LG BD370 Service Manual page 44
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Also See for BD370:
- Owner's manual (56 pages) ,
- Specifications (2 pages) ,
- Manual (52 pages)
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ELECTRICAL TROUBLESHOOTING GUIDE
No 3.3V
YES
Is the
Vcc(3.8V)
supplied to IC153
Pin1?
YES
Is the
IC153 Pin4
"H"?
YES
Check or Replace
the IC153
No 12V_A
YES
Is the
Vcc(13.5V)
supplied to IC151
Pin1?
YES
Is the
IC151 Pin4
"H"?
YES
Check or Replace
the IC151
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Only for training and service purposes
NO
Check or Replace
the D123
NO
Check the DVD CTL
"H" signal from µ-com
NO
Check or Replace
the D121
NO
Check the DVD CTL
"H" signal from µ-com
No 5V
YES
Is the
Vcc(5.5V)
supplied to D132
anode?
YES
Is the
IC152 Pin4
"H"?
YES
Check or Replace
the IC152
No 12V_L
YES
Is the
Vcc(13.5V)
supplied to IC154
Pin1?
YES
Is the
IC154 Pin4
"H"?
YES
Check or Replace
the IC154
3-31
NO
Check or Replace
the D132
NO
Check the DVD CTL
"H" signal from µ-com
NO
Check or Replace
the D121
NO
Check the DVD CTL
"H" signal from µ-com
LGE Internal Use Only
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Troubleshooting
