LG 32LN655V (CHASSIS:LD33B) Service Manual ▷ View online
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2013 LED/LCD TV
Engineering guide
Engineering guide
< Applicable Model : Mid-end Platform >
XXLA74*-Z*
XXLA71*-Z*
XXLA69/66*-Z*
XXLA64/62/61*-Z*
XXLN57*-Z*
XXLA71*-Z*
XXLA69/66*-Z*
XXLA64/62/61*-Z*
XXLN57*-Z*
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◈
CONTENT ◈
1. New features
2. Main PCBs
3. Block Diagrams, IIC Map
4. Structure of TV set and connection of sub ass’ys
5. New sub ass’ys
2. Main PCBs
3. Block Diagrams, IIC Map
4. Structure of TV set and connection of sub ass’ys
5. New sub ass’ys
- Instruction of new sub ass’ys
6. Adjust way of new features
7. Repair guide
7. Repair guide
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EPI Interface
EPI(Embedded Point-Point Interface)
Features
•
Point-Point topology (support 2 Pair option)
•
CDR (Clock Data Recovery)
•
Bandwidth up to 1.85Gbps/pair
at FHD 120Hz 10 bit application
•
Lock signal cascading and feedback to T-Con
•
Embedded Control Data
Merits
•
Better reliability on common noise
•
No data skew and better EMI margin
•
Fewer lines than mini-LVDS
•
Slim PCB design
TCON
2
LOCK
VCC
1
Figure1. Topology
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EPI Interface (mini-LVDS vs. EPI)
Comparison
HF mini-LVDS
What to change
EPI (Embedded clock P-to-P Interface)
-
Difficult to upgrade bandwidth limit
-
Multiple number of wires needed for higher bandwidth
HF mini-
LVDS
FHD (10bit)
60Hz
120Hz
240Hz
No. of Signal
36
36
72
Connector
60pin
(2ea)
60pin
(2ea)
80pin
(2ea)
-
Better reliability on common noise
-
No data skew. Better EMI margin
-
Lower cost ( Cable, Connector )
-Slim S-PCB design (14mm Æ 10mm) helps slimmer TV
EPI
FHD (10bit)
60Hz
120Hz
240Hz
960ch
960ch
720ch
No. of Signal
12
12
32
Connector
-
50 pin
(2ea)
70pin
(2ea)
LCM (T-con to S-Driver IC)
TCON
2
LOCK
VCC
1
TCON
18
VCC
1
18
HF mini-LVDS
EPI
* Bandwidth Capability
- FHD 120Hz 10Bit : 594Mbps@36Lines
→ 1.65Gbps@12Lines
- FHD 240Hz 10Bit : 594Mbps@72Lines
→ 1.25Gbps@32Lines
(FHD 120Hz)
(FHD 120Hz)
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