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SERVICE MANUAL
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
No.52123
2003/05
AV-16KG21
AV-16KG11
COLOUR TELEVISION
52123
2003
05
AV-16KG21/ Y
AV-16KG11/ Y
TABLE OF CONTENTS
1
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
RM-C91
TEXT
MENU
POWER
DISPLAY
SYSTEM
COLOUR SOUND
MUTING
RETURN
TV/TEXT
CHANNEL
SCAN
PICTURE
MODE
OFF
TIMER
TV/ VIDEO
CHANNEL
VOLUME
SUBPAGE
REVEL
HOLD
INDEX
SIZE
CANCEL
12
3
45
6
78
9
0
-/--
POWER
12
3
45
6
78
9
RETURN
+
0
-/--
PICTURE
MODE
SYSTEM
COLOUR
TV/VIDEO
CHANNEL
SCAN
OFF
TIMER
DISPLAY
MENU
CHANNEL
REMOTE CONTROL UNIT
RM-C360GY
VOLUME
MUTING
SOUND
12
3
45
6
78
9
0
-/--
RM-C91
[AV-16KG21]
RM-C360GY
[AV-16KG11]
BASIC CHASSIS
CG


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AV-16KG21
AV-16KG11
1-2 (No.52123)
SPECIFICATION
Design and specifications are subject to change without notice.
Item
Content
AV-16KG21
AV-16KG11
Dimensions (W
× H × D)
51.2cm
× 38.1cm × 40.3cm
Mass
12.5kg
TV RF System
B/G, I, D/K, K1, M
Colour System
RF Mode
PAL / SECAM / NTSC3.58 / NTSC4.43
VIDEO Mode
PAL / SECAM / NTSC3.58 / NTSC4.43
Teletext System
FLOF, WST
×
Receiving Frequency
VHF (VL)
46.25MHz~140.25MHz
VHF (VH)
147.25MHz~423.25MHz
UHF
431.25MHz~863.25MHz
CATV
Mid: X-Z, S1-S10
Super: S11-S20
Hyper: S21-S41
Intermediate
Frequency
VIF Carrier
38.0MHz
SIF Carrier
32.5MHz(5.5MHz) / 33.5MHz (4.5MHz)
31.5MHz (6.5MHz)
32.0MHz (6.0MHz)
Colour Sub Carrier
Frequency
PAL
4.43MHz
SECAM
4.40625MHz / 4.25MHz
NTSC
3.58MHz / 4.43MHz
Power Input
AC110V~AC240V, 50Hz / 60Hz
Power Consumption
75W (Max) / 55W(Avg)
Picture Tube
Visible size: 38cm measured diagonally ( W : 33.2cm
× H : 25.1cm)
High Voltage
23.0kV±1.5kV(at zero beam current)
Speaker
5cm
× 9cm, Oval type × 2
Audio Power Output
3W (monaural)
Aerial Input Terminal
75
unbalanced, coaxial
Input Terminal
Video
1V(p-p), 75
, RCA pin jack × 2 (Front / Rear)
Audio
500mV(rms) (-4dBs), High impedance,
RCA pin jack
× 2 (Front) / RCA pin jack × 1 (Rear)
Output Terminal
Video
1V(p-p), 75
, RCA pin jack × 1
Audio
500mV(rms) (-4dBs), Low impedance,
RCA pin jack
× 1
Headphone Jack
3.5mm mini jack
Remote Control Unit
RM-C91 (Battery size : AA / R6 / UM-3
× 2)
RM-C360GY (Battery size : AA / R6 / UM-3
× 2)


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AV-16KG21
AV-16KG11
(No.52123)1-3
SECTION 1
PRECAUTIONS
1.1
SAFETY PRECAUTIONS
(1) The design of this product contains special hardware,
many circuits and components specially for safety
purposes. For continued protection, no changes should be
made to the original design unless authorized in writing by
the manufacturer. Replacement parts must be identical to
those used in the original circuits. Service should be
performed by qualified personnel only.
(2) Alterations of the design or circuitry of the products should
not be made. Any design alterations or additions will void
the manufacturer's warranty and will further relieve the
manufacturer of responsibility for personal injury or
property damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special
safety-related
characteristics.
These
characteristics are often not evident from visual inspection
nor can the protection afforded by them necessarily be
obtained by using replacement components rated for
higher voltage, wattage, etc. Replacement parts which
have these special safety characteristics are identified in
the parts list of Service manual. Electrical components
having such features are identified by shading on the
schematics and by (
) on the parts list in Service
manual. The use of a substitute replacement which does
not
have
the
same
safety
characteristics
as
the
recommended replacement part shown in the parts list of
Service manual may cause shock, fire, or other hazards.
(4) Don't short between the LIVE side ground and
ISOLATED (NEUTRAL) side ground or EARTH side
ground when repairing.
Some model's power circuit is partly different in the GND.
The difference of the GND is shown by the LIVE : (
) side
GND, the ISOLATED (NEUTRAL) : (
) side GND and
EARTH : (
) side GND.
Don't short between the LIVE side GND and ISOLATED
(NEUTRAL) side GND or EARTH side GND and never
measure the LIVE side GND and ISOLATED (NEUTRAL)
side GND or EARTH side GND at the same time with a
measuring apparatus (oscilloscope etc.). If above note will
not be kept, a fuse or any parts will be broken.
(5) If any repair has been made to the chassis, it is
recommended that the B1 setting should be checked or
adjusted (See ADJUSTMENT OF B1 POWER SUPPLY).
(6) The high voltage applied to the picture tube must conform
with that specified in Service manual. Excessive high
voltage can cause an increase in X-Ray emission, arcing
and possible component damage, therefore operation
under excessive high voltage conditions should be kept to
a minimum, or should be prevented. If severe arcing
occurs, remove the AC power immediately and determine
the cause by visual inspection (incorrect installation,
cracked or melted high voltage harness, poor soldering,
etc.). To maintain the proper minimum level of soft X-Ray
emission, components in the high voltage circuitry
including the picture tube must be the exact replacements
or alternatives approved by the manufacturer of the
complete product.
(7) Do not check high voltage by drawing an arc. Use a high
voltage meter or a high voltage probe with a VTVM.
Discharge the picture tube before attempting meter
connection, by connecting a clip lead to the ground frame
and connecting the other end of the lead through a 10k
2W resistor to the anode button.
(8) When service is required, observe the original lead dress.
Extra precaution should be given to assure correct lead
dress in the high voltage circuit area. Where a short circuit
has occurred, those components that indicate evidence of
overheating
should
be
replaced.
Always
use
the
manufacturer's replacement components.
(9) Isolation Check (Safety for Electrical Shock Hazard)
After re-assembling the product, always perform an
isolation check on the exposed metal parts of the cabinet
(antenna terminals, video/audio input and output terminals,
Control knobs, metal cabinet, screw heads, earphone jack,
control shafts, etc.) to be sure the product is safe to operate
without danger of electrical shock.
a) Dielectric Strength Test
The isolation between the AC primary circuit and all metal
parts exposed to the user, particularly any exposed metal
part having a return path to the chassis should withstand a
voltage of 3000V AC (r.m.s.) for a period of one second. (.
. . . Withstand a voltage of 1100V AC (r.m.s.) to an
appliance rated up to 120V, and 3000V AC (r.m.s.) to an
appliance rated 200V or more, for a period of one second.)
This method of test requires a test equipment not generally
found in the service trade.
b) Leakage Current Check
Plug the AC line cord directly into the AC outlet (do not use
a line isolation transformer during this check.). Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal part of the cabinet, particularly
any exposed metal part having a return path to the chassis,
to a known good earth ground (water pipe, etc.). Any
leakage current must not exceed 0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.2mA AC
(r.m.s.).
Alternate Check Method
Plug the AC line cord directly into the AC outlet (do not
use a line isolation transformer during this check.). Use
an AC voltmeter having 1000
per volt or more
sensitivity in the following manner. Connect a 1500
10W resistor paralleled by a 0.15
µF AC-type capacitor
between an exposed metal part and a known good earth
ground (water pipe, etc.). Measure the AC voltage
across the resistor with the AC voltmeter. Move the
resistor connection to each exposed metal part,
particularly any exposed metal part having a return path
to the chassis, and measure the AC voltage across the
resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Any voltage measured must
not exceed 0.75V AC (r.m.s.). This corresponds to
0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.3V AC
(r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
AC VOLTMETER
(HAVING 1000 /V,
OR MORE SENSITIVITY)
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
1500
10W
0.15 F AC-TYPE
GOOD EARTH GROUND


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AV-16KG21
AV-16KG11
1-4 (No.52123)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1
FEATURES
· New chassis design enables use of an interactive on-screen control.
· Wide range voltage (110V~240V) AC power input.
· With AUDIO / VIDEO INPUT & OUTPUT terminal.
· MUTING button can reduce the audio level to zero instantly.
· Functional remote control to operate TV set (for channel select, volume control, power ON/OFF, etc.) from a distance.
·I2C bus control utilizes single chip ICs for IF, V/C, DEF and VSM PRESET.
· The TELETEXT SYSTEM has a built-in FLOF system. (Only for AV-16KG21)
· Built - in ON TIMER, RETURN + & CHILD LOCK.
2.2
MAIN DIFFERENCE LIST
Item
AV-16KG21
AV-16KG11
MAIN PWB ASS'Y
SCG-1473A-CK
SCG-1472A-CK
REMOTE CONTROL UNIT
RM-C91-1H
RM-C360GY-1H
TELETEXT
available
------


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AV-16KG21
AV-16KG11
(No.52123)1-5
2.3
FUNCTIONS
FRONT PANEL
REAR TERMINAL
MENU buttons
MENU
button
MENU - / + buttons
CHANNEL - / + buttons
VOLUME - / + buttons
REMOTE CONTROL sensor
ON TIMER lamp
POWER lamp
MAIN POWER button
AUDIO INPUT terminal
VIDEO INPUT terminal
HEADPHONE jack
1
2
3
4
5
6
7
8
9
10
JVC
MENU
CHANNEL
VOLUME
EXIT
ON TIMER POWER
VIDEO
IN
AUDIO
10
1
2
3
4
5
6
7
8
9
AERIAL terminal
VIDEO INPUT terminal
AUDIO INPUT terminal
AUDIO OUTPUT terminal
VIDEO OUTPUT terminal
1
2
3
4
5
AUDIO
IN
OUTPUT
VIDEO
2
3
4
5
1