Lexmark X73 4402-001 - Manual (Page 23)

Diagnostic Information 2-9
4402-001
Gear Train Assembly Service Check
CCD will not move or scan.
FRU Action
1 Gear Train Assembly Disconnect J5 and check the reading
at pin 1 and 3 for approximately
225.5 ohms. If the reading is
incorrect, replace the gear train
assembly. Go to the
“Gear Train
Assembly Removal” on page 4-6 .
If the reading is correct, check at
pins 1 through 6 for approximately
28 volts, with the machine turned on.
If the voltage is incorrect, replace the
system board. Go to the
“System
Board Removal” on page 4-12 .
Note: Ensure scanner is unlocked.
2 Scanner Belt Check the belt for proper installation.
If the belt is damaged, replace. Go to
the
“Belt/Idler Pulley Assembly
(Print Engine) Removal” on
page 4-14
.
Note: If not properly installed, the
belt will slip.