Daewoo Dhc X100 Service Manual
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6. Trouble Shooting Guide 4. AUDIO LINE OUTPUT Abno rmal Check if the output of IC501 pin121 is ok? Replace IC501. No Ye s Check if the output of IC408 is ok?No Check if the Signal waveform of IC401 is ok? Ye s Ye s Check if REC Output of Jack is ok? Ye s OK Audio Abnormal of Rec Output Check if I2S between IC501 is ok? Check I2S Line.Ye s Check if VQ & FILT+ is ok ? No No Check PLL Circuit of IC408. Replace DAC, IC408 Ye s No Check IC409 Buffer. No Check Function IC, IC401 19 Audio Part
6. Trouble Shooting Guide 4. AUDIO LINE OUTPUT Abno rmal Check if the output of IC501 pin120 is ok? Replace IC501. No Ye s Check if the output of IC408 is ok?No Ye s Ye s Check i f SW Output of Jack is ok? Ye s OK Audio Abnormal of Subwoofer Output Check if I2S between IC501 is ok? Check I2S Line.Ye s Check if VQ & FILT+ is ok ? No No Check PLL Circuit of IC408. Replace DAC, IC408 Ye s No Check IC411 Pre Amp Circuit. 20 Audio Part
6. Trouble Shooting Guide 4. AUDIO LINE OUTPUT Abno rmal Check if the output of IC501 pin124 is ok? Replace IC501. No Ye s Check if the output of IC404 is ok?No Ye s OK Audio Abnormal of Optical Output Check if Setup is ok? Setting for Digital Output onYe s Check if IC303 is ok? No No Replace Buffer, IC303 Ye s 21 Audio Part
6. Trouble Shooting Guide 5. AUDIO CONTROL Abnormal Check if the I2C waveform of IC201 is ok? Check between IC501 to IC201. Replace IC201. No Ye sCheck if the data of IC501 is ok?No Ye s OK Audio Abnormal of Volume Control Check Input data of volume is ok? Check Connection CN701. Check Encoder SW. VR701.Ye s No Replace IC501 22 Audio Part
6. Trouble Shooting Guide 5. AUDIO CONTROL Abnormal Ye sCheck if the data of IC501 is ok?No OK Audio Abnormal of Remote Control Check Input data of RMC is ok? Check Connection CN701. Check Remote Receiver, RM701.Ye s No Replace IC501 23 Audio Part
6. Trouble Shooting Guide 6. VIDEO OUTPUT Abno rmal Ye sCheck if the Output of IC501 is ok? OK VIDEO Abnormal of Component Check Setup is ok? Setting for RGB Mode. Ye s No Replace IC501 Check the output of IC601 is ok?NoNo Check Filter Circuit. Check Drive IC, IC601. Check the output of Jack is ok? Ye s Ye sNo Check Filte r Circuit. Check Crystal is ok? Ye sReplace Cystal, XC501. No 24 Audio Part
6. Trouble Shooting Guide 6. VIDEO OUTPUT Abno rmal Ye sCheck if the Output of IC501 is ok? OK VIDEO Abnormal of S-VIDEO Check Setup is ok? Setting for S-VIDEO Mode. Ye s No Replace IC501 Check the output of IC601 is ok?NoNo Check Filter Circuit. Check Drive IC, IC601. Check the output of Jack is ok? Ye s Ye sNo Check Filte r Circuit. Check Crystal is ok? Replace Crystal, XC501. No 25 Audio Part
6. Trouble Shooting Guide 6. VIDEO OUTPUT Abno rmal Ye sCheck if the Output of IC501 is ok? OK VIDEO Abnormal of Composite Ye s Replace IC501 Check the output of IC602 is ok?NoNo Check the output of Jack is ok? Ye s Ye sNo Check Filter Circuit.Check Crystal is ok? Replace Crystal, XC501. No Check the control of Select is ok? Check Power Supply Circuit. Check Control Line between IC208 : Sel1, Sel 2 No Replace IC602 Ye s 26 Audio Part
6. Trouble Shooting Guide 7. MECHA CONTROL Ab normal Ye sCheck if the data input of IC501 is ok? OK Control Abnormal of Open/Close Ye s Replace IC501 Check the output of IC303 pin 1,7 is ok?NoNo Ye sCheck VFD data is ok? Replace Front PCB Ass’y. Check Connection CN701. Check data waveforn of VFD_DATA, CLK, CS No Check the Supplied power is ok? Check Powe r Supply Circuit. No Replace IC303 Ye s 27 Audio Part
6. Trouble Shooting Guide 7. MECHA CONTROL Ab normal Ye sCheck if the data input of IC501 is ok? OK Control Abnormal of Disc Loading Ye s Replace IC501 Check the output of IC302 is ok?NoNo Ye sCheck VFD data is ok? Replace Front PCB Ass’y. Check Connection CN701. Check data waveforn of VFD_DATA, CLK, CS No Check the Supplied power is ok? Check Powe r Supply Circuit. No Replace IC302 Ye s Check the interface da ta is ok? Check data between IC501. No Ye s 28 Audio Part