Panasonic KX-MB283RU / KX-MB783RU Service Manual ▷ View online
13
KX-MB283RU/KX-MB783RU
6 Technical Descriptions
6.1.
CONNECTION DIAGRAM
14
KX-MB283RU/KX-MB783RU
6.2.
GENERAL BLOCK DIAGRAM
MAIN UNIT
SOC (IC300)
This custom IC is used for general MFP operations.
ROM (IC402)
This 8MB FLASH ROM contains all of the program instructions on the unit operations.
And support the backup of user setting and FAX receive data.
And support the backup of user setting and FAX receive data.
SYNCHRONOUS DYNAMIC RAM (IC400)
This 256Mbit SDRAM is used for CPU work and receiving memory and page memory.
POWER SUPPLY
DC-DC converters generate 3.3V and 1.2V for system power.
Regurator generates 5V for peripheral devices.
Regurator generates 5V for peripheral devices.
TEL/FAX I/F (KX-MB783RU ONLY)
Composed of ITS circuit and NCU circuit.
3 ICs called SDAA(Silicon Direct Access Arrangement) control Telephone line, Speaker, and Handset.
3 ICs called SDAA(Silicon Direct Access Arrangement) control Telephone line, Speaker, and Handset.
READ SECTION
CIS Unit to read transmitted documents.
CIS Unit is connected to FLATBED transit Unit.
Scan data is converted by AFE(IC503).
CIS Unit is connected to FLATBED transit Unit.
Scan data is converted by AFE(IC503).
MOTOR
This model has 1 DC motor and 2 stepping motors.
IC300 drives the DC motor for printing.
IC502 and IC700 drive the stepping motor for Auto Document Feeder motor and CIS carriage.
IC300 drives the DC motor for printing.
IC502 and IC700 drive the stepping motor for Auto Document Feeder motor and CIS carriage.
LSU
Forms the images on the OPC DRUM by rotating polygon motor and reflecting the laser beam against polygon.
SENSORS
Composed of 2 switches and 5 sensors.
POWER SUPPLY BOARD
Supplies +24V and +7V to the Main unit and controls the Heat Lamp.
HIGH VOLTAGE POWER SUPPLY BOARD
Supplies bias need for the printing operation: bias of the DRUM, Developing and Transcription.
FIXING UNIT
Composed heat lamp, thermistor and thermostats.
1)
CPU
ARM9 operating at 250MHz.
2)
SDRAM Controller
Controls SDRAM Memory.
3)
USB Controller with PHY
Apply to USB2.0 HS
4)
Scanner I/F
Controls the CIS and AFE, and process the scan images.
5)
LSU I/F
Controls the polygon motor and outputs the VIDEO signal to LSU.
6)
MOTOR I/F
Controls the DC motor and Stepping Motor.
7)
FAN I/F
Controls FAN MOTOR and detect the rotation of FAN MOTOR.
8)
OPERATION PANEL I/F
Serial interface with Operation Panel.
9)
SENSOR I/F
Detects the sensor signal.
10) I/O PORT
I/O Port Interface.
11)
A/D, D/A converter
Sends beep tones, etc.
Convert the analog signal to the digital signal.
Convert the analog signal to the digital signal.
12) RTC
Real time clock.
13) MODEM
Performs the modulation and the demodulation for FAX communication.
14) Analog Front End I/F
Controls the DAA device for TEL/FAX function.
15) LAN Controller
Ethernet Control.
15
KX-MB283RU/KX-MB783RU
Main B
o
ard
D
A
A
bloc
k
(T
NV)
SoC
(siriu
s
Lite)
Po
ly
go
n mo
to
r
(LSU)
USB
FL
A
S
H
(32/64M
bit
)
SDRAM
(256M
bit
)
TEL
EXT
TEL
S
peake
r
Operatio
n Pa
nel Bo
ard
Op
e
G/
A
AF
E
2L
in
e
LCD
Motor
Dri
v
e
r
(FB)
Fl
at B
ed
Fl
at B
ed
Th
erm
istor
(Room)
Motor
Dri
v
e
r
(A
D
F
)
Hand Set
Hook SW
LA
N
Ph
y
Va
ris
tor
Carr
ia
ge
m
o
to
r
Color C
IS
FB Tra
ns
it
CN
70
1
CN
70
0
CN
50
9
CN
75
0
CN
30
0
CN
10
0
CN
10
1
CN
20
0
CN
51
0
CN
50
0
CN
50
1
CN
50
2
CN
50
4
CN
50
5
CN
51
1
CN
50
8
CN
50
7
CN
51
4
CN
50
6
CN
58
CN
57
CN
56
CN
61
CN
62
CN
60
CN
59
CN
2
CN
1
DC motor
Re
si
st
So
le
no
id
Pick
-u
p So
le
no
id
HVU
F
A
N
moto
r (l
eft)
Hol
e
IC
P
ick U
p
Se
ns
o
r
T
o
ne
r Se
ns
or
CN
64
CN
67
CN
66
CN
65
CN
51
CN
63
CN
53
CN
52
CN
50
F
A
N
moto
r
(ri
gh
t)
Th
ermostat
Heater lamp
SWPS
CN
10
1
A
C
i
n
le
t
Th
erm
istor
(He
ater)
Th
erm
o
stat
AC
c
o
rd
se
t
DC-DC
CONVERTER
ADF motor
IC400
IC402
IC300
IC100, IC101
IC50
IC503
IC502
IC700
IC1
(KX-MB783
ONLY)
n
RP S
e
s
or
Docu
m
e
nt
S
e
n
s
or
tr
o
r
R
e
gis
e
Se
ns
e
PTOP
S
nsor
IT S
e
ns
or
EX
16
KX-MB283RU/KX-MB783RU
6.3.
MAIN BOARD SECTION
6.3.1.
Data Flow
[FAX Tx]
1. An analog image data is output from CIS unit to IC503.
IC503 decode the analog data to digital data, and output to IC300.
Scanner I/F in IC300 process image data and store it in IC400
through SDRAM I/F.
2. CPU compress the data in IC400.
3. CPU transfer the data to MODEM
and output it to TEL LINE through DAA circuit.
IC503 decode the analog data to digital data, and output to IC300.
Scanner I/F in IC300 process image data and store it in IC400
through SDRAM I/F.
2. CPU compress the data in IC400.
3. CPU transfer the data to MODEM
and output it to TEL LINE through DAA circuit.
CN59
CN510
CN61
CN500
SDRAM
MODEM
Scanner
I/F
Print I/F
AFE
IC503
IC400
IC300
Mai n Board
FB tr ansit Board
CN300
SDRAM
I/F
CN750
LAN
USB
USB
I/F
CPU
DAA
IC100
IC101
IC101
PHY
LAN
I/F
DSP
JBIG
CN100
IC750
CI S unit
LSU
TEL
LINE
PC
(KX-MB783 ONLY)
[FAX Rx]
1. FAX data is input from TEL LINE to MODEM in IC300
through DAA circuit.
And then store it in IC400 through SDRAM I/F.
2. CPU decompress the data in IC400.
3. Print I/F retrieve the data from IC400 and output it to LSU.
3. Print I/F retrieve the data from IC400 and output it to LSU.
CN59
CN510
CN61
CN500
SDRAM
MODEM
Scanner
I/F
Print I/F
AFE
IC503
IC400
IC300
Mai n Board
FB tr ansit Board
CN300
SDRAM
I/F
CN750
LAN
USB
USB
I/F
CPU
DAA
IC100
IC101
IC101
PHY
LAN
I/F
DSP
JBIG
CN100
IC750
CI S unit
LSU
TEL
LINE
PC
(KX-MB783 ONLY)
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