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10.2 Electric Parts Layout
[A] Scanner unit, control panel
S5
S4
M30
CCD
M1
SLG
S6
SW1
S7
EXP
M32
INV
LT series models
S5
S4
S2
S3
S2
S1
S3
[E] Laser unit
SNS
M16
M15
M29
M14
LDR-Y
M13
[I] Automatic duplexing unit, bypass feed unit
SW7
S38
S39
S41
S40
SFB
SOL1
CLT8
Motors
Wire harness
Symbol
Name
Figure
location
SCAN-MOT
M1
[A]
3-H
Scan motor
TNR-MOT-Y
M2
[B]
5-A
Toner motor-Y
TNR-MOT-M
M3
[B]
5-B
Toner motor-M
TNR-MOT-C
M4
[B]
5-B
Toner motor-C
TNR-MOT-K
M5
[B]
5-B
Toner motor-K
USD-TNR-MOT
M6
[B]
6-C
Waste toner paddle motor
TBU-MOT
M7
[C]
6-B / 7-B
Transfer belt motor
TR1-CAM-MOT
M8
[C]
7-D
1st transfer roller cam motor
DEV-MOT
M9
[D]
7-D
Developer unit motor
DRM-MOT
M10
[D]
6-B / 7-B
Drum motor
DRM-SW-MOT
M11
[D]
7-D
Drum switching motor
SHUT-MOT
M12
[D]
6-D
Shutter motor
POL-MOT
M13
[E]
5-C
Polygonal motor
MIR-MOT-M
M14
[E]
5-B
Mirror motor-M
MIR-MOT-C
M15
[E]
5-C
Mirror motor-C
MIR-MOT-K
M16
[E]
5-D
Mirror motor-K
FUS-MOT
M17
[F]
6-D
Fuser motor
EXIT-MOT
M18
[F]
6-A / 7-A
Exit motor
RGST-MOT
M19
[G]
6-B / 7-B
Registration motor
FEED/TRNS-MOT
M20
[H]
7-E
Feed/transport motor
CST-TRY-MOT
M21
[H]
8-E
Tray-up motor
ADU-MOT
M22
[I]
8-A
ADU motor
INTRNL-FAN-MOT
M23
[B]
6-G
Internal cooling fan
OZN-FAN-MOT
M24
[D]
7-C
Ozone exhaust fan
FUS/EXIT-FAN-MOT
M25
[F]
6-F
Fuser/exit section cooling fan
SYS-FAN-MOT
M26
[J]
2-G
SYS board cooling fan
PS-FAN-MOT-1
M27
[J]
2-H
Switching regulator cooling fan-1
PS-FAN-MOT-2
M28
[J]
2-H
Switching regulator cooling fan-2
LSU-FAN-MOT
M29
[E]
7-C
Laser unit cooling fan
SCAN-FAN-MOT
M30
[A]
3-H
Scanner unit cooling fan
UT-CARRY-MOT
M31
[B]
7-C
Waste toner transport motor
FANFRONT
M32
[B]
3-E
Exposure lamp cooling fan
EPU-FAN
M33
[D]
6-G
EPU cooling fan
[B] Toner cartridge, waste toner box
M23
KEY
TCP
K
DSP
C
Y: M2
M
M: M3
Y
C: M4
K: M5
P-INV
Y: S8
M: S9
C: S10
K: S11
S14
M6
S13
SW8
S42
[F] Fuser unit
M25
M18
M17
LDR-M
LDR-K
THMO2
THMP2
THMO1
LDR-C
THMP1
[J] PC board, power supply
IMG
M22
RAM-S
SYS
CLT7
HDD
ADU
HVT
BRK1
Sensors and Switches
Wire harness
Symbol
Name
Figure
location
APS1-3, APS-C, APS-R
3-E
S1-5
[A]
Automatic original detection sensor
3-F
* S1: only for A4 series models
HOME-SNR
S6
[A]
3-E
Carriage home position sensor
PLTN-SNR
S7
[A]
3-E
Platen sensor
TNR-SNR-Y
S8
[B]
5-B
Toner cartridge detection sensor-Y
TNR-SNR-M
S9
[B]
5-B
Toner cartridge detection sensor-M
TNR-SNR-C
S10
[B]
5-B
Toner cartridge detection sensor-C
TNR-SNR-K
S11
[B]
5-B
Toner cartridge detection sensor-K
TEMP/HUMI-SNR
S12
[B]
7-C
Temperature/humidity sensor
USD-TNR-FLL-SNR
S13
[B]
6-C
Waste toner box full detection sensor
USD-TNR-LCK-SNR
S14
Waste toner paddle motor lock detection
[B]
6-C
sensor
TR1-SNR
S15
[C]
7-D
1st transfer roller status detection sensor
IMG-POS-SNR-F
S16
[C]
7-B
Image position aligning sensor (Front)
IMG-POS-SNR-R
S17
[C]
7-B
Image position aligning sensor (Rear)
TNR-LVL-SNR
S18
[C]
7-A
Image quality sensor
DRM-SW-SNR
S19
[D]
7-E
Drum switching detection sensor
SHUT-SNR
S20
[D]
6-D
Shutter status detection sensor
CH-CLN-SNR
S21
[D]
6-C
Needle electrode cleaner detection sensor
ATTNR-SNR-Y
S22
[D]
7-F
Auto-toner sensor-Y
ATTNR-SNR-M
S23
[D]
7-F
Auto-toner sensor-M
ATTNR-SNR-C
S24
[D]
7-G
Auto-toner sensor-C
ATTNR-SNR-K
S25
[D]
7-F
Auto-toner sensor-K
EXIT-SNR
S26
[F]
7-H
Exit sensor
CLNG-SNR
S27
[G]
7-B
Paper clinging detection sensor
RGST-SNR
S28
[G]
7-B
Registration sensor
TR2-SNR
S29
[G]
7-B
2nd transfer roller position detection sensor
CST1-FEED-SNR
S30
[H]
7-C
1st drawer feed sensor
CST1-TRY-SNR
S31
[H]
8-C
1st drawer tray-up sensor
CST1-EMP-SNR
S32
[H]
8-C
1st drawer empty sensor
CST1-NEMP-SNR
S33
[H]
8-D
1st drawer paper stock sensor
CST2-FEED-SNR
S34
[H]
8-E
2nd drawer feed sensor
CST2-TRY-SNR
S35
[H]
8-D
2nd drawer tray-up sensor
CST2-EMP-SNR
S36
[H]
8-D
2nd drawer empty sensor
CST2-NEMP-SNR
S37
[H]
8-E
2nd drawer paper stock sensor
ADU-U-SNR
S38
[I]
8-A
ADU entrance sensor
ADU-L-SNR
S39
[I]
8-A
ADU exit sensor
SFB-SNR
S40
[I]
8-B
Bypass paper sensor
[C] Transfer belt unit
M7
S12
S17
M31
SOL2
[G] Transfer unit
THM5
SW2
S26
M19
THM4
THMO3
LAMP3
THM3
LAMP1
LAMP2
LAMP4
[K] Damp heater
DH1
THMO4
LGC
RAM-L
THMO5
DH3
PS
M28
M27
M26
DH5
FIL
Wire harness
Symbol
Name
Figure
location
SFB-FEED-SNR
S41
[I]
8-C
Bypass feed sensor
TNTRLK
S42
[B]
6-D
Auger lock detection sensor
DRM-SNR
S43
[D]
7-E
Color drum phase sensor
DRM-SNR2
S44
[D]
7-E
K drum phase sensor
MAIN-SW
SW1
[A]
AC Wire Harness
Main switch
COV-INTLCK-SW
SW2
[G]
AC Wire Harness
Cover interlock switch
TR-COV-SW
SW3
[G]
8-C
Transfer cover switch
SIDE-COV-SW
SW4
[H]
8-E
Side cover switch
CST1-SW
SW5
[H]
8-D
1st drawer detection switch
CST2-SW
SW6
[H]
8-D
2nd drawer detection switch
ADU-SET-SW
SW7
[I]
8-B
ADU opening/closing switch
UTN-COVER
SW8
[B]
6-C
Waste toner cover open/close detection switch
Electromagnetic spring clutches
Wire harness
Symbol
Name
Figure
location
CST1-TR-H-CLT
CLT1
[H]
7-C
1st drawer transport clutch (High speed)
CST1-TR-L-CLT
CLT2
[H]
7-C
1st drawer transport clutch (Low speed)
CST1-FEED-CLT
CLT3
[H]
8-C
1st drawer feed clutch
CST2-TR-L-CLT
CLT4
[H]
8-D
2nd drawer transport clutch (Low speed)
CST2-TR-H-CLT
CLT5
[H]
8-D
2nd drawer transport clutch (High speed)
CST2-FEED-CLT
CLT6
[H]
8-D
2nd drawer feed clutch
ADU-CLT
CLT7
[I]
8-B
ADU clutch
SFB-FEED-CLT
CLT8
[I]
8-B
Bypass feed clutch
Solenoids
Wire harness
Symbol
Name
Figure
location
SFB-SOL
SOL1
[I]
8-B
Bypass pickup solenoid
SNR-SHUT-SOL
SOL2
[C]
7-B
Sensor shutter solenoid
10-2
[D] Developer unit
S15
M24
M33
Y: ERS-Y
M: ERS-M
C: ERS-C
K: ERS-K
Y: S22
M: S23
C: S24
K: S25
S16
M8
S18
[H] Paper feeding unit
SW3
S27
S33
SW5
M21
S37
SW6
S28
S29
DH2
THMO6
DH4
PC boards
Wire harness
Symbol
Name
Figure
location
PWA-F-CCD
CCD
[A]
4-F
CCD driving PC board (CCD board)
PWA-F-SLG
SLG
[A]
4-G
Scanning section control PC board (SLG board)
INV
INV
[A]
3-H
Lamp inverter board
PWA-F-DSP
DSP
[A]
1-B
Display PC board (DSP board)
PWA-F-KEY
KEY
[A]
1-C
Key PC board (KEY board)
P-INV
P-INV
[A]
1-A
Panel inverter board
PWA-F-LDR-Y
LDR-Y
[E]
5-E
Laser driving PC board-Y (LDR-Y board)
PWA-F-LDR-M
LDR-M
[E]
5-D
Laser driving PC board-M (LDR-M board)
PWA-F-LDR-C
LDR-C
[E]
5-E
Laser driving PC board-C (LDR-C board)
PWA-F-LDR-K
LDR-K
[E]
5-D
Laser driving PC board-K (LDR-K board)
PWA-F-SNS
SNS
[E]
5-D
H-sync detection PC board (SNS board)
PWA-F-ADU
ADU
[I]
8-A
ADU control PC board (ADU board)
PWA-F-SFB
SFB
[I]
8-B
Paper width detection PC board (SFB board)
PWA-F-SYS
SYS
[J]
3-A
System control PC board (SYS board)
PWA-F-LGC
LGC
[J]
6-A
Logic PC board (LGC board)
PWA-F-IMG
IMG
[J]
4-D
Image processing PC board (IMG board)
PWA-F-FIL
FIL
[J]
3-G
Filter PC board (FIL board)
PWA-F-SRAM-S
RAM-S
[J]
3-A
SRAM board <for SYS board>
PWA-F-SRAM-L
RAM-L
[J]
5-A
SRAM board <for LGC board>
Lamps and heaters
Wire harness
Symbol
Name
Figure
location
LP-EXPO
EXP
[A]
3-H
Exposure lamp
LP-ERS-Y
ERS-Y
[D]
5-B
Discharge LED-Y
LP-ERS-M
ERS-M
[D]
5-B
Discharge LED-M
LP-ERS-C
ERS-C
[D]
5-B
Discharge LED-C
LP-ERS-K
ERS-K
[D]
5-B
Discharge LED-K
LP-HTR-C
LAMP1
[F]
AC Wire Harness
Center heater lamp
LP-HTR-S
LAMP2
[F]
AC Wire Harness
Side heater lamp
LP-PR
LAMP3
[F]
AC Wire Harness
Pressure roller lamp
LAMP-TRIPLE
LAMP4
[F]
AC Wire Harness
Sub heater lamp
SCN-DH-L
DH1
[K]
AC Wire Harness
Scanner damp heater (Left)
SCN-DH-R
DH2
[K]
AC Wire Harness
Scanner damp heater (Right)
DRM-DH-L
DH3
[K]
AC Wire Harness
Drum damp heater (Left)
DRM-DH-R
DH4
[K]
AC Wire Harness
Drum damp heater (Right)
CST-DH-R
DH5
[K]
AC Wire Harness
Drawer damp heater
* Only for JPD models
M11
S19
S44
M10
S43
M9
S20
M12
K
C
M
Y
S21
THM2
THM1
CLT1
CLT2
M20
CLT3
CLT4
S30
SW4
S34
S31
S32
S35
S36
CLT6
CLT5
Thermistors and thermostats
Wire harness
Symbol
Name
Figure
location
THMS-DRM-Y
THM1
[D]
7-F
Drum thermistor-Y
THMS-DRM-K
THM2
[D]
7-F
Drum thermistor-K
THMS-FBLT-F
6-F / 6-H / 7-H
THM3
[F]
Fuser belt front thermistor
AC WIre harness
THMS-PR-C
6-F / 6-G / 7-G
THM4
[F]
Pressure roller center thermistor
AC WIre harness
THMS-PR-R
6-E / 6-G / 7-G
THM5
[F]
Pressure roller rear thermistor
AC WIre harness
THMP-FBLT-C
6-F / 6-G / 7-G
THMP1
[F]
Fuser belt center thermopile
AC WIre harness
THMP-FBLT-R
6-F / 6-H / 7-H
THMP2
[F]
Fuser belt rear thermopile
AC WIre harness
THERMO-FBLT-C
THMO1
[F]
AC WIre harness
Fuser belt center thermostat
THERMO-FBLT-S
THMO2
[F]
AC WIre harness
Fuser belt rear thermostat
THERMO-PR
THMO3
[F]
AC WIre harness
Pressure roller thermostat
THERMO-SCN-DH
THMO4
[K]
AC WIre harness
Scanner damp heater thermostat
THERMO-DRM-DH-L
THMO5
[K]
AC WIre harness
Drum damp heater thermostat (Left)
THERMO-DRM-DH-R
THMO6
[K]
AC WIre harness
Drum damp heater thermostat (Right)
Transformer
Wire harness
Symbol
Name
Figure
location
PS-HVT
HVT
[J]
8-G
High-voltage transformer
Others
Wire harness
Symbol
Name
Figure
location
TCP
TCP
[A]
1-B
Touch panel
FUSE-FUS
FS1
[F]
6-F
Fuser unit fuse
HDD
HDD
[J]
3-E
Hard disk
PS-ACC
PS
[J]
4-H
Switching regulator
BRK
BRK
[J]
AC WIre harness
Breaker
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