DOWNLOAD Sony HCD-V4800 / LBT-V4800 / LBT-V4800R Service Manual ↓ Size: 1.32 MB | Pages: 67 in PDF or view online for FREE

Model
HCD-V4800 LBT-V4800 LBT-V4800R
Pages
67
Size
1.32 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-v4800-lbt-v4800-lbt-v4800r.pdf
Date

Sony HCD-V4800 / LBT-V4800 / LBT-V4800R Service Manual ▷ View online

– 29 –
Pin No.
Pin Name
I/O
Function
47
STBY
I
Hardware standby signal input terminal (fixed at “H”)
48
RESET
I
Reset signal input from the IIC interface controller (IC901)    “L”: reset
49
NMI
I
Non-maskable interrupt input terminal (fixed at “H”)
50
VSS
Ground terminal
51
EXTAL
O
System clock output terminal (10 MHz)
52
XTAL
I
System clock input terminal (10 MHz)
53
VCC
Power supply terminal (+5V)
54
AS
O
Address strobe signal output to the MPEG audio/video decoder (IC201)                                        
Used for chip select signal output to the MPEG audio/video decoder (IC201)
55
RD
O
Data reading strobe signal output to the S-RAM (IC751)
56
WR
O
Data writing strobe signal output to the MPEG audio/video decoder (IC201) and S-RAM
(IC751)
57
RESO
O
Reset signal output terminal    Not used (open)
58
AVSS
Ground terminal (for A/D conversion)
59
TEST0
I
Setting terminal for the test (color bar mode)    Normally: “H”
60
TEST1
I
Setting terminal for the test (E-F balance mode)    Normally: “H”
61
TE
I
Setting terminal for the test (E-F balance mode)    Normally: “H”
62
SENS
I
Internal status (SENSE) signal input from the CXD2545Q (IC101)
63
DAC-SEL
I
Setting terminal of the D/A converter (fixed at “H”)
64
NPIN
I
Video system selection input from the system select switch (S9001)                                              
“L”: PAL, “H”: NTSC, Middle: AUTO
65
VSS
Ground terminal
66
VREQ
I
Request signal input terminal    Not used (fixed at “H”)
67
VREF
I
Reference voltage (+5V) input terminal
68
AVCC
Power supply terminal (for A/D conversion)
69
CHECK-LED
O
LED drive signal output for the self diagnosis indicator                                                                  
Normally: LED on (“H” output), Error: LED blinking
70
XHIRQ
I
Interruption request signal input from the MPEG audio/video decoder (IC201)
71
SCOR
I
Sub-code sync (S0+S1) detection signal input from the CXD2545Q (IC101)
72
MREQ
I
Communication request signal input from the IIC interface controller (IC901) 
73
DATA
O
Serial data output to the CXD2545Q (IC101), D/A converter/digital filter (IC101), and video
D/A converter (IC401)
74
AMUTE
O
Mute control signal output to the CXD2545Q (IC101) and D/A converter/digital filter (IC101)
75
LDON
O
Laser on/off selection signal output to the CXA1821M (IC103)    “H”: laser on
76
XLT
O
Serial data latch pulse output to the CXD2545Q (IC101)
77
SCLK
O
Serial data transfer clock signal output to the CXD2545Q (IC101)
78
CLK
O
Serial data transfer clock signal output to the CXD2545Q (IC101), D/A converter/digital filter
(IC101), and video D/A converter (IC401)
79
NR-SEL
I
Setting terminal of the video noise reduction (fixed at “H”)
80
Not used (open)
– 30 –
   VIDEO BOARD  IC901  
µ
PD780016YGF-012-3BA (IIC INTERFACE CONTROLLER)
Pin No.
Pin Name
I/O
Function
1 to 8
P80 to P87
I
Not used (fixed at “L”)
9
TEST
I
Test terminal (fixed at “L”)
10
X2
O
Main system clock output terminal (5 MHz)
11
X1
I
Main system clock input terminal (5 MHz)
12
VDD
Power supply terminal (+5V)
13
XT2
O
Sub system clock output terminal    Not used (open)
14
XT1
I
Sub system clock input terminal    Not used (fixed at “H”)
15
RESET
I
Reset signal input from the master controller (IC301)    “L”: reset
16
P00
I
Inputs the boundary point control (phase fix) for CXD1854Q (IC301) (fixed at “L”)
17
P01
I
Inputs the boundary point control (phase switch) for CXD1854Q (IC301) (fixed at “L”)
18
QINT
I
Interrupt status input from the CD mechanism controller (IC701)
19 to 22
P03 to P06
I
Inputs the boundary point control (phase 0 to 3) for CXD1854Q (IC301) (fixed at “L”)
23
VDD
Power supply terminal (+5V)
24
AVDD
Power supply terminal (+5V) (for A/D conversion)
25 to 32
P10 to P17
I
Not used (fixed at “L”)
33
AVSS
Ground terminal (for A/D conversion)
34
CMD0
I/O
35
CMD1
I/O
36
CMD2
I/O
37
CMD3
I/O
38
P24
I
Not used (fixed at “L”)
39
P25
I
Not used (fixed at “L”)
40
VSS
Ground terminal
41
P26
I
Not used (fixed at “L”)
42
P27
I
Not used (fixed at “L”)
43
MREQ
O
Communication request signal output to the CD mechanism controller (IC701)
44
SACK
I
Data acknowledge input from the CD mechanism controller (IC701)
45
CDGM
I
Not used (fixed at “L”)
46
P93
I
Not used (fixed at “L”)
47
MDATA
O
Serial data output to the on screen display controller (IC271) and video noise reduction (IC301)
48
MCLK
O
Serial data transfer clock signal output to the on screen display controller (IC271) and video
noise reduction (IC301)
49
OS-XLAT
O
Serial data latch pulse output to the on screen display controller (IC271)
50
G-XLAT
O
Serial data latch pulse output terminal    Not used (open)
51
G-XRST
O
Reset signal output terminal    Not used (open)
52
CD-XRST
O
Reset signal output to the CD/video CD circuit    “L”: reset
53
CDPOW
O
Power on/off selection signal output terminal    Not used (open)
54
DOUT
O
Digital output terminal    Not used (open)
55
IIC-DATA
I/O
Communication data bus with the master controller (IC301) and fluorescent indicator tube
driver (IC601)
56
IIC-CLK
I/O
Communication data reading clock signal input or transfer clock signal output with the master
controller (IC301) and fluorescent indicator tube driver (IC601)
57 to 64
P40 to P47
I
Not used (fixed at “L”)
65
NRON
O
Video noise reduction system on/off selection signal output terminal    Not used (open)
66
LEVEL0
O
Level control signal output terminal    Not used (open)
67
LEVEL1
O
Level control signal output terminal    Not used (open)
Two-way data bus with the mechanism controller (IC701)
– 31 –
Pin No.
Pin Name
I/O
Function
68
NR-XCS
O
Chip select signal output to the video noise reduction (IC301)
69
P54
I
Not used (fixed at “L”)
70
P55
I
Not used (fixed at “L”)
71
VSS
Ground terminal
72
P56
I
Not used (fixed at “L”)
73
P57
I
Not used (fixed at “L”)
74 to 81
P60 to P67
I
Not used (fixed at “L”)
82 to 85
P100 to P103
I
Not used (fixed at “L”)
86 to 93
P30 to P37
I
Not used (fixed at “L”)
94 to 100
P150 to P156
I
Not used (fixed at “L”)
– 32 –
• Circuit Boards Location
VIDEO POWER board
KEY-CON board
MAIN board
ENCAPSULATED COMPONENT
(FM/AM TUNER UNIT)
POWER AMP
board
TC-B SW board
CD-B1 SW board
CD-B2 SW board
DOOR SW board
CD-A SW board
LED board
TC-A SW
board
HP/MIC board
PANEL board
TRANS board
CD MOTOR board
MOTOR board
LEAF SWITCH
board
VIDEO board
BD board
VIDEO OUT
board
AUDIO board
BD LED board
TABLE SENSOR board
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