5-1 Trouble shooting Chart
VFD No display on Front Control Board
VFD No display on
Front Control Board
Go
Yes
Refer to CON503 on Power Board
No
Fix the connection XS601 on Front
Control Board and XP9 on Main
Board
No
Replace U22 on Main Board d, or
replace the Main Board
No
Check the U601 ON Front Control
Board pin 6 7,8,9 arrive the condition
XS601 6,9,7
No
Yes
Yes
Yes
Correct connection
No
Yes
Replace U601 or VFD
Check every supply voltage on Main Board
whether normal or not.
(XP9 PIN1:-24V, PIN3: 3.3V, PIN4: 12V)
Check voltage -24V, +3.3V,+12V on
Power Board at CON503 position and Front
Control Board(XS601 PIN1:-24V
PIN3:3.3V)
Check the power key(PAD607),
open/closed key(PAD603), source
key(PAD606) on Touch Board whether
work normally or not
Check Front Control Board signals CS,CLK,
Din/out
(XS601 PIN6: Din/out PIN7:CS PIN9:CLK)
Check whether bad solder exists on U601
on Front Control Board and XS601 of VFD,
Содержание HTS5520
Страница 17: ...3 FM Cable 4 5 1 2 Audio Cable HDMI Cable 2 3 ...
Страница 18: ...6 AAA x 2 2 4 ...
Страница 20: ...3 1 2 3 3 1 4 2 2 6 ...
Страница 58: ...7 16 7 16 Front Control Board Print layout Bottom side ...
Страница 59: ...7 17 7 17 Karaoke and USB Board Print layout Bottom side Encoder Board Print layout Bottom side ...
Страница 60: ...Touch Panel Board Print layout Top and Bottom side 7 18 7 18 ...
Страница 61: ...Amplifier Board Print layout Top and Bottom side 7 19 7 19 ...
Страница 62: ...Power Board Print layout Bottom side 7 20 7 20 ...
Страница 63: ...Main Board Print layout Top side 7 21 7 21 ...