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Service Manual
System Diagram
9-1
6. System Diagram
6.1 Block Diagram
USB 1.1
IEEE1284
LD CTL.
AUDIO PART MODEM AFE
S3C46Q0X
ARM9TDMI
GEU
P1284
US B 1.1
ITU
I/O I/F
DMAC
PVC
UA RT*2
ME MORY I /F
CACHE(4K)
Image Processor
BACKUP
FLASH
MEMORY
(
(Batt.)
2MB)
SDRAM
MAIN
MOTOR
DRIVER
(A3978SLP)
FAN
2P
26P
MHV
SUPPLY
DEV
THV
COVER S/ W
+24VS
+5V/
-5V/
+24V
IN
HR(Zener)
LET &
POWER S/W
EXIT
SENSOR
MP EMP.
SENSOR
FEED
SENSOR
P_EMP.
SENSOR
OPC GND
THERM.
FUSER
AC PWR
2P
2P
LSU
C
SCAN
MOTOR
IS
200dpi,Mono
18P
TRANSFORIVER
LINE
INTERFACE
MODEM &
EXT. PHONE
SEPERATING
PART
EXT. PHONE
INTERFACE
PART
LINE
Ext. PHONE
600 : 600
TX : RX
MAIN MOT.
MAIN SOL.
MP SOL.
PTL
11P
4P
3P
2P
2P
DEV . FUSE
2P
HOOK S/W
Handset
MODULAR
JACK.
CIS SIG.
AFE
SCAN
MOTOR
DRIVER
(STA471)
2P
8P
6P
6
5P 14P
P
LCD(16x2)
HT48C50
LCD/LED DEIVER
KEY SCAN
SENSOR DRIVER
OPE
HOOK
LIU
HVPS
SMPS
MAIN
14P
P_DET.
SENSOR
P_SCAN.
SENSOR
6P
6P
AC 110V/220V
(8MB)
MODEM
(33.6kbps)
OPTION. 16MB
RESET