Established
date
Standard Repair Process Detail Technical Manual
Revised
date
A18
Error
symptom
Content
Check power input voltage and ST-BY 7.8V
B. Power error _No power
SET Model
55LG73 & 55UN69/71/72/73/74/75/78/79/80/8100
Series
MS Level
Range [V]
LED On/Off
MS (0V)
0 ~ 0.25
Off
MS (2V)
1.75 ~ 2.25
On (Home mode)
MS (3V)
2.75 ~ 3.25
On (Store Mode)
Power Check Sequence
1. AC input Check : SK100 (100~240Vac)
2. PWR-ON Check : P201, 1 pin
- SET On : above 3V
- SET St-by : 0V
3. 13.2V DC Check : P201, 4~8 pin
- SET On : 13.2V
- SET St-by : 7.8V
4. MS Level Check : P201, 11 Pin
5. LED voltage Check : P801, LED B+
※
Home mode : General Customer
Store mode : use Store
all condition meets, Power Board OK.
※
Depending on Model Power Board is different.
But Interface(P801, P201) and Spec is same
전압
SK100 (AC input)
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Summary of Contents for 55UN6900PUB
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