MX-6240N, MX-7040N (serv.man33). Section 14 Electrical Section - Updated November 2012 - Sharp Copying Equipment Service Manual (repair manual). Page 9

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MX-7040N  ELECTRICAL SECTION  14 – 9
G. FAX section
(1) MX-FX11
TEL/L
IU
Conn
ecto
r
FA
X
IM
A
G
E
MEMORY
(Not
mou
nt)
FLASH
R
O
M
16Mb
it
LIU
EX
PWB
FA
X
M
A
IN
P
W
B
MJ1
(LINE)
MJ2
(TEL)
OFF
foc
k
detection
Sr
e
la
y
Si3
019
Si3056
Sili
con
DA
A
Si3
056
CH
IP
SE
T
CI
Dete
ction
P
olar
it
y
in
vers
ion
Dete
ction
(Not
m
ount)
Speaker
F
AX
ASIC
MB
87
F
4
9
3
0
MODEM
MMD
5020
PIC
microcomputer
PIC16F690
CPU
SH
7706
MFP
IF
Connector
With
secure
loc
king
de
vice
BM30B-
SHLDS
JTAG
Con
nector
1
4pin
(Not
mount)
Lo
g
Con
nector
(Not
mount)
Oper
ation
in
1W/7W
energy-sa
v
e
mode
Crystal
R
esonator
24.5
76MHz
Crystal
R
esonator
1
4.7456MHz
Spe
ak
e
r
Co
nn
e
c
to
r
S0
2
B
-
PA
S
K
STATUS
LED_
0
STATUS
LED_
1
(Not
moun
t)
v
oltage
le
v
el
Voltage
Re
gulator
NJU7772F
18
Po
wer
Amplifier
LM4819
V
olum
e
C
hange
BU
4
0
6
6
NJM3414
vo
lt
a
g
e
le
v
el
Filter
+2
4V
D
etec
tio
n
+24V
+12V
CI
Fi
ter
CI
Fi
te
r
Filter
v
oltage
le
v
el
RH
S-
+5
V2
ECON
MRON
EX
H
S-
SON2
SON1
AFE_
CL
K
AFE
_RES-
ASP
CL
K
ABITCL
K
AR
XD
AT
X
D
BSP
CL
K
BBITCL
K
BR
XD
BTXD
SPK
(a
na
lo
g)
RGDT-
(CI
detection)
HD
MUTE
-
SI3
_
RES-
TEL
ID
CI2-
CI-
HS
1-
HS
2-
CIO
N
15
0VO
N
MSGMUT
E
CID-
+5
V2
+1
2
+2
4
+5
VA
+5
V
A
BZ
EN
_
SPKO
N-
EN_
B
ZON-
VO
L
A
VO
L
B
VO
L
C
VO
L
D
SPM
U
TE-
3.
3V
1.
8V
MD
M3.3
V
RESE
T-
3.
3
V
+5
V
+5
VA
MD
M3
.3
V
+3
.3V
+2
4V
MO
N_
24V
-
+2
4V
+5
V
+3
.3
V
+5
V2
RES_F
A
X
-
FA
X
_
R
X
D(
D
)+
FA
X
_
R
X
D
(D
)-
F
A
X
_
TXD(D)
+
FAX_T
X
D(
D)-
F
A
X
_
CTS
(D)-
FA
X
_
R
T
S
(D
)-
FAX_RXD(
CS)+
FA
X_
R
X
D
(CS)-
F
A
X_TXD(
CS)+
F
A
X
_
TXD(C
S
)-
F
A
X
_
CTS(C
S
)-
F
A
X
_
R
TS(
C
S
)-
FL
V
P
P
Ve
rs
io
n
ID
CNCT_FAX-
3.
3V
1.
9V
PI
CP
G
M
_
E
N
WU
P_
FA
X-
TEL
ID2
16bit
16bit
16bit
16bit
16bit
16bit
JTAG
UA
R
T
UA
R
T
Do
w
n
lo
a
d
Spred
Spectr
um
CY25811SXCT
PR
O
G
RAM
FLASH
R
O
M
16
M
b
VHIM29LV1
6
B-1Q
WO
RK
MEMORY
SDRAM
64Mb
it
A3
64S40ETP-
G6
RESET
IC
BD4
5285G
Voltage
Re
gula
tor
R11
73S001B

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