Sony HT-CT780 Service Manual ▷ View online
HT-CT780
29
No
Check the mounted state of connector
(CN1001), IC1002 and resistor (RB1001,
RB1002) on the MAIN board.
(CN1001), IC1002 and resistor (RB1001,
RB1002) on the MAIN board.
abnormality
Replace the connector
(CN1001), resistor (RB1001,
RB1002) on the MAIN board
or complete MAIN board
(When IC1002 on the MAIN
board is damaged).
(CN1001), resistor (RB1001,
RB1002) on the MAIN board
or complete MAIN board
(When IC1002 on the MAIN
board is damaged).
abnormality
Replace the connector
(CN1004), resistor (RB1015,
RB1016) on the MAIN board
or complete MAIN board
(When IC1004 on the MAIN
board is damaged).
(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).
(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)
MAIN board: CN1004 pin 13 (CEC)
The voltage of the following is about 3.3 V.
MAIN board: IC102 pin 140
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)
line) is about 3.0 V.
MAIN board: IC1002 pin 7, 8, 11 to 16
(In the case of HDMI IN 1 connection)
No
abnormality
Check the mounted state of connector
(CN1501, CN1502), IC1501 and resistor
(RB1501, RB1502, RB1503, RB1504) on
the MAIN board.
(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)
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.
(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)
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.
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).
(CN1004), diode (D1002),
resistor (R116) on the MAIN
board or complete MAIN
board (When IC102 on the
MAIN board is damaged).
abnormality
– From page 28 –
HT-CT780
30
3. The sound is not outputted
The voltage of the following is 3.3 V.
MAIN board: IC503 pin 18 (CLIP)
MAIN board: IC503 pin 18 (CLIP)
After entering to the tone test mode (Refer
to 2-9. Tone test mode on the SECTION 3
TEST MODE on page 24), test signal is
outputted.
to 2-9. Tone test mode on the SECTION 3
TEST MODE on page 24), test signal is
outputted.
The sound is not outputted.
No
Yes
Check and repair the signal path for
being inputted to the DSP (IC308) on
the MAIN board.
(DSP (IC308) and digital power amplifier
(IC503) on the MAIN board is OK)
being inputted to the DSP (IC308) on
the MAIN board.
(DSP (IC308) and digital power amplifier
(IC503) on the MAIN board is OK)
Yes
Check and repair the signal path from
the input in turn.
the input in turn.
Yes
No
The voltage of the following is 3.3 V
in the state of “VOL 0”.
MAIN board: IC102 pin 57 (AMP_OVF1)
in the state of “VOL 0”.
MAIN board: IC102 pin 57 (AMP_OVF1)
No
Replace the IC503 on the MAIN board.
4. Power is not turned on
Power is not turned on.
The voltage of the following is 28 V.
POWER board: CN902 pin 6 to 8
The voltage of the following is 12 to
18 V.
POWER board: CN902 pin 2
POWER board: CN902 pin 6 to 8
The voltage of the following is 12 to
18 V.
POWER board: CN902 pin 2
The voltage of the following is 3.3 V.
MAIN board: IC102 pin 46
MAIN board: IC102 pin 46
Yes
POWER board is damaged.
Yes
Yes
Vibrator (X101) on the MAIN board
is oscillated after AC input.
is oscillated after AC input.
Yes
Fuse (F901) on the POWER board
conduct the electricity.
conduct the electricity.
No
No
No
Replace the vibrator (X101) on the MAIN
board or complete MAIN board.
board or complete MAIN board.
The reset signal is inputted to pin
49 of IC102 on the MAIN board
after AC input.
49 of IC102 on the MAIN board
after AC input.
Check and repair the area surrounding
IC106 on the MAIN board.
IC106 on the MAIN board.
Yes
Yes
No
Replace the complete MAIN board.
No
Replace the fuse (F901) on the POWER
board.
board.
No
Repair the capacitor (C623), diode
(D105) or IC105 on the MAIN board.
(D105) or IC105 on the MAIN board.
The voltage of the following is 3.3 V.
MAIN board: IC105 pin 1
MAIN board: D105 cathode side
The voltage of the following is 4.1 V.
MAIN board: C623 plus side
MAIN board: IC105 pin 1
MAIN board: D105 cathode side
The voltage of the following is 4.1 V.
MAIN board: C623 plus side
HT-CT780
HT-CT780
31
31
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM - HDMI Section -
SYSTEM CONTROLLER
IC102 (1/4)
7
DATA0+
9
DATA0–
4
DATA1+
6
DATA1–
1
DATA2+
3
DATA2–
10
CLOCK+
12
CLOCK–
16
SDA (5V)
15
SCL (5V)
19
HOT PLUG DET
18
+5V POWER
13
CEC
HDMI TRANSCEIVER
IC1501
23
155
154
154
157
156
156
159
158
158
153
152
152
106
107
107
105
R1X0+
22 R1X0–
25 R1X1+
24 R1X1–
24 R1X1–
27 R1X2+
26 R1X2–
26 R1X2–
21 R1XC+
20 R1XC–
20 R1XC–
80 DSDA1
81 DSCL1
81 DSCL1
82 CBUS_HPD1
83 R1PWR5V
T0X0+
T0X0–
T0X0–
T0X1+
T0X1–
T0X1–
T0X2+
T0X2–
T0X2–
T0XC+
T0XC–
T0XC–
TXDSDA0
TXDSCL0
TX_HPD0
7
DATA0+
9
DATA0–
4
DATA1+
6
DATA1–
1
DATA2+
3
DATA2–
10
CLOCK+
12
CLOCK–
16
SDA (5V)
15
SCL (5V)
19
HOT PLUG DET
14
RESERVE (NC)
13
CEC
CN1004
ARC
[HDCP 2.2]
HDMI OUT
67
CSDA
7
DATA0+
9
DATA0–
4
DATA1+
6
DATA1–
1
DATA2+
3
DATA2–
10
CLOCK+
12
CLOCK–
16
SDA (5V)
15
SCL (5V)
19
HOT PLUG DET
18
+5V POWER
13
CEC
50 R4X0+
49 R4X0–
49 R4X0–
52 R4X1+
51 R4X1–
51 R4X1–
54 R4X2+
53 R4X2–
53 R4X2–
48 R4XC+
47 R4XC–
47 R4XC–
92 DSDA4
93 DSCL4
93 DSCL4
94 CBUS_HPD4
95 R4PWR5V
7
DATA0+
9
DATA0–
4
DATA1+
6
DATA1–
1
DATA2+
3
DATA2–
10
CLOCK+
12
CLOCK–
16
SDA (5V)
15
SCL (5V)
19
HOT PLUG DET
18
+5V POWER
13
CEC
CN1502
3
CN1501
2
CN1001
1
[HDCP 2.2]
60 R5X0+
98 HDMI (9575+9679)_SDA
66
CSCL
97 HDMI (9575+9679)_SCL
68
INT
99 HDMI (9575) INT
69
RESET
102
VCC33OUT
104 HDMI (9575) RESET
20 HDMI (9678)_SDA
21 HDMI (9678)_SCL
23 HDMI (9678)_INT
21 HDMI (9678)_SCL
23 HDMI (9678)_INT
22 HDMI (9678)_RESET
140 CEC_TX_RX
59 R5X0–
62 R5X1+
61 R5X1–
61 R5X1–
64 R5X2+
63 R5X2–
63 R5X2–
58 R5XC+
57 R5XC–
57 R5XC–
97 DSDA5
98 DSCL5
98 DSCL5
99 CBUS_HPD5
100 R5PWR5V
SD0_0 124
SD0_1 126
SD0_2 127
SD0_3 128
SD0_1 126
SD0_2 127
SD0_3 128
SPDIF0_OUT 130
MCLK 125
WS0_OUT 121
SCK0 122
MUTEOUT 129
HDMI_D1
HDMI_D0
HDMI_D2
HDMI_D3
HDMI_D3
SP_SPDIF
HDMI_MCK
HDMI_BCK
HDMI_LRCK
RX_MUTE
ARC_SPDIF
HDMI_D0 – HDMI_D3, SP_SPDIF, HDMI_MCK,
HDMI_BCK, HDMI_LRCK, RX_MUTE, ARC_SPDIF
>001B
Q101
58 HDMI_IN1_INT
59 HDMI_IN1_RESET
Q103
Q102
: VIDEO
: AUDIO (DIGITAL)
SIGNAL PATH
XTALOUT 113
XTALIN 114
X1501
27MHz
HDMI IN
HDMI RECEIVER
IC1002
12 RX0P
11 RX0N
11 RX0N
14 RX1P
13 RX1N
13 RX1N
16 RX2P
15 RX2N
15 RX2N
8 RXCP
7 RXCN
7 RXCN
76 DSDA
75 DSCL
75 DSCL
38 TX_HPD
3
69 68
RPWR5V
CSDA
CSCL
TX0P 43
TX0N 42
TX1P 45
TX1N 44
TX2P 47
TX2N 46
TXCN 40
TXCP 41
20 34
INT
RESETN
SERIAL FLASH
IC1001
64
SPI_MISO
63
SPI_MOSI
60
SPI_CLK
61
SPI_CS0
DO (IO1)
2
DI (IO0)
5
CLK
6
CS
1
HDMI_SDA
HDMI_SCL
RGR0_INT
RGR0_RST
HDMI_SDA
HDMI_SCL
RGR0_INT
RGR0_RST
SERIAL FLASH
IC1003
64 SPI_MISO
63 SPI_MOSI
60 SPI_CLK
61 SPI_CS0
63 SPI_MOSI
60 SPI_CLK
61 SPI_CS0
DO (IO1) 2
DI (IO0) 5
CLK 6
CS 1
12 RX0P
11 RX0N
11 RX0N
14 RX1P
13 RX1N
13 RX1N
16 RX2P
15 RX2N
15 RX2N
8 RXCP
7 RXCN
7 RXCN
76 DSDA
75 DSCL
75 DSCL
4 RX_HPD
69
CSDA
68
CSCL
20
INT
34
RESETN
43
42
42
45
44
44
47
46
46
41
40
40
67
66
66
38
TX0P
TX0N
TX1P
TX1N
TX2P
TX2N
TXCP
TXCN
TDSDA
TDSCL
TX_CBUS_HPD
HDMI TRANSMITTER
IC1004
BUFFER
IC1006
(Page 32)
HT-CT780
HT-CT780
32
32
5-2. BLOCK DIAGRAM - MAIN Section -
SYSTEM CONTROLLER
IC102 (2/4)
ASEL0
J1801
TV
DIGITAL IN
ANALOG IN
OPTICAL
RECEIVER
IC1801
A/D CONVERTER,
DIGITAL AUDIO INTERFACE RECEIVER
IC303
L/R_IN
63
MCLK_IN
54
BCLK_IN
42
LRCK_IN
59
FLAG2
81
A/D_2CH
57
RXIN4
31
MIX AMP
IC302
VINL
47
VINR
48
MPIO_A3
6
MPIO_C1
8
MPIO_C2
9
MPIO_C3
10
RXIN3
32
MPIO_A0
3
MPIO_A1
4
MPIO_A2
5
DOUT 17
L/R OUT 48
128
DIR_DO
MDO
5
DIR_ZERO
8
DSP_MISO
26
DSP_MOSI
27
DSP_SPICLK
28
DSP_SPIDS
29
DSP_INTR
32
DSP_RESET
30
SF_HOLD_DSP
31
DIR_XSTATE
3
23
MDI
24
MC
25
DIR_HCE
MS
10
26
DIR_RST
RST
4
DIR_DI (MC_DIRDO)
6
DIR_CLK
7
34
XTO
40
XTI
39
MISO
20
MOSI
19
BOOT_CFG1
6
DO (IO1)
2
DI (IO0)
5
CLK
6
CS
1
HOLD (IO3)
7
SPICLK
21
DSP_CS
24 23
DPI_P05
77
FLAG0
98
RESET
EEPROM
IC101
SDA
EEPROM data in/out
EEPROM clock
5
SCL
6
116
117
117
MFI
IC104
SDA
CP_DATA
CP_CLK
2
SCL
6
42
43
43
CP_RESET
RST
7
41
MC_BT_RXD0
135
MC_BT_TXD0
134
MC_BT_RTS
131
BT_MUTE
133
BT_RST
136
MC_BT_CTS
132
BT_UART_TX
L_OUT–
L_OUT+
R_OUT+
BT_UART_RX
BT_UART_RTS
BT_UART_CTS
BT_UART_CTS
MUTE
RESET
BT1
Bluetooth MODULE
R_OUT–
SL/SR_IN
40
MPIO_B1 12
C/SW_IN
58
MPIO_B2 13
SBL/SBR_IN
62
MPIO_B3 14
DIR_IN
65
ANALOG AUDIO SELECTOR
IC301
A
X0
12
X1
14
Y1
5
Y0
1
X 13
Y 3
10
C/SW1_OUT 56
BCLK_OUT 60
LRCLK_OUT 61
XTAL 13
CLKIN 12
SCKO 20
BCK 19
LRCK 18
NPCM 2
DIR_ERROR
9
HDMI_MUTE_ON
106
HDMI_MUTE_DET
105
HDMI_NLPCM
62
SEL_HDMI
129
LEVEL SHIFT
IC311 (2/2)
SHIFT
CONTROL
IC310
X301
24.576MHz
X302
25MHz
DSP
IC308
AMP_D1FLFR
MCK
DSP_LRCK
DSP_BCK
AMP_D3CSW
AMP_D1FLFR, AMP_D3CSW,
MCK, DSP_BCK, DSP_LRCK
>002B
: Bluetooth
: AUDIO (ANALOG)
: AUDIO (DIGITAL)
SIGNAL PATH
HDMI_D1
HDMI_D0
HDMI_D2
HDMI_D3
SP_SPDIF
HDMI_D3
SP_SPDIF
RXIN1
35
ARC_SPDIF
HDMI_MCK
HDMI_BCK
HDMI_LRCK
HDMI_MCK
HDMI_BCK
HDMI_LRCK
RX_MUTE
HDMI_D0 – HDMI_D3, SP_SPDIF, HDMI_MCK,
HDMI_BCK, HDMI_LRCK, RX_MUTE, ARC_SPDIF
HDMI_BCK, HDMI_LRCK, RX_MUTE, ARC_SPDIF
>001B
D103
DATA SELECTOR
IC309
ERROR 1
SEL
2A
1A
5
2B
6
1B
3
2
MPIO_C0 7
4A
4B
4B
13
14
2Y
FLAG1
80
1Y
4Y
7
4
12
1
Q302
D104
SWITCHING
IC311 (1/2),
Q303
BUFFER
IC312
RF1
RF MODULATOR
(SWA12-4V TX)
8
DIN_TX
12
BCK1_TX
11
LRCK1_TX
17
SDA_STX
18
SCL_STX
20
INT
19
RESETN
CN103
WS_RST
19
WS_INT
16
WS_SCL
18
WS_SDA
17
SERIAL FLASH
IC307
Q301
D302
(Page 31)
(Page 33)
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