Sony SLV-CA30TW / SLV-GA35ME / SLV-GA35PL / SLV-GA35PS / SLV-GA35SG / SLV-GA35TH / SLV-GA35TW / SLV-GA55ME / SLV-GA55PL / SLV-GA55PS / SLV-GA55SG / SLV-GA55TH / SLV-GA65MJ / SLV-GF85PL / SLV-GF85PS / SLV-GF85TH / SLV-GF85TW / SLV-SA33TW / SLV-SP100R / SLV-SP70 Service Manual ▷ View online
5-2
CASSETTE CASSETTE
TAPE
TAPE
PB •
REC •
Signal
Pin No.
I/O
EJECTED
LOADING UNLOADING
THREAD- UNTHREAD- STOP
FF
REW
PB
PAUSE
SLOW
×
2
CUE
REVIEW
REC
PAUSE
ING
ING
CAM
MA-366
Hi-Z
L
H
L
H
L
*
7
*
7
*
7
*
7
*
7
*
7
*
7
*
7
*
7
*
7
*
7
IC101
og
MODE 1 (
*
8)
MA-366
I
H
L
L
*
1
*
1
H
H
H
H
H
H
H
H
L
H
H
IC101
ys
MODE 2 (
*
8)
MA-366
I
H
L
L
*
1
*
1
H
H
H
L
L
L
L
L
L
L
L
IC101
yd
MODE 3 (
*
8)
MA-366
I
L
L
L
*
1
*
1
H
L
L
L
L
L
L
L
H
L
L
IC101
yf
MODE 4 (
*
8)
MA-366
I
L
H
H
*
1
*
1
L
H
H
H
L
L
L
L
L
L
L
IC101
yg
REC PRF
MA-366
I
H
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
IC101
1
T REEL FG
MA-366
I
H/L
H/L
H/L
H/L
H/L
H/L
*
3
*
3
*
3
H/L
*
3
*
3
*
3
*
3
*
3
H/L
IC101
ik
S REEL FG
MA-366
I
H/L
H/L
H/L
*
3
*
3
H/L
*
3
*
3
*
3
H/L
*
3
*
3
*
3
*
3
*
3
H/L
IC101
il
END LED
MA-366
O
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
IC101
uf
(O.D)
CAP RVS
MA-366
O
H
L
H
H/L
L
H
L
L
L/
*
5
L
L
H
L
L
IC101
yj
T SENS
MA-366
I
*
4
*
4
*
4
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
IC101
qd
S SENS
MA-366
I
*
4
*
4
*
4
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
IC101
7
5-3. SYSTEM CONTROL – MECHANISM BLOCK INTERFACE (MA-366 BOARD IC101)
∗
1.
Uncertainty.
∗
2.
“L” when erasing protection tab is bent, “H” when not bent.
∗
3.
Pulse of period in propor tion to reel rotating speed.
∗
4.
Approx. 2 msec period “H” pulse.
∗
5.
Pulse at tape running.
∗
6.
Nor mally “L”. 2 msec period “H” pulse when tape top or tape end is detected.
∗
7.
When transition to UNLOADING direction: L.
When transition to LOADING direction: H.
When CAM motor is stopped: Hi-Z.
When transition to LOADING direction: H.
When CAM motor is stopped: Hi-Z.
∗
8.
When RVS slow: Mode 1=“L”
When RVS slow: Mode 2=“L”
When RVS slow: Mode 3=“H”
When RVS slow: Mode 4=“L”
When RVS slow: Mode 2=“L”
When RVS slow: Mode 3=“H”
When RVS slow: Mode 4=“L”
5-3
5-4. SYSTEM CONTROL – AUDIO BLOCK INTERFACE (MA-366 BOARD IC101)
STOP/
TAPE
TAPE
PB •
REC •
Signal
Pin No.
I/O
FF/
LOADING UNLOADING
PB
PAUSE
SLOW
×
2
CUE
REVIEW
REC
PAUSE
REW
AF ENV
MA-366
I
AF RF envelope signal input terminal for automatic tracking.
IC101
qs
A MUTE
MA-366
O
Hi-Z
Hi-Z
Hi-Z
Hi-Z
H
H
H
H
H
L
L
IIC101
ql
(O.D)
AF REC P
MA-366
O
L
L
L
L
L
L
L
L
L
H
L
IC101
qj
AF SWP
MA-366
O
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
IC101
wd
∗
1.
30 Hz 50% duty pulse approx. 5 msec delayed from RF SW P.
5-45-4 E
5-5. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTION (MA-366 BOARD IC101)
Pin No.
Pin Name
I/O
Function
1
REC PRF
I
Erasing protection tab. cassette in detection
2
D GND
–
Digital circuit ground
3
KEY 1
I
Function key analog voltage input 1
4
KEY 2
I
Function key analog voltage input 2
5
KEY 3
I
Function key analog voltage input 3
6
KEY 4
I
Function key analog voltage input 4
7
S SENS
I
Supply end sensor signal input
8
V SWP ADJ
I
Video switching position adjustment
9
A SWP ADJ
I
Audio switching position adjustment
10
MESECAM DET
I
MESECAM detect signal input “H” : MESECAM
11
V ENV
I
Video playback signal envelope
12
A ENV
I
HiFi audio playback signal envelope
13
T SENS
I
Take-up end sensor signal input
14
NC
–
Not used
15
AN +5V
–
Analog circuit ground
16
RESET
I
Reset signal input
17
REC P
O
“L” : output when REC pause mode
18
PAL
O
“H” : PAL/MESECAM (video block control signal output)
19
AU MUTE
O
“H” : audio mute signal output
20
NTSC
O
“H” : NTSC (video block control signal output)
21
KILL IN
I
Color killer detect signal input
22
VCC (+5V)
–
Power supply
23
AF SWP
O
AF switching pulse output
24
RF SWP
O
RF switching pulse output
25
CAP VS
O
Capstan error signal output
26
DRUM VS
O
Drum motor error signal output
27
QVD
O
Quasi VD pulse output
28
NC
–
Not used
29
NC
–
Not used
30
NC
–
Not used
31
CTL+
I/O
CTL head signal input/output
32
CTL–
I/O
CTL head signal input/output
33
VSS GND SERVO
–
Servo circuit ground
34
CTL AMP 1
I
CTL Amp. control (Gain set)
35
CTL AMP 2
I
CTL Amp. control (Gain set)
36
CTL AMP 3
I
CTL Amp. control (Gain set)
37
CTL AMP OUT
O
CTL Amp. output (For check)
38
DRUM FG
I
Drum FG Schmidt amp. input
39
DRUM PG
I
Drum PG Schmidt amp. input
40
CAP FG
I
Capstan FG Schmidt input
41
+5V SERVO
–
Servo circuit power supply
42
+5V OSD
–
OSD circuit power supply
43
VIDEO IN
I
Video signal input
44
VREF
I
Reference bias and clamp bias power pin
45
VIDEO OUT
O
Video signal output
46
CHAR.BIAS
–
Not used
47
AFC LPF
I
AFC LPF pin input
48
AFC OSC
I
AFC oscillator pin input
49
VSS OSD
–
OSD circuit ground
50
DOSC IN
I
OSD dot clock oscillator (input)
Pin No.
Pin Name
I/O
Function
51
DOSC OUT
O
OSD dot clock oscillator (output)
52
2FSC OUT
O
OSD 2fsc oscillator terminal (output)
53
2FSC IN
I
OSD 2fsc oscillator terminal (input)
54
C SYNC
I
Composite Sync signal input
55
MESECAM OUT
O
“H” : MESECAM (video block control signal output)
56
SHARP 1
O
“H” : Active (SHARPNESS control)
57
SHARP 2
O
“H” : Active (SHARPNESS control)
58
CHROMA 1
O
“H” : Active (CHROMA control)
59
CHROMA 2
O
“H” : Active (CHROMA control)
60
CHROMA 3
O
“H” : Active (CHROMA control)
61
CHROMA 4
O
“H” : Active (CHROMA control)
62
MODE 1
I
Mechanism section CAM encoder input (data 1)
63
MODE 2
I
Mechanism section CAM encoder input (data 2)
64
MODE 3
I
Mechanism section CAM encoder input (data 3)
65
MODE 4
I
Mechanism section CAM encoder input (data 4)
66
CAP PWM
O
Capstan PWM output
67
CAP RVS
O
Capstan reverse control signal “L” : when reverse
68
TEST
I
Fixed to ground
69
32kHz OUT
–
Not used
70
32kHz IN
–
Not used (Fixed to +5V)
71
VSS (SYS)
–
Ground
72
10MHz IN
I
System clock terminal (10MHz)
73
10MHz OUT
O
System clock terminal (10MHz)
74
END LED
O
Top/End LED ON/OFF control
75
DANCE 4 LED
O
““L” : On, “H” : Off (LED)”
76
CASSETTE IN LED
O
““L” : On, “H” : Off (Cassette in LED)”
77
DANCE 3 LED
O
““L” : On, “H” : Off (LED)”
78
DANCE 2 LED
O
““L” : On, “H” : Off (LED)”
79
DANCE 1 LED
O
““L” : On, “H” : Off (LED)”
80
POWER R LED
O
““H” : Standby, “L” : Power on (ON/STANDBY LED)”
81
POWER G LED
O
““L” : Standby, “H” : Power on (ON/STANDBY LED)”
82
REMOCON
I
Remote control signal (SIRCS) input
83
TV/OTHER
I
“Connect LINE-1 select “H” : Other, “L” : TV”
84
SYNCHRO REC LED
O
““H” : On, “L” :Off (SYNC REC LED)”
85
NT/PAL EP/LP
O
Not used
86
PICTURE LED
O
“H” : Active (RESOLUTION CONTROL
II
LED)
87
REC LED
O
““H” : On, “L” :Off (REC LED)”
88
T REEL
I
Take-up reel FG input
89
S REEL
I
Supply reel FG input
90
HiFi LED
O
““H” : On, “L” :Off (HiFi LED)”
91
HiFi L LED
O
““H” : On, “L” :Off (Lch LED)”
92
TV/VTR
O
RF output TV/VTR select
93
HiFi R LED
O
““H” : On, “L” : Off (Rch LED)”
94
SHARPNESS PWM
O
Video IC sharpness voltage
95
CAM
O
“CAM motor control “H” : Forward, “M” : Brake “L” : Reverse”
96
CAP QR
O
Capstan step driving
97
AF CLK
O
I2C-bus clock (HiFi)
98
AF DATA
O
I2C-bus data (HiFi)
99
V CLK
O
I2C-bus clock (Video)
100
V DATA
O
I2C-bus data (Video)
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) PAL pattern generator
5) Digital voltmeter
6) Audio level meter
7) Audio noise meter
8) Audio generator
9) Attenuator
10) Alignment tape
4) PAL pattern generator
5) Digital voltmeter
6) Audio level meter
7) Audio noise meter
8) Audio generator
9) Attenuator
10) Alignment tape
Part Code: 8-192-605-36 KRV-51P (PAL)
Part Code: 8-192-605-32 KRV-51N2 (NTSC)
Part Code: 8-192-605-32 KRV-51N2 (NTSC)
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 / KRV-51P)]
2-1-3.
Set-up of Adjustment
In this adjustment, PAL or 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.
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.
PAL
NTSC
Video output
(75
Ω
)
Pattern generator
VCR
VIDEO LINE IN
Monitor TV
VIDEO LINE OUT
SLV-CA30/GA35/GA55/GA65/GF85/SA33/SP70/SP100
Fig. 6-2-1
2-1-5.
Specified I/O Level and Impedance
Input/output terminal
Video inputs
LINE IN
: phono jack
1 Vp-p, 75
Ω
, unbalanced, sync negative
Audio inputs
LINE IN
: phono jacks
47 kW, –7.5 dBs (0 dBs = 0.775 Vrms)
More than 10 kW, –4 dBs
More than 10 kW, –4 dBs
Video outputs
LINE OUT: phono jack
1 Vp-p, 75
1 Vp-p, 75
Ω
, unbalanced, sync negative
Audio outputs
LINE OUT: phono jacks
–7.5 dBs at load impedance 47 k
–7.5 dBs at load impedance 47 k
Ω
Output impedance : less than 10
Ω
Click on the first or last page to see other SLV-CA30TW / SLV-GA35ME / SLV-GA35PL / SLV-GA35PS / SLV-GA35SG / SLV-GA35TH / SLV-GA35TW / SLV-GA55ME / SLV-GA55PL / SLV-GA55PS / SLV-GA55SG / SLV-GA55TH / SLV-GA65MJ / SLV-GF85PL / SLV-GF85PS / SLV-GF85TH / SLV-GF85TW / SLV-SA33TW / SLV-SP100R / SLV-SP70 service manuals if exist.