6-1
MECHANICAL ADJUSTMENTS
For the mechanical adjustments, please refer to the
"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.
2-1.
PREPARATION BEFORE ADJUSTMENT
2-1-1.
Equipment Required
The measuring instruments used for this alignment include:
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.)
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.
VIDEO LINE IN
Pattern generator
Video output
(75Ω)
Fig. 6-2-1
SECTION 6
ADJUSTMENTS
Monitor TV
VCR
VIDEO LINE OUT
SLV-LX40/LX50/LX60S/LX70S
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.
NTSC model
About 0.7 V
About
0.3 V
Horizontal sync signal
Fig. 6-2-2 Color Bar Signals of Pattern Generator
2-1-4.
Alignment Tape
• Contents of KRV-51N2
Mode
Period
Video signal
1
7 minutes
Color bar
SP
2
3 minutes
Monoscope
3
7 minutes
Color bar
LP
4
3 minutes
Monoscope
6-1
White (100%)
About
0.3 V
Red
Burst signal
(It must be flat.)
Audio signal
Hi-Fi
Normal
400Hz
400Hz
(L/R)