Hitachi 32LD7200, Service Manual

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32LD7200 (PW2L)
Code stored up in
failure history
Self checking
item
Problem Phenomenon Cause
C10 No sync. (Snow noise) OSD of “ ! Check Antenna ”
appears.
No connection of ANT cable
Preset tuning is not yet
H11 Tuner problem Cannot receive the main
signal from antenna
Communication error of U101
H15 Composite video SW IC
problem
Cannot receive picture and
audio
Cannot change input mode
Communication error of I201
H16 Component video SW IC
problem
No component picture
Cannot change input mode
Communication error of I202
H31 Color demodulator IC
problem
Abnormal color
Dark picture
Communication error of I501
H32 Sync. separator IC
problem
Unsynchronized picture Communication error of I601
H33 3D Y/C separator IC
problem
Abnormal color
Dark picture / No picture
Communication error of I302
F63 I
2
C-bus latch problem Cannot store setting data
(Ex. Channel, Volume etc.)
SCL3/SDA3 latched up
Latest error code
Diagnosis
H11: OK H15: OK
H16: OK H31: OK
H32: OK H33: OK
F63 F63 - - - - - - - - -
Self check result area
Failure history area
Check result
Check item
[OSD]
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 center of the upper 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.
If you clear history of failure, make FACTORY RESET: enter the factory setting mode; press the SUB-POWER( )
button, INPUT SELECT( ) button and button on the center of the upper of the monitor at the same time. And
keep it for more than 5 seconds after the power turned on.
8. Seif-Diagnosis Function