Read Sony SLV-E160EE / SLV-E290EE / SLV-E290EG / SLV-E410AP / SLV-E410CP / SLV-E410EE / SLV-E410EX / SLV-E410IT / SLV-E410UX / SLV-E410VP Service Manual online
2-3.
SERVO SYSTEM CHECK
Unless otherwise specified, set the switches to the following
positions.
•
Switch ………………………………LINE
•
Switch …………………………………SP
2-3-1.
RF Switching Position Check
(MA-249, RP-196 Boards)
[Adjustment Purpose]
To check 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: Video LINE OUT terminal
CH2: CN002 pin e (RF SWP)
(RP-196 board)
Measuring instrument
Oscilloscope
Specified value
6.5 ± 0.5H (416 ± 32 µSEC)
[Check Method]
1) Set
switch to MANUAL. (“Auto tracking”
display will disappear on the display window indicator.)
2) Press the tracking buttons
and
and adjust the tracking
position to the center.
3) Confirm the specified value 416 ± 32µSEC (6.5±0.5H)
Fig. 7-2-3.
2-4.
VIDEO SYSTEM CHECKS
For the video system checks, follow the checking procedures
given below as a rule. The color bar video signal supplied from the
pattern generator is used as the video input signal for the video
system adjustment of the recording mode. Check that the signal
satisfies the specified value designated in the “Check of input
signal” (Fig. 7-2-2)
Unless otherwise specified, set the switches to the following
positions.
•
Switch ………………………………LINE
•
Switch …………………………………SP
[Checking Sequence]
1) X'tal OSC Check
2) SYNC AGC Check
3) White clip/Dark clip Check
4) Recording Y Level Check
5) Recording Chroma Level Check
6) Playback Level Check
2-4-1.
X'tal OSC Check (MA-249 Board)
Mode Playback
Signal
Alignment tape: SP Color bar
portion
Measurement point
IC201 pin @3
Measuring instrument
Oscilloscope and Frequency
counter
Specified value
4,433,619 ± 90Hz
Note:
A frequency counter should be connected through
a buffer amplifier (oscilloscope, etc.) having a high
impedance and a low capacitance.
[Check Method]
1) Check that the oscillation frequency satisfies the specified
value and that the oscillation voltage is 450 ± 200mVp-p.
Fig. 7-2-4.
TAPE SPEED
CHANNEL
▲
▼
TRACKING
TAPE SPEED
CHANNEL
7-3
CH1
CH2
(CN002 PIN
e
(RF SWP))
6.5
±
0.5H
(416
±
32
µ
sec)
Vertical sync. signal
enlarrgement
V
CH1
CH2
Approx.
1Vp-p
1Vp-p
Approx.
5Vp-p
5Vp-p
Normal tracking
Moves to the right when the
▲
button is pressed
and to the left when the
▼
button is pressed.
450
±
200mVp-p
4,433,619
±
90Hz
Click on the first or last page to see other SLV-E160EE / SLV-E290EE / SLV-E290EG / SLV-E410AP / SLV-E410CP / SLV-E410EE / SLV-E410EX / SLV-E410IT / SLV-E410UX / SLV-E410VP service manuals if exist.