SERVICE MANUAL
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
No.52168
2004/1
REAR PROJECTION TELEVISION
52168
2004
1
AV-65WP94/HA
TABLE OF CONTENTS
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-71
BASIC CHASSIS
SB3
1-2 (No.52168)
Design & specifications are subject to change without notice.
Items
Contents
Dimensions (W
× H × D)
156.6cm
× 149.5cm × 72.8cm (61-3/4" × 58-7/8" × 28-3/4")
Mass
116 kg ( 256 lbs )
Reception System
Analog
Digital
CCIR (M)
ATSC terrestrial
Color System (Analog)
NTSC
Sound System (Analog)
BTSC (Multi Channel Sound)
Receiving Channels
and Frequency
(Analog)
VHF Low
VHF High
UHF
CATV
02ch~06ch : 54MHz~88MHz
07ch~13ch : 174MHz~216MHz
14ch~69ch : 470MHz~806MHz
54MHz~804MHz
Low Band : 02~06, A-8 by 02~06&01
High Band : 07~13 by 07~13
Mid Band : A~I by 14~22
Super Band : J~W by 23~36
Hyper Band : W+1~W+28 by 37~64
Ultra Band : W+29~W+84 by 65~94, 100~125
Sub Mid Band : A4~A1 by 96~99
TV / CATV Total Channel
180 Channels
Intermediate Frequency
(Analog)
Video IF
Sound IF
45.75MHz
41.25MHz (4.5MHz)
Color Sub Carrier (Analog)
3.58MHz
Power Input
AC 120V, 60Hz
Power Consumption
320W (Max)
Screen
Transparent screen (unitized fresnel lens / double lenticular lens)
Screen Size
65" (165cm) Measured diagonally, 16:9 ratio (W:143.9 cm, H:81.0 cm)
Projection Tube
17cm (6.7") tube
× 3 ( R/G/B )
High Voltage
31kV±0.15kV (at zero beam current)
Speaker
16cm round
× 2 (Woofer), 5.5cm round × 2 (Tweeter)
Audio Power Output
10W+10W
Antenna Terminal (VHF/UHF, ATSC)
75
unbalanced, F-type connector × 2
External Input (1/2/3/4)
Video
Audio
S-Video
[INPUT-1/3/4]
Component Video
[INPUT-1/3]
1V (p-p), 75
(RCA pin jack × 4)
500mV(rms) (-4dBs), high impedance (RCA pin jack
× 8)
Mini-DIN 4pin connector
× 3
Y: 1V (p-p) positive, 75
negative sync provided
C: 0.286V(p-p) (burst signal)
Y: 1V (p-p), 75
(RCA pin jack × 2)
Pb: ±0.35V(p-p), 75
(RCA pin jack × 2)
Pr: ±0.35V(p-p), 75
(RCA pin jack × 2)
Digital Input
Video
Audio
DVI-D 24pin connector (Single link 19pin)
(Digital-input terminal is not compatible with computer signal)
500mV(rms) (-4dBs), high impedance (RCA pin jack
× 2)
Audio Output
VARI : More than 0 to 1000mV (rms) (+2.2dBs)
FIX : 500mV(rms) (-4dBs), low impedance (1kHz when modulated 100%)
(RCA pin jack
× 2)
ATSC Output
Video
Audio
S-Video
1V (p-p), 75
(RCA pin jack)
250mV(rms) (-10dBs), Fs-18dB low impedance (RCA pin jack
× 2)
Mini-DIN 4pin connector
× 1
Y: 1V (p-p), 75
C: 0.286V(p-p) (burst signal), 75
Digital audio optical output
Digital SPDIF
× 1
iLink Input/Output
TS In/Out (4-pin, S400)
× 1
IEEE1394 compliant DTCP digital copy protection compatible
Subwoofer Output
More than 0 to 1000mV (rms) (+2.2dBs) (RCA pin jack x1)
Speaker Input
60W 16
(maximum input)
AV Compulink lll
Ø3.5mm mini jack
× 1
Remote Control Unit
RM-C12G (AA/R6/UM-3 battery
× 2)
(No.52168)1-3
SECTION 1
PRECAUTION
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) Use isolation transformer when hot chassis.
The chassis and any sub-chassis contained in some products are
connected to one side of the AC power line. An isolation
transformer of adequate capacity should be inserted between the
product and the AC power supply point while performing any
service on some products when the HOT chassis is exposed.
(5) Don't short between the LIVE side ground and ISOLATED (NEU-
TRAL) side ground or EARTH side ground when repairing.
Some model's power circuit is partly different in the GND. The differ-
ence of the GND is shown by the LIVE : (
) side GND, the ISOLAT-
ED (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.
(6) If any repair has been made to the chassis, it is recommended that
the B1 setting should be checked or adjusted (See B1 POWER
SUPPLY check).
(7) 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.
(8) 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.
(9) 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.
(10) 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 1100V AC
(r.m.s.) for a period of one second.
(. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance rat-
ed 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.).
(11) High voltage hold down circuit check.
After repair of the high voltage hold down circuit, this circuit shall
be checked to operate correctly.See item "How to check the high
voltage hold down circuit".
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
PWB
White line side
WHT
PW
POWER CORD
REPLACEMENT WARNING.
Connecting the white line side of power
cord to "WHT" character side.
A
V
This mark shows a fast
operating fuse, the
letters indicated below
show the rating.
1-4 (No.52168)
1.2
INSTALLATION
1.2.1
REMOVING THE UPPER UNIT FROM THE LOWER UNIT
1.2.1.1
TYPES AND PLACES OF SCREWS
· Be careful not to confuse the following four types of screws.
Type
B
A
A
A
C
D
Ref.
Place for attaching screws
Quantity
Color
Shape
4
diameter of 4mm-length of 18mm, acute tip
diameter of 3mm-length of 12mm, flat tip
diameter of 4mm-length of 12mm, flat tip
diameter of 4mm-length of 20mm, flat tip
2
2
2
2
4
Black
Black
Gold
Black
Rear cover (for attaching the speaker panel)
FRONT SIDE
REAR SIDE
A : diameter of 4mm - length
of 18mm, black, acute tip
A : diameter of 4mm - length
of 18mm, black, acute tip
C : diameter of 4mm - length
of 12mm, gold, flat tip
D : diameter of 4mm - length
of 20mm, black, flat tip
B : diameter of 3mm - length
of 12mm, black, flat tip
Rear cover (for attaching the body bracket)
Inside the Front door (in the jack part)
Rear cover (for attaching the body)
Rear cover bracket
Front panel bracket
1
A : diameter of 4mm - length
of 18mm, black, acute tip
1
3
A : diameter of 4mm - length
of 18mm, black, acute tip
6
2
4
5
D : diameter of 4mm - length
of 20mm, black, flat tip
5
(No.52168)1-5
1.2.1.2
DISASSEMBLY PROCEDURE
· Make sure that the power cord is pulled out from the AC wall
socket.
(1) Remove the 2 screws [ A ] on the left rear side of the set,
and then remove the rear cover bracket. [Fig.1]
(2) Remove the 2 screws [ B ] inside of the front door. [Fig.2]
* The screws attach the speaker grill.
(3) Remove the 2 screws [ D ] on the left edge of the rear
cover, and remove the 2 screws [ D ] on the right edge of
the rear cover. [Fig.2]
* The screws attach the speaker grill.
(4) Pull the speaker grill in front direction, and remove the
speaker grill. [Fig.2]
(5) Remove the connector [CN00Z] for the auto-convergence
sensor on the left side of the set, and the clamp fixing the
wire. [Fig.2]
(6) Remove the 2 screws [ A ] on the left front panel bracket,
and remove the 2 screws [ A ] on the right front panel
bracket. [Fig.2]
(7) Remove 1 screw C on the left edge of the rear cover, and
1 screw C on the right edge of the rear cover. [Fig.3]
(8) Remove 1 screw [ A ] on the left side of the rear cover, and
remove 1 screw [ A ] on the right side of the rear cover.
[Fig.3]
(9) Move the rear cover approx. 3cm in rear direction. Then,
remove the upper unit from the lower unit by lifting the
upper unit slowly. [Fig.3]
·VOID seal [ a ] attached to the left front panel bracket in
order to confirm that a person except JVC installation
workers has disassembled the set. This seal is removed
when the upper unit is removed, and the letters of "VOID"
appears in the place where the seal. [Fig.2]
· Two or more people are required to move the upper unit.
· Reflecting mirror is attached to the upper unit. So, handle
it carefully so as to protect it from shocks.
· In placing the upper unit on the ground, be careful not to
insert the connector for the auto-convergence on the
right side of the upper unit between the upper unit and
the ground.
· In placing the upper unit on the ground, be careful not to
insert dust inside the upper unit.
· Be careful not to hurt yourself because metal brackets for
attaching the front panel are on the ceiling part of the
lower unit.
(10) Cover the lower unit with the Top Sheet in order not to
insert dust in the lower unit. Top Sheet is the one used for
package. [Fig.4]
Fig.1
Fig.2
Fig.3
Fig.4
A
A
D
D
B
a
SPEAKER GRILL
CN00Z
C
A
UPPER
UNIT
LOWER
UNIT
TOP SHEET