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Download Service Manual CDR775
Transcript
GB 48 7. Faultfinding trees CDR775 CD MODULE PLAYBACK PRESS <PLAY> • AUDIO? ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ NO YES YES DISTORTION? DAC 7309 TESTPOINTS 20, 21, 22 : I2S AT INPUT OF DAC 7309 CHECK POWER SUPPLY PINS 4, 13 CHECK CLK11 AT PIN 6 : 11.2896MHz PIN 11 : MUTE HIGH? TESTPOINTS 23, 24 : ANALOG OUTPUT? REPLACE DAC 7309 • OPAMP 7120 ⇒ TESTPOINTS 23, 24 : ANALOG OUTPUT? ⇒ POWER SUPPLY: PIN 8→12V ⇒ REPLACE OPAMP 7120 • • DAC 7309 OPAMP 7120 NO NO AUDIO CD OUT PCB? • • • FLEX TO CDR MAINBOARD FLEX TO CD OUT BOARD CHECK I/O BOARD, CD OUT BOARD YES PLAYBACK CD MODULE OK CL 96532086_031.eps 080999 Figure 7-6
