HSS-730/830 & UFD505/515 SERVICE MANUAL HDT DVB SATELLITE STB
Page
23
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
Ch2 DIGIT2
Ch3 DIGIT3
Ch4 DIGIT4
(Front cable)
Ch1 GPIO_CLK
Summary of Contents for HSS-730
Page 28: ......
Page 29: ......
Page 30: ......
Page 31: ......
Page 32: ......
Page 33: ......
Page 34: ......
Page 35: ......
Page 36: ......
Page 39: ......
Page 40: ......
Page 41: ......
Page 42: ......
Page 43: ......
Page 44: ......
Page 45: ......
Page 46: ......
Page 47: ......
Page 48: ......