Sony KLV-28R412B Service Manual page 20

3-3. Standby LED Blinking
3-3-5. 6 times blinking
6x blinking
Check if LED harness/FFC (CN9000)
is connected properly
Symptom gone
Change B Board
6x blinking
No
Able to repair
Panel Module
Yes
Symptom gone
Change Harness
6x blinking
Replace LS Bar*
B*Board Type:
B* Board Type
Size
PAN ASIA, CHINA EUROPE, AMERICA
28" BIS -
32" BIS BIL
40" BIS BIL
48" BIS BIL
NG
Connect LED harness
B board
Change Panel Module
Harness
*To avoid changing all LS bar, please follow steps below
(1) Turn off AC
(2) Unplug DC adaptor from DC jack
(3) Plug in DC adaptor to DC jack
(4) Turn on AC
(5) LS bar will turn on for ~4s before 6x blinking
(6) Observe which LS bar cannot turn on during power on
(7) Replace LS bar that failed to turn on
R410/412/413/420/422/423/424/425/426/427/428/430/433/435/
450/453/455/470/472/473/475/477/478/480/483/485/M5/M10B
Location of CN9000
CN900
0
BIL Board
CN9000
CN9000
ITC3
CHASSIS
CN9000
BIS Board
20