HP LaserJet Enterprise M552 - Page 185

Table 2-14 Component test details
Component test Item tested Replacement part number Comments
Drum motors M1
M2
M3
RM2-0078-000CN Activates the specied motor.
Fuser drive assembly M4 RM2-0091-000CN (M553n)
RM2-0009-000CN (M552dn, M553dn, M553x,
M577)
Activates the specied motor.
Fuser pressure release
motor
M6 RK2-6027-000CN Activates the specied motor.
Tray 2 pickup motor M5 RM2-0008-000CN
Pickup drive assembly
Activates the specied motor.
Tray 3 pickup motor
1
M20 RM2-5145-000CN
Paper feed assembly
Activates the specied motor.
Duplexer pickup motor M8 RM2-0006-000CN (M552dn, M553dn, M553x,
M577)
Duplex drive assembly
Activates the specied motor.
Tray 1 pickup solenoid SL2 RM2-0017-000CN
Paper pickup assembly
Activates the specied solenoid.
Tray 2 pickup solenoid SL1 RM2-0090-000CN (M553n)
RM2-0022-000CN (M552dn, M553dn, M553x,
M577)
Tray 1 roller alienation (part of secondary
transfer assembly)
Activates the specied solenoid.
Tray 3-X pickup solenoid Not applicable RM2-5154-000CN
Paper pickup assembly
Activates the specied solenoid.
Duplex switchback
solenoid
SL3 RM2-0006-000CN (M552dn, M553dn, M553x,
M577)
Duplex drive assembly
Activates the specied solenoid.
Feed roller clutch CL1 RM2-0010-000CN
Lifter drive assembly
Activates the specied clutch.
Laser Scanner motor M7 RM2-6545-000CN
Laser/scanner assembly
Activates the specied motor.
Repeat Not applicable Not applicable Choose O to execute the test once.
Choose On to execute the test continuously.
1
Only appears if optional accessories are installed.
ENWW Tools for troubleshooting 157