Sharp MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man36) Service Manual ▷ View online
MX-3640N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 16
13. PWB/Memory device
MX-3640N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 17
No.
Name
Function/Operation
1
MFP control PWB
Controls image data (compression, decompression, and filing), and controls the whole machine.
Converts print data (PCL/PS) into image data.
2
Right door PWB
Interfaces the right door unit signal.
3
PCU PWB
Controls the engine section.
4
SCU PWB
Controls the scanner and the operation section.
5
Scanner lamp drive PWB
Drives the scanner lamp
6
CCD PWB
Scans document images and performs A/D conversion of the scanning signal.
7
USB I/F PWB
USB I/F
8
HW-KEY PWB
Outputs the key operation signal.
9
PW-KEY PWB
Turns ON/OFF the power on the secondary side.
10
LVDS PWB
Converts the display data signal to the LCD display signal. Controls the touch panel.
11
USB CONV PWB
Converts to the USB connection. .
12
Wireless LAN PWB
Connects the network with the wireless LAN.
13
LD PWB
Drives the laser diode and controls the power.
14
LSU mother PWB
Controls the LSU. Generates the video data. Interfaces the MFP PWB, the scanner control PWB, the
operation PWB, the PCU PWB, and the FAX unit.
15
Driver PWB
Drives the motor.
16
HL control PWB
Drives the heater lamp.
17
DC POWER PWB
Generates the DC voltage.
18
High voltage PWB (MC/DV PWB)
Generates the main charger voltage and the DV bias voltage.
19
High voltage PWB (TC PWB)
Generates the transfer voltage.
20
AC POWER PWB
Generates the AC voltage.
21
Document size detection PWB (Light emitting)
Drives the LED for the document size detection.
22
Document size detection PWB (Light receiving) Outputs the document size detection signal.
23
RSPF driver PWB
Drives the motor, the solenoid, and the clutch in the RSPF section.
24
SD card memory
Stores the MFP PWB program data, the FAX image data, and the font data.
25
DIMM memory
Memory for the printer
26 Compact Flash memory
Stores the printer program data.
27
CF Card
Stores the DSK program data.
28
HDD
Stores the MFP PWB program data, the filing data, the e-manual data, the watermark data, the log data,
and the authentication data. Also used as a work memory.
MX-3640N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 18
14. Fuses and Thermostats
Signal name
Name
Type
Section
F1
Fuse
8.0A(215) AC 250V
AC Power PWB
F2
Fuse
3.15A(215) AC 250V
AC Power PWB
F151
Fuse
6.3A(218) AC 250V
AC Power PWB
F152
Fuse
6.3A(218) AC 250V
AC Power PWB
F153
Fuse
6.3A(218) AC 250V
AC Power PWB
F154
Fuse
4.0A(218) AC 250V
AC Power PWB
F155
Fuse
6.3A(218) AC 250V
AC Power PWB
Signal name
Name
Type
Function/Operation
TS LM
Thermostat LM
Mechanical thermostat
Shuts down the heater lamp (HL_LM) circuit when the fusing section is overheated.
TS UM
Thermostat UM
Mechanical thermostat
Shuts down the heater lamp (HL_UM) circuit when the fusing section is overheated. (Center
section)
TS US
Thermostat US
Mechanical thermostat
Shuts down the heater lamp (HL_US) circuit when the fusing section is overheated. (Edge
section)
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MX-3640N ADJUSTMENTS AND SETTINGS 5 – 1
MX-3640N
Service Manual
[5] ADJUSTMENTS AND SETTINGS
1. General
Each adjustment item in the adjustment item list is associated with
a specific Job number. Perform the adjustment procedur es in the
sequence of Job numbers from the smallest to the greatest.
However, there is no need to perform all the adjustment items. Per-
However, there is no need to perform all the adjustment items. Per-
form only the necessary adjustments according to the need.
Unnecessary adjustments can be omitted. Even in this case, how-
ever, the sequence from the smallest to the gr eatest Job number
must be observed.
If the above precaution should be neglected, the adjustment would
If the above precaution should be neglected, the adjustment would
not complete normally or trouble may occur.
2. Adjustment item list
Job No.
Adjustment item list
Simulation
ADJ 1
Adjust the developing unit
1A
Adjust the developing doctor gap
1B
Adjust the developing roller main pole position
1C
Toner density control reference value setting
25-2
ADJ 2
Adjusting high voltage values
2A
Adjust the main charger grid voltage
8-2
2B
Adjust the developing bias voltage
8-1
2C
Transfer current and voltage adjustment
8-6
ADJ 3
Image density sensor adjustment
3A
Image density sensor adjustment
44-2
ADJ 4
Image lead edge position, image
loss, void area, image off-center,
image magnification ratio
adjustment
(Automatic adjustment)
4A
Print image main scanning direction automatic magnification ratio adjustment (Print engine)
50-28
4B
Print image off-center automatic adjustment (Print engine) (Each paper feed tray)
50-28
4C
Copy mode image lead edge position, image loss, void area, image off-center, sub
scanning direction image magnification ratio automatic adjustment (Scanner)
(Document table mode)
50-28
4D
Copy mode image lead edge position, image loss, void area, image off-center, sub
scanning direction image magnification ratio automatic adjustment (Scanner) (RSPF mode)
50-28
ADJ 5
Print engine image distortion
adjustment / OPC drum phase
adjustment / Color registration
adjustment (Print engine section)
5A
Print engine image distortion adjustment (Manual adjustment) / OPC drum phase
adjustment (Automatic adjustment) / Color registration adjustment (Automatic adjustment)
50-22
5B
Print engine image skew (LSU skew) adjustment (Manual adjustment)
(No need to adjust normally)
50-20 (64-1)
5C
Color registration offset adjustment (No need to adjust normally)
50-20
ADJ 6
Scan image distortion
adjustment
(Document table mode)
6A
Scanner (reading) unit parallelism adjustment
6B
Scan image (sub scanning direction) distortion adjustment
6C
Scan image (main scanning direction) distortion adjustment
ADJ 7
Scanner image skew adjustment (RSPF mode)
64-2
ADJ 8
Scan image focus adjustment
48-1
ADJ 9
Print lead edge image position adjustment (Printer mode)
50-5
ADJ 10/
SET1
Color balance and density
adjustment
Note before execution of the image quality adjustment
Copy image quality check
Printer image quality check
Copy image quality check
Printer image quality check
10A Scanner calibration (CCD calibration)
63-3 (63-5)
SET
1
Color balance adjustment
target setup
1A
Copy color balance adjustment target setup
63-7/8/11
1B
Printer color balance adjustment target setup
67-26/27/28
10B Copy/Printer color balance and density adjustment (Automatic adjustment)
(Basic adjustment)
46-74
10C Copy image quality adjustment
(Basic adjustment)
10C
(1)
Copy color balance and density adjustment
(Automatic adjustment)
46-24
10C
(2)
Copy color balance and density adjustment
(Manual adjustment)
46-21
10D Copy / Image send / FAX
image quality adjustment
(Individual adjustment)
10D
(1)
Color copy density adjustment (for each color
copy mode) (separately for the low-density area
and the high-density area)
(No need to adjust normally)
46-1
10D
(2)
Monochrome copy density adjustment (for each
monochrome copy mode) (separately for the low-
density area and the high-density area)
(No need to adjust normally)
46-2
10D
(3)
Color copy color balance, gamma adjustment
(for each color copy mode)
(No need to adjust normally)
46-10
10D
(4)
Monochrome copy density, gamma adjustment
(for each monochrome copy mode)
(No need to adjust normally)
46-16
10D
(5)
Automatic monochrome (Copy/Scan/FAX) mode
document density scanning operation (exposure
operation) conditions setting
(Normally no need to set)
46-19
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