Trouble Shooting - Sanyo DC-TS750 Service Manual

TROUBLE SHOOTING

TUNER OUTPUT ; L,R
VIDEO 1,2 OUTPUT ; L,R
DVD/CD OUTPUT ; L,R
C,SL,SR,SW PERIPHERAL CONFIRM
(IC470,IC480,IC451,IC471,IC481,IC472,IC482,IC483
DVD/CD OUTPUT ; L,R
This is a basic trouble shooting.
VIDEO COMPOSITE OUT ; OK
TUNER OUTPUT ; OK
VIDEO 1,2 OUTPUT ; OK
DVD/CD OUTPUT ; NG
LOADER CHANGE
OK?
N
3.3V,DAC5V
CONFIRM
CN870 Pin18,43
Y
IC870 Pin9~14
CONFIRM
Y
IC820 ABCLK
ALRCLK,ASDAT CONFIRM
Pin 40,41,45,46,47
N
IC820 Pin
FLOATING CONFIRM
IC820 NG
OK / C,SL,SR,SW NG
OK / C,SL,SR,SW NG
OK / C,SL,SR,SW NG
PERIPHERAL CONFIRM)
TUNER OUTPUT ; NG
VIDEO 1,2 OUTPUT ; NG
NG / C,SL,SR,SW OK
L,R SIGNAL LINE CONFIRM
(BETWEEN IC450 Pin 3,13
TO IC462 Pin 1,3)
Y
LOADER CHANGE
DAC5V LINE CONFIRM
N
3.3V LINE CONFIRM
IC412 PERIPHERAL CIRCUIT
CONFIRM (IC411,IC410 etc)
N
DAC IC870 PERIPHFRAL CONFIRM
DAC IC870 NG
MUTE CIRCUIT
Y Q8880 PERIPHERAL CIRCUIT
CONFIRM
DAC IC870 NG
TUNER OUTPUT ; OK
VIDEO 1,2 OUTPUT ; OK
DVD/CD OUTPUT ; L,R
IC870 Pin 9~12 CONFIRM
IC493 Pin 12,13 CONFIRM
TUNER OUTPUT ; L,R
VIDEO 1,2 OUTPUT ; L,R
DVD/CD OUTPUT ; L,R
MATIRIX SURROUND CONFIRM
(IC493,IC490,IC491 PERIPHERAL CONFIRM)
- 5 -
OK / C,SL,SR,SW NG
OK / C,SL,SR,SW NG
OK / C,SL,SR,SW NG
OK / C,SL,SR,SW OK