Sony rdr-gxd455 Service Manual page 76

QQ
3 7 63 1515 0
DTV mode Error
Is the 1pin of T_U221-3.3V ,
the 3pin of T_U231-1.5V ok?
Is the 5pin,6pin of
T_U441 , the 5pin,6pin of T_U461
ok?
Is the DDR Clock
T_R510, T_R511 ok?
TE
L 13942296513
Is the DATA
(T_RP402, T_RP403) and the
DCLK(T_R401) from the
TUNER (E1) ok?
Change the DJACK PCB
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.
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No
Yes
No
Yes
No
Yes
No
Yes
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8
Check the T_A3.3V line and
T_D1.5V line.
Check the I2C signal line from
MICOM to T_U441 and T_U461.
Change the T_U1
Q Q
3 6 7 1 3
Check the voltage and the
DATA,DCLK from E1.
u163
.
6-16E
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
# Nomal level
: 1pin - 5V
3pin - 5V
5pin - 33V
12pin - 3.3V
15pin - 1.2V
m
co
9 9
2 8 9 9