Lexmark Optra C710 Service Manual page 185

5016-001
J Paper size in tray x is not detected.
FRU
1 Tray 1 Rear
Paper Guide
2 Paper Size
Detect Plate
Paper Size
Detect Plate
Sprint
3 CST Cable
Paper Size
Detect Sensor
Board
Engine Board
K Paper level in tray x is not detected.
Note: When the paper in tray 1 reaches 50 or less sheets the paper
detect lever will turn on the paper detect sensor and display Load
Paper Tray 1.
FRU
1 Paper Sensor
Detect Lever
(Flag)
2 Paper Detect
Sensor
Interconnect
Board
Action
Check the rear paper guide in tray 1 for correct
installation and signs of damage to the paper size
detect flag. If the flag is broken, replace the rear
paper guide.
Check the paper size detect plate spring for signs
of looseness or if it is broken. If a problem is found,
reconnect or replace the spring.
Check the paper size detect plate for proper
operation. If incorrect, repair as necessary.
Check the continuity of the CST cable. If incorrect,
replace the cable.
Check the paper size detect sensor board for
correct operation. If incorrect, replace the sensor
board.
If the CST cable and size detect sensor board are
operating correctly, replace the engine board.
Action
Check the paper detect sensor lever (flag) in the
paper feed unit assembly for correct operation, or
if broken. Replace the lever (flag), if necessary.
Replace the following FRUs in the order shown:
1. Paper detect sensor
2. Option Interconnect board
Diagnostic Information
2-119