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REPAIR INSTRUCTIONS
All functions
are not working
All functions
have no sound
Aux In has
no sound
MP3 In has
no sound
coaxial /optical
input has no sound
Check all cables of
system are loose or bad
insert
Re-insert and fix
the cable
Standby led of panel
whether is light
Check IC101 of main board
and their conjoint parts
check output of
BK5V on the top
of power board
check pin1~pin5 of
CN501(on the top of main
pcb) whether are +26.5V
R5001 whether is+12V
check pin1of C609 (on
the top of main pcb)
whether is +3.3V
check pin3 and pin13 of
IC301(on the top of main
pcb) output whether are ok
check IC502, IC503 of
MAIN PCB and their
conjoint parts whether
are OK
check 3 and pin4 of
IC303(on the top of main
pcb)output whether are 5V
and 3.3V
check IC303 of main pcb
and their conjoint parts
whether are OK
check IC501 of main pcb
and their conjoint parts
whether are ok
Check switch power and
the conjoint parts
check pin7and pin16 of IC301
(on the top of main pcb) output
whether is +/-5V and their
conjoint parts whether are OK
check IC303 and FB102
of main pcb whether are
OK
check MP3 music output is ok
check mp3 jack connect is ok
check mp3 jack cable and
CN301 connect of mian pcb
is ok
check pin2 and pin15 of IC301
on the top of main pcb whether
have music input
check IC301 of main pcb is OK
Keep CN301 of main board has
Music input
check from CN301 to IC301
conjoint parts
check C330 is ok
check R332 is 3.3V,
check C331 is ok
check their conjoint parts of
JK304and JK303
check their conjoints part of L302
L303
check pin3 /9/ 22 of IC302
(on the top of main pcb) output
whether are all 3.3V
check IC302 of main pcb
and their conjoint parts
All functions
are not working
All functions
have no sound
Aux In has
no sound
MP3 In has
no sound
coaxial /optical
input has no sound
IPOD In have
no sound
HDMI Repeater In/out
has no Video or sound
IPOD In have
no sound
Check IC301 of main
pcb is OK
check JK305 to IC304
and their conjoint parts
whether are ok
Check Pin1/7of IC304
(on the topof main pcb )
have music output.
Check Ipod Dock output
signal is ok Check Ipod
jack connect is ok
Please keep having music
input signal, Check JK305
is OK
HDMI Repeater In/out
has no Video or sound
Check Pin2 of IC603 is1.8V
Pin2 of IC604 IS 3.3V of
Repeater pcb
Check IC601 of Repeater pcb
and conjoint part FB106 FB604
FB605 FB608 FB609 whether
is 1.8V FB607 whether is 3.3V
Check Pin1/3 of CN601
Repeater PCB is BK5V/+5V
and their conjoint part whether is OK
Check IC601 of Repeater pcb
whether is OK
