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S/M No. :DSJ112FEFO Service Manual REAR PROJECTION TV CHASSIS : SJ-112 MODEL : DSJ-4710CRA/5510CRA DSJ-4720CRA/5520CRA Caution : In this Manual, some parts can be changed for improving. their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List)in Service Information Center(http://svc.dwe.co.kr) DAEWOO ELECTRONICS Corp. http : //svc.dwe.co.kr Feb. 2004 Contents 1. Safety Instruction 3 2. Product Specification 4 3. Remote Control 5 4. Adjusting Method 6 5. Explanation for circuit operation 12 6. Trouble Shooting 34 7. Service Part list 43 8. Schematic Diagram 1) Block Diagram 76 2) Power 77 3) Rear IO 78 4) AV main 79 5) deflection 80 6) Convergence Amp & Sound Amp 81 7) Convergence Module 82 8) CRT Amp 83 9) Control & side 84 9. PRINTED CIRCUIT BOARD 1) Main PCB 85 2) Power PCB 86 3) AMP PCB 87 4) CRT PCB 88 5) DEF PCB 89 6) UNION-1 PCB(CONTROL, SIDE) 90 7) UNION-2 PCB(CONV MODULE, REAR IO 91 10. EXPLODED VIEW 1) DSJ-4710 92 2) DSJ-4720 93 3) DSJ-5510 94 4) DSJ-5520 95 1 1. Safety Instruction 1. When all services are carried out, every item required in this manual needs to be followed and the services should be performed by A/S man. 2. The following general items should be performed before staring the services. 1) Unplug the power. 2) Uncover the cabinet. 3) To prevent a danger of shock, touch a terminal of plug on the chassis ground and discharge a remaining voltage. 4) Check if all parts are in the proper places, omitted or burned. 5) Check the soldering state of all parts, if a clad copper is loose or peeled off and if there is a short between clad coppers. 6) When all the articles mentioned above are normal, plug the power and refer to "Fault diagnosis according to cause and symptom" of this manual for service according to screen state. 3. Pay attention to a basic wiring and check a damaged part if a disconnected circuit is found and replace it with a new one. 4. The equal rated parts should be used depending on the parts list of this manual when a part needs to be replaced. Because some electronic parts and appli