Philips 42PFL4606H/12, Service Manual, Page: 24 / 83

Service Modes, Error Codes, and Fault Finding EN 24 TPM7.1E LA 5.
2011-Aug-19
5.7.2 Displaying the Entire Error Buffer
Additionally, the entire error buffer is displayed when Service
Mode “SDM” is entered.
5.8 Fault Finding and Repair Tips
Note:
•
It is assumed that the components are mounted correctly
with correct values and no bad solder joints.
• Before any fault finding actions, check if the correct options
are set.
5.8.1 NVM Editor
In some cases, it can be convenient if one directly can change
the NVM contents. This can be done with the “NVM Editor” in
SAM mode. With this option, single bytes can be changed.
Caution:
•
Do not change these, without understanding the function of
each setting, because incorrect NVM settings may
seriously hamper the correct functioning of the TV set!
• Always write down the existing NVM settings, before
changing the settings. This will enable you to return to the
original settings, if the new settings turn out to be incorrect.
5.8.2 Load Default NVM Values
It is possible to upload the default values to the NVM with
ComPair in case the SW is changed, the NVM is replaced with
a new (empty) one, or when the NVM content is corrupted.
After replacing an EEPROM (or with a defective/no EEPROM),
default settings should be used to enable the set to start-up and
allow the Service Default Mode and Service Alignment Mode to
be accessed.
5.8.3 No Picture
When you have no picture, first make sure you have entered
the correct display code. See paragraph
6.4 Option Settings
for
the instructions. See also Table 6-2 .
5.8.4 Unstable Picture via HDMI input
Check (via ComPair) if HDMI EDID data is properly
programmed.
5.8.5 No Picture via HDMI input
Check if HDCP key is valid. This can be done in CSM.
5.8.6 TV Will Not Start-up from Stand-by
Possible Stand-by Controller failure. Re-flash the software.
5.8.7 CSM
When CSM is activated and there is a USB memory stick
connected to the TV, the software will dump the complete CSM
content to the USB memory stick. The file (Csm.txt) will be
saved in the root of the USB memory stick.
5.8.8 Loudspeakers
Make sure that the volume is set to minimum during
disconnecting the speakers in the ON-state of the TV. The
audio amplifier can be damaged by disconnecting the speakers
during ON-state of the set!
5.8.9 Display option code
Attention: In case the SSB is replaced, always check the
Display Code in CSM, even when picture is available.
Performance with the incorrect display option code can lead to
unwanted side-effects for certain conditions.