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ADJUSTMENT INSTRUCTION
1. Application Range
This spec. sheet is applied to all of the LD75A chassis
manufactured at LG TV Plant all over the world.
Ex.) LD75A : 37/42/47LF65-ZC, 37/42/47LY96-ZA
2. Specification
1.1 Because this is not a hot chassis, it is not necessary to
use an isolation transformer.
However, the use of isolation transformer will help to
protect test instruments.
1.2 Adjustment must be done in the correct sequence.
1.3 The adjustment must be performed at 25
5°C
temperature and 65
10% relative humidity if there is
no specified designation.
1.4 The input voltage of the receiver must be kept between
100~220V, 50/60Hz.
1.5 Before adjustment, execute Heat-Run for 30 minutes at
RF no signal.
3. Channel Recover
* Use Channel Recover of System Control3 of Service
Menu. You can load The Channel Map In LGEMA and
LGEWR.
1) Press ADJ key on Service Remote Control. And then
Choice System Control3.
2) Choice Channel Recover.
3) Press "
" key. You can See "OK" letter. And Then The
Set power off automatically.
4) After Turn on the SET. You can confirm The Channel
map on Programme Edit OSD.
Warning … If you press IN-STOP key, The channel map
will disappear.
4. EDID
* When do Set Assembly, EDID data must scan in DDC
line.
Caution
* Use the proper signal cable for EDID Download
- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists
* Caution: - Never connect HDMI & D-sub Cable
at the same time.
- Use the proper cables below for
EDID Writing.
4.1. EDID Data
4.2. Data (Refer to Product specification)
1> ANALOG (128Bytes)
Item Condition Hex(16) Data
Manufacturer ID GSM 1E6D
Version Digital : 1 01
Revision Digital : 3 03
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