Epson AcuLaser C8500, Service Manual

Page: 295 / 570

EPSON AcuLaser C8500 Revision C
Chapter 4 Diagnostics 4-27
OPT_DUP
_READY
83 Option Duplex Check by switching
between connected and
disconnected states at
the connector (P/J134)
of Option Duplex unit
and the printer.
DUPLEX READY
Signal : High
RH_DOOR_SW 84 TURN CHUTE
SWITCH Checking by opening
and closing the TURN
CHUTE UP ASSY.
TURN CHUTE
SWITCH ON Signal :
High
FAN_FUSER1
_ALARM
85 FUSER FAN-1 Check by using FUSER
FAN-1 to switch between
bound and unbound
states.
ALARM Signal : High
FAN_FUSER3
_ALARM
86 EXIT CHUTE FAN Check by using EXIT
CHUTE FAN to switch
between bound and
unbound states.
ALARM Signal : High
FAN_REAR
_ALARM
87 DEVE. FAN Check by using DEVE.
FAN to switch between
bound and unbound
states.
ALARM Signal : High
OPT_DUP
_INVERT_IN
_SNR
90 INVERTER SENSOR Check by using the
Actuator to switch
between light passed
and light blocked states
at the Sensor.
INVERT PAPER
SENSE Signal : High
OPT_DUP
_ALN_SNR
91 ALIGNER SENSOR Check by using paper to
switch between light
present and light absent
states at the Sensor.
ALIGNER IN 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]
OPT_DUP
_OUT_SNR
92 ALIGNER OUT
SENSOR Check by using paper to
switch between light
present and light absent
states at the Sensor.
ALIGNER OUT
PAPER SENSE
Signal : High
OPT_DUP
_DOOR_SW
93 CAB SWITCH-I/L Checking by opening
and closing the
INVERTER CHUTE.
INVERTER CHUTE
SWITCH ON Signal :
High
OPT_DUP
_TRAY_SW
94 ALIGNER ASSY Checking by opening
and closing the
ALIGNER ASSY.
ALIGNER SENSE
Signal : High
OPT_DUP_24V 95 24V to Option Duplex Checking by opening
and closing the FRONT
COVER ASSY.
(Even MSI/REGI HIGH
ASSY or FUSER ASSY
is acceptable.)
24VDC(between
LVPS and Option
Duplex) : High
OPT_DUP
_MOT_FAIL
96 INVERTER MOTOR After checking by
switching between
connected and
disconnected states at
the INVERTER MOTOR
connector(P/J147),
check by turning
ON[LOW] the
INVERTER MOTOR ON
signal at Digital Output
Test[A0].
INVERTER MOTOR
FAIL Signal : High
OPT_FEEDER1
_NEAR_END
_SW
A0 LOW PAPER
SENSOR-2T
SENSOR
(Cassette 2)
Check by increasing and
decreasing the amount
of paper in Cassette 2 to
switch between detected
and not detected states
at the Sensor.
[2]LOW 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]