Mcs Part Check; Ic504(M24C16) Check - LG CM4550 Service Manual
Mini hi-fi system
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Also See for CM4550:
- Owner's manual (38 pages) ,
- Simple manual (4 pages) ,
- Simple manual (4 pages)
Table of Contents
AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE
2. MCS PART CHECK
MCS PART CHECK
YES
Check if
voltage of CN501 Pin7
is 5.6 VA.
YES
Check if IC510
have 3.3 V output.
YES
Check if IC508
have 1.2 V output.
YES
X501: 32.768 kHz,
X500: 24 MHz,
Check the operation.
YES
OK
3. IC504(M24C16) CHECK
CHECK IC501 PIN.
YES
Check pinC2, pinB1
DATA : CLK
YES
OK
NO
Refer to
SMPS troubleshooting.
NO
Check and change IC510.
NO
Check and change IC508.
NO
Check MCS
voltage 3.3 VA.
YES
Check MCS.
YES
OK
3-20
NO
Refer to MCS troubleshooting.
NO
Replace MCS.
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