Service Modes, Error Codes, and Fault Finding
5.
5.6.8
Trouble Shooting HDMI section
Figure 5-9 Fault finding tree HDMI section
No Video and Audio
for any HDMI input
(permanently)
Check TMDS signal at pin 1,
3, 4, 6, 7, 9, 10, 12 of
connector 1 (if HDMI 1)
Yes
No
Check TMDS signal at pin
37,38,41,42,44,45,47,48 of
ADV3002 (if HDMI 1)
Malfuntion of HDMI
connector, ensure
solderbility of Connector
Check TMDS signal at pin
25,26,28,29,31,32,34,35 of
ADV3002
Yes
No
Malfuntion of PCB trace,
ensure no broken trace of
these signals between
connector and ADV3002
Yes
No
The video and audio path is
intact, no video & audio is
cause by MTK 5392
malfunction
Malfuntion of ADV3002
No Video and Audio for any
HDMI input
(Intermittent and differ
within various DVD player)
Go to CSM mode using RC
key "123654",
check item 11: Key(HDCP)
Valid
Invalid
check item 19:
EDID Version / Check sum
As per latest?
Reload HDCP key
Check the following possible hardware failure:
1) Supply of EEPROM IC (pin 8 of 7B02). Should be +5V.
2) Connectivity of I2C between EEPROM (7B02) and ADV3002
(7B05). Between pin 5, 6 of 7B02 and pin 61 , 62 of 7B05.
Should be +3.8V.
3) Connectivity of DDC line between HDMI connector and
ADV3002. (ex: pin 15, 16 of connector HDMI 1 to pin 69 , 70 of
ADV3002.)
4) Connectivity of DDC line between ADV3002 and MTK5392.
(pin 67, 68 of ADV3002 to test point F836 & F837)
No
Update EDID
Yes
1
8
490_211_090409.ep
s
090409
