Pwb (Main Unit Section) - Sharp AR-M550N Service Manual

: Feb. 9 2004
1
Signal
Code
name
VFM-BKL VFM-BKL Process exhaust fan motor 4
1
VFM-BKR VFM-BKR Fusing exhaust fan motor
1
VFM-BKU VFM-BKU Paper cooling fan motor
1
VFM-EX1 VFM-EX1 Process exhaust fan motor 1
1
(Front side)
VFM-EX2 VFM-EX2 Process exhaust fan motor 2
1
(Center)
VFM-EX3 VFM-EX3 Process exhaust fan motor 3
1
(Rear side)
G. PWB (Main unit section)
1
No Name
1 AC power PWB
2 CCD PWB
3 CIS control PWB/CIS unit
1
4 DC main power PWB
5 DC sub power PWB
6 LVDS/INV PWB
7 MFP FLASH ROM PWB
8 MFP controller PWB
9 Mother PWB
10 PCU FLASH ROM PWB
11 PCU PWB
12 SPF PWB
13 SPF paper width detection PWB
14 Image density sensor PWB
15 OPC drum mark sensnor PWB
16 Document size detection light
reception PWB
Name
DC brushless
motor
DC brushless
motor
DC brushless
motor
DC brushless
motor
DC brushless
motor
DC brushless
motor
6
27
16
26
2
5
17
8
28
7
19
Controls the AC power.
Scans document images.
Scans document images (back surface) and controls the CIS unit.
Generates the DC power.
Generates the DC power in the power save mode.
Generates the LCD display signal, and generates a high voltage for
backlight.
Stores the MFP control program.
Controls the image-related items and controls all over the machine.
Interfaces the MFP control PWB and the PCU PWB.
Stores the PCU control program.
Controls the engine section.
Drives the SPF section loads./ Interfaces the sensor and detector
signals.
Detects the SPF paper tray paper width.
Detects the toner patch density in the image density correction.
Detects the OPC drum mark.
Generates the document size detection signal.
AR-M550/M620/M700 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 16
Type Function/Operation
Exhaust ozone and heat
from the process section.
Exhaust heat from the
fusing section.
Exhaust heat from paper in
the inner tray.
Exhaust ozone and heat
from the process section.
Exhaust ozone and heat
from the process section.
Exhaust ozone and heat
from the process section.
Function/Operation
Active
MODEL NOTE
condition
PWM control
PWM control
PWM control
PWM control
PWM control
PWM control
13
3
20
12
25
14
33
23
15
24
9
10
30
11
32
4
31
1
22
MODEL NOTE