Sony SLV-LX80S Service Manual ▷ View online
5-2
5-3. SYSTEM CONTROL — SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE
(MA-397 BOARD IC160)
5-4. SYSTEM CONTROL AND RF MODULATOR — INPUT SELECTION BLOCK INTERFACE
(MA-397 BOARD IC160)
Signal
ANT SEL
Pin No.
MA-397 Board
IC160wa
I/O
O
I/O level
“H” when RF modulator through.
5-5. SYSTEM CONTROL — VIDEO/RP BLOCK INTERFACE (MA-397 BOARD IC160)
Signal
RF SWP
QVD
C SYNC
Pin No.
MA-397 Board
IC160qk
MA-397 Board
IC160qd
MA-397 Board
IC160tk
TAPE
LOADING
*1
L
*3
TAPE
UNLOADING
*1
L
*3
STOP/FF
/REW
*1
L
*3
PB
*1
*2
*3
REC
*1
L
*3
I/O
O
O
I
REC/
PAUSE
*1
L
*3
*1. Synchronized with drum rocation, 30Hz 50% duty pulse.
*2. Normal “L”, “H” when video signal is not rgenerated.
*3. Composite sync signal (positive).
*2. Normal “L”, “H” when video signal is not rgenerated.
*3. Composite sync signal (positive).
5-6. SYSTEM CONTROL — AUDIO BLOCK INTERFACE (MA-397 BOARD IC160)
Signal
A MUTE
AF REC P
Pin No.
MA-397 Board
IC160yd
MA-397 Board
IC160ws
TAPE
LOADING
L
L
TAPE
UNLOADING
L
L
STOP/FF
/REW
L
L
PB
L
L
REC
L
H
I/O
O
O
REC/
PAUSE
L
L
Signal
RESET
I2C DATA 1
I2C CLOCK 1
I2C DATA VIDEO
I2C CLOCK VIDEO
(ARC) S OUT 1
(ARC) CLK 1
Pin No.
MA-397 Board
IC160ef
MA-397 Board
IC160es
MA-397 Board
IC160ea
MA-397 Board
IC160us
MA-397 Board
IC160ua
MA-397 Board
IC160rs
MA-397 Board
IC160ra
I/O
I
I/O
O
I/O
O
I/O
O
I/O level
Normally “H”, “L” when service interruption detected or restored.
Serial communication data to EEPROM I2C161.
Serial communication clock to EEPROM I2C161.
Serial communication data to video and audio microprocessor.
Serial communication clock to video and audio microprocessor.
Serial communication data to ARC microprocessor.
Serial communication clock to ARC microprocessor.
5-3
5-7. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTIONS
(MA-397 BOARD IC160)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Pin Name
DEST
FULL ERS
TU AFT
FUNC KEY2
FUNC KEY1
S SENS
T SENS
V RF ENV
AF ANV
CBC ON
KKP+
KKP–
QVD
REMOCON
C ROT
HA SWP
ENV SW
RF SWP
AF SWP
END LED
ANT SEL
AF REC P
FE ON
CAP RVS
SUR ON
MODE4
MODE3
MODE2
MODE1
REC PRF
I2C CLK EEP
I2C DATA EEP
CAM
RESET
32kHz (in)
32kHz (out)
Vcc
4fsc (in)
4fsc (out)
Vss
ARC CLK
ARC DATA
CLK SEL
OSC IN
OSC OUT
NUB
LPF
SP
OSD GND
OSD V IN
I/O
I
I
I
I
I
I
I
I
I
O
I
I
O
I
O
O
I
O
O
O
O
O
—
O
—
I
I
I
I
I
I/O
I/O
O
I
I
O
I
I
O
—
O
O
I
I
O
—
I/O
O
—
I
Function
Destination control input
STEREO/MONO/SAP DETECTION
Tuner analog AFT input
Key input
Key input
Tape end sensor input
Tape top sensor input
Video playback signal envelope input
Hi-Fi audio playback signal envelope input
Cable box control signal output
ETR pulese signal input
ETR pulese signal input
Quasi VD pulese output
Remote sires signal input
Head AZ signal output
SP/EP changed head signal
SP/EP head output lebel ditaction signal
VIDEO RF switching pulse output.
AF switching pulse output.
END sensor LED output
TV/VTR RF modulator control output
Hi-Fi record control pulse output.
NC
Capstan reverse control
NC
Mechanism section CAM encoder input (data4)
Mechanism section CAM encoder input (data3)
Mechanism section CAM encoder input (data2)
Mechanism section CAM encoder input (data1)
Erasing protection tab, cassette IN detection input
HC CLOCK line (EEPROM)
HC DATA line (EEPROM)
Cam motor control signal output
System reset input
Sub clock 32MHz
Sub clock 32MHz
5V
Main clock input
Main clock output
Ground
Realityregenarator (ARC) control clock signal
Realityregenarator (ARC) control data signal
CLOCK seleal “L” Sub clock, “H” main and sub clock.
OSD clock input
OSD clock output
Ground
fsc filter
“L” output when SP mode.
Ground
OSD Video signal input.
Pin No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Pin Name
WHITE LEVEL
OSD V OUT
OSD Vcc
HLF
V HOLD
C VIDEO IN
NUA
C SYNC
PLL CLK
PLL DATA
PLL ENABLE
TA MUTE
A MUTE
P CONT M12
P CONT SW12
FLD CS
V-SET CS
S OUT0
S IN 0
S CLK 0
I2C CLK
I2C DATA
CBC SIRCS OUT
CLK OUT
NICOLE
CAP ERR
DRUM ERR
P FAIL
S REEL
T REEL
DMS+
DMS–
MAIN/SAP
F MONO
STEREO
SAP
CAP FG
AMP Vss
DRUM FG
DRUM PG
AMP Vref OUT
AMP Vref IN
RC CHECK
CTL–IN
CTL+IN
AMP C
CTL AMP OUT
AMP Vcc
A Vcc
V-SET RESET
I/O
I
O
—
I/O
I/O
I
—
I
O
O
O
O
O
O
O
O
O
O
I
O
I/O
I/O
O
—
O
O
O
I
I
I
I
I
O
O
I
I
I
—
I
I
O
I
I
I/O
I/O
I
O
—
—
O
Function
White level signal input
OSD Video signal output
SW 5V (OSD block)
External low-pass filter for slicer/AFC is connected to this terminal
External capacitor for slicer is connected to this terminal
Control video signal input (osd, tuner, sorvo)
D Ground
NC
Tuner PLL clock output
Tuner PLL data output
Tuner enable output
NC
AUDIO mute output
Motor 12V control output
SW 12V control output
FLD drive chip select signal output
V-set micon chip select signal output
Serial communication signal (FLD, V-SET)
Serial communication signal (FLD, V-SET)
Serial communication signal (FLD, V-SET)
IIC clock signal (VIDEO, HiFi)
IIC data signal (VIDEO, HiFi)
Cable mouse sircs signal output
NC
Timing signal output
Capstan error D/A output
Drum error D/A output
Power fail detection input
Supply reel sensor input
Take up reel sensor input
NC
NC
NC
NC
Ground
Ground
Capstan FG signal input
Ground
Drum FG input.
Drum PG input.
Analog AMP reference Vcc output
Analog AMP reference Vcc input
Check input
Control signal IN/OUT
Control signal IN/OUT
Control signal AC conect
Control signal AMP output
D-5V
D-5V
NC
5-4E
SLV-LX80S
6-1
6-1
MECHANICAL ADJUSTMENTS
For the mechanical adjustments, please refer to the
“VHS MECHANICAL ADJUSTMENT MANUAL
(S MECHANISM)” (9-921-647-11).
“VHS MECHANICAL ADJUSTMENT MANUAL
(S MECHANISM)” (9-921-647-11).
6-2. ELECTRICAL ADJUSTMENTS
See the adjusting part location diagram from on page 6-6
for the adjustment.
for the adjustment.
2-1.
PREPARATION BEFORE ADJUSTMENT
2-1-1.
Equipment Required
The measuring instruments used for this alignment include:
1)
1)
Monitor TV
2)
Oscilloscope, dual-trace, bandwidth of 30 MHz or more, with
delay mode (A probe 10:1 should be used unless otherwise
specified.)
delay mode (A probe 10:1 should be used unless otherwise
specified.)
3)
Frequency counter
4)
NTSC Pattern generator
5)
Remote commander
6)
Digital voltmeter
7)
Audio generator
8)
Audio level meter
9)
Audio attenuator
10) Alignment tapes
KRV-51N2 (NTSC) Part No. : 8-192-605-32
2-1-2.
Equipment Connection
Unless otherwise specified, connect and adjust the measuring
instruments as shown in the following diagram.
instruments as shown in the following diagram.
Fig. 6-2-1
2-1-3.
Set-up of Adjustment
In this adjustment, NTSC pattern generator is connected with LINE
input terminal. When check to tuner, connected AERIAL terminal.
Check that the synchronizing signal of the Y signal has an amplitude
of approximately 0.7 V and that the burst signal has an amplitude of
approximately 0.3 V and its waveform is flat. And check that the
level ratio of burst signal to “red” signal is 0.30 : 0.66. The video
signal (color bar) used for electrical aligning this unit is shown in
Fig. 6-2-2.
input terminal. When check to tuner, connected AERIAL terminal.
Check that the synchronizing signal of the Y signal has an amplitude
of approximately 0.7 V and that the burst signal has an amplitude of
approximately 0.3 V and its waveform is flat. And check that the
level ratio of burst signal to “red” signal is 0.30 : 0.66. The video
signal (color bar) used for electrical aligning this unit is shown in
Fig. 6-2-2.
NTSC model
Fig. 6-2-2 Color Bar Signals of Pattern Generator
2-1-4.
Alignment Tape
• Contents of KRV-51N2
VIDEO LINE IN
VIDEO LINE OUT
Video output
(75
Ω
)
Pattern generator
VCR
Monitor TV
1
2
3
4
Mode
SP
LP
Period
7 minutes
3 minutes
7 minutes
3 minutes
Video signal
Color bar
Monoscope
Color bar
Monoscope
Audio signal
Hi-Fi
400Hz
(L/R)
Normal
400Hz
White (100%)
About 0.7 V
About
0.3 V
0.3 V
Horizontal sync signal
Red
Burst signal
(It must be flat.)
(It must be flat.)
About
0.3 V
0.3 V
SECTION 6
ADJUSTMENTS
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