DOWNLOAD Sony HT-XT3 Service Manual ↓ Size: 7.39 MB | Pages: 92 in PDF or view online for FREE

Model
HT-XT3
Pages
92
Size
7.39 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
ht-xt3.pdf
Date
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Sony HT-XT3 Service Manual ▷ View online

HT-XT3
25
SECTION 4
TROUBLESHOOTING
1.  “PRTECT” is displayed on the fl uorescent indicator tube after turning the power on
2.  The video of HDMI is not displayed normally
Yes
Yes
Yes
Check that each power supply is supplied.
Refer to the “Power is not turned on” on page 26.
Check that only the digital output (HDMI) is 
affected.
Check that the input voltage of the 
following pin is around 7.4V - 8V MB-1408 
board IC5014 pin 5 (VIN).
Yes
Yes
Yes
Check that the output voltage of the 
following pin is 5V. MB-1408 board IC5014 
pin 4 (VOUT).
Check that there are no abnormalities in 
MB-1408 board CN5012.
Perform other analysis.
No
Check the settings on the menu screen.
No
Refer to the “Power is not turned on” on page 26.
No
Check that the input voltage of the following pin 
is 3.3V.
MB-1408 board IC5014 pin 1 (CONT).
Exchange the MB-1408 board IC5014.
Part No. :  6-718-999-01
Description:  IC MM1839A50NRE
No
Refer to the “Power is not 
turned on” on page 26.
No
Exchange the MB-1408 board CN5012.
Note: When CN5012 is exchange, be careful of 
the quality of soldering enough.
Part No. :  1-821-398-41
Description:  HDMI CONNECTOR (HDMI OUT 
ARC HDCP 2.2)
No
Check that AMP board IC6001 and 
IC6004 pin 27, 28, 32, 35, 39 and 
40 are short to GND.
Check and replace the speaker.
Yes
No
No
“PRTECT” is displayed on the 
fluorescent indicator tube after 
turning the power on.
Yes
Yes
Exchange AMP board IC6001 and 
IC6004 (6-721-742-01)
AMP board damage. 
Exchange complete AMP board.
“PRTECT” is not displayed, when 
removing the speaker and turning 
the power on.
HT-XT3
26
3.  The sound is not outputted
4.  Power is not turned on
Yes
No
No
No
Check that the signal is input to AMP board 
IC6002 pin 24 and 27.
Change FFC insert to AMP 
board CN6004.
Exchange AMP board IC6002 
(6-718-105-01)
Exchange AMP board IC6001 
and IC6004 (6-721-742-01)
Check that the PWM signal is outputted from the 
following pins.
AMP board IC6002 pin 38, 39, 40, 41, 48 and 49.
Check that the signal is outputted from AMP 
board IC6001 and IC6004
pin 27, 28 and 32 (SP FRONT R)
pin 35, 39 and 40 (SP FRONT L)
Yes
Yes
The sound is not outputted.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Power is not turned on.
Reprogram IF - con.
Check AMP board CN6007 pin 2 is 
12V.
Check pin 1 of CN301 in MB-1408 
board.
Yes
Check MB-1408 board IC3004 pin 1
Check X3001 on the MB-1408 board 
whether is oscillating or not after AC IN.
Check the reset signal of pin 49 of 
IC3004 on MB-1408 board during AC 
IN or power on (there is a quick low 
pulse to indicate reset signal).
Check PCONT1: pin 119
Check PCONT3: pin 123
Check SPARTA_PCONT: pin 65
Check each voltage with reference to 
the schematic diagram and check that 
there is no problem in them.
Check the related IC on MB-1408 
board.
The voltage of the following is 
20V/32V SWITCHING REGULATOR 
(3L405W): CN101 pin 2 to 4 and 8.
Replace the SWITCHING REGULATOR 
(3L405W).
Check IC6003 function.
Check pin 3 of CN703 in MB-1408 board.
Replace MB-1408 board.
Replace MB-1408 board.
Replace MB-1408 board.
Replace MB-1408 board.
Replace MB-1408 board.
Power supply IC is damaged. Exchange the 
power supply IC.
No
No
No
No
No
No
No
No
No
HT-XT3
HT-XT3
27
27
5-1.  BLOCK  DIAGRAM - DIGITAL Section -
SECTION  5
DIAGRAMS
HDMI TRANSCEIVER
IC3506
SoC
IC101 (1/3)
T1X1- 146
T1X1+ 147
T1X0- 144
T1X0+ 145
T1XC- 142
T1XC+ 143
T1X2- 148
T1X2+ 149
TX_HPD1 108
R5PWR5V 100
TXDSDA1 109
TXDSCL1 110
HDMI RECEIVER
IC5001
R2X0+ 31
R2X0- 30
R2X1+ 33
R2X1- 32
R2X2+ 35
R2X2- 34
R2XC+ 29
R2XC- 28
CBUS_HPD2 86
R2PWR5V 87
DSDA2 84
R1PWR5V 83
R5X2+ 64
R5X2- 63
R5X1+ 62
R5X1- 61
R5X0+ 60
R5X0- 59
R5XC+ 58
R5XC- 57
CBUS_HPD5 99
DSCL5 98
DSDA5 97
RX0P 12
RX0N 11
7
9
RX1P 14
RX1N 13
4
6
RX2P 16
RX2N 15
1
3
RXCP 8
RXCN 7
10
TX_HPD
DATA0+
DATA0-
DATA1+
DATA1-
DATA2+
DATA2-
CLOCK+
CLOCK-
SDA(5V)
SCL(5V)
HOT PLUG DET
38
RPWR5V 3
19
12
16
+5V POWER
18
CEC
13
15
DSDA 76
DSCL 75
D27
D28
E27
E28
F27
F28
G27
G28
AD28
AB25
AB26
CN5001
HDMI IN 1
HDCP 2.2
HDMI RECEIVER
IC5010
T0X1- 156
T0X1+ 157
T0X0- 154
T0X0+ 155
T0XC- 152
T0XC+ 153
T0X2- 158
T0X2+ 159
TX_HPD0 105
R5PWR5V 100
TXDSDA0 106
TXDSCL0 107
TX0P 43
TX0N 42
7
9
TX1P 45
TX1N 44
4
6
TX2P 47
TX2N 46
1
3
TXCP 41
TXCN 40
10
TX_CBUS_HPD
DATA0+
DATA0-
DATA1+
DATA1-
DATA2+
DATA2-
CLOCK+
CLOCK-
SDA(5V)
SCL(5V)
HOT PLUG DET
38
33
69
113
114
104
19
12
16
+5V POWER
18
15
TDSDA 67
TDSCL 66
CN5012
HDMI OUT
ARC
HDCP 2.2
EEPROM
IC5000
EEPROM
IC5009
+5V REG.
IC5014
CEC
13
RESERVE(NC)
14
ARC_SPDIF
CEC
SPARTA_RST
RGT0_RST
RGR0_RST
5VPWR
>001B
MAIN SECTION
(Page 29) 
>002B
POWER SUPPLY
SECTION
(Page 31) 
BUFFER
Q602
UNSW12V
1, 2, 5, 6
1, 2, 5, 6
CN3502
HDMI
IN 2
CN3503
HDMI
IN 3
42
41
7
9
4
6
1
3
10
DATA0+
DATA0-
DATA1+
DATA1-
DATA2+
DATA2-
CLOCK+
CLOCK-
SDA(5V)
SCL(5V)
+5V POWER
HOT PLUG DET
18
CEC
13
12
16
15
88
89
7
9
4
6
1
3
10
DATA0+
DATA0-
DATA1+
DATA1-
DATA2+
DATA2-
CLOCK+
CLOCK-
SDA(5V)
SCL(5V)
+5V POWER
HOT PLUG DET
18
CEC
13
12
16
15
19
19
90
R3X0+
R3X0-
44
43
R3X1+
R3X1-
46
45
R3X2+
R3X2-
40
39
R3XC+
R3XC-
DSDA3
DSCL3
CBUS_HPD3
50
49
92
93
94
R4X0+
R4X0-
52
51
R4X1+
R4X1-
54
53
R4X2+
R4X2-
48
47
R4XC+
R4XC-
DSDA4
DSCL4
91 R3PWR5V
95 R4PWR5V
CBUS_HPD4
P27
P28
AF27
AF28
AE25
HDMI_RX_0
HDMI_RX_0B
N27
N28
HDMI_RX_1
HDMI_RX_1B
M27
M28
HDMI_RX_2
HDMI_RX_2B
R27
R28
HDMI_RX_C
HDMI_RX_CB
DDC_SDA_RX
DDC_SCL_RX
HTPLG_RX
AD25 PWR5V_RX
CH2_P
CH2_M
CH1_P
CH1_M
CH0_P
CH0_M
CLK_P
CLK_M
HDMISCK
HDMISD
HTPLG
44
45
76
75
38
TX1N
TX1P
42
43
TX0N
TX0P
40
41
TXCN
TXCP
46
47
TX2N
TX2P
DSDA
DSCL
TX_HPD
3 RPWR5V
CS,
DO(IO1),
DI(IO0),
CLK
61, 64, 63, 60
SPI_CLK,
SPI_MOSI,
SPI_MISO,
SPI_CS0
61, 64, 63, 60
SPI_CLK,
SPI_MOSI,
SPI_MISO,
SPI_CS0
12
11
76
75
4
RX0P
RX0N
14
13
RX1P
RX1N
16
15
RX2P
RX2N
8
7
RXCP
RXCN
DSDA
DSCL
RX_HPD
3 RPWR5V
VDDIO33_33
RESET
XT
ALOUT
XT
ALIN
MHL1_CD1/GPIO1
X3501
28.224MHz
CS,
DO(IO1),
DI(IO0),
CLK
‡6LJQDOSDWK
           : USB
           : AUDIO (DIGITAL)
           : LAN
           : WIRELESS LAN/BLUETOOTH
           : VIDEO
‡5FKLVRPLWWHGGXHWR
VDPHDV/FK
TXVP_0 AB28
TXVN_0 AB27
1
2
3
6
CN503
CARD WLAN/
BT COMBO
CN502
USB_DP_P1 A4
USB_DM_P1 B4
CN1553
D+
D-
TXVP_1 AC28
TXVN_1 AC27
LAN (100)
USB_DP_P2 AA27
USB_DM_P2
DP
DM
AA28
HT-XT3
HT-XT3
28
28
5-2.  BLOCK  DIAGRAM - MEMORY Section -
SD-RAM
IC102
RWE_
RA0 - RA14
RDQ0 - RDQ15
RCS_
AE9
AF13
L3
L2
WE
RBA0
AC10
M2
BA0
RBA1
AC15
N8
BA1
RBA2
AG10
M3
BA2
CS
RCAS_
RRAS_
AD10
AE11
K3
J3
CAS
RAS
RCKE
AH13
K9
CKE
RCLK0
AG17
J7
CK
RCLK0_
AH17
K7
CK
RDQM1
RDQS1
AE17
AH18
D3
C7
DMU
DQSU
RDQS1_
RDQM0
AG18
AH19
B7
E7
DQSU
DML
RODT
AE10
K1
ODT
RDQS0
AG16
F3
DQSL
RDQS0_
AH16
G3
DQSL
T2
RESET
A0 - A12,
NC, NC
DQL0 - DQL7,
DQU0 - DQU7
SD-RAM
IC103
RDQ16 - RDQ31
RCLK1
AG6
RCLK1_
AH6
RDQM3
RDQS3
AH4
AH7
RDQS3_
RDQM2
AG7
AC8
RDQS2
AG5
RDQS2_
AH5
A0 - A12,
NC, NC
DQL0 - DQL7,
DQU0 - DQU7
NAND FLASH
IC2001
SoC
IC101 (2/3)
NFD0 - NFD7
D0A0 - D0A14
D0A0 - 
D0A14
NFWEN AE24
18 WE
NFREN AE21
8 RE
NFCEN
NFRBN
AF22
AD21
9
7
CE
RY/BY
NFALE
NFCLE
AF24
AD22
17
16
ALE
CLE
19
WP
IO1 - IO8
X401
27MHz
NS_XTALO
NS_XTALI
C28
C27 
NAND_RESET
T2
RESET
RRESET
AD9
L3
L2
WE
M2
BA0
N8
BA1
M3
BA2
CS
K3
J3
CAS
RAS
K9
CKE
J7
CK
K7
CK
D3
C7
DMU
DQSU
B7
E7
DQSU
DML
K1
ODT
F3
DQSL
G3
DQSL
         
>003B
MAIN SECTION
(Page 29) 
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