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5-5E
5-7. MODE CONTROL PIN FUNCTIONS (FR-152 BOARD IC420)
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
Pin Name
VDD
X OUT
VSS
X IN
RESET
AN5
AN4
AN3
AN2
AN1
AN0
CS
D IN
D OUT
CLK
VEE
VEE
LED1
LED2
NC
G1
G2
G3
G4
G5
G6
S17
S16
S15
S14
S13
S12
S11
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1
VDD
I/O
O
I
I
O
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Function
D5V
X’ tal out
Ground.
X’ tal in
RESET input.
Ground.
Ground.
Ground.
Ground.
Ground.
Ground.
FLD chip select signal out.
FLD IIC BUS (data) input.
Not connect.
FLD clock.
–14V
–14V
LED control signal input.
JOG LED control signal output.
Not Connect.
Grid terminal 1.
Grid terminal 2.
Grid treminal 3.
Grid treminal 4.
Grid treminal 5.
Grid treminal 6.
Segment terminal 17.
Segment terminal 16.
Segment terminal 15.
Segment terminal 14.
Segment terminal 13.
Segment terminal 12.
Segment terminal 11.
Segment terminal 10.
Segment terminal 9.
Segment terminal 8.
Segment terminal 7.
Segment terminal 6.
Segment terminal 5.
Segment terminal 4.
Segment terminal 3.
Segment terminal 2.
Segment terminal 1.
D5V
6-1
SECTION 6
ADJUSTMENTS
SLV-SE35/SE50/SE60/SE70/SE80/SX60/SX70/SX80
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)
PAL Pattern generator
5)
Remote commander
6)
Digital voltmeter
7)
Audio generator
8)
Audio level meter
9)
Audio attenuator
10) Alignment tapes
KRV-51P (PAL)
Part No. : 8-192-955-57
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, PAL pattern generator is connected with LINE-
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.
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.
Fig. 6-2-2 Color Bar Signals of Pattern Generator
2-1-4.
Alignment Tape
• Contents of KRV-51P
J480
LINE-2 IN VIDEO
LINE-1 (TV)
CN500
!ª
V 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
Red
Horizontal sync signal
Burst signal
(Should be flat)
(Should be flat)
Approx.
0.3 V
0.3 V
White (75%)
Approx. 0.3 V
Approx. 0.7 V
6-2
2-1-5.
Input/Output Levels and Impedance
Video input: LINE-1 (TV)/LINE-2 IN/LINE-3 IN
Input signal: 1 Vp-p, 75 ohms, unbalanced,
sync negative
sync negative
Video output: LINE-1 (TV)
Output signal: 1 Vp-p, 75 ohms, unbalanced,
sync negative
sync negative
Audio input: LINE-1 (TV)/LINE-2 IN/LINE-3 IN
Input level: –7.5 dBs
(0 dBs= 0.775 Vrms)
Input impedance: more than 47 kilohms
(0 dBs= 0.775 Vrms)
Input impedance: more than 47 kilohms
Audio output:LINE-1 (TV)
Standard level: –7.5 dBs at load impedance 47
kilohms
Output impedance: less than 10 kilohms
kilohms
Output impedance: less than 10 kilohms
2-1-6.
Adjustment Sequence
The adjustments should be performed in the following sequence.
2-2.
POWER SUPPLY CHECK
2-2-1.
Output Voltage Check (MA-339 Board)
Mode
E-E
+38 V Check
Measurement point
CN600 pin
4
Specified value
35.0 to 41.0 V
+13 V Check
Measurement point
CN600 pin
5,6
Specified value
12.5 to 14.5 V
+12 V Check
Measurement point
IC601 pin
2
Specified value
11.0 to 13.0 V
+6 V Check
Measurement point
CN600 pin
!¢
Specified value
5.40 to 6.40 V
+5 V Check
Measurement point
CN600 pin
2, 3
Specified value
4.7 to 5.7 V
MTR12 V Check
Measurement point
CN600 pin
7, 8
Specified value
12.5 to 14.5 V
C +5V Check
Measurement point
D603 Cathode
Specified value
4.5 to 5.5 V
+F, –F Check
Measurement point
CN600 pin
!§, !ª
Specified value
1.9 to 3.9 V
–11 V Check
Measurement point
CN600 pin
!•
Specified value
–12.5 to – 10.5 V
[Check Method]
1)
1)
Each of these supply voltages must meet its specified value.
Power Supply Check
Servo System Adjustments
Audio System Adjustments
6-3
2-3.
SERVO SYSTEM CHECK
2-3-1.
RF Switching Position Adjustment
(MA-339 Board)
(MA-339 Board)
[Adjustment Purpose]
To adjust the link of the A-ch and B-ch of the tape playback outputs.
To make the unit compatible with other tapes and units. If this
specification is not satisfied, the link will appear on the screen and
the screen will be disrupted, etc.
To adjust the link of the A-ch and B-ch of the tape playback outputs.
To make the unit compatible with other tapes and units. If this
specification is not satisfied, the link will appear on the screen and
the screen will be disrupted, etc.
Mode
Playback
Signal
Alignment tape: SP color bar portion
Measurement point
CH1: CN262 pin
1 (PB RF)
CH2: CN262 pin
2 (RF SWP)
Measuring instrument
Oscilloscope
Adjusting element
Remote commander CH+/–
Specified value
A=minimize
[Adjustment Method]
1)
1)
Playback the alignment tape.
2)
Short CN262 pin
5 to Ground.
3)
Check that “A P” is indicated on FL display.
4)
Adjust so that part A becomes minimized at CH +/–.
5)
Write data in EEPROM by pressing PAUSE button.
6)
The display changes to “A H” and the mode goes to the HiFi
switching position Adjustment.
switching position Adjustment.
Fig. 6-2-3
2-4.
AUDIO SYSTEM ADJUSTMENT
• Adjust both L ch and R ch.
[Connecting Instruments]
[Connecting Instruments]
Fig. 6-2-4
2-4-1.
Hi-Fi Audio System Adjustment
• Perform the adjustment setting the switch on the following
positions.
• AUDIO MONITOR ..................................................... STEREO
[Adjustment Method]
1.
1.
ACE head adjustment.....Refer to the VHS mechanical
adjustment manual (S MECHANISM)(9-921-647-11).
adjustment manual (S MECHANISM)(9-921-647-11).
2.
E-E output level check
3.
“Recording Bias Adjustment”
A
CH1
PB RF
CH2
RF SWP
CN500
3
A (L) OUT
4
A GND
Audio line INPUT L/R
Audio oscillator
Attenuator
600
Ω
Audio level meter
or distortion meter
or distortion meter
47 k
Ω
VTR
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