Sony HT-CT380, Руководство по обслуживанию

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HT-CT380/CT381
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4. The video and audio of HDMI is not outputted
The video and audio of HDMI is not
outputted.
The voltage of the following is 1.0 V.
MAIN board: IC3105 pin 1
The voltage of the following is 3.3 V.
MAIN board: IC3106 pin 1
The voltage of the following is 5.0 V.
MAIN board: IC3102 pin 5
MAIN board: IC3107 pin 4
The voltage of the following is 3.3 V.
MAIN board: IC3109 pin 43 (RESET_N)
Vibrator (X3101) on the MAIN board is
oscillated.
Yes
Yes
The voltage of the following is 4.9 V.
MAIN board: CN3106
pin 19 (HOT PLUG DET)
Yes
Check the area surrounding IC3102,
IC3105, IC3106 and IC3107 on the
MAIN board.
No
No
No
Check the HOT PLUG DET line
(mounted state of capacitor (C3164) and
resistor (R3199, R3201, R3202)) on the
MAIN board.
No
Check the mounted state of coil (L3109
to L3114) on the MAIN board.
Check the IC3109 on the MAIN board
and replace the complete MAIN board.
The voltage of the following is 3.3 V.
MAIN board: CN3100, CN3101, CN3102,
CN3106 pin 13 (CEC)
Check the diode (D1010) and IC1002
on the MAIN board.
Yes
Yes
No
The voltage of the following (TMDS input
line) is about 3.0 V.
MAIN board: IC3109 pin 24 to 31
(In the case of HDMI IN 1 connection)
MAIN board: IC3109 pin 35 to 42
(In the case of HDMI IN 2 connection)
MAIN board: IC3109 pin 16 to 23
(In the case of HDMI IN 3 connection)
No
Check the mounted state of coil (L3107,
L3108) and jumper resistor (RB3108,
RB3109) on the MAIN board.
Check the IC3109 on the MAIN board
and replace the complete MAIN board.
Yes
The voltage of the following (TMDS
output line) is about 3.0 V.
MAIN board: IC3109 pin 77 to 80 and
82 to 85
Check the area surrounding RESET line
and vibrator (X3101) on the MAIN board.