Gtech Accutherm - Printer Block Diagram

B-ii GTECH Technical Training and Support Services
Figure B-1. Printer Block Diagram
Top Cover
Paper Feed
Motor
Dual Step Motor
Driver
Allegro A3988
(1000ma)
Step Motor Driver
Allegro A3983
(400ma)
Knife Motor
Stacker Motor
MCF5353
Processor
(BGA)
RAM
4Mb x 16
(BGA)
FLASH
2Mb x 16
(BGA)
FPGA
(BGA)
Print
Head
Power Supply
and Soft Start
Address/Data Bus
+
Clock
Oscillator
Cover
EEPROM
RS232
Driver
+24 VDC
from
internal
power
brick
+3.3V
+1.5V
Paper
Cut
Home
TOF JAM
On board
sensors
(Interruptive)
Off board sensors
(reflective)
TOF Current
Adjust
F
P
G
A
I
/
O
+
Print Head
Buffer
Print Head
Voltage Control
LED
Te st
Switch
Feed
Switch
On Board
Operator
Interface
LED LED
USB
Protection
Beeper
USB
Clock
Debug Header
Program Header
Not
Populated
+1.5V