Trouble Shooting Guide - Akai HTA-1150 Service Manual

4. TROUBLE SHOOTING GUIDE

TROUBLE SHOOTING AND RESOLUTION
1
check whether the vice-level
I alternating voltage8V
of transformer is ok or not.
check whether the current
transfer output voltsd. is ok
or not.
check whether the power
voltage
4053 are ok or not.
judge whether 1C3,-IC4
are ok or not
2
No sound
No sound in AC-3./5.1
NORMAL state
OK
NOT
OK
5.1V of 1IC3,1IC4,
OK
sound is ok in AC -3 state,
but no sound in AUX stereo
check whether the 1IC4052
power voltage 5.1V is ok or
not.
OK
judge whether the 1IC10 4558,
is ok or not by inputing signal
Check whwther 2CD11,
2CD12 are ok or not
NOT
replace the
transformer
check whether the
capacitor 2CD3,
IC 7805 are ok or not.
check whether
NOT
the 2CD4are ok or
not.
NOT
replace IC3,IC4
No sound
NOT
check whether the
capacitor 2CD3,
IC 7805 are ok or not.
NOT
replace 1IC10
4558,
NOT
replace 2CD11,
2CD12
SERVICE MANUAL
5