Toshiba RAS-10JKVP-E Service Manual page 65

10-7-2. How to Check Whether the Minus Ion Generator is Good or Not
Turn off the power breaker once,
and turn on again after 10 seconds.
Does the operation lamp flash?
YES
Turn off the power breaker and
remove CN34 (Micro switch
connector). Short-circuit CN34
pin at PC side, and turn on the
power breaker after 10 seconds.
Is DC12V applied
between 1 (Red/DC12V) and
(Brown/GND) of CN1 of the
2
high-pressure unit in the air filter?
YES
Is there conduction of
micro-switch connector under
OFF status of the micro-switch
(Front panel opened)?
NO
Is there conduction of
micro-switch connector under
ON status of the micro-switch
(Front panel closed)?
YES
1) Check operation while short-circuiting CN34 of the power P.C. board.
2) Perform filter operation by the remote controller.
• In this time, check that the remote controller is in status which is shortened by time on
the reactivation preventive timer and all display lamps go on for approx. 1 second
when a signal is received.
If time on the reactivation preventive timer is not shortened,
(
the high-pressure is not applied to electrode of the filter for approx. 1 hour.
• While the air filter operates, check that the air volume [AUTO] is not displayed.
(Because the power ON/OFF is controlled on the program)
3) Be sure not to touch the electrode with the human body.
Does the indoor fan rotate?
YES
Does the plasma lamp (Blue)
or the filter lamp (Red) go on?
YES
Does the plasma lamp
go off within 2 seconds after
it was ON, and does the
filter lamp (Red) go on?
NO
Referring to the right figure, check the
high-voltage output of the minus ion generator unit.
In this time, peel the thermal insulator, and attach
it to the original position after check operation.
(NOTE)
Use an exclusive high voltage tester; otherwise
the tester may be broken.
NO
Does the electrode
output approx. –6kV?
NO
Integrated
power supply assembly
NO
NO
YES
Deposited micro-switch
NO
Inoperable micro-switch
NO
NO
YES
YES
No trouble
– 65 –
To item "Power supply is not turned on"
Replace the power P.C. board
(MCC891) or the housing assembly.
Replace micro-switch.
• Conduction check of micro-switch
ON
)
Tester
To item "Only indoor fan does not operate"
Replace the main P.C. board (MCC891).
To item "How to check whether
the air filter is good or not"
• How to check output of minus ion
<Caution on High Voltage!!>
GND
High-voltage tester
Push the switch
ON
Release the switch
OFF
High-pressure
unit
Electrode