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PD-42DXT
4.1 SELF-DIAGNOSIS FEATURE
4.1.1 OUTLINE
This unit comes with the "Self-diagnosis" feature, which checks
the operational state of the circuit and displays/saves it during
failure.
Diagnosis is performed when power is turned on, and information
input to the main microcomputer is monitored at all time.
Diagnosis is displayed in 2 ways via screen display and LED
flashes. Failure detection is based on input state of I
the various control lines connected to the main microcomputer.
4.1.2 HOW TO ENTER THE SELF-DIAGNOSIS DISPLAY MODE
(1) Press the [ オフタイマー ] key and set it to 30 minutes.
(2) Press the [ メニュー ] key.
(3) Press the [10] key to enter a service menu mode that is
different from the adjustment mode.
(4) Press the [4] key (Self-diagnosis Display mode) before the
service menu screen disappears. (Diagram 2)
(5) Press the [ 音声切換 ] key to enter Page 2 of the Self-
diagnosis Display mode (Diagram 2).
*Use the [ 音声切換 ] key to toggle between Page 1 and
Page 2.
4.1.3 HOW TO EXIT THE SELF-DIAGNOSIS DISPLAY MODE
To Save Failure History:
Turn off the power by unplugging the AC power cord plug when
in the self-diagnosis display mode.
To Clear (Reset) Failure History:
Turn off the power by pressing the [Power] key on the remote
control unit when in the self-diagnosis display mode.
4.1.4 FAILURE HISTORY
Failure history can be counted up to 9 times for each item.
When the number exceeds 9, display will remain as 9.
Failure history will be stored in the memory unless it has been
deleted.
NOTE:
Only SYNC (with/without synchronized signals) will be neither
counted nor stored.
1-52 (No.52108)
SECTION 4
TROUBLE SHOOTING
2
C bus and
* As "SYNC" is not counted, the number of failures is not displayed.
Service Menu Screen
Service Menu Screen
1. I2C STOP
2. STATUS DISP.
3. E.E.
4. SELF-CHK
This is a message for users.
Ignore this message when in the Service Menu
mode.
Fig.1
<Self-diagnosis Display Mode (Page 1)>
Item
Item
Diagnosis
Normal = OK
Abnormal = NG
<Self-diagnosis Display Mode (Page 2)>
Fig.2
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