Page 1
52104200304
AV-32430
AV-32432
SERVICE MANUAL
COLOR TELEVISION
BASIC CHASSIS
AV-32430/M, AV-32432/M,
GE2
AV-32430
AV-32430
/R, AV-32432/R,
/Y, AV-32432/Y
TABLE OF CONTENTS
1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
No.52104
2003/04
Page 2
AV-32430
AV-32432
SPECIFICATION
Items Contents
Dimensions (W x H x D) 76.8cm x 66.7cm x 54.7cm (30-1/4” x 26-1/4” x 21-1/2”)
Mass 51.0kg (112.2 Ibs)
TV RF System CCIR (M)
Color Sound System NTSC, BTSC System (Multi Channel Sound)
TV Receiving Channels and Frequency
VHF LOW
VHF HIGH
TV/CATV Total Channel 180 Channels
Intermediate Frequency
Video IF Carrier
Sound IF Carrier
Color Sub Carrier 3.58MHz
Power Input AC 120V, 60Hz
Power Consumption 128W
Picture Tube 32” (80cm) Measured diagonally H:65.6cm x V:49.6cm
High Voltage 31kV±1.3kV (at zero beam current)
Speaker 8 x 12cm (3-1/4” x 4-3/4”) Oval type x 2
Audio Power Output 3W + 3W
Antenna Terminal (VHF/UHF) F-type connector, 75ohm
Video / Audio Input (1 / 2 / 3)
Video (1 / 3)
Audio (1 / 2 / 3)
S-Video (1)
Component video (2)
Audio Output (Fix) 500mV(rms), low impedance, (1kHz when modulated 100%) (RCA pin jack x 2)
AV Compulink lll 3.5mm mini jack x 1
Remote Control Unit RM-C203 (Lithium cell battery x 1)
02ch~06ch : 54MHz~88MHz
07ch~13ch : 174MHz~216MHz
UHF
14ch~69ch : 470MHz~806MHz
CATV
54MHz~804MHz
Low Band : 02~06, A-8 by 02~06&01
High Band : 07~13 by 07~13
Mid Band : A~1 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 65~125
Sub Mid Band : A8, A4~A1 by 01, 96~99
45.75MHz
41.25MHz (4.5MHz)
1V(p-p), 75ohm (RCA pin jack x 2)
500mV(rms) (-4dBs), high impedance (RCA pin jack x 8)
Mini DIN 4pin x 1
Y : 1V(p-p) positive (negative sync provided, when terminated with 75ohm)
C : 0.286V(p-p) (burst signal when terminated with 75ohm)
RCA pin jack x 3
Y : 1V(p-p) positive (negative sync provided, when terminated with 75ohm)
Pb/Pr : 0.7V(p-p) 75ohm
Design & specifications are subject to change without notice.
1-2 (No.52104)
Page 3
SECTION 1
PRECAUTIONS
AV-32430
AV-32432
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. Replacem ent 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 pr oducts 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 that 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 schematic s 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 pa rts list of Service manual ma y cause
shock, fire, or other hazards.
(4) Use isolation transformer when hot chassis.
The chassis and any sub-chassis contained in some products ar e
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
(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 I SOLATED (NEUTRAL )
side GND or EARTH side GND and never measure with a measuring
apparatus (oscilloscope etc.) the LIVE side GND and
ISOLATED(NEUTRAL) side GND or EARTH side GND at the same
time.
If above note will not be kept, a fuse or any parts will be broken.
(6) The high voltage applied to the picture tube m ust 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 con ditions 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 manufact urer of the
complete product.
(7) If any repair has been made to the ch assis, it is recomme nded that
the B1 setting should be checked or adjusted (See ADJUSTMENT
OF B1 POWER SUPPLY).
(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
10kΩ 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 hig h
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, screwheads, earphone jack,
control shafts, etc.) to be sure the pro duct is saf e to operat e with out
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
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 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 A C ou tle t ( do not use
a line isolation transformer during this check.). Use an AC
voltmeter having 1000 ohms per volt or more sensitivity in
the following manner. Connect a 1500ohm 10W resistor
paralleled by a 0.15µF 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 exce ed 0.3V AC
(r.m.s.). This corresponds to 0 .2mA AC (r .m.s .).
AC VOLTMETER
(HAVING 1000 /V,
OR MORE SENSITIVITY)
0.15 F AC-TYPE
PLACE THIS PROBE
(11) High voltage hold down circuit ch eck.
GOOD EARTH GROUND
1500 10W
ON EACH EXPOSED
METAL PART
After repair of the high voltage hold down circui t, this circuit shall b e
checked to operate correctly.
See item "How to check the high voltage hold down circuit".
This mark shows a fast
operating fuse, the
letters indicated below
show the rating.
A V
POWER CORD
REPLACEMENT WARNING.
Connecting the white line side of power
cord to "WHT" character side.
PWB
White line side
WHT
PW
(No.52104)1-3
Page 4
AV-32430
AV-32432
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES
TELETEXT (CLOSED CAPTION) Title TELETEXT broadcast of C1~C4 and T1~T4 formula is receivable.
DIGITAL COMB FILTER By the three-line digital comb filter, the refreshed image can be seen.
VIDEO STATUS Expression of a favorite screen can be chosen by the VIDEO STATUS function
(STANDARD / DYNAMIC / SPORTS / GAME).
V-CHIP Since the V chip is built in, it can choose, view and listen to a healthy program.
COMPONENT VIDEO INPUT TERMINAL Since the component signal input terminal is equipped, it reappears direct without
deteriorating the signal from DVD.
MTS STEREO SYSTEM The voice multiplex function of the MTS system is built in. (MTS = Multi channel TV
Sound system)
EZ SURF By the EZ SURF function, channel ID and a program name are displayed in the screen
automatically.
RETURN PLUS you program a specific channel to return to while scanning through the channels using
the CH+ and CH- buttons.
AV COMPULINK lll By the AV COMPULINK lll function, operation interlocked with the DVD deck can be
performed from remote control.
ON / OFF & SLEEP TIMER The on/off timer lets you progr am your television to turn itself on or off. You can use it as
an alarm to wake up, to help you remember important programs, or as a decoy when
you're not home.
HYPER SCAN A quick favorite program can be looked for by the HYPER SCAN function.
FRONT PANEL LOCK This allows you to lock the keys on the front of the TV, so that a child may not accidentally
change your viewing preferences.
NOISE MUTING This feature inserts a blank blue screen over channels which are not broadcasting or are
too weak to be received clearly.
2.2 MAIN DIFFERENCE LIST
• The difference between MA models, RA model, and YA models is in the PICTURE TUBE. As the result of the difference in PICTURE
TUBE, the MAIN PWB also differ.
• The difference between AV-32430 series models and AV-32432 series models are in the FRONT CABINET color.
PART NAME AV-32430/MA AV-32430/RA AV-32430/YA
FRONT CABINET (BLACK) CM12914-010-MA
MAIN P.W.B. ASSY SGE-1064A-M2 SGE-1066A-M2 SGE-1065A-M2
CRT SOCKET P.W.B. ASSY SGE-3061A-M2 SGE-3062A-M2
AV SELECT P.W.B. ASSY SGE-5062A-M2
PICTURE TUBE (ITC) M80JUA061X06 A80AEJ15X01 A80AKB50X04
PART NAME AV-32432/MA AV-32432/RA AV-32432/YA
FRONT CABINET (SILVER) CM12914-012-MA
MAIN P.W.B. ASSY SGE-1061A-M2 SGE-1063A-M2 SGE-1062A-M2
CRT SOCKET P.W.B. ASSY SGE-3061A-M2 SGE-3062A-M2
AV SELECT P.W.B. ASSY SGE-5061A-M2
PICTURE TUBE (ITC) M80JUA061X06 A80AEJ15X01 A80AKB50X04
1-4 (No.52104)
Page 5
2.3 HOW TO IDENTIFY MODELS
How to recognize from the appearance of the model concerned is written below.
Please distinguish from several contents printed on the rating label.
Indicated model name
AV-32430
AV-32432
2.4 FUNCTIONS
FRONT CONTROL PANEL
INPUT-3 (V, L, R)
REAR TERMINAL
INPUT-1
(S, V, L, R)
INPUT-2
(L, R)
AUDIO OUT
(L, R)
Indicated /M, /R or /Y model
MENU
CHANNEL -/+
VOLUME -/+
POWER SW
REMOCON
WINDOW
REMOTE CONTROL UNIT
VIDEO
STATUS
DISPLAY
MUTING
MENU
POWER
BUTTON
NUMBER
KEYS
GAME
SLEEP
C.C
EXIT
INPUT
INPUT-2
(Y, Pb, Pr)
ANTENNA
TERMINAL
VCR
CONTROL
KEYS
(No.52104)1-5
Page 6
AV-32430
AV-32432
2.5 DISASSEMBLY PROCEDURE
2.5.1 REMOVING THE REAR COVER
• Unplug the power plug.
(1) Remove the 11 screws [A], as shown in Fig.1.
(2) Remove the rear cover toward you.
NOTE:
When reinstalling the REAR COVER, carefully push it inward
after inserting the chassis into the rear cover groo ve .
2.5.2 REMOVING THE TERMINAL BOARD
• Remove the REAR COVER.
(1) Remove the 4 screws [E] as shown in Fig.2.
(2) When you pull out the TERMINAL BOARD, it can be
removed.
2.5.3 REMOVING THE MAIN PWB
• Remove the REAR COVER.
(1) Slightly raise the both sides of the CHASSIS BASE by
hand, and remove the 2 claws [B] (Fig.1 and Fig.2) under
the both sides of the chassis from the chassis rail.
(2) Draw the CHASSIS BASE backward along the chassis rail
[C] in the arrow direction [D] as shown in Fig.1 and Fig.2.
(If necessary, detach the wire clamp, connector's etc.)
NOTE:
When conducting a check with power supplied, be sure to
confirm that the CRT earth wire is connected to the CRT
SOCKET PWB and the MAIN PWB.
FRONT CABINET
2.5.4 REMOVING THE FRONT CONTROL PWB
• Remove the REAR COVER.
• Remove the MAIN PWB.
(1) Remove the 2 screws [F] attached the FRONT CONTROL
PWB with the front cabinet as shown in Fig.2.
(2) Then remove the FRONT CONTROL PWB.
2.5.5 REMOVING THE FRONT TERMINAL PWB
• Remove the REAR COVER.
• Remove the CHASSIS BASE.
(1) Remove the 2 screws [G], as shown in Fig.2.
(2) Then remove the FRONT AV IN PWB.
2.5.6 REMOVING THE SPEAKER
• Remove the REAR COVER.
• Remove the CHASSIS BASE.
(1) Remove the 2 screws [H], as shown in Fig.2.
(2) Follow the same steps when removing the other hand
speaker.
2.5.7 CHECKING THE MAIN PWB
(1) Pull out the CHASSIS BASE. (Refer to REMOVING THE
CHASSIS BASE).
(2) Erect the chassis vertically so that you can easily check
from the backside of the MAIN PWB.
2.5.8 CAUTION
(1) When erecting the chassis, be careful so that there will be
no contacting with other PWB.
(2) Before turning on power, make sure that the CRT earth
wire and other connectors are properly connected.
2.5.9 WIRE CLAMPING AND CABLE TYING
(1) Be sure to clamp the wire.
(2) Never remove the cable tie used for tying the wires
together. Should it be inadvertently removed, be sure to tie
MAIN PWB
the wires with a new cable tie.
C
B
Fig.1
1-6 (No.52104)
Page 7
AV-32430
AV-32432
FRONT CABINET
SPEAKER
CRT
CRT SOCKET PWB
SPEAKER
H
POWER CORD
FRONT TERMINAL
PWB
G
B
CLAW
F
FRONT
H
CONTROL
PWB
MAIN PWB
HVT
TERMINAL
BOARD
REAR COVER
CLAW
B
AV SELECTOR
PWB
A
CHASSIS BASE
D
E
Fig.2
(No.52104)1-7
Page 8
AV-32430
AV-32432
2.6 REMOVING THE CRT NOTE:
• Replacement of the CRT should be performed by 2 or more
persons.
• After removing the REAR COVER, CHASSIS etc.,
(1) Putting the CRT change table on soft cloth, the CRT
change table should also be covered with such soft clo th
(shown in Fig. 3).
(2) While keeping the surface of CRT down, mount the TV set
on the CRT change table balanced will as shown in Fig. 3.
(3) Remove 4 screws marked by arrows with a box type screw-
driver as shown in Fig. 4.
NOTE:
Since the cabinet will drop when screws have been removed, be sure to support the cabinet with hands.
(4) After 4 screws have been removed, put the cabinet slowly
on cloth (At this time, be carefully so as not to damage the
front
surface of the cabinet) shown in Fig. 5.
NOTE:
• The CRT should be assembled according to the opposite sequence of its dismounting steps.
• The CRT change table should preferably be smaller
that the CRT surface, and its height be about 35cm.
CRT CHANGE TABLE
CLOTH
CRT
CHANGE
TABLE
Fig.3
CRT
Fig.4
APPROX.
35cm
BOX
TYPE
SCREW
DRIVER
CABINET
Fig.5
COATING OF SILICON GREASE FOR ELECTRICAL INSULATION ON THE CRT ANODE CAP SECTION.
Subsequent to replacement of the CRT and HV transformer or
repair of the anode cap, etc. by dismounting them, be sure to
coat silicon grease for electrical insulation as shown in Fig.6.
Wipe around the anode button with clean and dry cloth. (Fig.6)
Coat silicon grease on the section around the anode button. At
this time, take care so that any silicon greases dose not sticks
to the anode button. (Fig.7)
Silicon grease product No. KS - 650N
CRT
Anode button
Approx.
20mm (Do not
coat grease on
this section
CRT
CRT
CHANGE T ABLE
Silicon grease
should be coated
by 5mm or more
from the outside
diameter of anode
cap.
1-8 (No.52104)
Silicon grease
coating
Fig.6
Anode button
(No sticking of
silicon grease)
Fig.7
Coating position
of silicon grease
Anode cap
Page 9
2.7 MEMORY IC REPLACEMENT
2.7.1 MEMORY IC
This TV use memory IC.
In the memory IC, there are memorized data for correctly operating the video and deflection circuits.
When replacing the memory IC, be sure to use IC written with the initial values of data.
2.7.2 PROCEDURE FOR REPLACING MEMORY IC
(1) Power off
Switch the power off and unplug the power plug.
(2) Replace IC
Be sure to use a memory IC written with the initial setting data.
(3) Power on
Connect the power plug and switch the power on.
(4) Setting of receive channels
Set the receive channels. For setting, refer to the OPERATING INSTRUCTIONS.
(6) User settings
Check the user setting items according to TABLE 2, and if these are different, set the correct value.
(7) SERVICE MENU setting
Verify what to set in the SERVICE MENU, and set whatever is necessary. Refer to the SERVICE ADJUSTMENT for setting.
AV-32430
AV-32432
SERVICE MENU
SERVICE MENU
1.V/C(S)
3.SOUND(A)
7.LOW LIGHT
9.VCO
11.I2C BUS
SELECT BY
OPERATE BY
2.DEF(D)
4.OTHERS(F)
8.HIGH LIGHT
EXIT BY
EXIT
(No.52104)1-9
Page 10
AV-32430
AV-32432
2.7.3 USER SETTING VALUES
Setting item Setting value Setting item Setting value
REMOTE CONTROL UNIT KEY
POWER OFF DISPLAY OFF
CHANNEL CH-02 VIDEO STATUS DYNAMIC
VOLUME 15 SLEEP TIMER 0
TV/VIDEO TV
SETTING OF MENU
PICTURE MODE INITIAL SETUP MODE
TINT Center LANGUAGE ENG
COLOR Center FRONT PANEL LOCK OFF
PICTURE +8 V2 COMPONENT-IN NO
BRIGHT Center AUTO SHUT OFF OFF
DETAIL +10 CLOSED CAPTION OFF
NOISE MUTING ON AUTO TUNER SETUP AIR
SOUND MODE CHANNEL SUMMARY Unnecessary to set
BASS Center V-CHIP OFF
TREBLE Center SET LOCK CODE (0000) Unnecessary to set
BALANCE Center XDS ID ON
MTS STEREO
CLOCK / TIMERS MODE
SET CLOCK MANUAL
TIME ZONE : PACIFIC
D.S.T. : OFF
ON / OFF TIMER OFF
TABLE 2
1-10 (No.52104)
Page 11
2.8 REPLACEMENT OF CHIP COMPONENT
2.8.1 CAUTIONS
(1) Avoid heating for more than 3 seconds.
(2) Do not rub the electrodes and the resist parts of the pattern.
(3) When removing a chip part, melt the solder adequately.
(4) Do not reuse a chip part after removing it.
2.8.2 SOLDERING IRON
(1) Use a high insulation soldering iron with a thin pointed end of it.
(2) A 30w soldering iron is recommended for easily removing parts.
2.8.3 REPLACEMENT STEPS
1. How to remove Chip parts
[Resistors, capacitors, etc.]
(1) As shown in the figure, push the part with twe ezers and
alternately melt the solder at each end.
AV-32430
AV-32432
2. How to install Chip parts
[Resistors, capacitors, etc.]
(1) Apply solder to the pattern as indicated in the figure.
(2) Shift with the tweezers and remove the chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply extra solder to each lead.
SOLDER
SOLDER
(2) As shown in the figure, push the part with twe ezers and
alternately melt the solder at each lead. Shift and remove
the chip part.
(2) Grasp the chip part with tweezers and place it on the
solder. Then heat and melt the solder at both ends of the
chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the
solder.
(3) First solder lead A as indicated in the figure.
A
B
C
(4) Then solder leads B and C.
Note :
After removing the part, remove remaining solder from the
pattern.
A
B
C
(No.52104)1-11
Page 12
AV-32430
AV-32432
SECTION 3
ADJUSTMENT
3.1 ADJUSTMENT PREPARATION
(1) There are 2 ways of adjusting this TV : One is with the REMOTE CONTROL UNIT and the other i s the conventional method
using adjustment parts and components.
(2) The adjustment using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values which
adjust the screen to the optimum condition can be different from the initial setting values.
(3) Make sure that connection is correctly made AC to AC power source.
(4) Turn on the power of the TV and measuring instruments for warming up for at least 30 minutes before starting adjustments.
(5) If the receive or input signal is not specified, use the most appropriate signal for adjustment.
(6) Never touch the parts (such as variable resistors, transformers and condensers) not shown in the adjustment items of this service
adjustment.
(7) Preparation for adjustment. Unless otherwise specified in the adjustment items, preset the following functions with the REMOTE
CONTROL UNIT.
Item Preset value
VIDEO STATUS DYNAMIC
TINT, COLOR, PICTURE, BRIGHT, DETAIL Center
NOISE MUTING OFF
BASS, TREBLE, BALANCE Center
MTS STEREO
3.2 MEASURING INSTRUMENT AND FIXTURES
(1) DC voltmeter (or digital voltmeter)
(2) Oscilloscope
(3) Frequency counter
(4) Signal generator (Pattern generator) [NTSC]
(5) TV audio multiplex signal generator
(6) Remote control unit
1-12 (No.52104)
Page 13
3.3 ADJUSTMENT LOCATIONS
HVT
3.1 5A
V C ENTE R S W
VCO
CRT SOCKET PWB
(SOLDER SIDE)
AV-32430
AV-32432
TOP
TP-R
CN3004
TP-G
TP-E( )
FRONT CONTROL PWB
IC7701
CN7007
TP-B
CN30E2
POWER MENUVOL CH
CN3005
CRT EARTH
(BRAIDED ASS'Y)
FRONT
FRONT
FRONT AV IN PWB
F
FRONT
MAIN PWB
SS
AV SELECTOR PWB
CN001
CN003
T
T111
CN007
MEMORY IC
IC101
VCO
IC702
IC201
CN004
TUNER
PW
V CENTER SW
U
F901
3.15A
S421
DEG.
1:TP-91(B1)
2:NC
3:TP-E( )
HV
E1
CRT EARTH
(BRAIDED ASS'Y)
1
3
B1
HVT
UPPER : FOCUS
LOWER : SCREEN
(No.52104)1-13
Page 14
AV-32430
AV-32432
3.4 BASIC OPERATION OF SERVICE MENU
3.4.1 TOOL OF SERVICE MENU OPERATION
Operate the SERVICE MENU with the REMOTE CONTROL UNIT.
3.4.2 SERVICE MENU ITEMS
With the SERVICE MENU, various adjustments can be made, and they are broadly classified in the following items of settings.
(1) V/C (S) This mode adjusts the VIDEO and CHROMA control circuit.
(2) DEF (D) This mode adjusts the DEFLECTION control circuit.
(3) SOUND (A) This mode adjusts the SOUND control circuit.
(4) OTHERS (F) This mode adjusts the display setting and the other settings (Do not change the values).
(7) LOW LIGHT This mode adjusts the WHITE BALANCE (LOW LIGHT) control circuit.
(8) HIGH LIGHT This mode adjusts the WHITE BALANCE (HIGH LIGHT) control circuit.
(9) VCO This mode adjusts the VCO control circuit.
2
(11) I2C BUS This mode adjusts the I
C BUS control circuit (They are fixed).
3.4.3 BASIC OPERATION IN SERVICE MENU
3.4.3.1 HOW TO ENTER THE SERVICE MENU
Press the [SLEEP TIMER] key and set the SLEEP TIMER for "0
MIN".
SERVICE MENU
Then press the [DISPLAY] key and [VIDEO STATUS] key of the
remote control unit at the same time to enter the SERVICE
MENU screen.
SERVICE MENU
1.V/C(S)
3.SOUND(A)
2.DEF(D)
4.OTHERS(F)
7.LOW LIGHT
8.HIGH LIGHT
9.VCO
11.I2C BUS
3.4.3.2 SUB MENU SCREEN SELECTION
Press [VOLUME (-/+)] keys of the REMOTE CONTROL UNIT,
and select the SUB MENU SCREEN from SERVICE MENU.
In SERVICE MENU, press the [CHANNEL (-/+)] key to select any
of the SUB MENU items. The letters of the selected items are
displayed in yellow.
1.V/C(S) 2.DEF(D)
3.SOUND(A) 4.OTHERS(F)
7.LOW LIGHT 8.HIGH LIGHT
9.VCO
11.I2C BUS
SELECT BY
OPERATE BY
VIDEO
STATUS
DISPLAY
VOLUME
- / +
EXIT BY
EXIT
SLEEP
TIMER
CHANNEL
+ / -
EXIT
1-14 (No.52104)
Page 15
3.4.3.3 SETTING METHOD
[1.V/C(S), 2.DEF(D) AND 3.SOUND(A) ADJUSTMENT MODE]
1) Press the [CHANNEL (-/+)] keys to select the one of setting item from S01 BRIGHT to S21 AGC ADJ.
2) Press the [VOLUME (-/+)] keys to change the setting value. The setting value will be stored automatically when release
the REMOTE CONTROL UNIT keys.
It can adjust the items 2.DEF(D) and 3.SOUND(A) in the same procedure.
[7.LOW LIGHT, 8.HIGH LIGHT AND 9.VCO ADJUSTMENT MODE]
Since the key operation in this mode is peculiar, please refer to the clause of the "ADJUSTMENT PROCEDURE".
[4.OTHERS AND 11.I2C BUS ADJUSTMENT MODE]
These are no requirement for adjustment. Don't change these values.
3.4.3.4 Release of SERVICE MENU
When adjustment is completed, press the [EXIT] key twice. Then return to the normal screen.
AV-32430
AV-32432
(No.52104)1-15
Page 16
AV-32430
AV-32432
3.4.4 SERVICE MENU FLOW CHART
SERVICE MENU (MAIN MENU)
SERVICE MENU
1.V/C(S) 2.DEF(D)
3.SOUND(A) 4.OTHERS
7.LOW LIGHT 8.HIGH LIGHT
9.VCO
2
11.I
C BUS
1.V/C(S)
RF 4 : 3 STD LOW
SELECT BY
OPERATE BY EXIT BY
EXIT
S01 BRIGHT
2.DEF(D)
RF 4 : 3 STD LOW
D01 V FREQ
3.SOUND(A)
A01 IN LEVEL
4.OTHERS(F)
1-16 (No.52104)
[Do not adjust]
9. VCO MAIN
TUNER MAIN
HIGH LEVE L
REFERENCE LEVEL
LOW LEVEL
SYNC NO
11.I2C BUS
I2
C BUS ON
F01 OSD POSI
7.LOW LIGHT
BRIGHT
8.HIGH LIGHT
Page 17
3.5 INITIAL SETTING VALUE OF SERVICE MENU
(1) Adjustment of the SERVICE MENU is made on the basis of the initial setting values. However, the new setting values which
displays on the screen in its optimum condition may differ from the initial setting value.
(2) Do not change the initial setting values of the items not listed in "ADJUSTMENT PROCEDURE".
(3) "---" is impossible to adjust.
3.5.1 [1.V / C]
Initial setting value
No. Setting item Variable range
STANDARD THEATER STANDARD THEATER STANDARD THEATER
S01 BRIGHT 0~127 64 --- --- --- --- --S02 PICTURE 0~127 55 --- --- --- --- --S03 COLOR 0~127 50 --- --- --- 55 --S04 TINT 0~127 60 --- --- --- 78 --S05 DETAIL 0~63 37 --- 35 --- 40 --S06 BRIGHT +- -128~+127 --- 1 -2 --- 0 --S07 PICT+- -128~+127 --- -10 0 --- 0 --S08 COLOR +- -128~+127 --- -3 -2 --- --- --S09 TINT+- -128~+127 --- -3 2 --- --- --S10 DETAIL+- -128~+127 --- 0 --- --- --- ---
RF EXTERNAL (SV,CV) COMPONENT
AV-32430
AV-32432
Initial setting value
No. Setting item Variable range
S11 R CUT OFF 0~255 30 --- --- --- --- --- --- --S12 G CUT OFF 0~255 30 --- --- --- --- --- --- --S13 B CUT OFF 0~255 30 --- --- --- --- --- --- --S14 R DRIVE 0~127 64 --- --- --- --- --- --- --S15 B DRIVE 0~127 64 --- --- --- --- --- --- --S16 R CUT+- -128~+127 --- 0 0 0 -10 --- --- --S17 G CUT+- -128~+127 --- 0 0 0 0 --- --- --S18 B CUT+- -128~+127 --- 0 0 0 -10 --- --- --S19 R DRV+- -128~+127 --- 0 7 7 0 --- --- --S20 B DRV+- -128~+127 --- 0 -9 -9 0 --- --- ---
No. Setting item Variable range Initial setting value
S21 AGC ADJUST 0~127 80
STANDARD THEATER STANDARD THEATER
LOW HIGH LOW HIGH LOW HIGH LOW HIGH
RF/EXT (SV,CV) COMPONENT
(No.52104)1-17
Page 18
AV-32430
AV-32432
3.5.2 [2.DEF]
Initial setting value
AV-32430 /M
No. Setting item Variable range
D01AFC GAIN0~3020202
D02 H POSI 0~31 20 20 20 20 20 20
D03 V SIZE 0~125 63 63 70 70 70 70
D04V S CORR0~15555555
D05V LIN 0~15121212121212
D06 H SIZE 0~63 17 17 26 26 27 27
D07WVMT TOP0~3000000
D08WVMT BTM0~3000000
D09EWCR TOP0~31121212121212
D10EWCR BTM0~3115151515 1515
D11EW PARA0~63303036363636
D12BLANK SW0~1000000
3.5.3 [3.SOUND]
No. Setting item Variable range Initial setting value
A01 IN LEVEL 0~63 36
A02 FH MON 0~1 0
A03 ST VCO 0~63 43
A04 PIL CAN 0~1 0
A05 FILTER 0~63 35
A06 LOW SEP 0~63 8
A07 HI SEP 0~63 26
A08 5FH MON 0~1 0
A09 SAP VCO 0~63 44
AV-32432 /M
RF
EXTERNAL
(SV, CV)
AV-32430 /Y
AV-32432 /Y
RF
EXTERNAL
(SV, CV)
AV-32430 /R
AV-32432 /R
RF
EXTERNAL
(SV, CV)
3.5.4 [4.OTHERS]
No. Setting item Variable range Initial setting value
F01 OSD POSI 0~255 40
F02 OSD PREQ 0~255 90
F03 CCD POSI 0~63 47
F04 CCD FREQ 0~255 93
F05 CCD CONT 0~63 7
F06 PUR CONT 0~255 2
F07 VNR CHK 0~255 3
F08 VCSN TM 0~255 5
F09 CCD PCHK 0~1 1
3.5.5 [7.LOW LIGHT]
No. Setting item Variable range Initial setting value
1 RED 0~255 30
2 GREEN 0~255 30
3 BLUE 0~255 30
3.5.6 [8.HIGH LIGHT]
No. Setting item Variable range Initial setting value
1 RED 0~255 64
2 BLUE 0~255 64
1-18 (No.52104)
Page 19
3.6 ADJUSTMENT PROCEDURE
3.6.1 CHECK ITEM
Item
B1 POWER
Measuring
instrument
DC voltmeter
SUPPLY
check
Signal
generator
3.6.2 IF VCO
Test point Adjustment part Description
B1 Connector
TP-91, TP-E
[MAIN PWB]
(1) Receive the black-and-white signal. (color off)
(2) Connect the DC voltmeter to TP-91 (B1 connector 1
pin) and TP-E (B1 connector 3 pin).
(3) Confirm that the voltage is DC134V
AV-32430
AV-32432
±2V.
Item
Measuring
instrument
IF VCO Remote
control unit
3.6.3 RF AGC
Item
Measuring
instrument
RF AGC Signal
generator
Remote
control unit
No.
S21
Setting item
AGC ADJ 0~127
Test point Adjustment part Description
[9.VCO]
CW transf. (T111)
[MAIN PWB]
TOO HIGH GOOD TOO LOW
SYNC: YES
AFC ON
FINE 0
Test point Adjustment part Description
[1.V/C(S)]
S21 : AGC ADJ
Variable
range
Initial setting
value
80
• It must not adjust without inputting the RF signal.
(1) Receive a broadcast.
(2) Select 9.VCO.
(3) Change the [AFC] to OFF and [FINE] to 0.
(4) Confirm that the color change from "TOO HIGH" to
"TOO LOW" by CW transf. on MAIN PWB, and
check the [SYNC] is YES.
(5) Adjust CW transf. until "GOOD" letters turns green.
And then confirm that the [SYNC] is YES again.
Adjustment can be done in this statement.
(6) It return the [AFC] to ON.
(7) Push the [EXIT] key to exit the [9.VCO] mode.
(1) Receive a black-and-white signal (colour off).
(2) Select 1.V/C.
(3) Select <S21>(AGC ADJ).
(4) Press the [MUTING] key and turn the picture color
off.
(5) With the [VOLUME (-)] key to get the noise in the
screen picture (zero side of setting value).
(6) Press the [VOLUME (+)] key several times and step
when noise disappears from the screen (at that time,
not to increase the value too much).
(7) Change to other channels and make sure that there
is no irregularity.
(8) Press the [MUTING] key and get color out.
3.6.4 FOCUS
Item
Measuring
instrument
FOCUS Signal
generator
Test point Adjustment part Description
FOCUS VR
[In HVT]
(1) Receive the crosshatch signal.
(2) While looking at the screen, adjust the FOCUS VR
to the vertical and horizontal lines will be clear and in
fine detail.
(3) Make sure that the picture is in focus even when the
screen gets darkened.
(No.52104)1-19
Page 20
AV-32430
AV-32432
3.6.5 DEFLECTION CIRCUIT
Item
V. SIZE &
V. CENTER
Signal
generator
Remote
control unit
Measuring
instrument
Test point Adjustment part Description
[2.DEF(D)]
D03 : V SIZE
(1) Receive the crosshatch signal.
(2) Select 2.DEF(D).
(3) Select the <D03>(V SIZE).
V. CENTER SW(S421)
[MAIN PWB]
(4) Adjust the <D03> so that the vertical screen size
becomes 92.0%.
(5) Adjust the V. CENTER SW to agree the vertical
center with display center.
H. SIZE /
H. CENTER /
SIDEPIN
Screen
size
Model Name D03 V SIZE Initial setting value
AV-32430 /M
AV-32432 /M
AV-32430 /Y
AV-32432 /Y
AV-32430 /R
AV-32432 /R
Signal
generator
Picture
size
(100%)
63
70
70
[2.DEF(D)]
D02 : H POSI
D06 : H SIZE
Remote
control unit
D16 : EW PARA
D09 : EWCR TOP
D10 : EWCR BTM
Straight Straight
(1) Receive the crosshatch signal.
(2) Select 2.DEF(D).
(3) Select <D02>(H POSI).
(4) Adjust <D02> so that left width and right width of the
crosshatch screen becomes equal.
(5) Adjust <D06>(H SIZE) so that screen horizontal
width becomes 92.0%.
(6) Adjust <D16>(EW PARA) so that vertical line
becomes straight at both top and bottom edge.
(7) When vertical lines of four corner does not turn into
straight, adjust with <D09>(EWCR TOP) and
<D10>(EWCR BTM) to correctly.
1-20 (No.52104)
SIDE PINCUSHION ADJUSTMENT
Screen size
Picture size 100%
HORIZONTAL SIZE ADJUSTMENT
Page 21
3.6.6 VIDEO CIRCUIT
Item
WHITE
BALANCE
Measuring
instrument
Signal
generator
(LOW LIGHT)
Remote
control unit
No.
S11
S12 G CUT OFF 0~255 30
S13 B CUT OFF 0~255 30
S01 BRIGHT 0~127 64
Setting item
R CUT OFF 0~255
H LINE ON
Test point Adjustment part Description
[7.LOW LIGHT]
(1) Receive the black-and-white signal (color off).
(2) Select 7.LOW LIGHT.
[1.V/C(S)]
S11 : R CUTOFF
S12 : G CUTOFF
S13 : B CUTOFF
S01 : BRIGHT
(3) Set the initial setting value of <S11>(R CUTOFF),
<S12>(G CUTOFF), <S13>(B CUTOFF) and
<S01>(BRIGHT).
(4) Display a single horizontal line by pressing the [1]
key.
(5) Turn the SCREEN VR all the way to the left.
SCREEN VR
[in HVT]
(6) Turn the SCREEN VR gradually to the right from the
left until either one of the red, blue or green color
appears faintly.
R CUTOFF
H LINE OFF
G CUTOFF
(7) Adjust the two colors which did not appear until the
single horizontal line that is displayed becomes
white using the [4] to [9] keys.
(8) Turn the SCREEN VR until the single horizontal line
is displayed faintly.
EXIT
B CUTOFF
B CUTOFF
(9) Press the [2] key to cancel the single horizontal line
mode.
(10) Adjust the <S01> level to become the black
component shines white slightly by [VOLUME (-/+)]
key.
(11) Confirm that whether the color ingredient of R,G,or B
G CUTOFF
R CUTOFF
is visible to the black component, which shines white
slightly.
(12) When the color ingredient can be seen, two colors
other than a visible color is adjusted, and it is made
Variable
range
Initial setting
value
30
to look white.
(13) Return the value of <S01> to initial setting value.
If [3] key is pressed, it can escape from WHITE BALANCE
adjustment mode.
AV-32430
AV-32432
WHITE
BALANCE
(HIGH LIGHT)
No.
S14
S15 G DRIVE 0~127 64
Signal
generator
Remote
control unit
R DRIVE
R DRIVE
Setting item
R DRIVE 0~127
Variable
range
[8.HIGH LIGHT]
S14 : R DRIVE
S15 : B DRIVE
EXIT
B DRIVE
B DRIVE
Initial setting
value
64
(1) Receive the black-and-white signal (color off).
(2) Select the 8.HIGH LIGHT.
(3) Set the initial setting value of <S14>(R DRIVE) and
<S15>(B DRIVE) with the [4], [6], [7] and [9] keys of
the remote control unit.
(4) Adjust the screen until it becomes white using the
[4], [6], [7] and [9] keys of the remote control unit.
If [3] key is pressed, it can escape from WHITE BALANCE
adjustment mode.
(No.52104)1-21
Page 22
AV-32430
AV-32432
Item
Measuring
instrument
SUB BRIGHT Remote
control unit
No.
S01
SUB
CONTRAST
No.
S02
Setting item
BRIGHT 0~127
Remote
control unit
Setting item
PICTURE 0~127
SUB COLOR Signal
generator
Remote
control unit
No.
Setting item
Test point Adjustment part Description
[1.V/C(S)]
S01 : BRIGHT
(1) Receive the broadcast.
(2) Select 1.V/C(S).
(3) Select <S01>(BRIGHT).
(4) Set the initial setting value of the <S01> with the
Variable
range
Initial setting
value
[VOLUME (-/+)] key.
(5) If the brightness is not the best with the initial setting
value, make fine adjustment of the <S01> until you
64
[1.V/C(S)]
S02 : PICTURE
get the optimum brightness.
(1) Receive the broadcast.
(2) Select 1.V/C(S).
(3) Select <S02>(PICTURE).
(4) Set the initial setting value of the <S02> with the
Variable
range
Initial setting
value
[VOLUME (-/+)] key.
(5) If the contrast is not the best with the initial setting
value, make fine adjustment of the <S02> until you
65
[1.V/C(S)]
S03 : COLOR
get the optimum contrast.
(1) Receive the broadcast.
(2) Select 1.V/C(S).
(3) Select <S03>(COLOR).
(4) Set the initial setting value of the <S03> with the
[VOLUME (-/+)] key.
If the color is not the best with the Initial setting value,
make fine adjustment of the <S03> until you get the
optimum color.
Variable
range
Initial setting
value
S03
COLOR 0~127
SUB TINT Signal
generator
Remote
control unit
No.
S04
Setting item
TINT 0~127
Variable
range
50
[1.V/C(S)]
S04 : TINT
Initial setting
value
60
(1) Receive the broadcast.
(2) Select 1.V/C(S).
(3) Select <S04>(TINT).
(4) Set the initial setting value of the <S04> with the
[VOLUME (-/+)] key.
If the tint is not the best with the Initial setting value, make
fine adjustment of the <S04> until you get the optimum
tint.
1-22 (No.52104)
Page 23
3.6.7 MTS CIRCUIT
Item
MTS INPUT
LEVEL
instrument
Remote
control unit
check
Measuring
Test point Adjustment part Description
[3.SOUND(A)]
A01 : IN LEVEL
(1) Select the <A01>(IN LEVEL).
(2) Verify that the <A01> is set at its initial setting value.
AV-32430
AV-32432
No.
A01
MTS
STEREO VCO
No.
A02
A03 ST VCO 0㨪63 043
MTS SAP
VCO
No.
Setting item
IN LEVEL 0~63
Frequency
counter
Variable
R OUT
[AUDIO OUT]
Signal
generator
Remote
control unit
Setting item
FH MON 0
Frequency
counter
Variable
R OUT
[AUDIO OUT]
Signal
generator
Remote
control unit
Setting item
Variable
range
range
㨪63
range
Initial setting
value
036
[3. SOUND(A)]
A02 : FH MON
A03 : ST VCO
Initial setting
value
0
[3. SOUND(A)]
A08 : 5FH MON
A09 : SAP VCO
Initial setting
value
(1) Receive the RF signal (no modulated sound signal)
from the antenna terminal.
(2) Select 3.SOUND(A).
(3) Select the <A02>(FH MON) and change the setting
value from 0 to 1.
(4) Connect the frequency counter to R OUT of the
AUDIO OUT.
(5) Select the <A03>(ST VCO).
(6) Set the initial setting value of the <A03>.
(7) Adjust the <A03> so that the frequency counter will
display 15.73kHz
±0.1kHz.
(8) Select the <A02> of the SOUND mode, and reset the
setting value from 1 to 0.
(1) Receive the RF signal (non modulated sound signal)
from the antenna terminal.
(2) Select 3.SOUND(A).
(3) Select the <A08> (SFH MON) and reset the setting
value from 0 to 1.
(4) Connect the frequency counter to R out of the
AUDIO OUT.
(5) Select the <A09> (SAP VCO).
(6) Set the initial setting value of <A09>.
(7) Adjust the <A09> so that the frequency counter will
display 78.67kHz
±0.5kHz.
(8) Select the <A08>, and reset the setting value from 1
to 0.
A08
A09 SAP VCO 0㨪63 044
5FH MON 0㨪1
MTS FILTER Remote
control unit
No.
A04
A05 FILTER 0㨪63 035
Setting item
PIL CAN 0㨪1
Variable
range
0
[3. SOUND(A)]
A04 : PILOT CAN
A05 : FILTER
Initial setting
value
0
(1) Select 3.SOUND(A).
(2) Select the <A05> (FILTER).
(3) Select the <A04> (PILOT CAN) and reset the setting
value from 0 to 1.
(4) Verify that the <A05> is set at its initial setting value.
(No.52104)1-23
Page 24
AV-32430
AV-32432
Item
MTS
SEPARATION
1 cycle
No.
Measuring
instrument
TV audio
multiplex
signal
generator
Oscilloscope
Remote
control unit
L-Channel
signal waveform
Setting item
Test point Adjustment part Description
R OUT
L OUT
[AUDIO OUT]
[3.SOUND(A)]
A06 : LOW SEP
A07 : HI SEP
(1) Input the stereo L signal (300Hz) from the TV audio
multiplex signal generator to the antenna terminal.
(2) Connect an oscilloscope to R OUT pin of the AUDIO
OUT, and display one cycle portion of the 300Hz
signal.
(3) Select 3.SOUND(A).
(4) Select the <A06> (LOW SEP).
(5) Set the initial setting value of the <A06> with the
[VOLUME (-/+)] key.
(6) Adjust the <A06> so that the stroke element of the
300Hz signal will become minimum.
(7) Change the connection of the oscilloscope to L OUT
pin of the AUDIO OUT, and enlarge the voltage axis.
R-Channel
crosstalk portion
Minimum
Variable
range
Initial setting
value
(8) Change the signal to 3kHz, and similarly adjust the
<A07> (HI SEP).
A06
A07 HI SEP 0~63 026
LOW SEP 0~63
008
1-24 (No.52104)
Page 25
3.6.8 HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT
3.6.8.1 HIGH VOLTAGE HOLD DOWN CIRCUIT
After repairing the high voltage hold down circuit.
This circuit shall be checked to operate correctly.
3.6.8.2 CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT
(1) Turn the power switch to on.
(2) Refer to the following figure, set the resistor between X connector 1 and 3 .
(3) Make sure that the screen picture disappears.
(4) Temporarily unplug the power plug.
(5) Remove the resistor replaced X connector 1 and 3 .
(6) Again plug the power plug, make sure that the normal picture is displayed on the screen.
RESISTOR
22.8 k 0.5% 1/4W
AV-32430
AV-32432
Fig.3-5-9
CONNECTOR
S13 2 1
(No.52104)1-25
Page 26
AV-32430
AV-32432
JVC SERVICE & ENGINEERING COMPANY OF AMERICA
DIVISION OF JVC AMERICAS CORP.
www.jvcservice.com(US Only)
JVC CANADA INC.
Head office : 21 Finchdene Square Scarborough, Ontario M1X 1A7 (416)293-1311
(No.52104)
Printed in Japan
200304WPC
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