LG 50PW450 Service Manual - Page 40

PDP TV, All Input Audio Problem

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Repair Process-Reference data PDP TV Input Block All Input Audio Problem Making Revision 2010. 11. 16 전자 - 6-2 A2-1 Make sure you can't hear any audio Y N Check speaker for damage. Y Check Connector N P301 Y Check IC303 Power N 17V(C340), 3.3V(R365,R374) Y Check IC700 Status N PDN(#23) / Reset(#31) is High? Y Check SCL,SDA N R359, R360 Y N Check Mstar I2S Output #27,28, 29, 30 on IC303 Y Replace AMP(IC303) Replace the Speaker Replace P301 Check 17V (P600 #1,2), 3.3V (IC606 #2) Check Reset (R380) / PDN (R374) :They must be High (3.3V) Replace R359, R360 Replace MSTAR(IC400). ⓒ LG Electronics. Inc.2010

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โ“’
LG Electronics. Inc.2010
Making
์ „์ž
- 6-2
Revision
PDP TV
Input
Block
All Input Audio Problem
Make sure you canโ€™t hear any audio
Check speaker for damage.
Replace the Speaker
Y
N
Check Connector
P301
Replace P301
Y
N
Check SCL,SDA
R359, R360
Replace R359, R360
N
Y
Check IC700 Status
PDN(#23) / Reset(#31) is High?
Check
Reset (R380) / PDN (R374)
:They must be High (3.3V)
Y
N
Check IC303 Power
17V(C340), 3.3V(R365,R374)
Check
17V (P600 #1,2),
3.3V (IC606 #2)
Y
N
Y
Check Mstar I2S Output
#27,28, 29, 30 on IC303
Replace MSTAR(IC400).
N
Replace AMP(IC303)
Y
Repair Process-Reference data
A2-1
2010. 11. 16