Read LG 22LN4000 (CHASSIS:LM91N) Service Manual online
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ADJUSTMENT INSTRUCTION
1. Application Range
This document is applied to LD93Q chassis 22” LED TV which
is manufactured in TV Factory or is produced on the basis of
this data.
2. Designation
(1) The adjustment is according to the order which is designated
and which must be followed, according to the plan which
can be changed only on agreeing.
(2) Power adjustment : Free Voltage.
(3) Magnetic Field Condition: Nil.
(4) Input signal Unit: Product Specification Standard.
(5) Reserve after operation : Above 5 Minutes (Heat Run)
Temperature : at 25 °C ± 5 °C
Relative humidity : 65 ± 10 %
Input voltage : 100 - 240V~, 50 / 60 Hz
(6) Adjustment equipments : Color Analyzer (CA-210 or
CA-110), Pattern Generator (MSPG-925L or Equivalent),
DDC Adjustment Jig equipment, Service remote control
3. Adjustment items
3.1. PCB assembly adjustment items
3.1.1. Input Tool-Option, Area Option
- Option adjustment following BOM (Tool Option, Area Option)
(1) Required Equipments
: Remote control for adjustment
(2) Profile: Must be changed the option value because being
different with some setting value Depend on module
maker, inch and market.
(3) Adjustment method
The input methods are same as other chassis. (Use
IN-START key on the Adjust Remote control.)
1) Push the IN-START key in the Adjust R/C.
2) Input the Option Number that was specified in the BOM,
into the Shipping area.
3) Select “Tool Option/ Area Option” by using ▲/▼(CH+/-)
key, and press the number key(0~9) consecutively
Ex) if the value of Tool Option1 is 7, input the data using
number key “7” (If not changed the option, the input
menu can differ from the model spec.)
* Refer to Job Expression of each main chassis ass'y
(EBTxxxxxxxx) for Option value
* Before PCB check, you have to change the Tool option,
Area Option and have to AC off/on (Plug out and in)
(If missing this process, set can operate abnormally)
* Never push the IN-STOP key after completing the
function inspection.
3.2. S/W program download
(1) Profile : This is for downloading the s/w to the flash
memory of IC603.
(2) Equipment
1) PC
2) MTK_tool program
3) Download jig
4) USB
(3) Connection structure
(4) Connection condition
1) IC name and circuit number : Flash Memory and IC603
2) Tact time : about 2min
3.3. Download method 1
3.3.1. Preliminary steps
(1) Connect the download jig to 4pin jack (P303)
(2) Connect the PC to USB jack
Case1 : Software version up
1. After downloading S/W by USB , TV set will reboot
automatically.
2. Push “In-stop” key.
3. Push “Power on” key.
4. Function inspection
5. After function inspection, Push “In-stop” key.
Case2 : Function check at the assembly line
1. When TV set is entering on the assembly line, Push
“In-stop” key at first.
2. Push “Power on” key for turning it on.
→ If you push “Power on” key, TV set will recover
channel information by itself.
3. After function inspection, Push “In-stop” key.
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PC
Main
B/D
B/D
Download jig
4pin harness
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