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AR-M550 (serv.man4)
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Service Manual
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Copying Equipment / ALL DATA
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ar-m550-sm4.pdf
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PREV: Sharp AR-M550 (serv.man3) Service Manual / Specification

Sharp AR-M550 (serv.man4) Service Manual ▷ View online

AR-M550/M620/M700  DETAILS OF EACH SECTION  6 - 72
3) Turning the MG roller, take out the old developer.
4) Insert the new developer.
a-2. DV seal
1) Take out the developing tank. (See “a. Developing unit” in this sec-
tion)
2) Take out the old DV seal.
3) Wipe the sealing face with alcohol.
4) Affix the new DV seal at the reference position.
a-3. MG holders F and R
1) Take out the developing tank. (See “a. Developing unit” in this sec-
tion)
2) Remove the DV cover. (See “a-1. Developer” in this section)
3) Remove the doctor cover.
4) Remove the DV cover front.
5) Remove the bias line and main pole position adjusting plate and
screws.
6) Remove the MG gear and screws.
7) Remove the side seals F and R.
AR-M550/M620/M700  DETAILS OF EACH SECTION  6 - 73
8) Remove the MG roller unit.
9) Remove the doctor attaching plate.
10) Remove the MG holders F and R.
a-4. Side Seals F and R
1) Take out the developing tank.
2) Remove the doctor cover.
3) Peel off the right and left side seals.
4) Clean the peeled area.
5) Peel off the new right and left seals from the mounting paper and
affix in the designated positions.
a-5. Toner concentration sensor
1) Remove the developing tank. (See “a. Developing unit” in this sec-
tion)
2) Remove the DV cover. (See “a-1. Developer” in this section)
3) Remove the toner concentration sensor.
AR-M550/M620/M700  DETAILS OF EACH SECTION  6 - 74
[OPC drum section]
A. General
In this section, laser beams are radiated to the OPC drum surface
which was negatively charged, making electrostatic latent images.
B. Major parts and signal functions
Code
Signal 
name
Name
Function/Operation
Type
Model
Note
DMS
DMS
OPC drum marking sensor signal
OPC drum mark detection
Reflection type
Analog detector
PCS
PCS
Image density sensor
Detection of density of toner patch on the OPC 
drum
Reflection type
Analog detector
TH-CL
TH-CL
OPC drum cleaner temperature 
sensor
OPC drum cleaner peripheral temperature 
detection
Thermistor
Analog detector
DM
DM
OPC drum motor
Drives the OPC drum and the transfer section.
DC brushless 
motor
PSPS
PSPS
Drum separation pawl solenoid
Drives the OPC drum separation pawl
Solenoid
DL
DL
Discharge lamp
Discharges electric charges on the OPC drum.
Lamp
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
PCS-LED
PCS
DMS-LED
DMS
/DL
/PTDL
/PSPS
HUS-TC
GND2
TH-CL
GND2
TLS
GND2
B20B-PHDSS-B
/PWM-RSV1
+24V1
+5V2
+24V1
+12V2
+12V2
CN-8
+24V-DL
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
16
15
14
12
11
10
PCU PWB
B18B-PHDSS-B
CN-6
GND2
GND2
/DM
DMCLK
DM-T
+5V2
GND2
/DVM
DVMCLK
DVM-T
+5V2
GND2
+5V2
/FUM
FUMCLK
FUM-T
+24V1
/VFM-BKR
AC PWB
5
4
3
2
1 GND2
/DVM
DVMCLK
DVM-T
B2PS-VH
S5B-PH-K-S
+5V2
+38V
+38V
GND1
GND1
+38V
GND1
2
1 +38V
GND1
CN-5
B16B-PADSS-1
PCS
DMS
DL
TH-CL
9
8
7
6
5
4
3
2
1
9
8
7
6
5
4
3
2
1
20
19
18
17
16
15
14
13
12
11
10
20
19
18
17
16
15
14
13
12
11
10
4
3
2
1
2
1
1
2
2
3
2
1
2
3
2
1
1
3
1
3
3
2
1
/PSPS
GND2
TH-CL
(NC)
(NC)
PCS-LED
PCS
DMS-LED
DMS
/DL
/PTDL
/PSPS
TH-CL
GND2
(NC)
(NC)
+24V1
+24V1
+24V1
S4B-PH-K-S
DRAWER
TSDR-20V-K/TSDP-20V-K
+12V2
+12V2
(NC)
(NC)
(NC)
SRA-01T-3.2
SRA-01T-3.2
GND2
+24V-DL
SMP-02V-BC/SMR-02V-B
PCS
DMS
SMR-03V-B/SMP-03V-BC
SMR-03V-B/SMP-03V-BC
+12V2
PCS-LED
+12V2
DMS-LED
PHR-3
+24V-DL
/DL
(NC)
PROCESS UNIT
DM
1
2
3
4
5
7
6
PSPS
8
9
No.
Name
Operation
1
OPC drum
Forms electrostatic latent images by laser beams.
2
Cleaning blade
Cleans remaining toner on the OPC drum.
3
CL brush roller
Cleans remaining toner on the OPC drum.
4
Sub blade (Cleaning seal)
Prevent against toner leakage from the cleaner section.
5
Side seal F, R
Prevents against toner dispersion.
6
Drum separation pawl
Separates paper from the drum.
7
Separation pawl oscillation shaft
Moves in the front and rear frame direction to install the separation pawl.
8
Waste toner transport screw
Transports toner from the cleaner unit to the waste toner transport pipe.
9
Waste toner transport pipe
Transports toner from the cleaner unit to the waste toner box in the toner cartridge front section.
AR-M550/M620/M700  DETAILS OF EACH SECTION  6 - 75
C. Operational descriptions
The OPC drum surface is negatively charged by the main charger. The
laser beam images are radiated to the OPC drum surface by the laser
unit to form latent electrostatic images.
1) The OPC drum surface is negatively charged by the main charger.
The main charger grid is provided with the screen grid. The OPC
drum is charged at a voltage virtually same as the voltage applied
to the screen grid.
2) LED lights are radiated to the OPC drum surface by the laser unit
to form latent electrostatic images.
When LED lights are radiated to the OPC drum CGL, negative and
positive charges are generated. 
Positive charges generated in CGL are attracted to the negative
charges on the OPC drum surface. On the other hand, negative
charges are attracted to the positive charges in the OPC drum alu-
minum layer. 
Therefore, positive charges and negative charges are balanced
out on the OPC drum and in the aluminum layer, reducing positive
and negative charges to decrease the OPC drum surface voltage. 
Electric charges remain at a position where LED lights are not radi-
ated. 
As a result, latent electrostatic images are formed on the OPC
drum surface.
3) After transfer operation, remaining toner is removed by the clean-
ing blade.
Toner removed from the OPC drum surface is transported to the
waste toner section in the toner cartridge by the waste toner trans-
port screw.
4) The whole surface of the OPC drum is discharged.
By radiating the discharge lamp light to the discharge lens, light is
radiated through the lens to the OPC drum surface. 
When the discharge lamp light is radiated to the OPC drum CGL,
positive and negative charges are generated. 
Positive charges generated in CGL are attracted to the negative
charges on the OPC drum surface. On the other hand, negative
charges are attracted to positive charges in the aluminum layer of
the OPC drum. 
Therefore, positive and negative charges are balanced out on the
OPC drum surface and in the aluminum layer, reducing positive
and negative charged to decrease the surface voltage of the OPC
drum.
Aluminum
layer
OPC drum
CTL
CGL
High voltage unit
Main corona unit
Screen grid
OPC drum
LED lights
Aluminum
layer
OPC drum
CGL
CTL
Drum
Lamp
CLT
CGL
Auminum
layer
Auminum
layer
CLT
CGL
Drum
Page of 127
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AR-M550 (serv.man151) Windows Vista PCL6 64 Bit Driver. Windows Vista Drivers 5.86 MB
AR-M550 (serv.man152) Windows Vista PCL6 Driver. This diver can be used in conjunction with 64 Bit printer driver. Windows Vista Drivers 5.17 MB
AR-M550 (serv.man153) Windows 2000 PCL6 64 Bit Driver. Windows 2000 Drivers 5.86 MB
AR-M550 (serv.man154) Windows 2000 PCL6 Driver. This diver can be used in conjunction with 64 Bit printer driver. Windows 2000 Drivers 5.17 MB
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AR-M550 (serv.man25) ARM550 620 700 Parts Guide (Revised) Service Manual / Parts Guide 127 17.99 MB
AR-M550 (serv.man26) Complete Parts Guide. Service Manual / Parts Guide 127 15.54 MB
AR-M550 (serv.man27) Part Guide for ARM550 620 700 PWB's Service Manual / Parts Guide 37 565.97 KB
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AR-M550 (serv.man62) Reinforcement of the Delivery Actuator Service Manual / Technical Bulletin 2 271.3 KB
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AR-M550 (serv.man66) ARE 991 DAMAGE TO THE 1ST 2ND PAPER FEED DRIVE UNIT AND THE DRUM DRIVE UNIT SHAFTS. Service Manual / Technical Bulletin 3 576.33 KB
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AR-M550 (serv.man71) ARE-962 F1-46 TROUBLE CODE OCCURRENCE AFTER JAM PROCESSING. Service Manual / Technical Bulletin 2 290.02 KB
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AR-M550 (serv.man78) ARE916 IMPROVEMENT IN PAPER FEEDING PERFOMANCE OF SPF. Service Manual / Technical Bulletin 2 94.05 KB
AR-M550 (serv.man79) AER900 COUNTER MEASURE AGAINST REVERSE PRESSURE RELEASE LEVER COMING AWAY FROM ITS HOOK. Service Manual / Technical Bulletin 1 106.88 KB
AR-M550 (serv.man80) ARE-891R NEW SETUP PROCEDURE WHEN REPLACING DEVELOPER (SUPERSEDING BULLETIN DATED 1ST JULY 2008) Service Manual / Technical Bulletin 1 69.32 KB
AR-M550 (serv.man81) ARE 896. AR-F15 F16 ROM upgrade. Service Manual / Technical Bulletin 1 27.39 KB
AR-M550 (serv.man82) ARE 897. AR-F16 Saddle unit ROM UPGRADE Service Manual / Technical Bulletin 1 25.71 KB
AR-M550 (serv.man83) ENHANCEMENT OF STRENGTH OF DSPF (SPF) ADJUST PLATES F R. Service Manual / Technical Bulletin 2 409.12 KB
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AR-M550 (serv.man86) ARE882-F2-00 ETC. DUE TO POOR CONTACT BETWEEN TRANSFER AC TERMINAL AND TRANSFER ELECTRODE SPRING. Service Manual / Technical Bulletin 2 343.86 KB
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AR-M550 (serv.man94) 053 ROM Version 15 Service Manual / Technical Bulletin 2 65.87 KB
AR-M550 (serv.man95) 052-Change to new type flash ROM (ELEM) Service Manual / Technical Bulletin 2 140.44 KB
AR-M550 (serv.man96) 051-Making LCD, FFC and LVDS INV board service parts available as a kit. Service Manual / Technical Bulletin 2 58.14 KB
AR-M550 (serv.man97) Improvement of the fusing unit. Service Manual / Technical Bulletin 3 183.54 KB
AR-M550 (serv.man98) Update to tech bulletins 048 (ARM550U M620U), 030 (ARM700U). Improvement for initial low density and halftone density. Service Manual / Technical Bulletin 1 107.7 KB
AR-M550 (serv.man99) Improvement for initial low density and halftone density. Service Manual / Technical Bulletin 2 112.88 KB
AR-M550 (serv.man100) 046. ROM upgrade Service Manual / Technical Bulletin 2 104.1 KB
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AR-M550 (serv.man102) Change in I F connectors for coin vendors. Service Manual / Technical Bulletin 1 25.38 KB
AR-M550 (serv.man103) ROM Upgrade..12 Service Manual / Technical Bulletin 3 12.56 KB
AR-M550 (serv.man104) Additions to details described in simulation 62-10. Service Manual / Technical Bulletin 1 36.84 KB
AR-M550 (serv.man105) Measures against noise generated from the toner motor on the toner cartridge. Service Manual / Technical Bulletin 3 40.16 KB
AR-M550 (serv.man106) Improvement in halftone image quality. Service Manual / Technical Bulletin 6 1.53 MB
AR-M550 (serv.man107) To reduce paper skew or paper misfeeding when duplex copying printing. Service Manual / Technical Bulletin 2 104.81 KB
AR-M550 (serv.man108) Prevention of thermistor marks appearing on the upper fuser roller. Service Manual / Technical Bulletin 1 18.02 KB
AR-M550 (serv.man109) Prevention of the paper discharge actuator becoming detached. Service Manual / Technical Bulletin 1 25.17 KB
AR-M550 (serv.man110) Improvement to clear waste toner from the process unit. Service Manual / Technical Bulletin 6 1.69 MB
AR-M550 (serv.man111) Performane enhancemwnts with ROM upgrade 10..v4.00 Service Manual / Technical Bulletin 31 2.85 MB
AR-M550 (serv.man112) Remedy for U2-50 error that occurs when a security kit is installed. Service Manual / Technical Bulletin 3 187.32 KB
AR-M550 (serv.man113) 032-Increased margins of detection for MPRD2 sensor in the interface pass unit. Service Manual / Technical Bulletin 2 44.51 KB
AR-M550 (serv.man114) 034-Increase adhesion strength of the oil roller to the core shaft. Service Manual / Technical Bulletin 2 49.67 KB
AR-M550 (serv.man115) 033-Rom upgrade 10 Service Manual / Technical Bulletin 2 48.13 KB
AR-M550 (serv.man116) 031-Measures against misfeeding at POD1_N, due to breaking chipping of the upper fuser pawls and the drum pick off pawls. Service Manual / Technical Bulletin 8 339.86 KB
AR-M550 (serv.man117) 030-Discontinued use of the one-way gear (30T) in the left-hand door unit. Service Manual / Technical Bulletin 2 101.36 KB
AR-M550 (serv.man118) 029-Improvement to prevent the deformation of the door switch lever. Service Manual / Technical Bulletin 1 20.82 KB
AR-M550 (serv.man119) 028-Change of side seal R on the processing unit. Service Manual / Technical Bulletin 1 60.63 KB
AR-M550 (serv.man120) 027-Prevention against indicating incorrect paper size on the manual paper feed tray. Service Manual / Technical Bulletin 2 45.47 KB
AR-M550 (serv.man121) 026-To prevent an abnormal noise generated from the waste toner transport idle gear. Service Manual / Technical Bulletin 1 48.98 KB
AR-M550 (serv.man122) 025-Prevention of POD1_N misfeeds due to the paper being caught on the broken upper separator pawl of the fusing unit. Service Manual / Technical Bulletin 1 42.72 KB
AR-M550 (serv.man123) 024-Improvement for the white void of the second side when a thin paper document is duplexed using the SPF. Service Manual / Technical Bulletin 1 42.17 KB
AR-M550 (serv.man124) 023-Prevention of POD1_N misfeeds due to the paper caught on the drum separator pawl section. Service Manual / Technical Bulletin 4 225.7 KB
AR-M550 (serv.man125) 022-Adjustment required when replacing the CIS unit or the CIS pwb is replaced. Service Manual / Technical Bulletin 1 8.36 KB
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AR-M550 (serv.man127) 021-To prevent blurr sections at the end of an A3 copy. Service Manual / Technical Bulletin 1 7.49 KB
AR-M550 (serv.man128) 019-Improvement of the reset ability of the conveyance sensors for the fifth tray interface and the manual bypass feeder. Service Manual / Technical Bulletin 2 37.14 KB
AR-M550 (serv.man129) 018-Change in the MC cleaner handle. Service Manual / Technical Bulletin 2 90.33 KB
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AR-M550 (serv.man133) ROM Upgrade .7 Service Manual / Technical Bulletin 2 35.6 KB
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AR-M550 (serv.man135) Change of first second paper feeder PG upper part Service Manual / Technical Bulletin 1 96.71 KB
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AR-M550 (serv.man137) Change of paper detection actuator and separation roller cover in manual paper feeder units Service Manual / Technical Bulletin 2 95 KB
AR-M550 (serv.man138) Addition of INT SP harness in rear frame section Service Manual / Technical Bulletin 1 128.78 KB
AR-M550 (serv.man139) Change of side seals in process unit Service Manual / Technical Bulletin 1 111.8 KB
AR-M550 (serv.man140) Stay for the fixing section has been changed, and the auxiliary CL roller SP has been added. Service Manual / Technical Bulletin 1 92.04 KB
AR-M550 (serv.man141) Irregular sound caused by Tandem Cover Unit Service Manual / Technical Bulletin 2 147.68 KB
AR-M550 (serv.man142) Dragon fuser mod kit, please refer to Technical Bulletin 016 for further details. Service Manual / Technical Bulletin 4 77.18 KB
AR-M550 (serv.man143) Upgrading of ROM version (6) Service Manual / Technical Bulletin 4 393.36 KB
AR-M550 (serv.man144) Correction for DC power blowout due to contact of EMI filter and CIS cover Service Manual / Technical Bulletin 2 188.89 KB
AR-M550 (serv.man145) Additional work for replacing photoconductive drum Service Manual / Technical Bulletin 1 39.68 KB
AR-M550 (serv.man146) ROM upgrade .. (4), (5) Service Manual / Technical Bulletin 3 39.58 KB
AR-M550 (serv.man32) REF. ARE932 Energy Star ROM UPGRADE ... (18). WITH AR-P19 NON-ELEM Driver / Update 222.52 KB
AR-M550 (serv.man33) REF. ARE932 Energy Star ROM UPGRADE ... (18). WITH AR-P19 ELEM Driver / Update 197.12 KB
AR-M550 (serv.man34) REF. ARE932 Energy Star ROM UPGRADE ... (18). WITHOUT AR-P19 ELEM Driver / Update 9.72 MB
AR-M550 (serv.man35) REF. ARE932 Energy Star ROM UPGRADE ... (18). WITHOUT AR-P19 NON-ELEM Driver / Update 9.72 MB
AR-M550 (serv.man36) ARM550 620 700 OSA Firmware V5.d51 ELEM Driver / Update 12.82 MB
AR-M550 (serv.man37) ARM550 620 700 OSA Firmware V5.d51 Non ELEM Driver / Update 12.81 MB
AR-M550 (serv.man38) P19 Firmware Update For 'U' Version Models Vp4.05 Driver / Update 13.14 MB
AR-M550 (serv.man39) P19 Firmware Update For 'U' Version Models (ELEM) Vp4.05 Driver / Update 13.15 MB
AR-M550 (serv.man40) Firmware Update For 'U' Version Models Vu4.05 Driver / Update 10.61 MB
AR-M550 (serv.man41) Firmware Update For 'U' Version Models (ELEM) Vu4.05 Driver / Update 10.62 MB
AR-M550 (serv.man42) DSK Firmware October 2007 Driver / Update 13.38 MB
AR-M550 (serv.man43) DSK Firmware October 2007 (ELEM) Driver / Update 13.38 MB
AR-M550 (serv.man44) Non-Elem type firmware. u4a.04 Driver / Update 10.72 MB
AR-M550 (serv.man45) ARM550 620 700 OSA Firmware V5.51 Non ELEM Driver / Update 13.72 MB
AR-M550 (serv.man46) ARM550 620 700 OSA Firmware V5.51 ELEM Driver / Update 13.73 MB
AR-M550 (serv.man47) Firmware Oct 2006 Elem with P19 Driver / Update 13.13 MB
AR-M550 (serv.man48) Firmware Oct 2006 Non Elem with P19 Driver / Update 13.13 MB
AR-M550 (serv.man49) Firmware Update Oct 2006 elem Models Driver / Update 13.13 MB
AR-M550 (serv.man50) Firmware Update Oct 2006 Non elem Models Driver / Update 13.13 MB
AR-M550 (serv.man51) For U version models fitted with AR-P19 - Elem type firmware.(Main up to Vp4.04, Boot up to VM5.33A, PCU up to V03.11. Upgrade Utility and change details enclosed. Driver / Update 13.31 MB
AR-M550 (serv.man52) For U version models fitted with AR-P19 - Non-Elem type firmware.(Main up to Vp4.04, Boot up to VM5.33A, PCU up to V03.11. Upgrade Utility and change details enclosed. Driver / Update 13.3 MB
AR-M550 (serv.man53) For U version models (no P19 fitted) - Elem type firmware. (Main up to Vu4.04, Boot up to VM5.33A, PCU up to V03.11. Change details enclosed. Driver / Update 10.78 MB
AR-M550 (serv.man54) For U version models (no P19 fitted) - Non-Elem type firmware.(Main up to Vu4.04, Boot up to VM5.33A, PCU up to V03.11. Change details enclosed. Driver / Update 10.77 MB
AR-M550 (serv.man55) Common PC Fax Driver (v2.3.0.110) for Andromeda, Pegasus E, Tiger, Jupiter and Dragon Products. Driver / Update 16.61 MB
AR-M550 (serv.man56) ARM550 M620 M700 P19 firmware, ROM control F01 V4p.03, includes updated PCU (v03.10) and SCN (v02.10) for machine installed with ARP19. Improvement of initial low density and halftone density. Please read tech bulletins 048 and 049 (ARM550 M620), 030 and 031 (ARM700) or 007 (ARP19) for more details. Driver / Update 13.09 MB
AR-M550 (serv.man57) ARM550 M620 M700 firmware, ROM control no. F01 Vu4.03, includes updated PCU (v03.10) and SCN (v02.10), only for 'U'version machines. Improvement of initial low denity and halftone density. Please read tech bulletins 048 (ARM550 M620) or 030 (ARM700) for more details. Driver / Update 10.56 MB
AR-M550 (serv.man58) ARM550 620 700U firmware vp4a.03 when an ARP19 is installed, compatible for halftone image quality and Batch Printing. Driver / Update 13.22 MB
AR-M550 (serv.man59) ARM550 620 700U firmware vp4.03 when an ARP19 is installed, compatible for halftone image quality. Driver / Update 13.2 MB
AR-M550 (serv.man60) ARM550 620 700U firmware vu4.03 when an ARP19 is NOT installed, compatible for halftone image quality. Driver / Update 10.67 MB
AR-M550 (serv.man61) ARM550 ARM620 ARM700 Firmware Update Tool. Driver / Update 113.84 KB
AR-M550 (serv.man2) Handy Guide ARM550 620 700 Feb2005 Handy Guide 48 535.54 KB
AR-M550 (serv.man30) Commands for selection of paper input and output trays. Including Escape codes, PJL commands and Postscript commands. FAQ 66 274.11 KB
AR-M550 (serv.man31) Aid to help fault find paper misfeeds. This flash animation describes paper feed sections in all units, main body, ARF16, ARCF2, ARLC6. FAQ 1.89 MB
AR-M550 (serv.man147) ARM550 Safety Sheet Regulatory Data 2 44.61 KB
AR-M550 (serv.man148) ARM550 MSDS sheet Regulatory Data 4 29.23 KB
AR-M550 (serv.man149) AR620ND_DV MSDS (F-31221) Regulatory Data 4 29.19 KB

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