Service manual

QMS 3260/4032 Laser Printer - Base Engine Technical Manual 8-19
Release Version 11-97
Running Printer Diagnostics
Running an Input n+1 Test
Use this Dia
g
nostic routine run a simple check on an
y
sensor in the printer and printer options, and on the
Control Panel ke
y
s.
1. Enter Dia
g
nostic Mode
The printer is in Dia
g
nostic Mode and the LCD displa
y
s Chn-00 Fun-00.
2. Select an Input n+1 Test
(
A/D
)
from the table below.
3. Use the Control Panel ke
y
s to enter the Chain number of the test.
4. Press Function Ke
y
[
1
]
to switch the cursor from Chn and Fun.
5. Use the Control Panel ke
y
s to enter the Fun number of the test.
6. Press Function Ke
y
[
1
]
to start the Input n+1 test.
The LCD displa
y
s the
Chn
-
Fun
number of the test,
Input n+1
, and the number 0.
7. Watch the status field as
y
ou manuall
y
actuate a sensor or switch.
The number field should increment b
y
1 each time
y
ou manuall
y
actuate and deactuate the sensor or
switch. The incrementin
g
indicates that the sensor or switch is functionin
g
correctl
y
.
8. When
y
ou are finished with this test, switch off printer main power to exit Dia
g
nostic Mode.
Input n+1 Test table
Chain
(Routine)
Function
(Subroutine)
Signal from the... Comments
21
Control panel keys Increments count by 1 each time a
Control Panel key is pressed. - except
for key [2] which stops the test. This
test functions only if the Control Panel
is connected to the MCU PWB.
13 1
Printer and Options sensors
and switches
Increments count by 1 each time a
sensor or switch is manually actuated.
This test functions only if the Control
Panel is connected to the MCU PWB.
This test does not check the Control
Panel keys; see Diagnostic Routine 2-
1.
SER880X