Gtech Accutherm, Service Manual, Page: 100 / 132

B-ii GTECH Technical Training and Support Services
Figure B-1. Printer Block Diagram
Top Cover
Paper Feed
Motor
Du al S tep Mo tor
Driver
Al legro A 3988
(1000ma)
Step Motor Driver
Alleg ro A3 983
(400ma)
Knife Motor
Stack er Motor
MCF5353
Processo r
(BGA )
RA M
4Mb x 1 6
(BGA )
FLA SH
2Mb x 16
(BGA)
FPGA
(BGA )
Print
He ad
P ower Supply
a nd So ft S tart
Address/Data Bus
+
Clock
Oscillator
Cover
EEPROM
RS2 32
Driver
+24 VDC
from
internal
power
brick
+3.3V
+1.5V
P aper
Cut
Home
TOF JAM
On board
se nsors
(In terruptive)
Off board sensors
(reflective )
TOF Current
A djust
F
P
G
A
I
/
O
+
Pr int He ad
Buffer
Pr int He ad
Vo ltage Contro l
LED
Te st
Switch
Feed
Switch
O n Bo ard
Operator
Inte rface
LED LED
USB
Protectio n
Beepe r
USB
Clock
Debug Header
Program Header
No t
Pop ulat ed
+1.5V