Adjustments; Mechanical Adjustments; Electrical Adjustments; Pre-Adjustment Preparations - Sony SLV-E580EE Service Manual

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3 7 63 1515 0
During the adjustment, see the Parts Arrangement
Diagram for Adjustment on page 7-8.

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 generator
8) Modulation Analyzer
9) Distortion factor meter
10) Attenuator
11) Alignmeter tape
Part Code: 8-192-605-36 (KRV-51P)
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SLV-E580/E630/E727/E730/E735/E780
SECTION 7 2 9
8

ADJUSTMENTS

2-1-2.

Connection

Unless otherwise specified, connect and adjust the measuring in-
struments as shown in the following diagram.
Pattern generator
Video output
(75 Ω)
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.
Q Q
3 6 7 1 3 1 5
Approx.
0.7 V
Approx.
0.3 V
2-1-4.

Alignment Tape

[Alignment Tape (KRV-51P) ]
Mode
1 Seven minutes
SP
2
3 Seven minutes
EP
4
co
.
7-1
9 4 2 8
VIDEO LINE IN
VCR
VIDEO LINE OUT
Fig. 7-2-1
White (approx. 100%)
0 5 8 2 9 9 4
Red
Horizontal sync signal
Fig. 7-2-2.
Time Video signal
Color bar
Three minutes Monoscope
Color bar
Three minutes Monoscope
m
9 9
Monitor TV
2 8 9 9
Burst signal
(To be flat)
Approx.
0.3 V
Audio signal
(HiFi/Normal)
400 Hz
400 Hz
400 Hz
400 Hz