Sanyo DC-TS765KR Service Manual page 7

TROUBLE SHOOTING
AC CORD PLUG
IC430,IC601 +5V POWER ONLY
IC430 RESET
X4300 CLOCK
IC430 ACTIVE
IC601 COMMUNICATION
POWER SUPPLY ; STANDBY mode
IC430 ACTIVE / P-CON ; LOW
±12V,±7V,DVD-POWER ; OFF / FIL,-30V ; ON
POWER KEY PRESS
DVD FUNCTION
P-COM ; HIGH
DVD-POWER ; HIGH
IC430 STANDBY DATA WAIT
±12V,±7V ; ON
IC451,IC452 COMMUNICATION
INITIALIZE ADAC (IC870)
RESET LOADER
READ,WRITE DATA IN EEPROM (IC801)
IC800 START COMMUNICATION WITH IC430
FROM MPU STANDBY DATA SEND
IC430 STANDBY DATA RCVD
IC430 VFD DATA RCVD
IC430 VFD DATA SEND
IC601 VFD DATA RCVD
DISPLAY OPENNING
START CONTROL OF LOADER
PICK INITIALIZE SPINDLE ROTATE
DISC Y/N
N
IVFD INDICATE
"NO DISC"
IC430 SYSCON IC241
SYS-CLK
X4300 DS601
FUNCTION
IC451
IC800
&
VOLUME
IC601
VFD-DRV IC818
IC870
6CH-DAC IC821
IC801
IC822
EEPROM
IC410
REG.
IC411
REG.
NG IC430 VDD,RESET,OSC CONFIRM
IC430 COMMUNICATION CONFIRM
P-CON,FIL,-30V CONFIRM
FM,AM,VIDEO1,VIDEO2 (VIDEO,TV)
NG POWER KEY CONFIRM
IC601 COMMUNICATION CONFIRM
PROTECT CIRCUIT CONFIRM
IC462,IC472,IC482,IC483 CONFIRM
P-CON
±12V,±7V,P-CON CONFIRM
DVD-POWER CONFIRM (IC410,IC411 etc)
NG
VDD,CLOCK CONFIRM
IC800 PERIPHERAL CIRCUIT CONFIRM
NG
COMMUNICATION LINE CONFIRM
REMOCON NG IC430 & DS601 PERIPHERAL CONFIRM
REMOCON OK IC430 PERIPHERAL CONFIRM
*1
NG
IC601 & IC430 PERIPHERAL CONFIRM
-30V FILAMENT VOLTAGE CONFIRM
COMMUNICATION LINE CONFIRM
NG
IC800,IC818,IC822 BUS-LINE CONFIRM
NG
LOADER CONFIRM
COMMUNICATION LINE CONFIRM (FFC)
Y
VFD INDICATE
"READING"
PLAYBACK MODE
- 6 -
TU-PLL
IR
DVD-MPU
&
MPEG
FLASH
SDROM
SDRAM
P-COM ; HIGH /
DVD-POWER ; LOW
IC430 STANDBY DATA WAIT
±12V,±7V ; ON
VIDEO1, VIDEO2 (VIDEO,TV)
IC451,IC452 COMMUNICATION
IC430 VFD DATA SEND
IC601 VFD DATA RCVD
VFD INDICATE "VIDEO1" or "VIDEO2"
POWER KEY CONFIRM
NG
IC601 COMMUNICATION CONFIRM
PROTECT CIRCUIT CONFIRM
IC462,IC472,IC482,IC483 CONFIRM
±12V,±7V,P-CON CONFIRM
TUNER
IC451,IC452,IC241 COMMUNICATION
IC430 VFD DATA SEND
IC601 VFD DATA RCVD
NG NG
*1
VFD INDICATE "FM" or "AM"____k(M)Hz
- 7 -
*1