Lexmark X548 Series Service Manual

Diagnostic information 2-55
7525-63x
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Toner meter cycle (TMC) card service check
Toner sensors (Y, C, M, K) on TMC card service check
Step Questions / actions Yes No
1 Perform the Base Sensor Test:
1. Enter the Diagnostics Menu (Turn off the
printer, press and hold 3 and 6, turn on the
printer, and release the buttons when the
progress bar appears).
2. Navigate to Base Sensor Test.
3. Select the sensor to test.
4. Open the toner door, remove the
corresponding toner cartridge.
5. Note whether the operator panel shows a
change in state.
Note: If the reflective disk is not showing
on the cartridge, rotate the gear clockwise
to expose the reflective surface.
For additional information about the Base
Sensor Test, see “BASE SENSOR TEST” on
page 3-20.
Does the operator panel display a change
of state?
Replace the toner cartridge. Replace the toner meter
cycle (TMC) card. See
“Toner meter cycle (TMC)
card removal” on
page 4-66.
Step Questions / actions Yes No
1 Remove the toner cartridge, and inspect the
lenses on the toner meter cycle (TMC) card.
Are the lenses blocked, damaged, or dirty?
Repair or replace the TMC
card. See “Toner meter
cycle (TMC) card removal”
on page 4-66.
Go to step 2.
2
Turn off the printer, and remove the rear
shield. See “Rear shield removal” on
page 4-7. Disconnect the cable at the JSP1
connector on the RIP board. Turn the printer
on, and measure the voltages below:
Are any of the voltage values incorrect?
Replace the RIP board. See
“RIP board removal” on
page 4-19.
Replace the TMC card. See
“Toner meter cycle (TMC)
card removal” on
page 4-66.
JSP1
Pin Voltage
1 Ground
2 +3.3 V dc
3 +3.3 V dc
4 +3.3 V dc
5 +3.3 V dc
6 +0.0 V dc

Lexmark X548 Series Specifications

General

Brand	Lexmark
Model	X548 Series
Category	All in One Printer
Language	English