Circuit Description - Dell 1600n - Multifunction Laser Printer B/W Service Manual

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11. Circuit Description

11.1 System Configurations
SCX-4920N
is roughly made up Main Control part, Operation Panel part, Scanner part, Line Interface part and
Power part. Each Part is separated Module which focus on common and standard design of different
kind products. main control part adopting Fax & LBP Printer exclusive Controller is composed of 2
CPU and 1 Board. Scanner part is composed of ADF and Platen and is connected with Main by
Harness . Line Interface part is designed to apply TBR21 standard(Domestic, Europe,etc..)
NETWORK
USB 2.0
IEEE1284
MAIN MO TOR
ADF UNIT
P-REGI, P-DET, P-POS
SENSOR
ADF MOTOR DRIVER
TEA3718 X 2EA
LCD, 16*2 LINES
14P
OPE
MICOM
LCD/LED Drive
Key Scan
3P
FLAT COVER S ENSOR
600 DPI, COLOR CCD
FLATEN MOTOR
MAIN
Reset
SPGPm
ARM946ES
CACHE(16K*2)
SDRAM Control
MAIN MOTOR
ROM Control
DRIVER
DMA Control
A3977SLR
PVC
GEU/HCT/gCOD
EC
I/O I/F
Engine Control
IEEE1284/USB2.0
FAST SRAM
(128 KByte) CIP4
Image Processer
AFE I/F
I/O PORT
CIP 4 AFE
Motor Control
CCD DRIV ING
DMA Control
PART
RTC
FLATEN
JBIG Codec
MOTOR
DRIVER
TEA3718 X 2EA
BootROM (1MBX2ea or 2MBX2ea)
26P
SRAM(1 28KByte) or Not Used
SDRAM(16MB o r 32MB)
DRAM Backup logic
PCL6(2MB x 2ea)
PS3(2MB x 2ea) : DELL
PS3 / PCL6 DIMM(SEC)
2P
MEMORY DIMM
THERM
MODEM
SFM336
AU DIO Drv .
33.6KBP
3P
Smart DAA
CX20493
NETWORK INTERFACE CARD
4P
3P
4P
11P
4P
3P
2P
2P
Circuit Diagram
AC 110V/220V
SMPS
PAPER EMPTY
MHV
SENSOR
SUPPLY
INLET &
EXIT SENSOR
POWER S/W DEV
MP EMPTY
THV
+5V/
SENSOR
+12V
OPC GND
+24V
FEED SENSOR
+24VS
HVPS
COVER S/W
AC PWR
2P 2P
FUSER FAN
2P
LINE
EXT. PHONE
SCF(Option)
CARIDGE INFO.
.
TONER TX
TONER RX
LSU
MP CLUTC H
MAIN CLUTCH
PTL
DEV_FUSE
Service Manual
11-1