Main Pwb - Kyocera Mita FS-6020 Service Manual

2-3-3 Main PWB

YC17
FPRSTN
FPCLK
Operation
FPDIR
panel PWB
FPDAT
YC10
OUTPEN
APC PWB
VDFONSPL,VDATAP,VDATAN
YC11
PD PWB
YC7
EGSI,SCKN
EGSO,PDMASKN,SBSY,SDIR,EGIRN
ERDEADN2,ERDEADN1
Engine/high
ERASER
voltage PWB
POLRDYN
POLONN
YC8
Polygon motor
POLONN
YC9
Eraser
YC12 RESETN
MIDDRN
Engine/high
FEDDRN
voltage PWB
MPFSOL
REGDRN
YC13
Registration clutch
YC14
MP tray feed solenoid
YC15
MP tray feed clutch
YC16
Middle feed clutch
X2
X' tal(System)
25.00000 MHz
X3
X' tal(Video)
28.0845MHz
X' tal(USB)
48.00000MHz
Parallel interface
YC5
PNSELIN
PNSTROBE,PNAUTOFD,
PNINIT
PNACK,PBUSY,PPERROR,
PSELECT,PFAULT
PPDATA7-0
Serial interface
DTR,RTS,TXD
YC6
CTS,DSR,RXD
RSSEL
Debugger
YC18 DBTXD
DBRXD,DBCLK
5 V regulator
+24V2 +5V2
U14
The main PWB consists mainly of CPU (U1) and primarily performs the printing data processing and interface controls with
computers. The CPU (U1) outputs the laser light and executes printing following the code ROM (YS1) that stores the control
programs being linked with the process and paper conveying mechanism that the engine/high voltage PWB controls.
U13
CXIN
CXOUT
U1
PowerPC 200 MHz
VXIN
RISC processor
VXOUT
(Core ASIC)
X1
U2
48MHZIN
PDATA7-0
NSELIN
U12
P1284DIR
3.3 V regulator
+5V1 +3.3V1
U15
Figure 2-3-9 Main PWB block diagram
Digital transistor
Q1
USBINIT
USBDP
USBDN
Digital transistor
EBIU address bus EBA22,EBA10-1
EBOEN1,EBWEN1
CDET11,CDET12,CDRST1
EBCSN1
EBA21-20
U8
EBA22,EBA10-1
CDET21,CDRST2
U16
74AHC08
CDWAITN1
CDWAITN
CDWAITN2
EBA22
EBCSN0,EBC SN1,
EBOEN0,EBWEN0
EBCSN0,EBOEN2
EBA21-1
EBCSN1,EBOEN2
OPRSTN
OPRDY, DMAACKN,IORN,
IOWN, EBCSN4
DMAREQ,OPACKN, OPIRN
EBA15-1
DQMLM,DQMLL
DQMUU,DQMUM
RASN,CASN,WEN,BA1,BA0,SDCLKE
IICSCL
IICSDA
SDRAM address bus
SDA12-0
U10
SDRAM
SDCSN0
U11
SDRAM
SDA12-0
SDCSN1-2
SDRAM data bus
SDD31-0
YC4
USB interface
VBUS
Q2
YC2
CDD15-8
CDD7-0
CDCSN1
CDCSN2
YC3
CDCSN1
CDCSN2
YS1
DIMM
(Code ROM)
U3
Font
mask ROM
EBA21-1
YC1
KUIO-LV(3.3V)
EBD31-16
EBD31-0
SDA12-0
SDD15-0
SDA12-0
SDD31-0
SDCLK
SDD31-16
SDCLK
FS-6020
EBIU data bus
EDB31-24
U6
EDB23-16
U7
EDB31-16
EBD31-0
EBD31-16
U4
EBD31-16
API
ROM socket
U9
EEPROM
YS2
Expansion
memory
slot
(DIMM)
2-3-11