Signal Circuit Self-Diagnosis Function - Hitachi 42PD9700C Service Manual

Signal circuit self-diagnosis function

This function is for the failure of the signal circuit, for example the phenomenon as below:
"Sometimes power turns off abnormally." "Sometimes picture disappears abnormally."
To enter to this Self-Diagnosis mode, follow the next steps:
Preparation:
1) The Power Cord should be connected to AC line and the Main Power switch should be turned on.
2) Turn the power off by the SUB-POWER( ) button of the monitor or the remote control.
Procedure:
1) Press the SUB-POWER( ) button and button on the bottom of the monitor at the same time, and keep
it for more than 5 seconds after the power turned on.
2) The monitor will be turned on, and it will display On-Screen Display of the Self-check result and the failure history as
below.
3) Any operation would cancel the Self -Diagnosis mode.
4) The following table shows the OSD symbols and contents of failure PWB in which failure most probably
would be allocated according to the number of blinks.
Check item
Code stored up in
failure history
C10
H11
H15
H16
H31
H32
H71
F63
If you clear history of failure, make FACTORY RESET: enter the factory setting mode; press the SUB-POWER(
) button, INPUT SELECT(
for more than 5 seconds after the power turned on.
42PD9700C/U & 55PD9700C/U
Check result
Self Check
H11: OK
H16: OK
H32: OK
F63 F63 - - -
Latest error code
Self checking Problem
item
No sync. (Snow noise)
Tuner problem
Composite video SW IC
problem
Component video SW IC
problem
Color demodulator IC
problem (sub)
3D separator ZC
problem
HDMI IC
problem
2
I C-bus latch problem
) button and button on the bottom of the monitor at the same time. And keep it
[OSD]
H15: OK
Self check result area
H31: OK
H 71 : OK
Failure history area
- - - - - -
Phenomenon
OSD of " ! Check Antenna "
appears.
Cannot receive the main
signal from antenna
Cannot receive picture and
audio
Cannot change input mode
No component picture
Cannot change input mode
Abnormal colour
Dark picture
Abnormal colour
Dark picture / No picture
No picture
Cannot store setting data
(Ex. Channel, Volume etc.)
54
Cause
No connection of ANT cable
Preset tuning is not yet
Communication error of U101
Communication error of I201
Communication error of I601
Communication error of I504
Communication error of I501
Communication error of I400
SCL3/SDA3 latched up