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Established
date
Standard Repair Process Detail Technical Manual
Revised
date
A18
Error
symptom
Content
Check power input voltage
B. Power error _No power
date
Backlight
Symbol
Values
Unit
Forward
Voltage
Min
Typ Max
28
29
31 5
34
28
VF
29
31.5
34
Vdc
32
34.8
37.8
40.8
43
69.6
75.6
81.6
<28”>
Check the DC 12V.
A18
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Summary of Contents for 28LM4 0B-PU Series
Page 11: ... 2 5 0 11 2019 ...
Page 13: ... 13 6 66 0 8 2019 ...
Page 14: ... 14 2019 5HPRYH WKH EDFN FRYHU ...
Page 15: ... 15 2019 5HPRYH WKH SRZHU FRUG KRUQ FRQQHFWLRQ DQG UHPRYH ERWK VLGH UDLOV RI WKH PDLQ ERDUG ...
Page 17: ... 7 2019 5 Remove the tape and unplug the LVDS ...
Page 18: ... 18 2019 6 Remove the tape that holds the speaker line and remove the horn ...
Page 19: ... 19 2019 7 Remove the wall bracket ...
Page 20: ... 20 2019 8 Remove the tape thaW holds the IR plate line and remove the IR plate ...
Page 21: ... 21 2019 9 Place the removed mirror flat on the guard mat ...
Page 22: ...7528 6 227 1 8 22 2019 ...
Page 69: ......