5-7 Trouble shooting Chart
Tuner FM does not work
Tuner FM does not work
Go
Yes
Check whether U6 and U10 work good
or not? And fix it or replace the main
board.
No
Check Main Board tuner power supply
circuit.
No
Change the Tuner IC
No
Yes
Yes
No
Yes
Replace main Board
Check
Main Board U4 power
supply circuit
Check v3.3V at Tuner IC
(Pin2) whether right or not
Check Tuner module IC Pin14,
Pin15 normal or not
Check voltage at Q28 C
electrode
(+5V) on Main Board whether normal
or not
Check the U8 PIN25, PIN26, I2C
output on Main Board normal or not
Содержание HTB5540D/94
Страница 13: ...3 4 5 1x 2 3 ...
Страница 21: ...X AUDIO IN 2 1 1 3 5MM STEREO 3 USB 2 2 11 ...
Страница 22: ...X 1 LAN LAN 1 2 3 2 12 ...
Страница 46: ...7 8 7 8 Touch Board Print layout bottom side ...
Страница 47: ...7 9 7 9 Touch Board Print layout top side ...
Страница 48: ...7 10 7 10 Front Control Board Print layout bottom side ...
Страница 49: ...7 11 7 11 Front Control Board Print layout top side ...
Страница 50: ...7 12 7 12 Power Board Print layout ...
Страница 51: ...7 13 7 13 Amplifier Board Print layout bottom side ...
Страница 52: ...7 14 7 14 Amplifier Board Print layout top side ...
Страница 57: ...10 1 10 1 Exploded View for HTB5540D 12 94 93 ...
Страница 58: ...10 2 10 2 Exploded View for HTB5540D 51 98 ...