Sharp AR-M160 (serv.man14) Service Manual ▷ View online
AR-M205 ELECTRICAL SECTION 13-3
(1) Noise filter circuit
The filter circuit is composed of L and C. It reduces common noises and
normal mode noises generated from the AC line.
The common noise means that generated in each line for GND. Its noise
The common noise means that generated in each line for GND. Its noise
component is delivered through C001, C003, and C007 to GND.
The normal noise means that overlapped in the AC line or the output line.
It is attenuated by C002, L001, C006, and L002. Refer to fig (2).
It is attenuated by C002, L001, C006, and L002. Refer to fig (2).
fig (2) Noise filter circuit
(2) Rush current prevention circuit and rectifying/
smoothing circuit
fig (3) Rush current prevention, rectifying/smoothing circuit
fig (3) Rush current prevention, rectifying/smoothing circuit Since the AC
power is directly rectified, if there were not this rush current prevention
resistor (TH001), an extremely large rush current would flow due to a
resistor (TH001), an extremely large rush current would flow due to a
charging current flowing through the smoothing capacitor C010 when
turning on the power.
To prevent against this, the rush current prevention resistor TH001 is
To prevent against this, the rush current prevention resistor TH001 is
provided between the rectifying diode D002 and the smoothing diode
C010, suppressing a rush current.
The rectifying/smoothing circuit rectifies a 50/60Hz AC voltage with the
The rectifying/smoothing circuit rectifies a 50/60Hz AC voltage with the
rectifying circuit, and smoothes it with the smoothing capacitor C010.
(3) Inverter and control circuit (Flyback converter system)
fig (4) Inverter and control circuit
This circuit is one-stone separate excitation DC-DC converter called
flyback converter, as shown in fig (4).
When an electromotive voltage of IC is applied through D012, R005, and
When an electromotive voltage of IC is applied through D012, R005, and
R006 to IC002, IC002 oscillates to conduct Q001.
As a result, a voltage is applied to the primary winding of the converter
transformer (T001) and at the same time a voltage is generated in the
transformer (T001) and at the same time a voltage is generated in the
driving winding of IC002 to operate IC002. Then IC002 turns ON/OFF
Q001 at the frequency of about 70KHz determined by R016.
Under the ON state, the voltage in the secondary winding is reversed to
Under the ON state, the voltage in the secondary winding is reversed to
the diode D103 and no current flows through the secondary winding of
T001.
Under the OFF state, the current flowing through the primary winding is
Under the OFF state, the current flowing through the primary winding is
in the same direction as the primary winding, conducting D103 and
transmitting energy to the secondary winding. Refer to fig (4).
fig (5) Operation waveform of the flyback converter
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AR-M205 ELECTRICAL SECTION 13-4
The control circuit is subject to negative feedback from the secondary
side as shown in fig (4). A photo coupler (PC002) is employed to insulate
side as shown in fig (4). A photo coupler (PC002) is employed to insulate
between the primary side and the secondary side to feed back the
control signal to the primary side.
When the output voltage is increased by energy transmission from T001,
When the output voltage is increased by energy transmission from T001,
the voltage detected by R109 and R111 is compared with the reference
voltage of IC102. When it exceeds the reference voltage, the current
flowing through IC102 (that is, the photo diode current of PC002) is
flowing through IC102 (that is, the photo diode current of PC002) is
increased and transmitted to the primary side. Then the potential at the
feedback pin (2 pin) of IC102 is decreased to control Q001. Therefore,
the change in the output voltage on the secondary side is passed
the change in the output voltage on the secondary side is passed
through IC102 and PC002 to control Q001, stabilizing the output voltage.
(4) Overcurrent protection circuit (Primary side)
The inverter circuit of the primary side is connected with the current
detection resistor R012. When an overcurrent occurs in the secondary
detection resistor R012. When an overcurrent occurs in the secondary
side, the current flowing through the primary side inverter Q001 is
increased. The current is detected by R012, and passed through R013 to
IC002 overcurrent restricting pin (3 pin) to turn OFF Q002, shutting off all
IC002 overcurrent restricting pin (3 pin) to turn OFF Q002, shutting off all
power. To resupply the power, turn off and on the power. Refer to fig (4).
(5) Rectifying/smoothing circuit (+5V)
fig (6) Rectifying/smoothing circuit
The high frequency pulse generated by the inverter circuit is decreased
by the converter transformer, rectified by the high frequency diode D103,
by the converter transformer, rectified by the high frequency diode D103,
and smoothed by C103 and C104.
fig (7) +5V rectifying/smoothing circuit voltage waveform
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AR-M205 ELECTRICAL SECTION 13-5
3.Actual wiring diagram
ACTUAL WIRING DIAGRAM 1/7
B03P-VL
(WHITE)
B4B-PH-K-BL
(BLACK)
SPF GROUND WIRE
ORIGINAL TRAY HARNESS
SENSOR HARNESS
04FE-BT-VK-N
(WHITE)
B3B-PH-K-R
(RED)
Mirror HP
SENSOR
OPTICAL BASE PLATE
CCD PWB
Mirror MOTOR
COPY LAMP
THERMISTER
Side Cover SW
MAIN
MOTOR
TONER
MOTOR
DEV UN
POWER PWB
MCU-PWB
DEHUMIDIFIER
HEATER PWB
HAND PAPER PICK
UP SOLENOID
HAND PAPER EMPTY
SENSOR
TC
CASETTE EMPTY
SENSOR
PS SOL
GP1S58(C)
GP1S58(O)
2nd CASETTE
(O) Normal Open :Low
(C) Normal Close :High
CASSETTE
DEHUMIDIFIER
HEDATER
MIRROR
DEHUMIDIFIER
HEATER
Option
GRID
MC
MCFB
BC
Option
HVU
Bias
SPF UN
USB1.1
IEEE1284
Option
PAPER IN
SENSOR
PICK UP SOL
FUSER
AC Cord
AC SW
DEHUMIDIFIER
HEATER SW
HEATER LAMP
REACTOL
230V ONLY
POLYGON
MOTOR
LSU
APC-PWB
BD-PWB
COOLING FUN
I/F
FFC
FFC
FFC
FFC
FFC
FFC
Front Cover SW
SRU
DUP MOTOR
CASETTE SWITCH
SENSOR
E-SORT
FFC
B3B-PH-K-S
(WHITE)
B3B-PH-K-R
(RED)
SUB-D 25
FE4-32-S1505
(BLACK)
B4B-PH-K-S
(WHITE)
08FE-BT-VK-N
(WHITE)
B2P-VH
(WHITE)
B13B-PH-K-S
(WHITE)
B3P-VH
(WHITE)
B3B-PH-K-S
(WHITE)
B20B-PHDSS-B
(WHITE)
B3B-PH-K-BK
(BLACK)
B4B-PH-K-S
(WHITE)
B2B-XH-A-S
(WHITE)
B2B-XH-A-BK
(BLACK)
B2B-XH-A-R
(RED)
B4B-PH-K-R
(RED)
B12B-PHDSS-B
(WHITE)
B26B-PHDSS-B
(WHITE)
35FE-BT-VK-N
(WHITE)
22FE-BT-VK-N
x2
(WHITE)
22FE-BT-VK-N
X2
(WHITE)
13FE-BT-VK-N
(WHITE)
B7B-PH-K-S
(RED)
B18B-PHDSS-B
(WHITE)
B4B-PH-K-S
(WHITE)
3P TERMINAL
230V ONLY
B4B-PH-K-S
(WHITE)
B3B-PH-K-R
(RED)
B2B-PH-K
(WHITE)
B02-XL-HDB
(WHITE)
35FE-BT-VK-N
(WHITE)
DRUM INISAL SW
B3B-PH-K-BK
(BLACK)
B5B-PH-K-S
(WHITE)
USB2.0
B3B-PH-K-S
(WHITE)
SHIFTER
MOTOR
GP1A71A1(O)
SHIFTER HP
SENSOR
COOLING
FUN
COOLING
FUN
13FE-BT-VK-N
(WHITE)
MODEL W/O SHIFTER
MODEL WITH SHIFTER
B3B-PH-K-SX
2
(WHITE)
COOLING
FUN
COOLING
FUN
COPY OP PWB
OPERETION PANEL
IMSA-9610S-
24C
(BLACK)
AUDITOR
COIN VENDER
Option
Option
1-171825-2
B6B-PH-K-S
(WHITE)
PAPER OUT
SENSOR
DUP
SENSOR
Option
24FMN-BTRK-A
(BLACK)
3
*
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AR-M205 ELECTRICAL SECTION 13-6
ACTUAL WIRING DIAGRAM 2/7
MCU PWB
MAIN MOTOR PWB
LSU UNIT
CN2(B12B-PHDSS-S)
1
2
6
3
4
5
7
8
9
10
11
12
/PMCLK_A
GND
GND
APCSTT
SHOLD
/VIDEO
/SYNC
SW5V
24V
P-GND
/PMD
/PMRDY
BU12P-TR-P-H
PM PWB
PL
PK
BR
GY
RD
1
2
3
4
/PMCLK
P-GND
/PMD
/PMRDY
5
24V
177622-5
APC
4
5
9
6
/SYNC
/VIDEO
GND
+5V
7
/SAMP
8
10
3
2
SELECT
/SYNC
+5V
APCSTT
1
GND
OR
LB
GY
OR
LB
PL
BR
PK
GY
LB
B10B-PH-K-S
3
2
1
GND
+5V
/SYNC
OR
LB
GY
BPC
B3B-PH-K-S
OR
LB
PL
BR
PK
GY
LB
PL
PK
BR
GY
RD
OR
LB
PL
BR
PK
GY
LB
PL
PK
BR
GY
RD
OR
LB
PL
BR
PK
GY
LB
PL
PK
BR
GY
RD
12
11
10
9
8
7
6
5
4
3
2
1
<LSU HARNESS>
(FFC)
08FE-BT-VK-N
CN24(08FE-BT-VK-N)
<MAIN MOTOR HARNESS>
1
2
TMA_O
TMB_O
CN30(B2P-VH)
TONER MOTOR
1
2
3
4
5
6
7
8
9
10
11
12
/PMCLK_A
GND
GND
APCSTT
SHOLD
/VIDEO
/SYNC
INT5V
24V
P-GND
/PMD
/PMRDY
PS SOL
PICK UP SOL
RD
B3B-PH-K-S
PL
OR
HAND PAPER EMPTY SENSOR PWB
<HAND ENPTY SENSOR HARNESS>
CN17(B4B-PH-K-S)
1
2
3
P-GND
/MMRDY
/MMD
4
5
6
P-GND
P-GND
7
8
SW24V
GND
SW24V
8
7
6
P-GND
/MMRDY
/MMD
5
4
3
P-GND
P-GND
2
1
SW24V
N.C
SW24V
2
3
HPEMPTY
1
LEDHPEMPTY
2
3
HPEMPTY
1
LEDHPEMPTY
2
/PSRSOL
1
24V
CN23(B2B-XH-RD)
2
/CPSOL
1
24V
BL
BL
2
3
GND
PIN
1
LEDPIN
CN22(B2B-XH-S)
PAPER IN SENSOR
PWB
175767-3
GY
PL
GY
<PEPAR IN SENSOR HANESS>
GY
PL
OR
1
2
GND
PIN
3
LEDPIN
2
3
GND
CPEMPTY
1
LEDCPEMPTY
GY
PL
OR
<CASETTE EMPTY SENSOR HANESS>
GY
PL
OR
CASETTE EMPTY SENSOR
PWB
2
3
GND
N.C.
1
CASETTE
15778-2
PL
OR
<CASETTE SWITCH HANESS>
GY
OR
2
GND
1
GASETTE
CASETTE SWITCH
PWB
CN20(B3B-PH-K- RD)
CN18(B3B-PH-K-K)
CN14(B3B-PH-K-S)
CN19 (B6B-PH-K-S)
PAPER OUT SENSOR
PWB
OR
GY
PL
PL
GY
OR
<DUPLEX/P-OUT SENSOR/COOLING FUN
HARNESS >
1
2
3
5V
GND
PDPX
6
GND
4
5
5V
POUT
1
2
3
5V
GND
PDPX
OR
GY
PL
PL
GY
OR
B3B-PH-K-*
3
GND
1
2
5V
POUT
B3B-PH-K-*
DUP SENSOR
PWB
1
2
3
VFMOUT
P-GND
/VFMCNT
1
2
3
4
5
6
7
8
9
10
SFTDA
SFTDB
/SFTDB
24V
P-GND
/VFMCNT
VFNOUT
P-GND
/SFTDA
SFTHP
CN26(13FE-BT-VK-N)
13
12
11
10
9
8
7
6
5
4
CN1(13FE-BT-VK-N)
SHIFTER MOTOR
GY
OR
B3B-PH-K-*
2
3
GND
SFTHP
1
5V
GY
SHIFTER HP SENSOR
PWB
SFTHP
LEDVCC
GND
1
2
3
1
2
3
4
5
/SFTMA
SFTMB
SFTMA
24V
24V
CN3(B6B-PH-K-R)
GY
OR
GY
<SHIFTER HP
SENSOR HANESS>
PAPER EXIT INTERFACE
PWB
CN2(B3B-PH-K-K)
<TRAY UNIT HARNESS>
<BD HARNESS>
(FFC)
GND
GY
N.C
RD
BK
BK
GY
PL
OR
<COOLING FUN HARNESS>
2
N.C.
1
5V
CN31(B3B-PH-K-K)
2
DRUM
1
5V
<DRAM INISAL SWITCH HANESS>
(CRU ONLY)
15778-2
2
DRUM
SFTDA
SFTDB
/SFTDB
24V
P-GND
/VFNCNT
VFMOUT
P-GND
/SFTDA
SFTHP
3
2
1
11
5V
12
D-GND
13
P-GND
INTERNAL COOLING FAN
INTERNAL COOLING FAN
INTERNAL
COOLING FAN
INTERNAL
COOLING FAN
5V
P-GND
D-GND
/VFMCNT
VFMOUT
P-GND
1
2
3
/VFMCNT
VFMOUT
P-GND
1
2
3
CN4(B3B-PH-K- *)
CN5(B3B-PH-K- *)
1
2
3
VFMOUT
/VFMCNT
P-GND
CN15 (B3B-PH-K-S)
CN16 (B3B-PH-K-S)
MODEL W/O SHIFTER
MODEL WITH SHIFTER
4
GND
6
/SFTMB
1
2
GND
PIN
3
LEDPIN
175767-3
1
INTERFACE
) !"#$%
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