Sharp AR-651 (serv.man6) Service Manual ▷ View online
AR-651/810 COMPONENT LAYOUT & FUNCTIONS 2 - 21
Symbol
Name
Function
Remarks
(3) Electromagnetic spring clutches
CLT1
TR-DRV-CLT
Driving of the reversed paper
[D]
Duplex paper transport driving clutch
transport section
CLT2
REV-TR1-CLT
Reversed paper transporting
[D]
Duplex paper transport clutch 1
CLT3
REV-TR2-CLT
Reversed paper transporting
[D]
Duplex paper transport clutch 2
CLT4
MDL-TR-CLT
Paper transporting
(F-2)
Intermediate transport clutch
CLT5
SFB-FEED-CLT
Driving of the bypass pickup roller
(F-2)
Bypass feed clutch
CLT6
CST1-TR-CLT
1st cassette paper transporting
(F-2)
1st cassette transport clutch
CLT7
CST1-FED-CLT
Driving of 1st cassette pickup roller
(F-2)
1st cassette feed clutch
CLT8
CST2-TR-CLT
2nd cassette paper transporting
(F-2)
2nd cassette transport clutch
CLT9
CST2-FED-CLT
Driving of 2nd cassette pickup roller
(F-2)
2nd cassette feed clutch
CLT10
LCF-TR-CLT
Tandem LCF paper transporting
(F-2)
Tandem LCF transport clutch
CLT11
LCF-FED-CLT
Driving of the tandem LCF pickup
(F-2)
Tandem LCF feed clutch
roller
Symbol
Name
Function
Remarks
(4) PC boards
SLG
PWA-F-SLG
Control of the scanning section and
(B-3)
Scanning section control PC board (SLG board) image processing
CCD
PWA-F-CCD
Preprocessing control of the CCD
(B-3)
CCD driving PC board (CCD board)
image data
SYS
PWA-F-SYS
Control of the whole copier
(F-4)
System PC board (SYS board)
Data processing
LGC
PWA-F-LGC
Control of the whole copier
(F-4)
Logic PC board (LGC board)
LDR1
PWA-F-LDR1
Driving of the laser diode #1
[C]
Laser driving PC board 1 (LDR board 1)
LDR2
PWA-F-LDR2
Driving of the laser diode #2
[C]
Laser driving PC board 2 (LDR board 2)
SNS
PWA-F-SNS
Detection of the laser beam position
[C]
H-Sync detection PC board
IH
PS-IH
Control of the fuser unit IH coil
[E]
IH control board
FUSE
PWA-F-FUS
Cutting of the electric current to the
[D]
Fuse PC board
damp heater
AR-651/810 COMPONENT LAYOUT & FUNCTIONS 2 - 22
SOL1
SFB-SOL
Driving of the bypass pickup roller
(F-2)
Bypass pickup solenoid
SOL2
GATE-SOL
Switching of the gate at the reverse
(F-2)
Gate solenoid
section
SOL3
SEP-FING-SOL
Driving of the drum separation finger
(F-2)
Drum separation finger solenoid
SOL4
END-F-SOL
Moving of the lever to detect the
(F-2)
End fence solenoid
paper mis-stacking at the standby
side tray
SOL5
LCF-PICK-SOL
Driving of the Tandem LCF pickup
(F-2)
Tandem LCF pickup solenoid
roller
MOT
PWA-F-MOT
Driving of the drum motor and
(F-4)
Motor driving PC board
transfer belt motor
MOT2
PWA-F-MOT2
Driving of the reverse motor
(F-4)
Motor driving PC board 2
PLG
PWA-F-PLG
Control of the printing section and
[C]
Laser control PC board (PLG board)
image processing
Symbol
Name
Function
Remarks
Symbol
Name
Function
Remarks
HVT
PS-HVT
Generating of the voltages for the
(F-4)
High-voltage transformer
followings:
• main charger wire
• main charger grid
• developer bias
• drum cleaning brush
• main charger grid
• developer bias
• drum cleaning brush
• transfer belt
• transfer belt cleaning brush
(7) Transformer
Symbol
Name
Function
Remarks
(5) Heaters and lamps
EXP
LP-EXPO
Exposing of original to the light
(B-1)
Exposure lamp
DHR
DNP-HTR-R
Preventing of the condensation in the
(B-4)
Scanner damp heater (R)
scanning section (for mirrors)
DHL
DNP-HTR-L
Preventing of the condensation in the
(B-4)
Scanner damp heater (L)
scanning section (for lens)
DHT
D-HTR
Keeping of the drum warm
[D]
Transfer belt unit damp heater
IHCOIL
IH-COIL
Heating up of the fuser roller
[E]
IH coil
Symbol
Name
Function
Remarks
(6) Solenoid
AR-651/810 COMPONENT LAYOUT & FUNCTIONS 2 - 23
INV
INV-EXP
Control of the exposure lamp
(B-3)
Lamp inverter
HDD
HDD
Storing of the image data
(F-4)
Hard disk
GLV
MIR-GLV
Control of the laser vertical position
[C]
Galvanometer mirror
PS
PS-ACC
DC power supply
(F-5)
Switching power supply
THMO1
THERMO-C-HTR
Preventing of the fuser unit
[E]
Center thermostat
over-heating
THMO2
THERMO-S-HTR
Preventing of the fuser unit
[E]
Side thermostat
over-heating
THMO3
THERMO-DAMP-HTR
Preventing of the dump heater
[D]
Dump heater thermostat
over-heating
THMO4
THERMO-EXP
Preventing of the dump heater
(B-4)
Expousre lamp thermostat
over-heating in scanner section
THM1
THMS-S-HTR
Detection of the surface temperature
[E]
Fuser roller side thermistor (front)
at the hot roller edges/Abnormal
detection
THM2
THMS-HTR
Detection of the surface temperature
[E]
Fuser roller center thermistor
at the hot roller center
THM3
THMS-S-HTR
Detection of the surface temperature
[E]
Fuser roller side thermistor (rear)
at the hot roller edges
THM4
THMS-DRM
Detection of the drum surface
(F-5)
Drum thermistor
THM5
THMS-L-HTR
Detection of the surface temperature
[E]
Pressure roller thermistor
of the pressure roller
NF1
NOIZ-FILTER1
Electrical noize reduction
(F-5)
Noise filter 1
BRK1
BREAKER1
Safety switch
(F-5)
Breaker 1
ERS
CD-ERS
Removing of the residual charge
(F-5)
Discharge lamp
from the drum surface
Symbol
Name
Function
Remarks
(8) Others
AR-651/810 COMPONENT LAYOUT & FUNCTIONS 2 - 24
2. 4. Symbols and Functions of RADF Various Components
(1) Motors
RMOT
RMOT
·Driving of the transport roller
Stepping motor
Read motor
SMOT
SMOT
·Driving of the small original exit roller Stepping motor
Small original exit motor
and small original reverse roller
TLMOT
UDMOT
·Driving of the tray lift motor
Stepping motor
Tray lift motor
FMOT
FMOT
·Driving of the feed roller, pickup roller
Stepping motor
Feed motor
and registration roller
LMOT
LMOT
·Driving of the large original exit roller Stepping motor
Large original exit motor
and large original reverse roller
Symbol
Name
Function
Remarks
(2) Solenoids
Symbol
Name
Function
Remarks
ESSOL
ESSOL
·Disengagement of the large original
DC solenoid
Disengagement solenoid exit roller
LSOL
LSOL
·Switching of the large original exit
DC solenoid
Large original exit solenoid flapper
SSOL
SSOL
·Switching of the small original exit
DC solenoid
Small original exit solenoid flapper and reverse flapper
(3) PC boards
Symbol
Name
Function
Remarks
DFLG
PWA-F-ADF
·Control of the ADF
ADF PC control board
(ADF board)
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