Performance verification
5-18
10070389 Rev. A
Puritan Bennett™ 700 Series Ventilator System Service Manual
5.
Rotary encoder test failed
a.
Verify rotary encoder cable connections are secure.
b.
Verify ventilator head/UI cable connections are secure.
c.
Replace rotary encoder.
d.
Replace controller PCB.
6.
External battery test failed
a.
Verify there is no visible damage to battery harness and connector.
b.
Check external battery fuse. Replace as necessary.
c.
Using
Sensor data
function in service menu, check external battery voltage. If
voltage is low, charge battery and repeat test step.
d.
Replace external battery.
e.
Check continuity of external battery harness. Replace harness, as required.
f.
Replace BBU PCB.
7.
Internal battery test failed
a.
Verify there is no visible damage to battery harness and connector.
b.
Verify battery level. If charge is low, repeat test (Section 5.6.3.2: if battery is not
charging, through step 4; if battery
is
charging, through step 6).
c.
Replace internal battery.
d.
Check continuity of internal battery harness. Replace harness, as required.
e.
Replace BBU PCB.
8.
EST failed
9.
+
24 V out of range
Disconnect main ventilator head harness from pressure solenoid PCB. Disconnect BBU
PCB/ventilator head harness from controller PCB, and verify voltage between pins 36
(24V) and 31 (GND) of BBU PCB/ventilator head harness is b23 and +25 V. If
voltage is in range, replace pressure solenoid or controller PCB. If voltage is low or not
present, 24 V output from power supply at power output terminal block. If this
voltage is in range, replace BBU PCB. If this voltage is low or not present, replace power
supply.
10. -
15 V out of range
Replace pressure solenoid PCB.
11. +
5V out of range
a.
Replace pressure solenoid PCB.
b.
Replace controller PCB.
12. +
1.2V out of range
Replace pressure solenoid PCB.
13.
UI-5V out of range
Replace UI display PCB.
14.
15V out of range
Replace pressure solenoid PCB.
Summary of Contents for Puritan Bennett 700 Series
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