Lexmark X548 Series, Service Manual

Page: 77 / 347

Diagnostic information
2-33
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Bin full sensor service check
3
Turn the printer on, and then verify the
following approximate values at JSP1:
Are the values approximately correct?
Replace the
autocompensator
mechanism. See
“Autocompensator
mechanism (ACM)—
standard tray removal” on
page 4-13
.
Replace the RIP board. See
“RIP board removal” on
page 4-19
.
Step Questions / actions Yes No
1
Inspect the bin full sensor located towards the
rear of the top cover assembly.
Is the bin full sensor dislodged or
damaged?
Repair or replace the bin full
sensor. See
“Bin full
sensor removal” on
page 4-16
.
Go to step 2.
2
With the scanner assembly in the down
position, perform the standard bin sensor base
sensor test. See
“BASE SENSOR TEST” on
page 3-20
. Toggle the bin full flag attached to
the rear shaft of the redrive unit.
Does the flag rotate freely and interrupt the
sensor beam when in normal position?
Go to step 3. Reposition or replace the
flag. If the flag is broken,
replace the bin full flag.
See
“Bin full flag removal”
on page 4-99
.
3
Turn the printer off, and remove the rear
shield. See
“Rear shield removal” on
page 4-7
. Turn the printer on, and then check
the values below at JBIN1:
Are the values correct?
Problem resolved. Replace the RIP board. See
“RIP board removal” on
page 4-19
.
Step Questions / actions Yes No
JSP1
Pin Value
2 +24 V dc
4 +24 V dc
5 +5V (when paper is picked)
7 Ground
8 Ground
10 +5 V dc
12 -5 V dc (when paper is picked)
15
+5 V dc
16 Ground
JBIN1
Pin Value
1 > 0 V dc, +5V dc during
cycle
2 +3.3 V dc beam blocked
0 V dc unblocked
3 Ground