LG 32LD340H - Page 15

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6. GND and Internal Pressure check
6.1. Method
1) GND & Internal Pressure auto-check preparation
- Check that Power Cord is fully inserted to the SET.
(If loose, re-insert)
2) Perform GND & Internal Pressure auto-check
- Unit fully inserted Power cord, Antenna cable and A/V arrive to the auto-check process.
- Connect D-terminal to AV JACK TESTER
- Auto CONTROLLER(GWS103-4) ON
- Perform GND TEST
- If NG, Buzzer will sound to inform the operator.
- If OK, changeover to I/P check automatically.
(Remove CORD, A/V form AV JACK BOX)
- Perform I/P test
- If NG, Buzzer will sound to inform the operator.
- If OK, Good lamp will lit up and the stopper will allow the pallet to move on to next process.
6.2. Checkpoint
• TEST voltage
- GND: 1.5KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
• TEST time: 1 second
• TEST POINT
- GND TEST = POWER CORD GND & SIGNAL CABLE METAL GND
- Internal Pressure TEST = POWER CORD GND & LIVE & NEUTRAL
• LEAKAGE CURRENT: At 0.5mArms
7. Audio
Measurement condition:
1. RF input : Mono, 1KHz sine wave signal, 100% Modulation
2. CVBS, Component : 1KHz sine wave signal 0.4Vrms
3. RGB PC : 1KHz sine wave signal 0.7Vrms
LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
No Item Min Typ Max Unit Remark
1.
Audio practical max 9.0 10.0 12.0 W Measurement 32/37/42LD320H-UA
Output, L/R 8.5 8.9 9.8 Vrms condition
(Distortion=10% 6.3 7.0 8.4 W EQ Off 26LD320H-UA
max Output) 7.09 7.48 8.19 Vrms AVL Off
Clear Voice Off
2. Speaker (8Ω 10.0 15.0 W Measurement 32/37/42LD320H-UA
Impedance) 5.0 15.0 W condition 26LD320H-UA
EQ Off
AVL Off
Clear Voice Off