Sanyo DVD-1500A, Service Manual

Page: 38 / 93

- 37 -
TROUBLE SHOOTING
General flow
NG
NG
NG
NG VFD
INDICATE
"READING"
FROM MPU STANBY DATA SEND
IC601 STANDBY DATA RCVD
IC601 POWER ON DATA SEND
START
COMMUNICATION
WITH VFD
READ/WRITE DATA
IN EEPROM
RESET LOADER AND
CHIPS
P-CON.FHIGH
+5V/+12/-30/FIL.FON
OPEN/CLOSE.ETRAY LED LIGHT
IC601 STANDBY DATA WAITE
STANDBY LED OFF
POWER KEY
PRESS
POWER SUPPLY.FSTANDBY mode
IC601 ACTIVE/P-CON.FLOW
+5V/+12/-30/FIL.FOFF
STANDBY LED LIGHT
AC-CORD PLUG IN
STANDBY LED
LIGHT
POWER KEY
PRESS
STANDBY LED
OFF
OPEN/CLOSE.ETRAY
LED LIGHT
RESET LOADER AND
CHIPS
READ/WRITE DATA
IN EEPROM
START
COMMUNICATION
WITH VFD
VFD
INDICATE
"READING"
INITIALISE
MEG DECODER
(IC127)
DISPLAY
LOGO
START CONTROL OF
LOADER
PICK INITIALISE
SPINDLE ROTATE
INITIALISE
ADAC(IC130)
DISC Y/N N Y PLAYBACK mode
VFD
INDICATE
"NO DISC"
Except EU Version
DVD-S1500/US2
DVD-1500A/SS,AU
DVD-DWM-360/US2
Communication LINE confirm
REMCON NG. IC116/IC113,112
periphera confirm
REMCON OK. then IC601
peripheral confirm
l
POWER KEY confirm
LED
peripheral circuit confirm
P-CON/+5V/+12/-30/FIL confirm
IC601 VDD/RESET/OSC confirm
IC601:FPC16316-80 confirm
STANDBY LED
peripheral circuit confirm
P-COn/+5V/+12/-30/FIL confirm
RESET (IC130) confirm
VDD/CLOCK confirm
IC116
peripheral confirm
IC601 VDD/RESET/OSC confirm
IC601:UPD16311 confirm
STANDBY LED
peripheral circuit confirm
POWER KEY confirm
STANDBY LED
peripheral circuit confirm
LED peripheral circuit confirm
RESET (IC130) confirm
VDD/CLOCK confirm
IC116
peripheral confirm
IC118-IC127 BUS-LINE confirm
IC127/116
peripheral confirm
LOADER confirm
Communication LINE confirm (FFC)
EU Version
DVD-1500/UK, XE
DVD-6000/XE
IIC BUS LINE confirm
IC601 VFD
peripheral confirm
-30V.EFILAMENT voltage confirm
Communication LINE confirm
IIC BUS LINE confirm
IC601 VFD
-30V.EFILAMENT voltage confirm
Communication LINE confirm
peripheral circuit confirm
NG
OK
OK
OK
OK
NG
OK
NG
OK
NG
OK
NG
OK
NG
OK
NG
OK
NG
OK
OK