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DFX-8500
Rev. B
2-1
8
Printhead
Drive Circuit 2/2
Printhead
Drive Circuit 1/2
Control &
Monitoring
+37 VDC,
+5 VDC
Printhead
Temperature
Paper Width
PG Encoder
PE Signals
(Front, Rear, Top)
Paper Jam
Pull Tractor
Tractor Select
Head Fan
Temperature
Current Monitoring
CR Motor
Insulation
PSB/PSE
Board
Option
Cutter
Panel Unit
Reset IC
(IC13)
IEEE1284 I/F
AB
DB
Control
G/A
E05B36
(IC1)
ENCA,
ENCB
CRCLM
PG Motor
Drive Circuit
CR Motor
Control & Drive
Circuit (IC1, IC3)
CRINS
PF Motor
Drive Circuit (IC2)
RF Motor
Drive Circuit
AB
DB
Control
Optional
Type-B I/F
Card
P-ROM
(IC5)
RAM
(IC14)
Level Converter
(IC9)
Serial I/F
EEPROM
(IC11)
24.57MHz
(CRU1)
HPSENS,
HNSENS
CPU
TMP95C061
(IC2)
Printhead 2/2
Printhead 1/2
Cover Open
Sensor`
DRV-B Board
DRV Board
RF Motor
PF Motor
Interlock SW.
CR Motor
CR Encoder
PG Motor
Plunger Drive
Circuit
Head Fan
Drive Circuit
Fan Drive
Circuit
Fan
Head Fan
Plunger
HD
PG
CR
PGENCA,
PGENCB
Ribbon Jam
PLG
HFTMP
PWIDTH
HTMP
RF
PF
TXD/RXD
DTR/CTS
POFF
CL,
PD,
DRERR
LED,
SW
RESET,
RSTOUT,
ERRCRPFX
PFA
FAN
MAIN Board
Mechanism
19.55MHz
(CRU2)
SUB Board
SWITCH
SWCNT
(DIP SWs)
PG Home
PDATA1-8,
/STB,
/ACK, BUSY
Figure 2-15. Control Circuit Block Diagram