Sony SLV-KS1 Service Manual ▷ View online
5-3
Signal
Pin No.
I/O
I/O Le
vel
RESET
MA-370
I
Normally
“H
”,
“L
” when service interruption is detected or restored.
IC160
ef
I2C DATA EEP
MA-370
I/O
Serial communication data to EEPROM IC161.
IC160
es
I2C CLOCK EEP
MA-370
O
Serial communication clock to EEPROM IC161.
IC160
ea
I2C DATA
MA-370
I/O
Serial communication data to video and audio microprocessor.
IC160
us
I2C CLOCK
MA-370
O
Serial communication clock to video and audio microprocessor.
IC160
ua
5-4.
SYSTEM CONTR
OL
–
SYSTEM CONTR
OL PERIPHERAL CIRCUIT INTERF
A
CE (MA-370 BO
ARD IC160)
5-5.
SYSTEM CONTR
OL
–
A
UDIO BLOCK INTERF
A
CE (MA-370 BO
ARD IC160)
STOP/
TAPE
TAPE
REC
•
Signal
Pin No.
I/O
FF/
THREAD-
UNTHREAD-
PB
REC
PAUSE
REW
ING
ING
A MUTE
MA-370
OL
L
L
L
L
H
IC160
yd
5-4
5-4 E
5-6.
SER
V
O
/SYSTEM CONTR
OL MICR
OPR
O
CESSOR PIN FUNCTION (MA-370 BO
ARD 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
N.C
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
N.C
CAP
R
V
S
N.C
MODE4
MODE3
MODE2
MODE1
REC PRF
I2C CLK EEP
I2C DA
T
A
EEP
CAM
RESET
32kHz (in)
32kHz (out)
Vcc
4fsc (in)
4fsc (out)
Vss
ARC CLK
ARC DA
T
A
CLK SEL
OSC IN
OSC OUT
NUB
LPF
SP
OSD GND
OSD V IN
I/O
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
NC
T
uner analog
AFT
input (Not used)
Key input
Key input
T
ape end sensor input
T
ape top sensor input
V
ideo playback signal envelope input
Hi-Fi audio playback signal envelope input (Not used)
Cable box control signal output (Not used)
ETR pulse signal input (Not used)
ETR pulse signal input (Not used)
Quasi VD pulse output
Remote sircs signal input
Head
AZ signal output
SP/EP changed head signal
SP/EP head output level detection signal
VIDEO RF switching pulse output.
AF switching pulse output. (Not used)
END sensor LED output
TV/VTR RF modulator control output (Not used)
Hi-Fi record control pulse output. (Not used)
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
IIC CLOCK line (EEPROM)
IIC DA
T
A
line (EEPROM)
Cam motor control signal output
System reset input
Sub clock 32kHz (Not used)
Sub clock 32kHz (Not used)
5V
Main clock input
Main clock output
Ground
Rearityregenarator (ARC) control clock signal (Not used)
Rearityregenarator (ARC) control data signal (Not used)
CLOCK select
“L
” Sub clock,
“H
” main and sub clock. (Fixed to
“H
”)
OSD clock input
OSD clock output
Ground
fsc filter
“L
” output when SP mode. (Not used)
Ground
OSD V
ideo 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
N.C
PLL CLK
PLL
DA
T
A
PLL ENABLE
T
A
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 DA
T
A
CBC SIRCS OUT
CLK OUT
NICOLE
CAP ERR
DRUM ERR
P
F
AIL
S REEL
T REEL
DMS+
DMS
–
MAIN/SAP
F MONO
STEREO
SAP
CAP FG
AMP Vss
DRUM FG
DRUM PG
AMP
V
ref OUT
AMP
V
ref 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 (Fixed to ground)
OSD V
ideo 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, servo)
D Ground
NC
Kids sound PLL clock output
Kids sound PLL data output
Kids sound enable output
T
uner audio mute output (Not used)
AUDIO mute output
Motor 12V control output
SW 12V control output
FLD drive chip select signal output (Not used)
V
-set micon chip select signal output (Not used)
Serial communication signal (Not used)
Serial communication signal (Not used)
Serial communication signal (Not used)
IIC clock signal (VIDEO)
IIC data signal (VIDEO)
Cable mouse sircs signal output (Not used)
NC
T
iming signal output (Not used)
Capstan error D/A output
Drum error D/A output
Power fail detection input
Supply reel sensor input
T
ake up reel sensor input
DMS control input (Not used)
DMS control input (Not used)
POWER LED control signal output
T
uner audio normal select (Not used)
T
uner Stereo detection
“L
” when Stereo mode. (Fixed to
“H
”)
T
uner SAP
detection
“L
” when SAP
mode. (Fixed to
“H
”)
Capstan FG signal input
Ground
Drum FG input.
Drum PG input.
Analog
AMP
reference voltage output
Analog
AMP
reference voltage input
Check input (Fixed to
“H
”)
Control head signal IN/OUT
Control head signal IN/OUT
External capacitor for
AMP
connected to this terminal
Control
AMP
signal output (For check)
D5V
D5V
NC
6-1
SECTION 6
ADJUSTMENTS
1
2
3
4
Mode
SP
SP
EP
EP
Video signal
Color bar
Monoscope
Color bar
Monoscope
Audio signal
(HiFi/Normal)
400 Hz
Time
Seven minutes
Three minutes
Seven minutes
Three minutes
6-1. MECHANICAL ADJUSTMENTS
Refer to the SERVICE MANUAL of VHS MECHANICAL AD-
JUSTMENT VI.
JUSTMENT VI.
6-2. ELECTRICAL ADJUSTMENTS
2-1.
PRE-ADJUSTMENT PREPARATIONS
Necessary items and indications for total adjustment of electric
circuit of this machine will be described in this chapter.
circuit of this machine will be described in this chapter.
2-1-1.
Instruments to be Used
1) Color TV
2) Oscilloscope 1 or 2 phenomena, band more than 30 MHz, de-
2) Oscilloscope 1 or 2 phenomena, band more than 30 MHz, de-
lay mode, as provided.
3) NTSC pattern generator
4) Digital voltmeter
5) Remote commander
4) Digital voltmeter
5) Remote commander
RMT-V266A (1-418-694-11) or
RMT-V266B (1-418-695-11)
RMT-V266B (1-418-695-11)
6) Audio level meter
7) Audio generator
8) Attenuator
9) Alignment tape
7) Audio generator
8) Attenuator
9) Alignment tape
Part Code: 8-192-605-32 KRV-51N2
2-1-2.
Connection
Unless otherwise specified, connect and adjust the measuring in-
struments as shown in the following diagram.
struments as shown in the following diagram.
During the adjustment, see the Parts Arrangement
Diagram for Adjustments on Page 6-4.
Diagram for Adjustments on Page 6-4.
Fig. 6-2-2
2-1-4.
Alignment Tapes
[Alignment Tape (KRV-51N2)]
2-1-3.
Set-up of Adjustment
In this adjustment, NTSC pattern generator is connected with LINE
input signal terminal. When check to tuner, connected AERIAL
terminal. Check that the amplitudes of video signal SYNC signal,
of picture portions, and of burst signals are flat at approximately
0.3, 0.7 and 0.3 V, respectively, and that the level ratio of the burst
signal and “red” signal are 0.30: 0.66. Fig. 6-2-2. shows video signals
(color bars) used in adjusting the video section.
input signal terminal. When check to tuner, connected AERIAL
terminal. Check that the amplitudes of video signal SYNC signal,
of picture portions, and of burst signals are flat at approximately
0.3, 0.7 and 0.3 V, respectively, and that the level ratio of the burst
signal and “red” signal are 0.30: 0.66. Fig. 6-2-2. shows video signals
(color bars) used in adjusting the video section.
Video output
(75
Ω
)
Pattern generator
VCR
VIDEO LINE IN
Monitor TV
VIDEO LINE OUT
SLV-KS1
2-1-5.
Specified I/O Level and Impedance
Input/output terminal
Video inputs
LINE IN
: phono jack
Input signal : 1 Vp-p, 75
Ω
, unbalanced, sync
negative
Audio inputs
LINE IN
: phono jack
Input level
: 327 mVrms
Input impedance: more than 47 k
Ω
Video outputs
LINE OUT
: phono jack
Output signal : 1 Vp-p, 75
Ω
, unbalanced, sync
negative
Audio outputs
LINE OUT
: phono jacks
Standard output : 327 mVrms
Load impedance : 47 k
Load impedance : 47 k
Ω
Output impedance : less than 10 k
Ω
Fig. 6-2-1
6-2
2-1-6.
Adjusting Sequence
Make the electrical adjustment in the following sequence.
Checking power supply
Servo system adjustment
Audio system adjustment
2-3.
SERVO SYSTEM ADJUSTMENT
2-3-1.
RF Switching Position Adjustment
(MA-370 Board)
(MA-370 Board)
Purpose:
Adjust the interval between A ch and B ch of tape playback out-
put.
Improve the interchangeability with other tapes and sets.
When it is out of order, the interval appears on the screen, the
screen is disturbed.
Adjust the interval between A ch and B ch of tape playback out-
put.
Improve the interchangeability with other tapes and sets.
When it is out of order, the interval appears on the screen, the
screen is disturbed.
Mode
PB
Signal
Alignment tape SP mode
color bar
color bar
Measurement Point
CH1: VIDEO LINE OUT
CH2: Pin 3 of CN270
(RF SWP)
CH2: Pin 3 of CN270
(RF SWP)
Measuring Instrument
Oscilloscope
Adjusting Element
Remote commander (Note)
Specified Value
6.5 ± 0.5 H (410 ± 32 µsec)
Note: RMT-V266A (1-418-694-11) or
RMT-V266B (1-418-695-11)
Adjusting Method:
1) Connect MA-370 board JS401 to the GND for about 1 second
1) Connect MA-370 board JS401 to the GND for about 1 second
to activate the RF switching position adjustment mode.
2) Check that the Power LED flash on and off.
3) Using the channel + and – buttons on the remote commander,
3) Using the channel + and – buttons on the remote commander,
adjust to 6.5 ± 0.5 H.
4) Press the pause button.
Fig. 6-2-3.
Mode
STANDBY
Measuring Instrument
Digital voltmeter
D +6 V check
Measurement Point
Corrector of Q607
Specified Value
5.56 to 6.25 V
2-2.
POWER SUPPLY ADJUSTMENT
2-2-1.
Power Supply Check
(MA-370 Board)
(MA-370 Board)
Approx. 1 Vp-p
Approx. 5 Vp-p
V
enargement
CH2
CH1
CH2
CH1
Vertical sync. signal
6.5
±
0.5 H
(410
±
32
µ
sec)
Mode
E-E
Measuring Instrument
Digital voltmeter
SW +12 V check
Measurement Point
Pin 2 of IC601
Specified Value
11.7 to 12.3 V
SW +5 V check
Measurement Point
Emitter of Q607
Specified Value
4.8 to 5.4 V
MTR 12 V check
Measurement Point
Corrector of Q605
Specified Value
12.5 to 14.5 V
Checking Method:
1) Confirm that each voltage meets its specified value.
1) Confirm that each voltage meets its specified value.
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