Sony SLV-E130AE1, Service Manual

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7-1
Video signal
Color bar
Monoscope
Color bar
Monoscope
Time
Seven minutes
Three minutes
Seven minutes
Three minutes
During the adjustment, see the Parts Arrangement
Diagram for Adjustment on page 7-6.
7-1. MECHANICAL ADJUSTMENTS
Refer to the SERVICE MANUAL of VHS MECHANICAL AD-
JUSTMENT VI.
7-2. 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.
2-1-1. Instruments to be Used.
1) Color TV
2) Oscilloscope 1or 2 phenomena, band more than 30 MHz, deley
mode, as provided.
3) Frequency counter (min. 8 digits)
4) PAL pattern generator
5) Digital voltmeter
6) Audio level meter
7) Audio noise meter
8) Audio generator
9) Modulation Analyzer
10) Distortion factor meter
11) Attenuator
12) Alignmeter tape
Part Code: 8-192-605-36 (KRV-51P)
2-1-2. Connection
Unless otherwise specified, connect and adjust the measuring in-
struments as shown in the following diagram.
Fig. 7-2-1
2-1-3. Set-up of Adjutment
In this adjustment, PAL pattern generator is connected with LINE
input signal terminal. When check to tuner, connected AERIAL
terminal. Check that the amplitudes of video signal PAL 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. 7-2-2. shows video
signals (color bars) used in adjusting the video section.
Fig. 7-2-2.
2-1-4. Alignment Tape
[Alignment Tape (KRV-51P) ]
Video output
(75
Ω
)
Pattern generator VCR
VIDEO LINE IN
Monitor TV
VIDEO LINE OUT
SECTION 7
ADJUSTMENTS
SLV-E130/E177/E180/E230/E285/E295/E380/E430/E477/E480/E530
1
2
3
4
Mode
SP
EP
Audio signal
(HiFi/Normal)
400 Hz
400 Hz
400 Hz
400 Hz
Approx.
0.7 V
Red
Horizontal sync signal
White (approx. 100%)
Burst signal
(To be flat)
Approx.
0.3 V
Approx.
0.3 V