Adjustments; Mechanical Adjustments; Electrical Adjustments; Preparation Before Adjustment - Sony SLV-M10HF Service Manual

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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 parts location diagram from on page 6-8
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 30MHz or more, with
delay mode (A probe 10:1 should be used unless otherwise
specified.)
3) Frequency counter
4) Pattern generator
5) Digital voltmeter
6) Audio generator
7) Audio level meter
8) Audio distortion meter
9) Audio attenuator
10) Alignment tapes
KRV-51N2

2-1-2. Equipment Connection

Unless otherwise specified, connect and adjust the measuring
TE
L 13942296513
instruments as shown in the following diagram.
VIDEO LINE IN
Pattern generator
Video output
(75 Ω )
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Part No.: 8-192-605-32
VCR Monitor TV
VIDEO LINE OUT
Fig. 6-2-1.
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SECTION 6

ADJUSTMENTS

2 9
8

2-1-3. Input Signal Check

Video signal produced by a pattern generator is used as an adjustment
signal to perform electrical alignment for this unit. This video signal
must satisfy the specification.
Unless otherwise specified, place the switches and controls of this
unit in the following positions:
• INPUT SELECT switch ............................. LINE or LINE 1
Connect an oscilloscope to the Video Input terminal. Check that the
synchronizing signal of the Y signal has an amplitude of
approximately 0.7V and that the burst signal has an amplitude of
approximately 0.3V 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.
About 0.7 V
About
0.3 V
Horizontal sync signal
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3 6 7 1 3
Fig. 6-2-2. Color Bar Signals of Pattern Generator

2-1-4. Alignment Tape

• Contents of KRV-51N2
Mode
1 7 minutes
SP
2 3 minutes
3 7 minutes
EP
4 3 minutes
.
6-1
9 4 2 8
(Remote commander)
White (100%)
Red
1 5 0 5 8 2 9 9 4
Period Video signal
Hi-Fi
Color bar
Monoscope
400Hz
Color bar
Monoscope
m
co
SLV-M10HF
9 9
About
0.3 V
Burst signal
(It must be flat.)
2 8 9 9
Audio signal
Normal
400Hz