Hyundai HSS-730 Service Manual page 23

HSS-730/830 & UFD505/515 SERVICE MANUAL
5.9. A digit in FND doesn't display
Check that
Pulse signals which control 4 digit
output from transistor.
Digit data from in GPIO buffer
(74HCT374) output corrected.
5.10. SMPS doesn't give main power with S5V (standby5V) on
Check that
PWCNTL signal is (low at Pin 46 at STi5518 : main power on, high at Pin 46 at STi5518 :
main power off).
Ch1 DIGIT1
Ch3 DIGIT3
(Front cable)
Ch1 GPIO_CLK
HDT DVB SATELLITE STB
Ch2 DIGIT2
Ch4 DIGIT4
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