Video head cleaning specifications – JVC TV 13140 User Manual

Page 25

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VIDEO HEAD CLEANING

SPECIFICATIONS

VIDEO HEAD CLOGGING

The video heads are the means by which the TV/VCR reads the picture from the tape during playback, in the
unlikely event that the heads become dirty enough to be clogged, no picture will be played back. This can easily be
determined if, during playback of a known good tape, there is good sound, but no picture (picture is extremely
snowy). If this is the case, have the TV/VCR checked by qualified service personnel.

Good Picture

Snowy Picture

TELEVISION

Picture Tube:

Tuner Type:
Receiving Channels:

VIDEO HEAD CLEANING

AUTO HEAD CLEANING system cleans the video heads aulofrratically when a cassette is inserted or ejected to
prevent dirt from accumulating on the heads. However, manual head cleaning is nseded if the picture on playback is
still undear although the picture on program is normal. This failure signifies that the head is getting dirty and occurs
when playing poor quality or damaged tapes. If the heads require cleaning, use a high quality head cleaning system
or have them cleaned professionally.

NOTE: • DO NOT ATTEMPT TO CLEAN THE VIDEO HEADS OR SERVICE THE UNIT BY REMOVING THE REAR

COVER.

• Video heads may eventually wear out and should be replaced when they fail to produce clear pictures.
• To help prevent video head clogging, use only good quality VHS tapes. Discard worn out tapes.

Antenna Input:
Speaker
Audio Output Power:

VCR
Video System:
Video Signal:
Cassette Tape:
Audio Track:
Tape Speed:

F.FWD/REWTime:

Speed Search:

GENERAL

Power Source:
Power Consumption:
Dimensions:

Weight:
Inputs/Outputs:

Storage Temperature:

Operating Temperature:

13’ (measured diagonally)

Quartz PLL Frequency Synthesized
VHF

2-13

UHF

14-69

CATV 14-36 (A)-(W)

37-59 (AA)-(WW)
60-85 (AAA)-(ZZZ)
86-94 (86)-{94)
95-99 (A-5)-(A-1)

100-125 (100)-(125)

01 (5A)

VHF/UHF In 75 ohms coaxial

1.5" X 2.5", 8 ohms x 1
1.5W

VHS, 4 Rotary Heads Helical Scanning System.
NTSC Color

VHS

1 Track

SP: 33,35 mm/sec.

EP: 11.12 mm/sec.
F.FWD: Approx. 2 minutes and 15 seconds
REW: Approx. 1 minule and 48 seconds

(T-120 Cassette)
SP 3 & 5

Normai Speed

EP 9 & IS X Normal Speed

AC 120V60HZ
70 Watts

W 14 1/4’X D 14 1/2’xH 15 1/16"
26 lbs
Video:

In (RCA) 1 Vp-p 75 ohm
Out (RCA) 1 Vp-p 75 ohm

Audio:

In (RCA) 300 mV/50K ohm
Out (RCA) 300 mV/IKohm

-20°C to 60°C (-4°Fto 140“F)

5“C to 40“C (41»Fto 104°F)

Accessories:
Remote Control
Batteries (AA) X 2

Specifications are subject to change without notice.

CJ1