Read LG 22LG3DCH (CHASSIS:LA76A) Service Manual online
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5.2. DDC EDID Write
1) Connect HDMI Signal Cable to HDMI Jack.
2) Write EDID DATA to EEPROM (24C02) by using DDC2B
2) Write EDID DATA to EEPROM (24C02) by using DDC2B
protocol.
3) Check whether written EDID data is correct or not. (Refer to
Product spec).
4) Remark
A week manufacture in address 0x10 can be changed. And
thus Checksum (Address: 0x7F) can be also changed.
thus Checksum (Address: 0x7F) can be also changed.
5.2.1. DIGITAL DATA 256Byte
- Remark: A week manufacture in address 0x10 can be
changed. And thus Checksum (Address: 0x7F) can be
also changed.
also changed.
1) All Data : HEXA Value
2) Changeable Data :
*: Serial No : Controlled / Data:01
**: Month : Controlled / Data:00
***:Year : Controlled
****:Check sum
**: Month : Controlled / Data:00
***:Year : Controlled
****:Check sum
5.3. HDCP setting
(High-Bandwidth Digital Contents Protection)
1) Connect D-sub Signal Cable to D-Sub Jack.
2) Input HDCP key with HDCP-key- in-program.
3) HDCP Key value is stored on EEPROM(AT24C512) which
2) Input HDCP key with HDCP-key- in-program.
3) HDCP Key value is stored on EEPROM(AT24C512) which
is 80~A1 addresses of 0xA0~0xA2 page
4) Write data by 64bytes.
5) AC off/ on and on HDCP button of MSPG925 and confirm
5) AC off/ on and on HDCP button of MSPG925 and confirm
whether picture is displayed or not of using MSPG925
6) HDCP Key value is different among the sets.
5.4. Outgoing condition Configuration
1) After all function test., press IN-STOP Key by SVC Remote
controller. And Make Ship Condition.
2) When pressing IN-STOP key by SVC remocon, Red LED
are blinked alternatively. And then turn off automatically.
(Must not AC power OFF during blinking)
(Must not AC power OFF during blinking)
1) Test Voltage
- GND: 1.5KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
2) Test Point
- GND Test = between power cord GND and Signal cable
metal GND
input Live.
3) leakage current: 0.5mArms (but, 32LG3DCH as hospital TV
limited by 0.1mArms.)
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