Canon CLC 1120 Service Handbook page 103

REF-C
SGNL-Y
SGNL-M
SGNL-C
PT-REF-Y
PT-REF-M
PT-REF-C
PT-REF-K
PT-SIG-Y
PT-SIG-M
PT-SIG-C
PT-SIG-K
PT-SIG-D
PT-REF-D
DMAX70-Y
DMAX70-M
DMAX70-C
DMAX70-K
SENSOR SC-HP
ITOP-A
ITOP-B
WEB
W-TONER
CHAPTER 4 SERVICE MODE
measurement of the concentration reference signal
inside the C developing assembly (present value;
direct light from LED)
measurement of the present Y developer
concentration (present value)
measurement of the present M developer
concentration (present value)
measurement of the present C developer
concentration (present value)
concentration reference signal for Y toner on the
photosensitive drum
concentration reference signal for M toner on the
photosensitive drum
concentration reference signal for C toner on the
photosensitive drum
concentration reference signal for Bk toner on the
photosensitive drum
concentration signal of Y toner on the photosensitive
drum (present value)
concentration signal of M toner on the photosensitive
drum (present value)
concentration signal of C toner on the photosensitive
drum (present value)
concentration signal of Bk toner on the
photosensitive drum (present value)
reflection intensity signal of the photosensitive drum
surface (present value)
reflection intensity reference signal of the
photosensitive drum surface
solid concentration of Y at laser pulse width 70%
during auto gradation correction
solid concentration of M at laser pulse width 70%
during auto gradation correction
solid concentration of C at laser pulse width 70%
during auto gradation correction
solid concentration of Bk at laser pulse width 70%
during auto gradation correction
output of the original scanner HP sensor (PS1)
output of the side A sensor (PS2)
output of the side B sensor (PS3)
fixing cleaning belt is absent
waste toner case is full
4-17