Akai LTC-32R5W4HCP, Service Manual

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15
MANI BOARD FAULT JUDGMENT
Getting rid of function's trouble
7.fuction part
（
dual SCART
）
By Peripheral equipment
t h e s i g n a l i s O K ?
N Y N Y
If Don 't di spl ay
t h e p i c t u r e
By Peripheral equipment
t h e s i gn al i s O K ?
In SCAR T sou rce ,
ha ve the au di o ou t
Maintenance E1,E2,E3,R44,R47 and
the relative netwouk have the signal ? PIN1
，
PIN12 of U10
have th e signal?
Maintenance or replace the
Peripheral signal equipment Maintenance or replace the
Peripheral signal equipment
Replace the corresponding organ Replace the IC 9E19
N Y
Maintenance U10 power supply
，
PIN9
，
PIN10 of the U10 is right or replace U10
s
tick up for
f
ront electrocircuit
Y N
Getting rid of function's trouble
8.fuction part
（
DVB
-
T
）
no DVB
-
T
'
S sound
The PIN8 of U32 >8.5 V ?
Or the PIN6 U22>3V?
DV B-T no au di o
The PIN8 of U32 >8.5 V ?
Or the PIN6 U22>3V?
DV B-T ha ve pi ct ur e?
C265,C266,C267,C268 have the output signal ?
Replace ZR3916X main IC
Y
N
Maintenance the U20 power supply and
relative network or replace the U20
Maintenance the front-enc curcuit
Y
N
Refenence DVB-T no picture Park
E41,E42have the outputsignal ?
N
Y
N
PI N2
，
PI N15 of U10 have the signa l?
Maintenance U10 supply power
，
PIN9
，
PIN10 of U10.the choose
right or replace U10 component.
Y
+- In Dou bl e SCAR T mod e