Sony SLV-L45AR / SLV-L65HFAR / SLV-L75HFAR Service Manual ▷ View online
6-2
SELF-DIAGNOSIS DISPLAY
Mechanism Mode Display / Head Output Drop Warning Display / Cylinder Rotation Accumulated
Time Display
This unit displays the diagnosis contents of abnormalities and the mechanism, mode on its display panel in 2-digit numbers.
When the head playback output has dropped, the “ L” sign will be blinked. Some models (listed later) will also display the cylinder
rotation accumulated time.
These display shows the outline of the problems. Use it as a reference when servicing the unit.
When the head playback output has dropped, the “ L” sign will be blinked. Some models (listed later) will also display the cylinder
rotation accumulated time.
These display shows the outline of the problems. Use it as a reference when servicing the unit.
1. Self-Diagnosis Contents and Mechanism Mode Display
• When the STOP button on the remote control is pressed for about 10 seconds continuously, the self- diagnosis number
will be displayed on the reception channel display of the display panel and number indicating the failed mechanism mode
(changed mode when being shifted) on the tape counter “seconds” display for 10 seconds each.
(changed mode when being shifted) on the tape counter “seconds” display for 10 seconds each.
• During self-diagnosis display, displays other than the diagnosis number/mechanism mode number and the cylinder
accumulated rotation time display described later (some models only) will be turned off and when displays end, the
normal display will be returned automatically.
normal display will be returned automatically.
• Refer to “Self-Diagnosis Contents” for the self-diagnosis numbers and the “Mechanism Mode Display Contents” for the
mechanism mode numbers.
• When the “0” button on the remote control unit is pressed during display, and clearing the self-diagnosis display and
mechanism mode display.
No.
Problem
Main Possible Cause
Mechanism Operations and
State After Occurrence
State After Occurrence
00 There is no abnormality in the mechanism.
The cylinder motor does not rotate.
• The cylinder motor is faulty.
Shifts to the STOP mode.
01
• The control of the cylinder motor is
faulty.
• The tape winds around the cylinder.
faulty.
• The tape winds around the cylinder.
The take-up reel does not rotate.
• The take-up reel is caught.
Shifts to the STOP mode.
02
• The reel belt is faulty.
• The take-up torque has decreased.
• The take-up torque has decreased.
The capstan motor does not rotate.
• The capstan motor is faulty.
Shifts to the STOP mode.
03
• The control of the capstan motor is
fauIty .
fauIty .
The tape cannot be loaded with the
• Error in the operations of the tape
Unloads, shifts to the INITIAL mode,
cassette inserted.
loading mechanism.
and the power goes off.
(But unloading can be performed.)
• Foreign particles in the tape
04
loading mechanism.
• The tape end sensor is faulty.
• The reel brake of the tape cassette
has not been released.
• The tape end sensor is faulty.
• The reel brake of the tape cassette
has not been released.
Tape loading and unloading cannot
• The tape guide is caught.
The power is forcibly turned off with
05
be performed with the cassette
• The loading motor is faulty.
the mechanism at its current position.
inserted.
• The control of the loading motor is
faulty.
faulty.
Self-Diagnosis Contents
Display panel
Self-Diagnosis number
(Reception channel display)
(Reception channel display)
Mechanism mode number
(Tape counter “Seconds” display)
(Tape counter “Seconds” display)
6-3
No.
Problem
Main Possible Cause
Mechanism Operations and
State After Occurrence
State After Occurrence
Front unloading cannot be performed • The cassette drive mechanism is
Front loads and shifts to the STOP or
when ejecting the cassette.
faulty .
INITIAL mode.
(Front loading can be performed.)
• The front door is caught.
• When the power switch is turned on
before eject operations: Shifts to the
before eject operations: Shifts to the
06
STOP mode.
• When the power switch is turned off
before eject operations: Shifts to the
INITIAL mode and the power goes
off.
• When the power switch is turned off
before eject operations: Shifts to the
INITIAL mode and the power goes
off.
Front loading and front unloading
• The tape cassette is caught in the
The power is forcibly turned off with
cannot be performed when ejecting
cassette drive mechanism.
the mechanism at its current position.
the cassette.
• The main cam and front rack gear of
07
the front loading mechanism have
not engaged properly.
• The gears of the front loading drive
mechanism have not engaged
properly.
not engaged properly.
• The gears of the front loading drive
mechanism have not engaged
properly.
The mechanism becomes 1(REVIEW)
• The mechanism mode switch
The power is forcibly turned off with
08
while moving from 2 (IDLER),
contact is faulty.
the mechanism at its current position.
3 (STILL), 4 (BRAKE), and to
5 (STOP).
5 (STOP).
The mechanism becomes 7 (INITIAL)
• The mechanism mode switch
Carries out tape take-up operations,
09
while moving from 1 (REVIEW),
contact is faulty.
shifts to the INITIAL mode,
2 (IDLER), 3(STILL), 4 (BRAKE),
and the power goes off.
and to 5 (STOP).
The capstan motor does not rotate
• The capstan motor is faulty.
Shifts to the STANDBY mode.
10 and cassette tape eject when
• The control of the capstan motor is
Protect cassette tape.
cassette tape insert.
faulty.
The cylinder motor does not rotate
• The cylinder motor is faulty.
Shifts to the STANDBY mode.
11 and cassette tape eject when
• The control of the cylinder motor is
Protect cassette tape.
cassette tape insert.
faulty.
Note:
For details of mechanism operations corresponding to the mechanism positions of the self-diagnosis numbers 08
and 09 above, refer to the separate volume on the V95
and 09 above, refer to the separate volume on the V95
Ι
mechanism manual.
These manual reference numbers are shown in the cover.
Mechanism Mode Display Contents
Mode No.
Mechanism Mode
Mode No.
Mechanism Mode
Mode No.
Mechanism Mode
00
CASSETTE OUT
08
PLAY
16
VIDEO INSERT
01
STANDBY
09
REC
17
VIDEO INSERT – PAUSE
02
STOP
10
AUDIO DUBBING
18
AUDIO/VIDEO INSERT
03
STILL
11
X2 SPEED PLAY
19
REVERSE X2 SPEED PLAY
04
REC-PAUSE
12
CUE
05
AUDIO DUBBING – PAUSE
13
REVIEW
06
FRAME ADVANCE
14
FAST FORWARD
07
SLOW
15
REWIND
99
OTHERS
6-4
2. ELECTRICAL ADJUSTMENT
VCR PRESETTING
This VCR need three basic presetting by using the menus displayed on-screen. After all connection have been made, then
follow steps 1 to 3 to preset the VCR.
The three presetting steps will be displayed in sequence on TV screen. The setting are entered with the remote control.
follow steps 1 to 3 to preset the VCR.
The three presetting steps will be displayed in sequence on TV screen. The setting are entered with the remote control.
Turn on the VCR
1. Adjusting the TV receiver to the video channel: The AUTO SETUP screen will appear. When the video channel has
1. Adjusting the TV receiver to the video channel: The AUTO SETUP screen will appear. When the video channel has
been preset, press the OK button on the remote control.
2. Country selection: Using the numeric button, select the country of use.
3. Language selection: When the desired language has been select, press the MENU / TV button directly before prevent
3. Language selection: When the desired language has been select, press the MENU / TV button directly before prevent
auto tuning will start.
When steps 1 to 3 have been finish, ready to operate the all operating mode.
2-1. SERVO CIRCUIT ADJUSTMENT
• These adjustments should be done upon completion of the tape transport adjustments.
• If the tape transport adjustments (except the tilt adjustment) are done after these adjustments, follow the procedures
• If the tape transport adjustments (except the tilt adjustment) are done after these adjustments, follow the procedures
again in section 2-1-3, “switching position adj.”
• When a cassette tape is loaded, auto-tracking will be set immediately after starting the first playback. As this will daviate
the tracking center set, be sure to press the channel buttons (
4
) or (
$
) once directly after starting playback to prevent
auto-tracking from being set.
Oscilloscope
Vertical sensitivity
: 5 mV/DIV, external trigger
Bandwidth
: more than 10 MHz
Alignment Tape
KRV-51P (8-192-605-36)
: SP mode, monoscope. 400 Hz
Blank Tape
VHS-type cassette tape
Monitor TV
CP-1 PWB (Foil side)
Fig. 2-1-1
VR351
VR631
TP633
VR634
VR632
VR635
VR633
TP631
TP635
SLV-L65HFAR/L75HFAR only
TP101
2-1-1. TEST EQUIPMENT AND STANDARDS REQUIRED
2-1-2. LOCATION OF ADJUSTMENT POINTS
6-5
VP-1 PWB Assembly
TP183
(SW-P)
(SW-P)
TP182
(ENV.)
(ENV.)
Fig. 2-1-2
Note:
• Set the REC/PLAY SPEED button to indicator panel in
the SP mode.
• Self-recording means “Record any broadcasting or video
signal and playback the just-recorded portion.”
2-1-3. SWITCHING POSITION ADJ.
Measuring Point
Measuring Equipment
Adj. Condition
TP101
Oscilloscope
PLAY (SP) mode
(VIDEO OUT)
Alignment tape
TP183
(KRV-51P)
(RF SW-P)
Adj. Location
Adj. Value
REC button
CHANNEL (
CHANNEL (
4
/
$
) button
6.5 H
±
0.5 H
PLAY button
1.
At playback starts, press the REC button 3 times within
3 seconds after the playback picture comes out. However,
these 3-push must be done within 2 seconds, and last
push must be kept pressed for 0.5 seconds. (Fig. 2-1-3)
3 seconds after the playback picture comes out. However,
these 3-push must be done within 2 seconds, and last
push must be kept pressed for 0.5 seconds. (Fig. 2-1-3)
2.
"P 0:00" is appeared in FLD, and it becomes the
adjustment mode. This indication value changes
automatically, and 6.5H adjustment is done. When this
value stops, adjustment value almost becomes 6.5H.
adjustment mode. This indication value changes
automatically, and 6.5H adjustment is done. When this
value stops, adjustment value almost becomes 6.5H.
3.
Observe the video output signal by the oscilloscope,
triggered by the fall down point of RF SW PULSE
(TP183), and confirm that a front edge of V-SYNC is
delayed for 6.5 H
triggered by the fall down point of RF SW PULSE
(TP183), and confirm that a front edge of V-SYNC is
delayed for 6.5 H
±
0.5 H from the fall down point of RF
SW PULSE. (Fig. 2-1-4)
4.
After the adjustment data is fixed (it should be within 15
seconds from the adjustment mode start), press the
PLAY button more than 1 second. Then the indication
changes to "P – : – ", it writes the data (delay quantity)
to theE
seconds from the adjustment mode start), press the
PLAY button more than 1 second. Then the indication
changes to "P – : – ", it writes the data (delay quantity)
to theE
2
PROM. (If it passes through 15 seconds before
pushing the PLAY button, the intake of the data isn't
done, and it finishes the adjustment mode.)
done, and it finishes the adjustment mode.)
5.
If it is not in 6.5 H
±
0.5 at the time of the confirmation by
the above 3., make manual fine adjustment by pressing
the CHANNEL button, and do the operation of 4.
the CHANNEL button, and do the operation of 4.
T = 6.5H
±
0.5H
0.5H
Within 3
secs.
secs.
Start of play
back display
back display
REC button
ON
ON
Within 2
secs.
secs.
More
than
0.5
secs.
than
0.5
secs.
Adjusting
period
15 secs.
period
15 secs.
1H
Fall
RF. SW. PULSE
Front edge of
vertical sync signal
vertical sync signal
Fig. 2-1-4
Fig. 2-1-3
Measuring Point
Measuring Equipment
Adj. Condition
Picture of
Monoscope pattern
Self-recording
monitor
(SP mode)
STILL mode
STILL mode
Adj. Location
Adj. Value
CHANNEL (
4
) or (
$
) button
The minimum vertical shake
2-1-4. SP STIL V-LOCK ADJ.
1.
Set the REC/PLAY SPEED button to the SP model.
2.
Play back the own recorded portion of the tape and then
set the VCR in the STILL mode.
set the VCR in the STILL mode.
3.
Press the CHANNEL (
4
) or (
$
) button so that the vertical
shake of picture becomes its minimum.
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