Toshiba e-STUDIO556 Service Manual page 81

3.3.2 Sensors and switches
Symbol Name
S1-5 APS1-3, APS-C, APS-R
Automatic original
detection sensor
S1-2 APS1, APS-2
Automatic original
detection sensor
S6 HOME-SNR
Carriage home position
sensor
S7 TEMP/HUMI-SNR
Temperature/humidity
sensor
S8 WEB-SNR
Web detection sensor
S9 FUS-TR-SNR
Fuser transport sensor
S10 TNR-EMP-SNR
Toner cartridge empty
sensor
S11 USD-TNR-FLL-SNR
Toner bag full detection
sensor
S12 ATTNR-SNR
Auto-toner sensor
S13 DRUM-SUF-SNR
Drum surface potential
sensor
S14 TNR-LVL-SNR
Image quality sensor
S15 TRB-SNR2
Transfer belt release
detection sensor
S16 TRB-SNR1
Transfer belt contact
detection sensor
S17 MID-TR-SNR
Intermediate transport
sensor
S18 RGST-SNR
Registration sensor
S19 HRZ-TR-SNR1
Horizontal transport
sensor-1
S20 HRZ-TR-SNR2
Horizontal transport
sensor-2
S21 HRZ-TR-SNR3
Horizontal transport
sensor-3
S22 EXIT-SNR
Exit sensor
S23 REV-SNR1
Reverse sensor-1
S24 REV-SNR2
Reverse sensor-2
S25 SFB-COV-SNR
Bypass feed unit cover
sensor
S26 FEED-COV-SNR
Feed cover sensor
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Function
Detecting original sizes
(e-STUDIO556/656/756/856)
Detecting original sizes
(e-STUDIO557/657/757/857)
Detecting the carriage home position
Detecting the ambient temperature/
humidity of the equipment
Detecting the reeled amount of the
cleaning web
Detecting the transporting status of paper
at the fuser unit
Detecting the remaining amount of new
toner
Detecting the full status of used toner in the
toner bag
Detecting the toner density in the developer
unit
Detecting the drum surface potential at
charging
(This sensor is composed of the detection
section and the board section)
Detecting the density of toner image (test
pattern) developed on the drum surface
Detecting the releasing status of the
transfer belt
Detecting the contacting status of the
transfer belt
Detecting the paper transport between the
paper feeding system and the registration
roller
Detecting the paper transport at the
registration roller section
Detecting the paper transport at the
entrance of the horizontal transport path
Detecting the paper transport at the middle
of the horizontal transport path
Detecting the paper transport at the exit of
the horizontal transport path
Detecting paper exit
Detecting the paper transport at the upper
section of the reverse transport path
Detecting the paper transport at the lower
section of the reverse transport path
Detecting the opening/closing status of the
bypass feed unit cover
Detecting the opening/closing status of the
feed cover
3 - 35
Remarks P-I
Fig. 3-5 38-7
34-14
Fig. 3-6 38-7
34-14
Fig. 3-5 34-101
Fig. 3-8 3-34
Fig. 3-12 25-112
Fig. 3-12 25-112
Fig. 3-13 45-56
Fig. 3-14 46-17
Fig. 3-15 44-26
Fig. 3-15 5-13
Fig. 3-15 50-16
Fig. 3-15 18-2
Fig. 3-15 18-3
Fig. 3-17 17-5
Fig. 3-17 16-6
Fig. 3-17 20-23
Fig. 3-17 20-23
Fig. 3-17 20-23
Fig. 3-18 15-25
Fig. 3-18 15-14
Fig. 3-18 15-14
Fig. 3-20 29-7
Fig. 3-20 29-7
e-STUDIO556/656/756/856/557/657/757/857
OUTLINE OF THE MACHINE
3