Service manual

System Diagram
Service Manual
5-1
5. System Diagram
5.1 Block Diagram
MAIN PBA
Dell 2355dn Block Diagram
CHORUS3
DDR2 SDRAM
(SODIMM/BASE)
256MB
DDR2 SDRAM
(SODIMM/Option)
256MB
USB 2.0
(ISP1761)
SCAN MOTOR DRIVER
(A3983)
RESET IC
(XC61FN3112MR)
Flash ROM
(S29GL256P90)
32MB
Flash ROM
(for backup)
(S29GL008)
1MB
RTC battery
(CR2032)
RTC Clock
(32.768MHz)
MAIN CLOCK
(CY25811)
PHY chip
(BCM5241)
DC-DC
(MVPG31)
5V˧1.0V
DC-DC
(MVPG31)
5V˧3.3V
DC-DC
(ISL88550AIRZ)
5V˧1.8V/0.9V
EEPROM
(M24512)
EEPROM
(M24256)
USB host
LSU
HYPER
SPEAKER
5VS SW
INNER TEMP
USB2.0 Device
USB2.0 Host
5P
CRUM
(S-V1.1)
BLDC
THERM
MP_EMPTY PICKUP_CLT
REGI_CLT
MP_CLT
10P 2P 4P
4P
SCAN MOTOR
CCD HOME
FLAT COVER OPEN
3P
3P
CCD
NIC
4P 2P 4P
18P
3P
OPE I/F
HVPS
FEED_SENSOR
REGI_SENSOR
EXIT_SENSOR
24VS
24V
COVER OPEN SW_1 / 2
MHV
OPC
SUPPLY
DEV THV
FUSER FUSER
GND
DUPLEX0_SENSOR
DUPLEX1_SENSOR
SCF (Option)
MODEM
(Silab Smart DAA)
WNIC (Option)
12P 40P 8P (DIN 8P)
22P
P_EMPTY
3P
DADF
DADF
MOTOR
DRIVER
(A3983)
PICKUP_SOL
P_DET
REGI_SOL
EXIT_SOL
COVER OPEN
P_POS
P_REGI
DADF MOTOR
6P
3P
3P 2P
4P
7P
OPE MAIN
4.3 Inch LCD
MICOM
(S3C2416)
18P
8P
DRIVER
DUPLEX MOTOR DRIVER
(A3983)
EXIT MOTOR DRIVER
(A3983)
DUPLEX MOTOR
4P
EXIT MOTOR
MAIN_FAN
DUPLEX_FAN
3P
6P
28P
SMPS
INLET
FUSER
CONTROL
AC 110 /
220V
16P
11P/12P
24P
SCAN TEMP
REAR COVER OPEN
5P
4P
8P
Flash ROM
(AT26DF321)
(for FAX)
4MB
USB HUB
(USB2415)
CCD FAN
3P
AFE Chip
(HT82V38)