SLV-GA35MK2, SLV-GA36, SLV-GA45AV, SLV-GA55MK2, SLV-GA59, SLV-GF85MK2, SLV-GF86, SLV-SA34 - Sony VCR Service Manual (repair manual). Page 10

Read Sony SLV-GA35MK2 / SLV-GA36 / SLV-GA45AV / SLV-GA55MK2 / SLV-GA59 / SLV-GF85MK2 / SLV-GF86 / SLV-SA34 Service Manual online

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Additional Information
24
Playback
Symptom
The 
?/1 POWER switch
does not function.
The power is turned on but the
unit does not operate.
The unit enters standby mode
or turns off automatically.
The playback picture does not
appear on the TV screen.
The picture is not clear.
The picture rolls vertically
during picture search.
The picture has no sound.
Troubleshooting
If you have any questions or problems not covered below, please
consult your nearest Sony service facility.
Power
Remedy
• Connect the AC power cord securely.
• Moisture condensation has occured. Turn the power
off, unplug the power cord and leave the unit to dry
for over four hours.
• The auto safety system is triggered to protect your tape
and the unit’s mechanism when there is something
wrong with the tape or when the mechanism is
overloaded. Press 
?/1 POWER to restart the unit. If
the unit does not work after pressing 
?/1 POWER
again, disconnect the power cord from the wall outlet.
Wait for at least 15 seconds. Then reconnect the power
cord, and press 
?/1 POWER again. If the unit still
does not work, please consult your nearest Sony
service facility.
• Make sure the TV is set to the video channel. If you are
using a monitor, set it to video input.
• Adjust the tracking with the 
V/v TRACKING
NORMAL/SLOW/STILL ADJUST buttons.
• The video heads are dirty (see next page). Clean the
video heads using the Sony T-25CLD, T-25CLW or T-
25CLDR video head cleaning cassette. If these cleaning
cassettes are not available in your area, have the heads
cleaned at your nearest Sony service facility (a
standard service charge will be required). Do not use a
commercially available liquid type cleaning cassette, as
it may damage the video heads.
• If a message appears, this indicates that the Head
Condition Sensor has detected dirty video heads.
Follow the on-screen message. For details about the
Head Condition Sensor, see page 26.
• The video heads may have to be replaced. Consult
your local Sony service facility for more information.
• Adjust the vertical hold control on the TV or monitor.
• The tape is defective.
• If you made A/V connections, check the audio cable
connection.
25
Additional Information
Recor
ding
Others
• Normal picture
• Rough picture
• Unclear picture
• No picture (or
black & white
screen appears)
initial
contamination
terminal
Symptom
The tape starts playing as soon
as it is inserted.
The tape is ejected when you
press 
r REC.
Nothing happens when you
press 
r REC.
A tape cannot be inserted.
The remote commander does
not function.
The unit needs to be cleaned.
The indicator lights on the unit
are flashing.
The RESOLUTION CONTROL III
menu appears automatically.
Auto head cleaner
The unit incorporates an auto head cleaner which cleans the video
heads when a tape is loaded or unloaded. When the heads are not
sufficiently clean, even after a tape has been loaded/unloaded several
times, use a video head cleaning cassette.
Symptoms caused by contaminated video heads
Remedy
• The safety tab has been removed. To record on this
tape, cover the tab hole.
• Check that the safety tab has not been removed.
• Make sure the tape is not at its end.
• Check that a tape is not already in the tape
compartment.
• Make sure you are pointing the remote commander at
the remote sensor on the unit.
• Replace all of the batteries in the remote commander
with new ones if they are weak.
• Clean the cabinet, panel, and controls with a dry soft
cloth, or a soft cloth slightly moistened with a mild
detergent solution. Do not use any type of solvent,
such as alcohol or benzine.
• The demonstration mode has been turned on. Cancel
the demonstration mode by pressing STD PICT.
continued
Additional Information
26
Sapphire tape cleaner
The unit incorporates a sapphire tape cleaner which cleans a video tape when it is
loaded. This cleaner can prevent the video heads from contamination by removing
dust or mold from a tape with its sapphire edge.
Head condition sensor
The Head Condition Sensor checks the condition of the video heads. If the heads are
dirty, a message will instruct you to insert a video head cleaning cassette. Be sure to
use the Sony T-25CLD, T-25CLW or T-25CLDR video head cleaning cassette. If these
cleaning cassettes are not available in your area, have the head cleaned at your nearest
Sony Service (a standard service charge will be required).
Troubleshooting (continued)
27
Additional Information
System
Format
VHS NTSC standard
Video recording system
Rotary head helical scanning FM system
Video heads
Double azimuth two heads
Video signal
NTSC color, EIA standards
Tape speed
SP: 33.35 mm/s
EP: 11.11 mm/s
Maximum recording/playback time
9 hrs. in EP mode (with T-180 tape)
Fast-forward and rewind time
Approx. 4 min. 30 sec. (with T-120 tape)
Tuner section
RF output channel
VHF channel 3 or 4
Antenna
75-ohm antenna terminal for VHF/UHF
Inputs and outputs
LINE 1 IN
VIDEO IN, phono jack (1)
Input signal: 1 Vp-p, 75 ohms,
unbalanced, sync negative
AUDIO IN, phono jacks (2)
Input level: 327 mVrms
Input impedance: more than 47 kilohms
LINE 1 OUT
VIDEO OUT, phono jack (1)
Output signal: 1 Vp-p, 75 ohms,
unbalanced, sync negative
AUDIO OUT, phono jacks (2)
Standard output: 327 mVrms
Load impedance: 47 kilohms
Output impedance: less than 10 kilohms
Specifications
General
Power requirements
110 – 240 V AC, 50/60 Hz
Power consumption
12 W
Operating temperature
5°C to 40°C
Storage temperature
–20°C to 60°C
Dimensions
Approx. 355 
×
 96 
×
 293 mm (w/h/d)
including projecting parts and controls
Mass
Approx. 3.8 kg
Supplied accessories
Remote commander (1)
R6 (Size AA) batteries (2)
75-ohm coaxial cable with F-type connectors (1)
Audio/video cable (3-phono to 3-phono) (1)
Design and specifications are subject to change
without notice.
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