Read Sharp MX-6500N / MX-7500N (serv.man18) Service Manual online
MX-7500N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 12
TFSD_C
Toner remaining quantity sensor (C)
Piezoelectric sensor
Detects the remaining quantity of toner in the toner hopper.
TFSD_K
Toner remaining quantity sensor (K)
Piezoelectric sensor
Detects the remaining quantity of toner in the toner hopper.
TFSD_M
Toner remaining quantity sensor (M)
Piezoelectric sensor
Detects the remaining quantity of toner in the toner hopper.
TFSD_Y
Toner remaining quantity sensor (Y)
Piezoelectric sensor
Detects the remaining quantity of toner in the toner hopper.
TH_LM1
Fusing temperature sensor 1
(Fusing roller B)
(Fusing roller B)
Non-contact thermistor
Detects the center surface temperature of the fusing roller B.
TH_LM2
Fusing temperature sensor 2
(Fusing roller B)
(Fusing roller B)
Contact-type thermistor
Detects the edge surface temperature of the fusing roller B.
TH_PS
Transfer temperature thermistor
Thermistor
Detects the around temperature of the 1st transfer drive roller.(Used for
correction of color registration)
correction of color registration)
TH_UM
Main fusing temperature sensor
(Fusing belt)
(Fusing belt)
Non-contact thermistor
Detects the center surface temperature of the fusing belt.
TH_US1
Sub fusing temperature sensor
(Fusing belt)
(Fusing belt)
Non-contact thermistor
Detects the edge surface temperature of the fusing belt.
TH_US2
Fusing temperature sensor (Fusing belt)
Contact-type thermistor
Detects the edge surface temperature of the fusing belt.
TH1_LSU
LSU thermistor 1
Thermistor
Detects the temperature in the LSU. (Used for correction of distortion.)
TNDSET
Open/close detector
(Paper feed tray 1, 2)
(Paper feed tray 1, 2)
Light transmission
Detects open/close of the paper feed trays 1 and 2.
WEBEND2
Web end detector 2
Light transmission
Detects web end.
WTBSET
Waste toner bottle detector
Light transmission
Detects installation of the waste toner bottle.
WTFD
Waste toner full detector
Light transmission
Detects full of waste toner.
Signal name
Name
Type
Function/Operation
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