Instructions On Replacing Main P.c.b. And Co; /O 2 Sensor - Sanyo MCO-5M Service Manual

Instructions on replacing main P.C.B. and CO

When the main P.C.B. and/or CO
CO zero/span adjustment, O
2
procedures.
Recommended write down SV for F06, F07 and F08 prior to replacing main P.C.B.
After main P.C.B. replaced, be sure to input each SV.
1. Call F03 and input "384".
(1) Press CAL key for approx. 5 seconds or more and call "F03" with
key. Then press ENT key.
(2) Input "384" and press ENT key.
2. Pour distilled water in humidifying pan and run the apparatus in SV 37 .
(1) Leave it for approx. 10hours* and make sure internal humidity should be equal or
higher than 90%.
* Note) In case internal humidity is not checked, required humidity will be obtained
for approx. 5hours operation
(2) CO should be set in 0%.
2
(3) Make sure no condensation in the chamber. If any condensation left in the
chamber, reduce the numerical value in F06. If any condensation left in the inner
door, add the numerical value in F07.
(4) Measure the internal temperature with Standard Thermometer (unit: 0.1
PT100 sensor.
3. Check the display temperature and the internal temperature.
If the internal temperature is not match with SV, temperature calibration should be done
as follow;
Method : Input the internal temperature (proper value) on the display.
Example : When the display temperature is 37.0
36.7 , press CAL key for approx. 5 seconds or more and input "36.7" with
4. CO zero adjustment
2
(1) Prior to CO
CO zero adjustment should be performed before CO
2
When CO
2
open.
(2) CO zero adjustment procedure
2
Press CAL key for approx. 5 seconds or more and press CAL key again.
With CO display blinks, input "00.0" with
2
If the CO display is "00.0", just press ENT key to come calibration to end.
2
5. CO span adjustment
2
(1) Set CO in 5% to be CO
2
charged). Measure CO
(2) CO span adjustment
2
If the measured value is in proper range, input the value to come CO
adjustment to end. When the measured value is not matched with display value,
CO span adjustment should be done as follow;
2
Press CAL key for approx. 5 seconds or more and press CAL key again.
With CO display blinks, input actual value with
2
(Ex. When the measured CO
and/or O
2
zero/span adjustment should be done as following
2
key and key, then press ENT key.
zero adjustment, make sure no CO
2
zero adjustment is performed again, make sure no CO
display stabilize (approx. 30 minutes passed after CO
2
value in sampling port.
2
value is 4.5%, "4.5" should be input.)
2
2
sensor are replaced, temperature calibration,
2
and the internal temperature is
is left in the chamber.
2
is charged.
2
key and
key and
29
/O sensor
2
key and
is left with door
2
key and press ENT key.
2
key.
) or
2
span