LG 32LD340H Service Manual page 15

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
No Item Min
1. Audio practical max 9.0
Output, L/R 8.5
(Distortion=10% 6.3
max Output) 7.09
2. Speaker (8
Impedance)
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
Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
Typ Max Unit
10.0 12.0 W Measurement
8.9 9.8 Vrms condition
7.0 8.4 W
7.48 8.19 Vrms AVL Off
Clear Voice Off
10.0 15.0 W Measurement
5.0 15.0 W condition
EQ Off
AVL Off
Clear Voice Off
Remark
32/37/42LD320H-UA
EQ Off 26LD320H-UA
32/37/42LD320H-UA
26LD320H-UA
- 15 - LGE Internal Use Only