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4077-001
Transport Service Check
FRU
1
Transport Motor
2
System Board
3
Carrier Guide Rod
4
Transport Belt
Idler Pulley Parts
Carrier Frame
5
Encoder Strip
6
Printhead Cable
7
Encoder Strip
Printhead Cable
Encoder Card
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 2 and 3 on the motor cable. If the reading is
incorrect, 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 6 to 8 V dc between J6-2 and ground and
between J6-3 and 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
bearing surface.
Check for worn, loose or broken parts. Check for
obstructions blocking carrier movement.
Carrier to carrier frame engagement should be
lubricated with grease P/N 1329301.
Check for wear and dirt.
Be sure connector J4 is fully seated. Check the
cable for damage.
"Encoder Sensor Test" on
Perform the
page 21
. If you cannot enter the test, replace the
system board.
A problem with the maintenance station can cause
carrier movement problems at the right margin. Go
"Maintenance Station Service Check"
to the
on page 9
.
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