PD-42DXT
1-52 (No.52108)
SECTION 4
TROUBLE SHOOTING
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
2
C bus and
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.
Fig.1
Fig.2
Service Menu Screen
Service Menu Screen
1. I2C STOP
2. STATUS DISP.
3. E.E.
4. SELF-CHK
ߎߩࠝࡦࠬࠢࡦ␜ਛߪࡏ࠲ࡦࠍߐߥߢਅߐޕ
This is a message for users.
Ignore this message when in the Service Menu
mode.
Item
Item
:4#;1-1%21-
:4#;1-1%21-
.1$1-6+/1-
.1$1-6+/1-
5;0%/1-51-*&0)
5;0%/1-51-*&0)
/'/1-#8591-
/'/1-#8591-
8%&1-$51-
8%&1-$51-
#+11-;%1-
#+11-;%1-
6701-)%41-
6701-)%41-
220)+21-
220)+21-
Diagnosis
ޓ
Normal = OK
ޓ
Abnormal = NG
* As "SYNC" is not counted, the number of failures is not displayed.
<Self-diagnosis Display Mode (Page 1)>
241
241
1-
1-
.82
.82
1-
1-
#./
#./
1-
1-
6/2
6/2
1-
1-
#62
#62
1-
1-
#/2
#/2
1-
1-
/'/2
/'/2
1-
1-
6'/2
6'/2
1-
1-
&&6
&&6
1-
1-
&&2
&&2
1-
1-
(#0
(#0
1-
1-
#&
#&
1-
1-
&8+
&8+
1-
1-
<Self-diagnosis Display Mode (Page 2)>
Summary of Contents for pd-42dxt
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