Sony HT-CT780, Service Manual

Page: 29 / 78

HT-CT780
29
No
Check the mounted state of connector
(CN1001), IC1002 and resistor (RB1001,
RB1002) on the MAIN board.
No
Replace the connector (CN1001),
resistor (RB1001, RB1002) on the
MAIN board or complete MAIN
board (When IC1002 on the MAIN
board is damaged).
No
Replace the connector (CN1004),
resistor (RB1015, RB1016) on the
MAIN board or complete MAIN
board (When IC1004 on the MAIN
board is damaged).
Replace the connector (CN1501,
CN1502), resistor (RB1501,
RB1502, RB1503, RB1504) on the
MAIN board or complete MAIN
board (When IC1501 on the MAIN
board is damaged).
The voltage of the following is about 3.3 V.
MAIN board: CN1004 pin 13 (CEC) The voltage of the following is about 3.3 V.
MAIN board: IC102 pin 140
Yes
No No
The voltage of the following (TMDS input
line) is about 3.0 V.
MAIN board: IC1002 pin 7, 8, 11 to 16
(In the case of HDMI IN 1 connection)
No No
Check the mounted state of connector
(CN1501, CN1502), IC1501 and resistor
(RB1501, RB1502, RB1503, RB1504) on
the MAIN board.
Yes
The voltage of the following (TMDS input
line) is about 3.0 V.
MAIN board: IC1501 pin 57 to 64
(In the case of HDMI IN 2 connection)
MAIN board: IC1501 pin 20 to 27
(In the case of HDMI IN 3 connection)
No
Check the mounted state of connector
(CN1004), IC1004 and resistor (RB1015,
RB1016) on the MAIN board.
Yes
The voltage of the following (TMDS output
line) is about 3.0 V.
MAIN board: IC1004 pin 40 to 47
(In the case of HDMI OUT connection)
Check the mounted state of
connector (CN1004), diode (D1002),
IC102 and resistor (R116) on the
MAIN board.
Replace the connector (CN1004),
diode (D1002), resistor (R116) on
the MAIN board or complete MAIN
board (When IC102 on the MAIN
board is damaged).
No
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