EDAN SE-1200 Series Service Manual page 52

SE-1200 Series Electrocardiograph Service Manual
The printed report is illegible
Some characters
waveforms printed
missing.
Fail to detect paper
5. Parameter Troubles
Conditions
No ECG waveform
ECG waveform is abnormal
or disturbed
Heart rate is not accurate
① The rubber roller of
the recorder casing
has stain.
② The elasticity of the
spring of the recorder
frame is not good.
① The rubber roller of
or
the recorder casing
are
has a stain.
② Print head failure.
① There is a stain on the
detecting position of
the printing bracket.
② Reflective
photosensor failure
③ Main board failure
Possible Causes
① Defective
between the patient and
the electrodes
② Defective
between the
cable and the unit
③ ECG board failure
① Defective
between the patient and
the electrodes
② Patient cable failure
③ ECG board failure
① Waveform
failure
- 47 -
Inspection and Troubleshooting
① Clean the rubber roller
② Replace the spring
① Replace the rubber roller
② Replace the print head
① Clean the stain on the
detecting position of the
printing bracket
② Replace
photosensor
③ Replace the main board
Actions
① Attach the electrodes to
connection
the patient again or clean
the electrode area on body
surface with alcohol
connection
② Connect the patient cable
patient
to the unit
③ Replace the ECG board
① Attach the electrodes to
connection
the patient again or clean
the electrode area on body
surface with alcohol
② Replace the patient cable
③ Replace the ECG board
measuring
① Adjust connections
the reflective