Brother MFC-9420CN Service Manual page 393

PGND
PGND
PGND
+24V-1D
+24V-1D
+24V-1D
BRVON-N
CLVP-N
PWMON-N
W BRVPWM-N
BRVERR
CBVPWM-N
THVRON-N
DBV(MC)PWN-N
THVPWN-N
DBV(KY)PWM-N
THV-1
FCBVPWM-N
BRVERR2
PGND
HVUCNCHK-N
+3.3V
+24V-1
SCMON-N
PGND
SCMCLK
SCMRDY-N
SGND
SGND
VCC
BDT-N
LDREF0
BDT-P
LDREF1
SGND
LDREF2
VIDEO-P
LDREF3
VIDEO-N
LDREF4
SGND
LCOTN2
Engine
LREADY
LCONT1
+5V-R
Controller
Board
SGND
SGND
OHPSENU
+5V-S
PEU-P
SGND
+5V-S
SGND
Vo1:YMC
PT1-N
Vo2:K
+5V-S
SGND
SGND
LED
TBEN-N
VCC
+5V-S
SGND
+5V-S
TONEROK-N
CTFANON-P
W
PGND
CTFANERR
SGND
TH3
PSU4
SGND
PSU3
NU
PSU2
SGND
PSU1
+5V-S
VCC
PBSEN-N
+24V-F2
DSL(C)ON-N
+24V-F2
DSL(M)ON-N
+24V-F2
DSL(Y)ON-N
+24V-F2
DSL(K)ON-N
NC
HTFANPWM
HTFANERR
PGND
HTFANON-P
SGND
FBOPEN-N
VCC
SGND
PEFULL-N
VCC
SGND
PT2-N
+5V-S
MMRDY-N
MMON-N
MMCLK
+24V-1D
PGND
+24V-1D
PGND
PGND
SGND
VCC
MMENC
MMREV-N
MMGAIN
DMGAIN
VCC
SGND
PGND
PGND
+24V-1D
PGND
+24V-1D
DMCLK
DMON-N
DMRDY-N
DCL(K)ON-N
+24V-1DF3
DCL(Y)ON-N
+24V-1DF3
DCL(M)ON-N
+24V-1DF3
DCL(C)ON-N
+24V-1DF3
SGND
W
WTLEDON
SGND
TBFULL-N
PKCLU1ON-N
+24V-1DF3
RECLON-N
+24V-1DF3
TRSLON-N
+24V-1DF3
FUCLON-N
+24V-1DF3
FBCLON-N
+24V-1DF3
VCC
LFCN-CHK-N
+5V-S
SGND
OCST1-N
PEL1-P
PSCST1
PSL3
PSL2
PSL1
NC(FDCLL1ON-N)
PKCLL1ON-N
+24V-F2
LFCN-RET
+24V-1DF3
ELON-N
SGND
OTP_FAN_ERR
TLESCN-N
PGND
TLES(C)-P
OPT_FAN_ON_P
TLES(M)-P
SGND
TLES(Y)-P
TLESCHK
TLES(K)-P
LEDON-P
SGND
VCC
SGND
VCC
PGND
+24V-1D
PGND
+24V-1D
PGND
+24V-1D
PGND
+24V-1D
PGND
+24V-1D
PGND
+24V-1D
SGND(MTCL)
VCC
SGND(MTCL)
VCC
SGND(CNT)
+3.3V-2
SGND(CNT)
+3.3V-2
SGND(CNT)
+3.3+-2
SGND(CNT)
+5V-2
SGND(CNT)
+5V-2
SGND(CNT)
+5V-2
CN-CHK
SGND
+24V
PGND
+24V
PGND
SWRUS-P
ACSYNC-N
HORN-N
ACOFF-P
DCOFF1-P
BRON-N
+5V-1R
+5VD0-N
TH1
TH1
TH2
TH2
FUTEMP
SGND
Video
Controller
PCB
JPN
EUR/
ASIA/
OCE
US/
CAN
+5V-1
SGND
+5V-1
SGND
DC
+24V-1D
PGND
+24V-1D Power
PGND
+24V-1D
Supply
PGND
+24V-1D
PGND
Unit
+24V-1D
PGND
+24V-1D
PGND
+24V-1D
PGND
+5V-1(MTCL)
SGND(MTCL)
+5V-1(MTCL)
SGND(MTCL)
+3.3V-2(CNT)
SGND(CNT)
+3.3V-2(CNT)
SGND(CNT)
+3.3V-2(CNT)
SGND(CNT)
+5V-2
SGND(CNT)
+5V-2
SGND(CNT)
+5V-2
SGND(CNT)
DSV-1
SGND
DSV-0
SGND
CN-CHK
SGND
+24V
PGND
+24V
PGND AC IN-N
SWRUS-P
AC IN-L
ACSYNC-N
HRON-N
ACOFF-P
DCOFF1-P
NC
+5V-1R
+5VD0-N
TEST12
TEST11
TEST02
TEST01
HP1
HNH
HNB
HP2
W
W
W
W
Confidential