MALFUNCTION
PROBABLE CAUSE
CORRECTIVE ACTION
A . Patient cable.
2. Patient cable.
Replace faulty cable.
B. Paddle pickup.
1. Paddles must be
Clean and reapply gel.
clean and freshly gelled.
2. Place unit in a
Reposition unit. Best results are
position that inhibits
obtained when cables and
cables from flexing
patient are still. If this is
excessively.
impossible, use patient cable.
16.1.7. Normal QRS
1. Misadjustment of
Check for 0.5v at pin 10 of U102.
rate meter not
R145.
Adjust R145 for proper level.
counting, Sonalert.
2. U102, Q101, Q102,
Check for 12v 170 msec pulse
Q111, Q103, U103.
on emitter of Q103. Find and
replace faulty component.
16.1.8. Normal QRS,
R150, CR102, Q104,
Check for 12v 170
rate meter counting,
Sonalert.
msec pulse on emitter of Q104.
volume at full.
Sonalert not sounding.
Find and replace faulty
component.
16.1.9. Normal QRS,
U111, U105, L100.
Check as required. U11, U105,
rate meter not
counting. Sonalert
are best checked by substitution,
sounding.
faulty component.
Figure 2-3. Monitor troubleshooting guide (continued).
MD0362
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