REPLACEMENT OF THE CRT....................................................................................................................................... 9
SERVICE MODE .......................................................................................................................................................... 10
SETTING & ADJUSTING DATA .................................................................................................................................... 20
LOCATION OF CONTROLS ......................................................................................................................................... 21
ADDING CHANNELS TO THE TV'S MEMORY ............................................................................................................ 23
CHASSIS REPLACEMENT PARTS LIST ..................................................................................................................... 26
PC BOARDS BOTTOM VIEW ...................................................................................................................................... 36
TERMINAL VIEW OF TRANSISTORS ......................................................................................................................... 50
SPECIFICATIONS .................................................................................................................................................... END
APPENDIX:
CIRCUIT DIAGRAM
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Page 3
CHAPTER 1 GENERAL ADJUSTMENTS
SAFETY INSTRUCTIONS
WARNING: BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAU-
TION” AND “PRODUCT SAFETY NOTICE” INSTRUCTIONS BELOW.
X-RAY RADIATION PRECAUTION
1. Excessive high voltage can produce potentially hazardous
X-RAY RADIATION. To avoid such hazards, the high voltage must not be above the specified limit. The nominal
value of the high voltage of this receiver is (A) kV at zero
beam current (minimum brightness) under a 120V AC
power source. The high voltage must not, under any circumstances, exceed (B) kV.
Refer to table-1 for high voltage (A), (B).
(See SETTING & ADJUSTING DATA on page 20)
Each time a receiver requires servicing, the high voltage
should be checked following the HIGH VOLTAGE CHECK
procedure in this manual. It is recommended that the reading of the high voltage be recorded as a part of the service
record. It is important to use an accurate and reliable high
voltage meter.
SAFETY PRECAUTION
WARNING : Service should not be attempted by anyone unfamiliar with the necessary precautions on this receiver. The following are the necessary precautions to be observed before
servicing this chassis.
1. An isolation Transformer should be connected in the power
line between the receiver and the AC line before any service is performed on the receiver.
2. Always discharge the picture tube anode to the CRT conductive coating before handling the picture tube. The picture tube is highly evacuated and if broken, glass fragments
will be violently expelled. Use shatter proof goggles and
keep picture tube away from the unprotected body while
handling.
3. When replacing a chassis in the cabinet, always be certain that all the protective devices are put back in place,
such as; non-metallic control knobs, insulating covers,
shields, isolation resistor-capacitor network etc.
4. Before returning the set to the customer, always perform
an AC leakage current check on the exposed metallic parts
of the cabinet, such as antennas, terminals, screwheads,
metal overlays, control shafts etc. to be sure the set is safe
to operate without danger of electrical shock. Plug the AC
line cord directly into a 120V AC outlet (do not use a line
isolation transformer during this check). Use an AC voltmeter having 5000 ohms per volt or more sensitivity in the
following manner:
PRODUCT SAFETY NOTICE
2. This receiver is equipped with a Fail Safe (FS) circuit which
prevents the receiver from producing an excessively high
voltage even if the B+ voltage increases abnormally. Each
time the receiver is serviced, the FS circuit must be checked
to determine that the circuit is properly functioning, following the FS CIRCUIT CHECK procedure in this manual.
3. The only source of X-RAY RADIATION in this TV receiver
is the picture tube. For continued X-RAY RADIATION protection, the replacement tube must be exactly the same
type tube as specified in the parts list.
4. Some part in this receiver have special safety-related characteristics for X-RAY RADIATION protection. For continued safety, parts replacement should be undertaken only
after referring to the PRODUCT SAFETY NOTICE below.
Connect a 1500 ohm 10 watt resistor, paralleled by a 0.15
µ
F, AC type capacitor, between a known good earth ground
(water pipe, conduit, etc.) and the exposed metallic parts,
one at a time. Measure the AC voltage across the combination of 1500 ohm resistor and 0.15 µF capacitor. Re-
verse the AC plug at the AC outlet and repeat AC voltage
measurements for each exposed metallic part. Voltage
measured must not exceed 0.675 volts rms. This corresponds to 0.45 milliamp. AC. Any value exceeding this limit
constitutes a potential shock hazard and must be corrected
immediately.
AC VOLTMETER
0.15 µF
Place this probe on
Good earth ground
such as a water
pipe, conduit, etc.
1500 ohm
10 watt
each exposed
metallic part.
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These characteristics are
often passed unnoticed by a visual inspection and the protection afforded by them cannot necessarily be obtained by using
replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual and its supplements; electrical components having such features are identified by the
international hazard symbols on the schematic diagram and the parts list.
Before replacing any of these components, read the parts list in this manual carefully. The use of substitute replacement
parts which do not have the same safety characteristics as specified in the parts list may create shock, fire, X-ray radiation or other hazards.
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3
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Page 4
CRT ASSEMBLY REPLACEMENT AND MOUNTING
CAUTION : DO NOT LOOSEN THE HEX HEAD BOLTS WITH SPRINGS (12 PCS), BECAUSE THOSE ARE FOR
SEALING OF CRT COOLANT.
Lens Assembly
R
GB
Attention Serviceman
The Hex Head
Bolts with
Springs. (see
sketch) used on
CRT assembly,
are NOT
Adjustment Screws
DO NOT LOOSEN-FLUID
LEAKAGE WILL OCCUR.
4 Screws
4 Screws
CRT Assembly
S.V.M. Coil
CRT DRIVE Board
Deflection Yoke and Conver Yoke
Lens and Neck Components View
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4
-
CRT Mounting
Page 5
TO REMOVE CRT (Same procedure for R, G, B)
1. Remove CRT DRIVE Board, S. V. M. COIL and
DEF. YOKE from CRT.
2. Remove Lens Assembly.
3. Detach CRT Anode Cap from CRT.
4. Remove CRT Assembly from CRT Mounting.
CRT REPLACEMENT (Same procedure for R, G, B)
Reverse the removal procedures except the followings.
1. Anode Cable should be replaced with new one.
See “SERVICING PRECAUTIONS” shown below.
2. Install silicon (T461B) to the CRT, replace the Anode
cable and put enough silicon again on around the Anode Cap as illustrated.
Anode Cap
CAUTION: Align the Anode cable as illustrated on page
4.
ADJUSTING PROCEDURE IN REPLACING CRT
1. R.G.B. FOCUS ADJUSTMENT (page 7.)
2. PICTURE TILT ADJUSTMENT (page 7.)
3. USER CONVERGENCE CENTER CHECK
(See owner's manual.)
4. CENTERING ADJUSTMENT (page 7.)
5. CONVERGENCE ADJUSTMENT (page 15.)
6. WHITE BALANCE ADJUSTMENT (page 12.)
Adjustments are complete.
Silicon
(On shaded area)
TSE3843W #23960136
2 ~ 5 mm
15 ~ 25 mm
SERVICING PRECAUTIONS
Do not use a magnetized screw driver for screws
of Deflection Yoke and Velocity Modulation Coil to
avoid magnetization of electron gun.
Magnetization of electron gun will degrade basic
function and result in unbalance of right and left
shift of user static convergence, and result in no
variable quantity.
Screw for
D.Y
Screw for SVM coil
When replacing the anode cap assembly (CRT) or
anode lead assembly (F.B.T.), remove the anode
lead holder from old one and attach the holder
again to new anode lead.
Check the point of anode lead in a straight
line, if it is winding, please revise it.
Anode lead holder
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Page 6
WARNING : BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAUTION” AND “PRODUCT SAFETY NOTICE” ON PAGE 3 OF THIS MANUAL.
PICTURE TUBE COMPONENTS ADJUSTMENT
DESCRIPTION OF NECK COMPONENTS
Deflection yoke and convergence yoke
The position on the neck is required most front
(CRT funnel side) and the screw is fastened after
rotating yoke adjusting picture tilt.
Centering magnet
After adjusting picture tilt, picture position is finally
fixed by this magnet.
In order to get maximum margin of user convergence control for center of screen, this magnet
have to be used for center convergence adjustment.
PREPARATION
Operate the receiver for at least 5 minutes.
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6
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Page 7
R, G, B FOCUS ADJUSTMENT
1. Before adjusting the R, G, B FOCUS, remove the 4 screws
of Lens Assembly which is fixed on the CRT Assembly.
(See page 4.)
Then turn around the Lens Assembly by 180 to adjust
the fastening screw (Fig. a) and fasten the 4 screws to
secure Lens Assembly.
2. Select the adjustment mode. (See page 10.)
3. Press “7” button to display the built-in cross-hatch.
4. Press “0” and “RTN” buttons to make the picture a single
Red color.
100 button ................ to erase Red color
0 button .................... to erase Green color
RTN button .............. to erase Blue color.
5. Loosen the fasten screw and adjust Red lens focus to best
focusing point of picture center. Then fasten the screw.
(See Fig. a.)
Fig. a
6. Adjust FOCUS VR “R” of FOCUS PACK to find best focusing point of picture center.
7. Repeat steps 3 to 5 for Green and Blue colors.
TILT ADJUSTMENT
Rotate R, G, B deflection yoke so that picture becomes horizon, then fasten screw.
CENTERING ADJUSTMENT
1. Stretch a thread between two center of screen edge (top
and bottom, left and right).
2. Receive NTSC.
Then select SERVICE MODE. (See Page 10.)
3. Select CONVERGENCE ADJUSTING mode, and press
"7" button to display the internal net pattern.
Move Cursol and recognize horizontal line indicated Y:4.
This line is vertical center. Push "9" button to display the
vertical stripes, and recognaize horizontal center.
4. Perform VCEN adjustment. (See page 16.)
5. Adjust G centering magnet so that the cross-bar pattern
center comes to screen center.
6. Perform HEIGHT adjustment .
7. Perform VERT. LINEARITY adjustment.
8. Perform WIDTH adjustment. (See page 16.)
9. Check whole quality of green line.
10
. Adjust R, B centering magnet so that the cross-bar pat-
tern center comes to screen center.
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7
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Page 8
LOCATION OF SCREEN AND FOCUS VR’S
R
G
B
SCREEN
COVER
Speaker grille
FOCUS
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8
-
Page 9
REPLACEMENT OF THE CRT
Service parts are provided for each R, G and B.
The contents of the parts are as follows.
RG B
46H84/57H84HOKUTO
51H84HITACHI2334122
REPLACEMENT OF HIGH VOLTAGE CABLE
ANODE LEAD
RUBBER BOOT
LEAD HOLDER
Z450 TPA5011
Fig. a
2334118
2334119
2334123
1. When replacing Anode Lead or Anode Cap with new one,
remove Lead Holder from old lead as shown in figure
below, and put it on new lead. Do not throw away Lead
Holder.
NOTE : THE LEAD HOLDER IS ATTACHED TO TPA5011
(Z450), BUT IS NOT ATTACHED TO ANODE
LEAD AND ANODE CAP. RUBBER BOOT IS ATTACHED TO ANODE LEAD AND ANODE CAP.
2. Detaching Lead Holder
RUBBER BOOT
LOCKLEAD HOLDER
Fig. b
2334120
2334124
OLD
ANODE LEAD
or
ANODE CAP
Cut here rubber boot
and lead together to
detach Lead Holder.
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Page 10
SERVICE MODE
1. ENTERING TO SERVICE MODE
1) Press MUTE button twice
on Remote Control.
MUTE
2. DISPLAYING THE ADJUSTMENT MENU
1) Press MENU button on TV.
Service mode
S
3. KEY FUNCTION IN THE SERVICE MODE
The following key entry during display of adjustment menu provides special functions.
2) Press MUTE button
again to keep pressing.
Adjustment mode
Press
Press
3) While pressing the MUTE button,
press MENU button on TV set.
S
(Service mode display)
Item
Data
Screen adjustment mode ON/OFF:TV (ANT)/VIDEO button (on TV)
Selection of the adjustment items :Channel / (on TV or Remote)
Change of the data value :Volume / (on TV or Remote)
Adjustment menu mode ON/OFF :MENU button (on TV)
Initialization of the memory (QA02) :RECALL+Channel button on TV ( )
Initialization of the self diagnostic data:RECALL+Channel button on TV ( )
1) Every pressing of CHANNEL button in the service mode changes the adjustment items in the order of table-2.
( button for reverse order)
Refer to table-2 for preset data of adjustment mode.
(See SETTING & ADJUSTING DATA on page 20)
5. ADJUSTING THE DATA
1) Pressing of VOLUME or button will change the value of data in the range from 00H to FFH. The variable range
depends on the adjusting item.
6. EXIT FROM SERVICE MODE
1) Pressing POWER button to turn off the TV once.
INITIALIZATION OF MEMORY DATA OF QA02
After replacing QA02, the following initialization is required.
1. Enter the service mode, then select any register item.
2. Press and hold the RECALL button on the Remote, then press the CHANNEL button on the TV. The initialization of QA02
has been complated.
3. Check the picture carefully. If necessary, adjust any adjustment item above.
Perform “Programming Channel Memory” on the owner's manual.
CAUTION: Never attempt to initialize the data unless QA02 has been replaced.
7. SELF DIAGNOSTIC FUNCTION
1) Press “9” button on Remote Control during display of adjustment menu in the service mode.
The diagnosis will begin to check if interface among IC’s are executed properly.
2) During diagnosis, the following displays are shown.
SELF CHECK
NO. 23 * * * * * *
POWER : 000
BUS LINE : OK
BUS CONT : OK
BLOCK : MAIN SUB
SET ID : 01
EEP VER : 02
OPT1 : 05 OPT2 : 70
HDMI
NO * * * * * * * *
ERR CODE :
Part number of microprocessor (QA01)
Operation number of protection circuit (current limiter) . . . . “000” is normal.
BUS line check“OK” ................... Normal
“SCL-GND” or “NG” ........... SCL-GND short circuit
“SDA-GND” or “NG” ........... SDA-GND short circuit
“SCL-SDA” or “NG” ............ SCL-SDA short circuit
BUS line ACK (acknowledge) check
“OK” ..................... Normal
Display of Location Number . . . . NG
(Display example)
“QA02 NG”, “H001 NG”, “Q501 NG” etc.
Note: The indication of failure place is only one place though failure places are plural. When
repair of a failure place finishes, the next failure place is indicated. (The order of priority of
indication is left side.)
Sync. signal checkGreen display ..... Normal
Red display ........ NG
MAIN ........ Main sync
SUB .......... Sub sync (when turn on the PIP)
ID code for TV Set
Version of "EEP"
Data for "OPT"
Part number of HDMI microprocessor
HDMI error code
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11
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Page 12
ADJUSTMENT
SPECIFICATION
ELECTRICAL ADJUSTMENT
10500k+0UV
Same spec is ap-
plied on dark area
and bright area.
1
+
-
5TH
BAR SUNK
SIGNAL
White luster signal
(Valuable input level)
CHANNEL 3
SUB-BRIGHT
SIGNAL
5th bar sunk
PROCESS INSTRUCTIONS
ADJUSTING
1. Heart run minimum 15minutes.
2. Go into screen adjustment mode.
ITEM
SCREEN ADJUST
Adjust Focus pack Screen VR of Red, Green, and Blue by looking directly into each
CRT and adjusting each screen VR until CRT is just lit on left side of CRT.
area.
BLUE DRIVE, RED BIAS and BLUE BIAS.
Adjust RED DRIVE, BLUE DRIVE for bright area, and adjust RED BIAS and BLUE
BIAS for dark area.
1. Adjust white luster level to get 4.3cd/m2 on dark area, and get 264.3cd/m2 on bright
2. Using the data up and down keys, cycle through the adjustments for RED DRIVE,
WHITE BARANCE
ADJUSTMENT
3. Continue to make adjustments color temperature to spec on each area.
1. Receive channel 3 Sub-Bright pattern.
2. Go into BRTC of service mode.
3. Press DATA UP/DOWN to adjust Sub-Bright level to spec.
SUB-BRIGHT
ADJUSTMENT
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12
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Page 13
G Dot cross (NTSC)
B Dot cross (NTSC)
Electrical Focus : R Dot cross (NTSC)
• User Adjustment : SPORTS (CONTRAST MAX, BRIGHTNESS CENTER)
• Adjust after Centering Magnet adjusts.
• Signal : Lens Focus: R Dot cross (NTSC)
ADJUSTMENT METHOD
(Condition)
G Dot cross (NTSC)
B Dot cross (NTSC)
1) Rough Adjust the lens focus and electrical focus of each color(R, G, B).
(Adjustment)
1. Common Items
Adjust Green electrical focus VR on focus pack (Z410) for best center focus.
1) Receive green single color by shielding jig.
2) Receive the Dot Cross pattern.
3) Adjust Green electrical focus.
2. Green Adjustment
Red flare width : 1mm
If the focus blur on screen center and circumference, adjust the electrical focus is best point on all of screen.
Receive the Dot Cross pattern. Adjust Green lens for best center focus.
Green lens focus adjustment target
Dot-cross has red flare (red flare width :1mm)
4) Adjust Green lens focus.
5) Repeat (3)~(4),and adjust best focus point.
ITEM
FOCUS ADJUSTMENT (1/2)
Focus Adjustment
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13
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Page 14
Adjust Red electrical focus VR on focus pack (Z410) for best center focus.
Receive the Dot Cross pattern. Adjust Red lens for best center focus.
1) Receive Red single color by shielding jig.
2) Receive the Dot Cross pattern.
3) Adjust Red electrical focus.
4) Adjust Red lens focus.
ADJUSTMENT METHOD
3. Red Adjustment
ITEM
FOCUS ADJUSTMENT (2/2)
Focus Adjustment
5) Repeat (3)~(4),and adjust best focus point.
1) Receive Blue single color by shielding jig.
2) Receive the Dot Cross pattern.
4. Blue Adjustment
3) Adjust Blue electrical focus.
Adjust Blue electrical focus VR on focus pack (Z410) for best center focus.
(The Brightness is minimum point of Blue.)
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14
Receive the Dot Cross pattern. Adjust the Blue lens for best center focus.
After easy lens adjustment, turn to right side lens focus screw,
and so dot-cross has flare.
Next turn left focus screw, so flare disappears in Dot-Cross and Dot-Cross become blur.
This point is blue lens focus adjustment target. (flare disappear and become blur)
4) Adjust Blue lens focus.
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Page 15
CONVERGENCE ADJUSTMENT
1. Receive NTSC signal.
2. Enter to the service mode. (See Page 10.)
RCUT
40H
3. Press "7" button to enter the convergence adjusting mode,
and the internal net pattern will be displayed. Then, press
"9" button to display veritcal stripes.
4. Select the point and the color by pressing following buttons. (Cursor should be blinking.)
"2", "8", "4", "6" : To select point
"3" : To select color
5. Then press "5" button, and adjust the convergence by
pressing following buttons. (Cursor should not be
blingking.)
"2", "8", "4", "6" : To adjust convergence
"3" : To select color
6. Repeat from steps 3 to 4 until the convergence and the
geometry become fine. (See Page 14.)
7. Press "7" button to memorize the adjusted data.
8. Message of "PLEASE PUSH TOUCH FOCUS" will be displayed, and press TOUCH FOCUS button which is located
on the front panel.
9. TOUCH FOCUS CALIBRATION will start.
10. Soon message of "CALIBRATION FINISHED" will be displayed, and then a normal picture will be displayed.
11. Then push TOUCH FOCUS button again, and confirm that
the convergence does not change.
EXPLANATION OF KEY-FUNCTION IN THE CONVERGENCE ADJUSTMENT MODE
Load BACK UP DATA:1 button
Up : button
Selet Green color:
Left : button
Blinking of cursor ON/OFF:5 button
Right:
Adjust mode ON/OFF:7 button
Down:8 button
Vertical stripe ON/OFF9 button
Erase Green line:0 button
Erase Red line:100 button
Erase Blue line:ENT button
Note: The following message will appear while pressing
"1" button.
ENTER:TO LOAD BACKUP DATA
MUTE:TO LOAD INITIAL DATA
EXIT:TO EXIT
BACKUP DATA sets in factory by performing
CALIBRATION. BACKUP DATA updates by performing CALIBRATION again. INITIAL DATA
uses the seed data on this model. Thus, it cannot
updates. INITIAL DATA is not adjusted. Therefore, convergence data operates incorrectly. Normally, BACKUP DATA operates as base data on
this model. If BACKUP DATA is incorrectly operated, INITIAL DATA is operated instead of BACKUP DATA.
2
3
button
4
6
button
Note: If message of "TOUCH FOCUS ERROR" is displayed,
1) Check the connection between four sensors and
Convergence Unit.
2) Check the geometry of internal net pattern. (See Page
14.)
If any problem cannnot be found, hardware might have
problem.
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15
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Page 16
DEFRECTION and CONVERGENCE
ITEM NAME SETTING
VCEN VERTICAL
Raster
centeing
Adjustment
CONTRAST :MAX
BRIGHTNESS:CNT
COLOR:CNT
TINT:CNT
INPUT
SIGNAL
Retma
Signal
TEST POIN
Between TP-G
to TP-V
MEASURING
INSTRUMENT
Dig
ital Volt
Meter
ADJUSTMENT METHOD ADJUSTMENT SPEC
+
0
Adjust the voltage between TP-G and TP-V.
10 mV
-
DY Tilt
Adjustment
Centering
magnet
Adjustment
WID Horizontal
Adjustment
(FULL)
HIT
(VLIN)
Vertical
Adjustment
(FULL)
Convergence
CONTRAST: MAX
BRIGHTNESS:CNT
COLOR :CNT
TINT:CNT
PIC SIZE:FULL
CONTRAST: MAX
BRIGHTNESS:CNT
COLOR :CNT
TINT:CNT
PIC SIZE:FULL
CONTRAST :MAX
BRIGHTNESS:CNT
COLOR:CNT
TINT:CNT
PIC SIZE: FULL
C-MUTE:ON
CONTRAST :MAX
BRIGHTNESS: CNT
COLOR:CNT
TINT:CNT
PIC SIZE: FULL
C-MUTE: ON
D-Cross
Pattern
Retma
Signal
Retma
Signal
Retma
Signal
Retma
Signal
Picture
Adjustment
Picture
Adjustment
Picture
Adjustment
Picture
Adjustment
Picture
Adjustment
Picture
Adjustment
Picture
Adjustment
Picture
Adjustment
Picture
Adjustment
Picture
Adjustment
After roughly the green centering magnet
alignment, adjust the green yoke so that
the D-cross is as close as possible to the
dummy screen cross. Adjust the Red and
Blue in the same manner as Green.
Adjust the green center to the screen
center with the centering magnet on Retma signal. And adjust the Red and Blue
center to the green center each.
Adjust the Horizontal width by WID on
the green raster only.
After finishing Convergence adjustment,
make sure that the width is the same as
the spec.
Adjust the Vertical height by HIT(VLIN)
on the green raster only.After finishing
Convergence adjustment, make sure that
the height is the same as the spec with
C-MUTE OFF.
Refer to the following (Convergence Net
Geometry)
The dummy screen cross
and D-cross Gap
Color gap at the screen
center is within
+
1 bar
11
-
In case of C-MUTE OFF is
+
-
+
-
3mm.
5mm.
the same spec as well.
In case of Convergence mute.
Upper left...5
Bottom right...5
In case of C-MUTE OFF.
Upper left...4
Bottom right...4
In many cases, color misconvergence may be corrected by returning HIT and WID data in main deflection side to initial adjusting
values. Following cases will surely require readjustment of convergence.
CRT REPLACEMENT
When CRT is replaced, main deflection readjustment and color matching are required.
Perform following procedures.
1. Replace two CRT’s of blue and red.
2. Perform horizontal adjustment for blue and red yokes on base of green CRT data. Mount yoke and velocity mod. coil alignment, pushing towards CRT without gap.
3. Adjust alignment of blue and red. (Refer Alignment adjustment for details.)
4. Rotating centering magnet, adjust CRT centers of red and blue to CRT center of green.
(Picture position adjustment)
5. Adjust HIT and WID data of main deflection, and decide data at the most precise screen comparing to green data.
6. Adjust convergence of screen picture for color matching. Do not move green one at this time.
7. After convergence adjustment of screen picture finishes, replace green CRT.
For green CRT as well, repeat steps 2 to 5 above on bases of red and blue color matching to adjust convergence.
8. Execute TOUCH FOCUS following instructions displayed on the screen after finishing convergence adjustments of all the
colors.
Note: Press button "7" again after "PLEASE PUSH TOUCH FOCUS" has been displayed. Then, TOUCH FOCUS will not be
executed, and the current state of convergence will be displayed.
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Page 18
SCREEN AND MIRROR ALIGNMENTS
ASSEMBLING OF FRONT SCREEN
K503 FRONT PANEL
LENTICULAR
K501
<OUTSIDE>
SMOOTH
K502
FRESNAL
BLACK STRIPES
SMOOTH
<INSIDE>
SPACER
FRONT PANEL
LENTICULAR
FRESNEL
INSIDE
OUT SIDE
LENS
BLACK STRIPES
0 to 1 mm
MOUNTING OF FRONT SCREEN
SMOOTH
FRESNEL
LENTICULAR
FRONT PANEL
BEZEL
CAUTION : Do not hold the optical system parts (lens and
mirror) with bare hand to avoid finger-prints on
the surface of those parts.
HOW TO CLEAN LENS AND MIRROR
1. Be sure to remove sand dust with an air brush, etc.
2. When it is stained slightly, breathe upon it and wipe away
with the specified cleaning cloth.
For other stains than the above, wipe the stains away with
the specified cloth into which a cleaning liquid has been
soaked.
The Fail Safe (FS) circuit check is indispensable for the final
check in servicing. Checking should be done following the
steps below.
1. Turn the receiver on.
2. Temporarily short TP- (R) and TP- (X) on the DEF/POWER
Board with a jumper wire.
Raster and sound will disappear.
3. The receiver must remain in this state even after removing
the jumper wire. This is the evidence that the FS circuit is
functioning properly.
4. To obtain a picture again, temporarily turn the receiver off
and allow the FS circuit more than 5 seconds to reset. Then
turn the receiver on to produce a normal picture.
ANODE VOLTAGE MEASURING METHOD
CAUTION: Take extra precaution when measuring this high
voltage. High voltages are also present in
surrounding circuit boards (CRT DRIVE assembly, DEFLECTION assembly, and POWER
SUPPLY assembly).
1. Disconnect the FBT anode cable as outlined below. Measure high voltage at the point where the cable enters the
FBT.
2. Holding the rubber cover firmly, turn it counterclockwise
and check that the lock has been disengaged. (See Fig. b
on page 9.)
3. Determine the extent of the rubber cover before disconnecting the cable.
4. Pull straight up the anode cable to disconnect.
5. When reconnecting the cable, proceed in the reverse order.
After reconnecting, tug on the cable to check that it is secure.
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Page 20
CHAPTER 2 SPECIFIC INFORMATIONS
SETTING & ADJUSTING DATA
SAFETY INSTRUCTIONS
HIGH VOLTAGE AT ZERO BEAM:
MAX HIGH VOLTAGE:
Table-1
SERVICE MODE
ADJUSTING ITEMS AND DATA IN THE SERVICE MODE:
(A)
(B)
46", 51", 57"
32.8 kV
33.9 kV
ItemName of adjustment
RCUT
BCUT
RDRV
BDRV
BRTC
HIT
LIN
VSC
WID
CIRCUIT CHECKS
R CUT OFF
B CUT OFF
R DRIVE
B DRIVE
BRIGHT CENTER
PICTURE HIT
V LINEARITY
V S CORRECTION
PICTURE WIDTH
PresetData
80H
80H
40H
40H
80H
30H
12H
29H
48H
HIGH VOLTAGE DET
ItemName of adjustmentPresetData
COLC
VCP
PARA
CNR
HCP
VFC
VCEN
TVOP
Table-2
Q306 # 8 pin-GND
Table-3
COLOR CENTER
V COMPENSATION
EW PARABOLA
EW M CORRECTION
H COMPENSATION
V f CORRECTION
V CENTERRING
TV OPTION
9.0 V
5DH
06H
0FH
10H
00H
00H
7AH
40H
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Page 21
LOCATION OF CONROLS (Representative:57H84)
Front
FRONT
Remote sensor
(Behind the screen)
Volume x•
Channel zy
CHANNEL
VOLUME
TV/VIDEO
EXITMENU
TouchFocus™
TouchFocus
S-VIDEO
L/MONO
R
VIDEO
AUDIO
REAR
Back
POWER
Power
indicator
VIDEO 1/2
ColorStream
HD1/HD2
MENU
EXIT
TV/VIDEO
ANT-2 IN
HDMI IN
Variable Audio OUT
Audio OUT
Video 3
Video/audio inputs
(behind the door)
ANT OUT
ANT-1 IN
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Page 22
Learning about the remote control
The buttons used for operating the TV only are described here.
POWER
turns the TV on and off
RECALL
SLEEP
TV/VIDEO
MUTE
Device Switch
CH (channel) yz
Channel Numbers
VOL (volume) yz
CH RTN
displays screen information
sets the TV to turn off at a specific time
selects video input source
mutes the sound
switches between TV, CBL/SAT/VCR, and DVD)
Set to “TV” to control the TV.
cycles through programmed channels
(0-9, 100) allow direct access to channel
adjusts the volume level
returns to the memorized channel
TV / VIDEO
RECALL
POWER
INFO
123
456
U
+10
FAV
MENU
DVDMENU
89
0
100
E
M
P
O
T
FAVORITE
7
N
CHRTN
ENT
G
PIC SIZE
U
I
D
E
MENU
allows access to on-screen programming menus
ENTER
activates the function settings in the menu
yzx•
select or adjust programming menus
POP CH yz
FAV yz
FAVORITE
PIC SIZE
selects the POP (picture-out-picture) channel
cycles through favorite channels
allows access to the favorite channel search function
cycles through the five picture sizes: Natural, Theater Wide
1, 2, 3, and Full
EXIT
exits programming menus
SPLIT
turns the POP feature on and off
SOURCE
FREEZE
SWAP
POP DIRECT CH
CH SCAN
LIGHT
selects the POP picture source
freezes the picture. Press again to restore the picture.
switches the main and POP pictures
allows direct access to POP channels
allows access to the programmed channel search function
illuminates the keypad for five seconds
ENTER
E
N
T
E
R
TV
CBL/SAT
VCR
DVD
TV/VCR PAUSE
CH SCAN
REC
FAV
POP DIRECT CH MUTESLEEP
FREEZE SOURCE
FFREW
SWAPPOP CH
VOLCH
STOP
SKIP /SEARCH
EXIT
C
PLAY
SPLIT
LIGHT
R
A
E
L
Note:
The error message “Not Available” will appear
if you press a key for a function that is not
available.
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Page 23
ADDING CHANNELS TO THE TV'S MEMORY
When you When you press Channel or , your TV will stop only on the channels stored in the TV's channel memory.
Follow the steps below and on the next page to program all active channels into the TV's memory.
Programming channels automatically
Your TV can automatically detect all active channels in your
area and store them in its memory. After the channels are
stored automatically, you can manually add or erase
individual channels. To program channels automatically:
Press MENU, and then press or until the SET UP
1
menu appears.
Press or until the TV/CABLE is highlighted, and then
2
press ENTER to display the pull-down menu.
Press or to highlight either TV or CABLE, depending
3
on which you use. If you use an antenna, highlight TV; if
you use cable, highlight CABLE.
Press ENTER.
4
Press to select CH PROGRAM.
5
Adding and erasing channels manually
After you have programmed the channels automatically, you
can manually add or erase specific channels.
To add or erase channels:
Select the channel you want to add or erase. If you are
1
adding a channel, you must select the channel using the
Channel Number buttons.
Press MENU, and then press or until the SET UP
2
menu appears.
Press or to highlight ADD/ERASE, and then press
3
ENTER to display the pull-down menu.
Press or to select ADD or ERASE, depending on the
4
function you want to perform.
Repeat steps 1-4 for other channels you want to add or
5
erase.
Press ENTER to start channel programming. The TV will
6
automatically cycle through all the TV or Cable channels
(depending on which you selected), and store all active
channels in the channel memory.
While the TV is cycling through the channels, the
message "Programming Now
When channel programming is complete,the message
7
"Completed" appears.
Press Channel or to view the programmed channels.
8
Note:
To tune the TV to a channel not programmed in the
channel memory, you must use the Channel Number
buttons on the remote control.
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Please Wait" appears.
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Page 24
MECHANICAL DISASSEMBLY
1 Speaker Grille Removal2 Control Panel Removal
A001
A201
A223
A202
A102
3 Front Mask Removal
K501
K502
K503
10 screws
4 screws
4 Shield Plate, Lens Removal5 Mirror Removal
4 screws
K111
K112
K113
4 screws
K601
6 Back Board Removal
A421
(A424)
A160 (CASTER)
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25
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Page 25
CHASSIS AND CABINET REPLACEMENT PARTS LIST
WARNING: BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAUTION”
AND “PRODUCT SAFETY NOTICE” ON PAGE 3 OF THIS MANUAL.
CAUTION: The international hazard symbols "" in the schematic diagram and the parts list designate com-ponents which
have special characteristics important for safety and should be replaced only with types identical to those in the original
circuit or specified in the parts list. The mounting position of replacements is to be identical with originals. Before replacing
any of these components, read carefully the PRODUCT SAFETY NOTICE. Do not degrade the safety of the receiver through
improper servicing.
NOTICE:
•
The part number must be used when ordering parts, in order to assist in processing, be sure to include the Model
number and Description.
•
The PC board assembly with ∗ mark is no longer available after the end of the production.
PC BOARD ASSY, BACK/AV 51H84 PU PD1735A1
PC BOARD ASSY, BACK/AV 46H84 PU PD1876A1
PC BOARD ASSY, FRONT-CON 51H84 PU PD1735A2
PC BOARD ASSY, FRONT-CON 46H84 PU PD1876A2
PC BOARD ASSY, FRONT-IN 51H84 PU PD1735A3
PC BOARD ASSY, FRONT-IN 46H84 PU PD1876A3
PC BOARD ASSY, REMOTE 51H84 PU PD1735A4
PC BOARD ASSY, REMOTE 46H84 PU PD1876A4
PC BOARD ASSY, CRT/SVM/R 51H84 PU PD1733A1
PC BOARD ASSY, CRT/SVM/G 51H84 PU PD1733A2
PC BOARD ASSY, CRT/SVM/B 51H84 PU PD1733A3
PC BOARD ASSY, SVM/DIV 51H84 PU PD1733A4
PC BOARD ASSY, CONV-SEN 51H84 PU PD0079B
PC BOARD ASSY, CONV-SEN2 51H84 PU PD0079B2
PC BOARD ASSY, CONV-SEN3 51H84 PU PD0079B3
PC BOARD ASSY, CONV-SEN4 51H84 PU PD0079B4
SCAN CONVERTER MODUL, MHSU11 MHSU11
PC BOARD ASSY, DEFPOWER 46H84 PU PD1730C
PC BOARD ASSY, DEFPOWER 51H84 PU PD1730A
PC BOARD ASSY, DEFPOWER 57H84 PU PD1730B
PC BOARD ASSY, IF/AUDIO 51H84 PU PD1731A2
PC BOARD ASSY, CONVER 51H84 PU PD1731A1
Location
No.
Parts No. Description
PICTURE TUBE
V901R #123078432 OTHER BLOCK, COUPLING R
#223078357 OTHER, COUPLING R
#323078433 OTHER BLOCK, COUPLING R
V902G #123078430 OTHER BLOCK, COUPLING G
#223078358 OTHER, COUPLING G
#323078430 OTHER BLOCK, COUPLING G
V903B #123078431 OTHER BLOCK, COUPLING B
#223078359 OTHER, COUPLING B
#323078434 OTHER BLOCK, COUPLING B
WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY
PRECAUTION" AND "PRODUCT SAFETY NOTICE" ON THE MANUAL FOR THIS MODEL.
CAUTION: The international hazard symbols "" in the schematic diagram and the parts list designate components
which have special characteristics important for safety and should be replaced only with types identical to those in the
original circuit or specified in the parts list. The mounting position of replacements is to be identical with originals.
Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE on the MANUAL for this
model. Do not degrade the safety of the receiver through improper servicing.
NOTE:
1. RESISTORResistance is shown in ohm [K = 1.000, M = 1.000.000]. All resistors are 1/6W and 5% tolerance
carbon resistor, unless otherwise noted as the following marks.
1/2R = Metal or Metal oxide of 1/2 watt1/2S = Carbon compsistion of 1/2 watt
1RF = Fuse resistor of 1 watt10W = Cement of 10 watt
±
10% G = ±2% F = ±1%
K =
2. CAPACITORUnless otherwise noted in schematic, all capacitor values less than 1 are expressed in
the values more than 1 in pF.
All capacitors are ceramic 50V, unless otherwise noted as the following marks.
Electolytic capacitor
Mylar capacitor
µ
F, and
3. The parts indicated with "
4. Voltages read with DIGITAL MULTI-METER from point indicated to chassing ground, using a color bar signal with
all controls at normal, line voltage at 220 volts.
5. Waveforms are taken receiving color bar signal with enough sensitivity.
6. Voltage reading shown are nominal values and may vary
" have special characteristics, and should be replaced with identical parts only.