Sony HT-CT550W / STR-CT550WT Service Manual ▷ View online
STR-CT550WT
37
IC5103 MP2301ENE-LF-Z
SS
8
EN
7
COMP
6
FB
5
CURRENT
SENSE
AMPLIFIER
BS 1
IN 2
SW 3
GND 4
6
Q
Q
Q
S
R
R
CURRENT
COMPARATOR
OSCILLATOR
340kHz
LOCKOUT
COMPARATOR
ERROR
AMPLIFIER
SHUTDOWN
COMPARATOR
INTERNAL
REGULATORS
+
–
+
–
2.5V
6
PA
1.5V
0.3V
0.95V
0.8V
1.2V
5V
IC5105 TC74LVX4053FT (EL)
16
15 14
13
12
11
10
9
1
2
3
4
5
6
7
8
C
B
A
OX
IX
X-COM
Y-
C
O
M
VCC
GND
VEE
INH
OZ
Z-COM
IZ
OY
IY
C
OUT
IN
C
OUT
IN
C
OUT
IN
C
OUT
IN
C
OUT
IN
C
OUT
IN
LOGIC LEVEL
CONVER
TOR
– DISPLAY Board –
IC801 NJM2878F3-33 (TE2)
5
VIN
4
VOUT
2
GND
3
N.C.
1
CONTROL
BANDGAP
REFERENCE
THERMAL
PROTECTION
STR-CT550WT
38
IC802 PT6315
5
OSC
OSC
DATA
SELECTOR
6
DOUT
7
DIN
8
CLK
9
STB
10
KEY1
11
KEY2
SERIAL
INTERFACE
DISPLAY MEMORY
24 BITS x 12 WORDS
24-BIT OUTPUT
LATCH
12-BIT SHIFT
REGISTER
SEGMENT
DRIVER
TIMING GENERATOR
KEY SCAN
COMMAND
DECODER
DIMMING
CIRCUIT
KEY DATA MEMORY
(2 x 16 BITS)
4-BIT LATCH
1
LED1
2
LED2
3
LED3
4
LED4
24
16
16
12
4
8
8
4
8
27 SEG14/KS14
29 SEG16/KS16
30 VEE
28 SEG15/KS15
8
31 SEG17/GRID12
33 SEG19/GRID10
32 SEG18/GRID11
32 SEG18/GRID11
23 SEG10/KS10
24 SEG11/KS11
25 SEG12/KS12
26 SEG13/KS13
22
SEG9/KS9
21
SEG8/KS8
20
SEG7/KS7
19
SEG6/KS6
18
SEG5/KS5
17
SEG4/KS4
16
SEG3/KS3
15
SEG2/KS2
14
SEG1/KS1
MULTIPLEXED
DRIVER
34
SEG20/GRID9
35
SEG21/GRID8
36
SEG22/GRID7
37
SEG23/GRID6
39
GRID4
40
GRID3
41
GRID2
42
GRID1
43
VDD
44
VSS
13
VDD
12
VSS
38
SEG24/GRID5
GRID
DRIVER
– POWER Board –
IC910 STR-A6159M
1
SOURCE/OCP
8 D
7 D
7 D
5 STARTUP
6 NC
2
VCC
4
FB/OLP
3
GND
THERMAL
SHUTDOWN
DELAY
BUFFER
BLANKING
DISCHARGE
LATCH
INTERNAL
BIAS
UNDERVOLTAGE
LOCKOUT
OVER LOAD
PROTECTION
OVER VOLTAGE
PROTECTION
OVER
CURRENT
PROTECTION
OFF TIMER
DRIVE
+
–
–
S
R
PWM
LATCH
FEED
BACK
BACK
BIAS
BURST
Q
STR-CT550WT
39
IC920 STR-W6735N (US, Canadian and Taiwan models)
IC920 STR-W6765N (AEP and UK models)
IC920 STR-W6765N (AEP and UK models)
D 1
NC 2
S/GND 3
VCC 4
SS/OLP 5
FB 6
OCP/BD 7
DELAY
Q
R
S
+
–
–
+
–
–
+
–
Q
S
R
+
–
BOTTOM
SELECTOR
COUNTER
OSC
R
Q
S
SOFT START
+
–
–
OVP
REGULATOR
& ICONST
+
–
–
BURST
CONTROL
START/STOP
BURST
PROTECTION
LATCH
DRIVE
REGULATOR
OLP
BSD
BD
OCP
FB
Ver. 1.1
STR-CT550WT
40
• IC Pin Function Description
HDMI BOARD IC3000 R5F364A6DFB (HDMI CONTROLLER)
Pin No.
Pin Name
I/O
Description
1 to 5
NC
-
Not used
6
BYTE
I
External data bus width selection signal input terminal Fixed at “L” in this unit
7
CNVSS
I
Writing mode selection signal input from the system controller “L”: writing mode
8, 9
NC
-
Not used
10
RESET
I
Reset signal input from the system controller “L”: reset
11
XOUT
O
System clock output terminal (10 MHz)
12
VSS
-
Ground terminal
13
XIN
I
System clock input terminal (10 MHz)
14
VCC_3.3V
-
Power supply terminal (+3.3V)
15
NMI
I
Non-maskable interrupt signal input terminal Not used
16 to 18
NC
-
Not used
19
RX_RST
O
Reset signal output to the HDMI receiver “L”: reset
20
RX_INT
I
Interrupt signal input from the HDMI receiver
21 to 26
NC
-
Not used
27
CSCL
O
I2C clock signal output to the HDMI receiver and HDMI transmitter
28
CSDA
I/O
Two-way I2C data bus with the HDMI receiver and HDMI transmitter
29
VU_TX
O
Serial data output to the DSP
30
VU_RX
I
Serial data input from the DSP
31
CLK1
-
Not used
32
RTS1
-
Not used
33
HUART_TX
O
Serial data output to the system controller
34
HUART_RX
I
Serial data input from the system controller
35 to 40
NC
-
Not used
41
TX_5VPWR
O
Power supply on/off control signal output terminal for HDMI +5V power “H”: power on
42
TX_RST
I
Reset signal input from the HDMI transmitter “L”: reset
43
TX_INT
O
Interrupt signal output to the HDMI transmitter
44 to 59
NC
-
Not used
60
VCC_3.3V
-
Power supply terminal (+3.3V)
61
NC
-
Not used
62
VSS
-
Ground terminal
63
NC
-
Not used
64
Non_LPCM
O
Non-PCM audio data output to the multiplexer
65
MUTE
O
Audio muting request signal output to the multiplexer
66 to 90
NC
-
Not used
91 to 93
MODEL_SW3 to
MODEL_SW1
I
Model setting terminal
94
AVSS
-
Ground terminal
95
NC
-
Not used
96
VREF
I
Reference voltage (+3.3V) input terminal
97
AVCC
-
Power supply terminal (+3.3V)
98 to 100
NC
-
Not used
Click on the first or last page to see other HT-CT550W / STR-CT550WT service manuals if exist.