MX-FXX1 ELECTRICAL SECTION 8 – 1
MXFXX1
Service Manual
[8] ELECTRICAL SECTION
1. Block diagram
TE/LIU
connector
FAX
IMAGE
MEMORY
Not
install
FLASH
ROM
16Mbit
LIU
EX
PWB
WORK
MEMORY
SDRAM
64Mbit
x
2
PROGRAM
FLASH
ROM
8Mb
x
2
FAX
MAIN
PWB
FLASH
ROM
PWB
MJ1
(LINE)
MJ2
(TEL)
Externally
connected
hook
detection
circuit
S
relay
Si3015
Si3021
Silicon
DAA
Si3044
CHIP
SET
AFE_CLK
AFE_RES-
AFE_ASPCLK
AFE_ABITCLK
AFE_ARXD
AFE_ATXD
SPK(Analog)
CI-
HS1-
HS2-
Speaker
Speaker
circuit
Input
s
elect
Sound
volume
Detection
BZ
EN_SPKON-
EN_BZON-
VOLA
VOLB
VOLC
SPMUTE-
NEW
A
SIC
MODEM
(MN195006E)
EXHKD-
SON1
SON2
PIC
Microcomputer
(PIC16F627A)
CID-
RGDT-
(CI
detection)
CPU
SH7706
UART
Download
MFP
IF
connector
FAX_TXD(D)+
FAX_TXD(D)-
FAX_RXD(D)+
FAX_RXD(D)-
FAX_CTS(D)-
FAX_RTS(D)-
RES_MFP-
FFVPP
MSW_MON-
WUP_FAX-
PLED
RES_FAX-
CNCT_FAX-
+12V
+5V
+3.3V
+5V2
16bit
32bit
32bit
16bit
16bit
32bit
+5V2
+5V2
E2PROM
(CAT24W02)
I2C
JTAG
Debug
connector
JTAG
UART
Debug
connector
Operation
in
1W,7W
Energy
saving
mode
FAX_TXD(CS)+
FAX_TXD(CS)-
FAX_RXD(CS)+
FAX_RXD(CS)-
FAX_CTS(CS)-
FAX_RTS(CS)-
VOLD
Spred
Spectrum
X'TAL
24.576MHz
Voltage
Regulator
1.9V
X'TAL
14.7456MHz
RESET
IC
(PST591IMT)
RESET-
+3.3V
EYE
p
attern
connector
2bit
Speaker
connect
or
POWER
L
ED
STATUS
LED
TELID
voltage
level
Polarity
reversal
detection
Polarity
reversal
circuit
U.S.A.
o
nly
Besides
U.S.A.
CI
Detection
circuit
Summary of Contents for MX-FXX1
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