BAM 1020-9800 Manual Rev W.docx
Page 58
T
Tape System Error
or
Filter Tape Error
The tape error usually indicates that the filter tape is has run out or broken. It occurs
if the right spring-loaded tensioner (tape roller nearest to the detector) is at the far
left limit of its travel. In this case, tape break photosensor S6 is ON continuously,
despite drive commands to the tape reel motors and the capstan motor. The tape
error is also generated if the pinch rollers are latched in the up position when a new
sample hour starts, preventing the cycle.
Note:
Firmware revision 3.6 and later will cause the concentration value to go to full-
scale due to a tape error, because the cycle cannot be performed with broken tape.
All previous firmware revisions did not set the concentration to full-scale, but instead
repeated the last valid concentration value until the tape was replaced.
In rarer cases, a tape error may also be generated due to a failure in the tape control
electromechanical system. In current firmware there are several possible sub-
categories for this error which will appear in the digital error log:
•
Tape, Latch
– Pinch rollers latched up at cycle start.
•
Tape, Shuttle
– Shuttle photosensor not responding to shuttle move.
•
Tape, Forward/Backward
– Tape supply motor or take-up motor not responding.
•
Tape, Tension/Un-tension
– Tensioner photosensor not responding.
•
Tape, Capstan
– Capstan motor or capstan photosensors not responding.
•
Tape, Self-Test
– Shuttle beam did not respond during self-test.
•
Tape, Break
– Broken or empty tape.
Tape errors caused by failures other than broken tape or latched pinch rollers can
usually be identified using the TEST > ALIGN menu to manually operate the motors
and photosensors. See Section 7.16. Tape errors can be caused by grit in the shuttle
beam ball slide. Contact tech service if the left/right shuttle slide action is not smooth.
