Epson AcuLaser C8500, Service Manual

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EPSON AcuLaser C8500 Revision C
Chapter 4 Diagnostics 4-25
MSI_PITCH
_SNR
2B PITCH SENSOR Check by using paper to
switch between light
present and light absent
states at the Sensor.
MSI PITCH PAPER
SENSE Signal : High
BOTTOM
_UP_SNR
2C LEVEL SENSOR Check by using the
NUDGER SUPPORT
ASSY to sw itch between light
passed and light blocked states
at the Sensor.
MSI LEVEL SENSE
Signal : High
NSRDY 35 CONTROLLER PWB -
/SRDY Signal : High
NPAGE 3B CONTROLLER PWB -
/PAGE Signal : High
TR0_SNR 42 TR0 SENSOR C heck by using TR 0 m ark of
IBT BELT ASSY to sw itch
between light present and
light absent states at the
S ensor.
TR0-M SENSE Signal
: High
ROTARY
_HOME_SNR
43 ROTARY SENSOR Check by using the ROTARY
FRAME ASSY to switch
betw een light passed and light
blocked states at the Sensor.
ROTARY SENSE
Signal : High
FUSER_EXIT
_SNR2
4B FUSER EXIT
SENSOR-2 Check by using the FUSER
EXIT ACTUATOR-2 to
switch betw een light passed
and light blocked states at the
Sensor.
FUSER EXIT-2
PAPER SENSE
Signal : High
NSOS 50 ROS ASSY -
nSOS Signal : High
TONER
_FULL_SNR
51 WASTE TONAER
SENSOR Check by using paper to
switch between light
present and light absent
states at the Sensor.
WASTE TONAER
SENSE Signal : High
Table 4-8. Digital Input Test Device Code
Digital Input Test [DIAGSTART : [90 02 XX] , DIAGSTOP : [91 02 XX] ]
Name
Code Function Item
Check Method (Hex)
When status data is
[High]
WASTE
_TONER_BOX
52 TONER BOX
SENSOR Check by using the
Actuator to switch
between light passed
and light blocked states
at the Sensor.
TONER BOX SENSE
Signal : High
MCU_CHECK 53 Not used -
TEST_PIN 54 Dip-Switch(S1) of
MCU PWB Checking by switching
between ON/OFF at the
MCU PWB Dip-Switch.
TEST PRINT ON
Signal : High
PAP_EMPTY
_SNR_1
60 TRAY N/P SENSOR
ASSY (Cassette 1) Check by using the
Actuator to switch
between light passed
and light blocked states
at the Sensor.
[1]TRAY PAPER
SENSE Signal : High
NEAR
_EMPTY_SW
61 LOW PAPER
SENSOR (Cassette
1) Check by increasing and
decreasing the amount
of paper in Cassette 1 to
switch between detected
and not detected states
at the Sensor.
[1]LOW PAPER
SENSE Signal : High
FUSER
_UNIT_SW
62 FUSER ASSY Checking by opening
and closing the FUSER
ASSY
FUSER ASSY
SENSE Signal : High
OIL_ROLL_SW 63 Not used -
OIL_LIFE_SW 64 Not used -
MSI_PAP2_SNR 65 Not used -
MSI_PAP_SNR 66 EMPTY SENSOR C heck by using the MSI N/P
ACTUATOR to sw itch
between light passed and light
blocked states at the Sensor.
MSI PAPER SENSE
Signal : High
Table 4-8. Digital Input Test Device Code
Digital Input Test [DIAGSTART : [90 02 XX] , DIAGSTOP : [91 02 XX] ]
Name
Code Function Item
Check Method (Hex)
When status data is
[High]