribbon Control
HAMMER
DRIVER
BOARD
+12.5Vdc
+48 Vdc
SHUTTLE
ASSEMBLY
+48 Vdc
+12.5Vdc
Control
Hmrs
1–40
Hmrs
41–88
+48 Vdc
Crowbar
HD 1–40
12V / 48V FILTER
BLR DRIVE
Hmrs
1–88
BLR
Control
PRINT
MECHANISMS
Shuttle Drive
BACKPLANE
FEATURE
Data
BOARDS
FLOPPY DISKETTE
DISK
CONTROLLER
Key
+5Vdc
Message
Indicator
Data
Status
+5 Vdc
OS & Fonts
Operating System & Fonts
DRIVE ASSEMBLY
Status
Data
+5 Vdc
+5 Vdc
Fault
Figure 2–10. Functional Elements of the Printer with LMI