Advertisement
U8 SAA7117: The SAA7117(A)E/H is a consequent derivate of SAA7118 X-VIP
multistandard video decoder. In addition to its predecessor, it provides 10 bit A/D-
conversion, enhanced PAL/NTSC comb filtering, more versatile VBI data processing,support
of High Definition component video, picture improvement processing, and more robustness
with VCR-type signals.
B: Debug flow-chart
Initialization:
*Vs on
+60 +190 FOUND
AC ON
Power board:
STANDBY +5V FOUND
System Reset
Power On
YES
+9V +12V +5V
+2.5V +3.3V +1.8V
FOUND
SvpEx Reset
Svpex E0 Good
InitAppHas Accomplish
PICTURE DISPLAY
GOOD
Whether
NO
input
Power failure
SvpEx E0 error
*SvpEx no ack.
* SvpEx communicate with
MCU was wrong.
Non integrity
*
SvpEx communicate with
alternating
current
*Repair power board.
*Replace fuse.
*Check dc-dc circuit
and LDO circuit.
DDR was wrong.
Advertisement
