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THOMSON TECHNICAL COMMUNICATION
Television
Troubleshooting Flow Chart
TFC-04056
The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product.
REVISION DATE: Chassis: CTC211 9/23/2004
TOPIC: System Control Component Level Troubleshooting SYMPTOM: Dead Set - Pulsing
Press power button, green LED is lit & main board standby power supply is operational 1 1A
Is there 5 vdc at pin 51 of U13101
NO
Check reset circuit Q13107 and Q13106
YES 2A Check pins 40 & 42 for 5 vpp osc. 8 mhz Suspect Y13101, C13106, C13107
2
NO
YES 3A Check pin 5 for 5.2 VDC NO Suspect Power fail circuit Q14607 & Q14608
3
YES
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Product Safety Information
Product Safety information is contained in the appropriate Thomson Service Data covering models/chassis referenced herein. All specified Product Safety requirements and testing shall be complied with prior to returning equipment to the customer. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damages and may expose themselves and others to possible injury.
First Edition First Printing Copyright 2003 Thomson multimedia Inc. Printed in U.S.A. Trademark(s) ® Registered Marca(s) Registrada(s)
Page 1 of 2
THOMSON INC.
CTC211 System Control Component Troubleshooting
4A Is there 5 vpp and 5vdc at pins 43 & 44 of U13101 NO Remove U13102 eeprom
4B YES Is there 2.5 vdc at pins 43 and 44 of U13101 NO Suspect U13101
4C
Check U13203 pins 1,12,5,14 for clock & data
YES
NO
5A
YES
Suspect U13203
System control is Operational
Product Safety Information
Product Safety information is contained in the appropriate Thomson Service Data covering models/chassis referenced herein. All specified Product Safety requirements and testing shall be complied with prior to returning equipment to the customer. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damages and may expose themselves and others to possible injury.
First Edition First Printing Copyright 2003 Thomson multimedia Inc. Printed in U.S.A. Trademark(s) ® Registered Marca(s) Registrada(s)
Page 2 of 2
THOMSON INC.