Справочник Пользователя для HP color laserjet 4500
EN
Diagnostics mode
67
2
Door sensor test
The door sensor test allows service personnel to open and close doors
on the printer while watching the sensor status on the front panel.
Switches 4 and 5 are in series with each other, which causes the value
to toggle under identifier A.
on the printer while watching the sensor status on the front panel.
Switches 4 and 5 are in series with each other, which causes the value
to toggle under identifier A.
Once the door sensor test is initiated, the front panel displays the status
for each sensor listed in the table below. As a door is opened and
closed, the state of the sensor changes the indicator values on the front
panel.
for each sensor listed in the table below. As a door is opened and
closed, the state of the sensor changes the indicator values on the front
panel.
* Activates (A) when opened.
1
Press the
I
TEM
key until
ENGINE DIAGS DOOR SENSORS
is displayed
on the front panel.
2
Press the
S
ELECT
key to activate the test.
The front panel displays A through F with a binary value below it. All the
doors and drawers should be closed. In this state, the display will show
all
doors and drawers should be closed. In this state, the display will show
all
0
’s. Open the doors and drawers one at a time to verify correct
functionality. If operating correctly, the
0
will change to a
1
. If a
1
is
displayed with all doors and drawers closed, there is a bad switch or
connection.
connection.
Sensor status
Identifier Name
Description
A
SW4 and
SW5
SW5
Front and rear door switches.
B
SW1 *
ITB drawer switch.
C
SW2 *
Toner cartridge door *.
D
SW3 *
Drum drawer switch *.
E
Drum detect Detect if a drum cartridge is installed.
F
Fuser
Detects if fuser is installed. Changes the
state of the sensor if not detected or removed
when rear door is opened and closed.
state of the sensor if not detected or removed
when rear door is opened and closed.