LG 60PB5600, Service Manual

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Only for training and service purposes
4.7. GND & Hi-pot test
■ GND TEST = POWER CORD GND and SIGNAL CABLE
GND
■ Hi-pot TEST = POWER CORD GND and LIVE&NUETRAL
■ Test Process
1. Check the POWER CABLE and SIGNAL CABLE
insertion condition.
2. Connect the AV JACK Tester
3. Controller(GWS103-4) on
4. GND TEST(Auto)
- If Test is failed, Buzzer operate
- If Test is passed, execute next process(HI-pot test)
- Remove A/V CORD from A/V JACK BOX
5. HI-POT test(Auto)
- If Test is failed, Buzzer operate
- If Test is passed, GOOD Lamp on and move to next
process automatically.
■ Checkpoint
(1) Test voltage
1) 3 Poles
- GND: 1.5KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
2) 2 Poles
- SIGNAL: 3KV/min at 100mA
(2) TEST time: 1 second
(3) TEST POINT
1) 3 Poles
- GND Test = POWER CORD GND and SIGNAL
CABLE GND.
- Hi-pot Test = POWER CORD GND and LIVE &
NEUTRAL.
2) 2 Poles
- Hi-pot Test = Accessible Metal and LIVE & NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5mArms
(Tuner GND is separated)
5. Model name & Serial number Download
5.1. Model name & Serial number D/L
■ Press “Power on” key of service remocon.(Baud rate :
115200 bps)
■ Connect RS232 Signal Cable to RS-232 Jack.
■ Write Serial number by use RS-232.
■ Must check the serial number at signal test of customer sup -
port. (Refer to below).
5.2. Signal TABLE
CMD: A0h
LENGTH : 85~94h (1~16 bytes)
ADH : EEPROM Sub Address high (00~1F)
ADL : EEPROM Sub Address low (00~FF)
Data : Write data
CS : CMD + ADH + ADL + … + Data_n
Delay : 20ms
5.3. Command Set
* Description
FOS Default write : <7mode data> write
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart,
0, Phase
Data write : Model Name and Serial Number write in EEP-
ROM,.
5.4. Method & Notice
(1) Serial number D/L is using of scan equipment.
(2) Setting of scan equipment operated by Manufacturing
Technology Group.
(3) Serial number D/L must be conformed when it is produced
in production line, because serial number D/L is mandatory
by D-book 4.0
CMD LENGTH ADH ADL DATA_1 ... Data_n CS DELAY
No. 1
Adjust mode EEPROM WRITE
CMD(hex) A0h
LENGTH(hex) 84h+n
Description n-bytes Write (n = 1~16)