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Diagnostic Information 2-67
4085-001
Index Card/Sensor Service Check
Transport Service Check
Note: If the carrier strikes the left side frame and continues to drive into the
frame, then see page 2-48. Go to the “Carrier System Test” on page 3-32 .
FRU Action
1 Index motor does
not work.
If the index motor does not work, see “Index Motor
Service Check” on page 2-56 . If the index motor
is working correctly see “Index System Test” on
page 3-33 . If the test fails, replace the index/
encoder disk assembly. See “Encoder Disk Feed
Roller Assembly Removal” on page 4-34 .
2 Index Sensor To check the sensor, see the “Index System Test”
on page 3-33 .
FRU Action
1 Transport Motor Check the motor for binds, or loose motor pulley.
Disconnect the transport motor (J5) from the
engine board. Check for approximately 12 ohms
between pins 1 and 2 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 engine board.
2 Maintenance
Homing Sensor
If access door switch does not work or carrier
does not move, see the “Maintenance Station
Service Checks” on page 2-55 .
3 Engine Board Disconnect (J2) from the engine board and check
for approximately +29 V dc between
(J2-1) and ground. If incorrect, replace the engine
board.
4 Carrier Guide
Rod
Clean the carrier rod.
Note: Lubricate the rod and the carrier rod
bearing surface. Do not use excess lubricant. Take
care to protect the encoder strip from grease.