Application Range; Designation; Adc Calibration; Pcb Assembly Adjustment Items - LG 22LS2100 Service Manual

1. Application Range

This document is applied to LD93Q chassis 22" LED Monitor
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 : 220 V, 60 Hz
(6) Adjustment equipments: Color Analyzer (CA-210 or
CA-110), Pattern Generator (MSPG-925L or Equivalent),
DDC Adjustment Jig equipment, SVC remote control
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.

3. ADC calibration

MSPG-925 series
Model : 60 (1024 X 768@ 60 Hz)
3.1. PC input ADC
(1) Auto RGB Gain/Offset Adjustment
■ Convert to PC in Input-source
■ Signal equipment displays
Output Voltage: 700mVp-p
Impress Resolution XGA (1024 x 768 @ 60Hz)
Model: 60 in Pattern Generator (1024X768@60Hz 16
step Gray Pattern)
Pattern: 29 in Pattern Generator (MSPG-925 Series)
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes

ADJUSTMENT INSTRUCTION

RGB
- 8 -
■ Adjust by commanding AUTO_COLOR_ADJUST (0xF1)
0x00 0x02 instruction
(2) Confirmation
■ We confirm to address "0xF1" in page "0xBC" of
EEPROM the value is "0xAA" or not.
■ If the value is not "0xAA," we adjust once more
■ We can write the ADC values from "0x00~0x05"
addresses in a page "0x0E"
* Manual ADC process using Service Remocon. After enter
Service Mode by pushing "ADJ" key, Execute "Auto-RGB"
by pushing "►" key at "Auto-RGB."
4. Adjustment items

4.1. PCB assembly adjustment items

4.1.1. 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.
LGE Internal Use Only