Service manual

2DA/2DB-1
2-3-8
Figure 2-3-5 Engine PCB block diagram
2-3-3 Engine PCB
HVTPCB
CFM1,2,3
PSPCB
EPCB
CL
MHVDR
THVDR
SHVDR
SHVISEL
FAN1DRN
FAN2DRN
FAN3DRN
RMLOW
RMCLK
RMENB
LOPSDO
LOPSDI
LOPSCLK
PLGCLK
PLGDRN
PLGRDYN
EGSO
SCKN
EGSI
PDMASKN
OVSYNK
OPSWN
ORGLSWN
DOPSI,DOPSO
DOPSCLK
OUTPEN
PLGCLK
HPSWN
ORGTIM
LAMPN
DOPSEL,DOPRDY
SBSY
SDIR
EGIRN
RSTN
SCAN0-7
BUZERDRN
LED0-4
KEY0-9
LCDUD0-3
LCDCP
LCDFLM
LCDENB
LCDLP
LCDVO
ISMDA
ISMDNB
ISMDNA
ISMDB
OUTPEN
VDOP
VDON
PDN
SAMPLEN
LOPSEL0
LOPSEL1
LOPSEL2
LOPSRDY
HVCLK
(DB)
MHVIADJ
THVIADJ
ERASER1N
ERASER2N
THERMA
ISU
Finisher/
Job
separator
Duplex
unit
Fixing
unit
RM
Paper feeder
LSU
CPU
ASIC
MPCB
Scanner unit
DP
INPCB
CCDPCB
TONEEPY
TONEFUL
UOPSEL
UOPRDY
UOPSDO
UOPSDI
SCLK
SLSOLN
RLSOLN
ICLTN
IPPSWN
SLEPN
ZCROSSC
MHEATN
SHEATN
24V4
24V1
5V
24V4
5V424V4
24V4
C1PLSW1N
C1PLSW2N
C1PLSW3N
C1PWSWN
C1PDSW
PLSW
PWSW
5V2 5V
BPWSW
BPPESW
BYPPWSW
5V2
REGSWN
EXTSWN
SEPSWN
RSW
ESW
FSSW
5V2
REM
RDY
CLK
DM
5V
FCLTN
BSOLN
PFCL
BYPPFCL
24V1
24V4
5V2
5V
5V
12V
5V2
5V2
24V1
24V1
24V1
5V
3.3V
2.5V
1.8V
+12V
-12V
5V3
24V1
24V4
24V4
5V
ISU
TEMP
HUMIDC
HMCLK1
HMCLK2
5V2
PRNPCB
OPPCB
LCDPCB
3.3V
2.5V
1.8V
5V