GE Corometrics 250cx Series Service Manual page 100

Chapter 5: Diagnostics and Troubleshooting
ID Symptom Description
The monitor recorder
(intermittently) prints
too lightly such that
S11.1
the prints on fetal
chart paper are barely
readable.
82
Recorder Light Printing Troubleshooting Table
Possible Causes
Inappropriate fetal chart
paper is used.
Paper residue, dust or
other material is built up
on thermal print head
(TPH).
Thermal print head
pressure is uneven
because the springs are
not seated properly.
Recorder door assembly
is broken or loose.
Press and hold the
recorder door toward
the monitor. If printing
darkens on either side,
check if recorder door
assembly is broken or
loose causing the roller
alignment to be out of
adjustment (recorder
door heat staking joint
loose or broken).
2036947-001
Actions and Solutions
Use GE-Recommended fetal chart paper only
(Part numbers: 2009828-CAO, 2009828-DAO,
2009828-FAO).
Use cotton swabs and methanol or isopropyl
alcohol to clean the thermal print head (See
section 3.3.2). Care must be taken not to touch
the heater elements while cleaning. Check for
missing segments on chart paper after cleaning.
Ensure all four springs are held captive between
TPH support and the recorder frame.
Replace the recorder assembly.
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