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4076-0WJ
Transport Service Check
FRU OR PROCEDURE
1
Transport Motor
2
System Board
3
Carrier Rod
4
Transport Belt
Carrier Guide or Rod
Idler Pulley Parts
Cable Clip
5
Encoder Strip
6
Print Head Cable
7
Encoder Strip
Print Head Cable
System Board
8
Maintenance Station
17
ACTION
Check the motor for binds, or loose
motor pulley.
Disconnect the transport motor (J6)
from the system board. Check for 8 to
18 ohms between pins 1 and 2 on the
motor cable. If the reading is incor-
rect, replace the motor.
Check for motor pins shorted to the
motor housing. If you find a pin
shorted to the housing, replace the
motor. If the failure remains, replace
the system board.
Turn the printer off and disconnect J6
from the system board. Turn the
printer on and check for a pulse of 3
to 5 V dc between J6-1 and ground
and between J6-2and ground on the
system board as the machine goes
through POST.
Clean the carrier rod. Note: Do not
lubricate the rod or the carrier rod
bearings.
Check for worn, loose or broken
parts. Check for obstructions blocking
carrier movement.
Check for wear and dirt.
Be sure connector J1 is fully seated.
Check the cable for damage.
Perform the
"Encoder Sensor Test" on
page
19. If you cannot enter the test,
replace the system board.
A problem with the maintenance sta-
tion can cause carrier movement
problems at the right margin. Go to
the
"Maintenance Station Service
Check" on page
9.
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