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19
7 Troubleshooting Guide
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㩷
㩷
㩷
㪈㩷
㪌㪅㪉㩷㩷
㪊㩷
㪊㪅㪊㩷
㪋㩷
㪈㪍㪅㪇䌾㪈㪐㪅㪇㩷
㪍㩷
㪈㪍㪅㪇䌾㪈㪐㪅㪇㩷
㪏㩷
㪈㪅㪉㪌㪌䌾㪈㪅㪌㩷
㪐㩷
㪊㪅㪊㩷
;GU
0Q
;GU
;GU
0Q
0Q
;GU
0Q
;GU
;GU
㩷
㩷
㪈㩷
㪩㩷㩿㪄㪀㩷
㪉㩷
㪩㩷㩿㪂㪀㩷
㪊㩷
㪣㩷㩿㪄㪀㩷
㪋㩷
㪣㩷㩿㪂㪀㩷
0Q
;GU
;GU
0Q
0Q
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Item No.
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Function
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P.C.B.
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㪈㩷
Bluetooth
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Bluetooth P.C.B./Main P.C.B.
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㪊㩷
USB
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㩷
㪋㩷
CD
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㩷
㪌㩷
Tuner
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㩷
㪍㩷
Remote control
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㪎㩷
Bass/Treble/Volume control
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㪏㩷
FL Display
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㩷
㪐㩷
Switches
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㩷
㪈㪇㩷
Speaker
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Main P.C.B.
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No Power
No Sound to speaker unit
㧔at times or all the times㧕
Switch between L and R speaker. If no sound continues, speakers are faulty.
Check value of resistance for speakers. (if it is
пǡ
speakers are faulty.)
Replace speaker unit
No Sound from speaker unit
Check main unit or speaker is faulty.
Is sound waveform output from speaker terminal (CN400) ?
Check connection of speaker cables and any damage/breaking with cables
Check sound input circuit (Tuner/CD/USB/BT P.C.B., etc.)
Replace Main P.C.B.
Replace Main P.C.B.
Replace Main P.C.B.
PWM singnal output(Pin25, 30, 31, 36) from DSP/D-AMP IC400 is OK?
PWM singnal input(Pin1, 5, 9, 10) to DSP/D-AMP IC400 is OK?
Pin No.
Waveform Output
Table 2
Table 2
Table 1
Pin No.
Voltage Value
Table1
SMPS
㧔P1700㧕-MAIN㧔CN1100)
No power during power-on of the unit
Confirmation if AC Power from SMPS P.C.B. to Main P.C.B.
Check AC Cord and AC Inlet & replace them
Is AC Power present at the AC Inlet (P5701) ?
Is fuse (F1700) on SMPS P.C.B. OK?
Check & replace Fuse (F1700)
Is AC Power present at P1700 (SMPS) to CN1100 (Main)?
Is 10P wire between P1700 (SMPS) to CN1100(Main) OK ?
Check each component on SMPS P.C.B.
Replace 10P wire
㪣㫀㫊㫋㩷㫆㪽㩷㫇㫆㫊㫊㫀㪹㫃㪼㩷㪺㪸㫌㫊㪼㩷㫆㪽㩷㪽㪸㫀㫃㫌㫉㪼㩷㪹㫐㩷㪽㫌㫅㪺㫋㫀㫆㫅
The P.C.B. that could be speculated as the cause of failure by a function
Table3
Table3
IR components/Panel P.C.B.(Components)/Main P.C.B.
USB P.C.B.(Components)/Main P.C.B.
CD Interface P.C.B.(Components)/Main P.C.B.
Tuner P.C.B.(Components)/Main P.C.B.
Button P.C.B.(Components)/Volume P.C.B.(Components)/Panel P.C.B.(Components)/Main P.C.B.
Button P.C.B.(Components)/Volume P.C.B.(Components)/Panel P.C.B.(Components)/Main P.C.B.
Panel P.C.B.(Components)/Main P.C.B.
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