Sharp 34N-WF5H User manual

1
34N-WF5H
COLOR TELEVISION
Chassis No. D00A
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its
original condition and only parts identical to those specified should be used.
S40Z134N-WF5H
SHARP CORPORATION This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
»ELECTRICAL SPECIFICATIONS.................................1
»IMPORTANT SERVICE SAFETY PRECAUTION ........2
»LOCATION OF USER'S CONTROL.............................4
»DIMENSIONS...............................................................6
»REMOVINGTHE MAJOR PARTS ................................7
»DRESSING THE LEADS............................................10
»INSTALLATION AND SERVICE INSTRUCTIONS......11
Page
CONTENTS
SERVICE MANUAL
34N-WF5H
MODEL
ELECTRICAL SPECIFICATIONS
VIDEO INPUT ............. (INPUT 1, 2, 3, 4) Composite
Input Jack :Pin-jack ×1
Input Level :1Vp-p/75 ohm/Negative Sync
S-VIDEO INPUT .......... (INPUT 1, 2, 3)Y/C
Y :1 Vp-p/75 ohm/Negative Sync
C :0.286Vp-p/75 ohm
COMPONENT INPUT... (INPUT 4, 5) Component (Y, PB, PR)
Input Jack :Pin-jack ×3 (INPUT 4),
BNC ×3 (INPUT 5)
Input Signal: 480I, 480P, 1080I
Y :1 Vp-p/75 ohm/Negative Sync
PB, PR:0.525 Vp-p/75 ohm
(75% Saturation Level)
HD INPUT ................... (INPUT 3) R, G, B, H.V/R, G, B
Input Jack :D-Sub 15pin ×1
Input Signal: 480P, 1080I
RGB :0.7 Vp-p/75 ohm/No Sync
AUDIO INPUT ............. (INPUT 1, 2, 3, 4, 5)
Input Jack :Pin-jack ×2
0.5 Vrms/22k ohm or over
LINE OUTPUT............. Input Jack :Pin-jack ×2
0.89 Vrms (Max)/2.2k ohm or
less/Veriable
POWER INPUT...................................................... 120V AC 60 Hz
POWER RATING ..................................................................205 W
PICTURE SIZE ..........................................3,160 cm2 (489 sq inch)
CONVERGENCE ............................................................. Magnetic
SWEEP DEFLECTION .................................................... Magnetic
FOCUS ................................................Hi-Bi-Potential Electrostatic
INTERMEDIATE FREQUENCIES
Picture IF Carrier Frequency ......................................45.75 MHz
Sound IF Carrier Frequency.......................................41.25 MHz
Color Sub-Carrier Frequency .....................................42.17 MHz
(Nominal)
AUDIO POWER
OUTPUT RATING ....24 W (12 W + 12 W)(at 10% distortion and
Dual CH Operate)
SPEAKER
SIZE ................................ 10 cm (BOX)(2 pcs.),Tweeter (2 pcs.)
VOICE COIL IMPEDANCE................................6 ohm at 400 Hz
ANTENNA INPUT IMPEDANCE
VHF/UHF.....................................................75 ohm Unbalanced
TUNING RANGES
VHF-Channels...............................................................2 thru 13
UHF-Channels ............................................................14 thru 69
CATV Channels ...........................................................1 thru 125
(EIA, Channel Plan U.S.A.)
Specifications are subject to change without
prior notice.
»ELECTRICAL ADJUSTMENT ....................................12
»CHASSIS LAYOUT.....................................................26
»BLOCK DIAGRAM .....................................................28
»SCHEMATIC DIAGRAMS ..........................................32
»PRINTED WIRING BOARD ASSEMBLIES................65
»REPLACEMENT PARTS LIST....................................76
»PACKING OF THE SET ............................................103
Page

2
34N-WF5H
IMPORTANT SERVICE SAFETY PRECAUTION
Service work should be performed only by qualified service technicians who are
thoroughly familiar with all safety checks and the servicing guidelines which follow:
CAUTION: FOR CONTINUED
PROTECTION AGAINST A
RISK OF FIRE, REPLACE
ONLY WITH SAME TYPE 5A-
125V FUSE.
X-RADIATION AND HIGHVOLTAGE LIMITS
1. Be sure all service personnel are aware of the
proceduresand instructionscoveringX-radiation.The
only potential source of X-ray in current solid state
TV receivers is the picture tube.However, the picture
tube does not emit measurable X-Ray radiation, if
the high voltage is as specified in the "High Voltage
Check" instructions.
It is only when high voltage is excessive that X-
radiation is capable of penetrating the shell of the
picture tube including the lead in the glass material.
The important precaution is to keep the high voltage
below the maximum level specified.
2. It is essential that servicemen have available at all
times an accurate high voltage meter.
The calibration of this meter should be checked
periodically.
3. Highvoltageshould always bekept atthe ratedvalue
−no higher. Operation at higher voltages may cause
a failure of the picture tube or high voltage circuitry
and;also, under certain conditions, may produce
radiation in exceeding of desirable levels.
4. Whenthe highvoltageregulator isoperatingproperly
thereis nopossibilityof anX-radiationproblem.Every
timea colorchassisis serviced, thebrightnessshould
be tested while monitoring the high voltage with a
meter to be certain that the high voltage does not
exceed the specified value and that it is regulating
correctly.
5. Do not use a picture tube other than that specified or
make unrecommended circuit modifications to the
high voltage circuitry.
6. Whentroubleshooting andtakingtest measurements
ona receiverwith excessivehighvoltage,avoidbeing
unnecessarily close to the receiver.
Do not operate the receiver longer than is necessary
to locate the cause of excessive voltage.
WARNING
1. For continued safety, no modification of any circuit
should be attempted.
2. Disconnect AC power before servicing.
3. Semiconductorheat sinksarepotentialshockhazards
when the chassis is operating.
4. The chassis in this receiver has two ground systems
which are separated by insulating material.The non-
isolated (hot) ground system is for the B+ voltage
regulator circuit and the horizontal output circuit.The
isolated ground system is for the low B+ DC voltages
and the secondary circuit of the high voltage
transformer.
To prevent electrical shock use an isolation
transformer between the line cord and power
receptacle, when servicing this chassis.
SERVICING OF HIGH VOLTAGE SYSTEM
AND PICTURE TUBE
When servicing the high voltage system,
remove the static charge by connecting a
10k ohm resistor in series with an insulated
wire (such as a test probe) between the pic-
ture tube ground and the anode lead. (AC
line cord should be disconnected from AC
outlet.)
1. Picture tube in this receiver employs integral
implosion protection.
2. Replace with tube of the same type number for
continued safety.
3. Do not lift picture tube by the neck.
4. Handle the picture tube only when wearing
shatterproof goggles and after discharging the high
voltage anode completely.
5A 125V

3
34N-WF5H
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212
1
234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121
2
1
234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121
2
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212
1
234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121
2
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212
IMPORTANT SERVICE SAFETY PRECAUTION
(Continued)
1. Inspect all lead dress to make certain that leads are
not pinched or that hardware is not lodged between
the chassis and other metal parts in the receiver.
2. Inspect all protective devices such as non-metallic
control knobs, insulating materials, cabinet backs,
adjustment and compartment covers or shields,
isolation resistor-capacity networks, mechanical
insulators and etc.
3. To be sure that no shock hazard exists, check for
leakage current in the following manner.
•Plug the AC cord directly into a 120 volt AC outlet,
(Do not use an isolation transformer for this test).
•Using two clip leads, connect a 1.5k ohm, 10 watt
resistorparalleled bya0.15µFcapacitorinseries with
all exposed metal cabinet parts and a known earth
ground,such aselectrical conduitorelectricalground
connected to earth ground.
•Use an AC voltmeter having with 5000 ohm per volt,
or higher, sensitivity to measure the AC voltage drop
across the resistor.
BEFORE RETURNING THE RECEIVER
(Fire & Shock Hazard)
Before returning the receiver to the user, perform
the following safety checks.
•Connect the resistor connection to all exposed metal
parts having a return to the chassis (antenna, metal
cabinet, screw heads, knobs and control shafts,
escutcheon and etc.) and measure the AC voltage
drop across the resistor.
AII checks must be repeated with the AC ine cord
plug connection reversed. (If necessary, a non-
polarized adapter plug must be used only for the
purpose of completing these check.)
Anycurrent measured mustnot exceed0.5 milliamp.
Any measurements not within the limits outlined
above indicate of a potential shock hazard and
corrective action must be taken before returning the
instrument to the customer.
For continued protection, replacement parts must be
identical to those used in the original circuit.The use of
substitutereplacement partswhichdo nothavethe same
safety characteristics as the factory recommended
replacement parts shown in this service manual, may
create shock, fire, X-radiation or other hazards.
1.5k ohm
10W
0.15µF
TEST PROBE
TO EXPOSED
METAL PARTS CONNECT TO
KNOWN EARTH
GROUND
AC
VOLTMETER
SAFETY NOTICE
Many electrical and mechanical parts in television
receivers have special safety-related characteristics.
These characteristics are often not evident from visual
inspection, nor can protection afforded by them be
necessarilyincreasedbyusingreplacementcomponents
rated for higher voltage, wattage and etc.
Replacement parts which have these special safety
characteristics are identified in this manual; electrical
components having such features are identified by "å"
and shaded areas in the Replacement Parts Lists and
Schematic Diagrams.

4
34N-WF5H
S-VIDEO VIDEO IN 2 L-AUDIO-R
INPUTCH – VOL + MENU DEGAUSS
Front control section
IN DOOR
DEGAUSS button
Press the DEGAUSS button to improve color unevenness of the screen
caused by moving the TV or changing the angle of the screen.
POWER
Press →
→
On.
Press again Off.
MENU button
Press MENU button to
access the MAIN MENU
screen
VOL(+)/(–) buttons
(+) Increases sound
(–) Decreases sound
SENSOR AREA
FOR REMOTE CONTROL
CH(up)/(down) buttons
( ) Selects next higher channel
( ) Selects next lower channel
INPUT button
Selects Input No. S-VIDEO input VIDEO input
(These terminals are also provided on the rear)
AUDIO L/R
input
POWER
(Stand-by: RED
ON: GREEN)
VIEW TIMER
(RED) HD TV (GREEN)
LED
LOCATION OF USER'S CONTROL

5
34N-WF5H
LOCATION OF USER'S CONTROL (Continued)
DTV
STB
POWER
TV
A
ENTER
MENU
VOL CH
AV MODE
MUTE
INPUT
ANT-A/B
DISPLAY
FLASHBACK ENT.
CC
PLAY FF
POP
REW
PAUSE
STOP REC
SEARCH
SELECT
DDFC
G1550CE
TWIN CH
VIEW
MODE TWIN PICTURE
VCR
POWER
MTS/SAP
L - TWIN ZOOM - R
SWAP FREEZE
BCD
CATV
HD-Ready TV
VCR CH
FAVORITES
VCR
INPUT
Press →Switches to external video
INPUT 1 mode.
Press again →Switches to external video
INPUT 2 mode.
Press 3 times →Switches to external video
INPUT 3 mode.
Press 4 times →Switches to external video
INPUT 4 mode.
Press 5 times →Switches to external video
INPUT 5 mode.
Press 6 times →Switches back to the
original TV mode.
POWER
Press →On.
Press again →Off. (Stand-by)
FAVORITES buttons
• Used to select any of four preset channels.
Cursor buttons
Used to move cursor on menu screen.
ENTER button
CHANNEL UP/DOWN
(+) Selects next higher channel.
(–) Selects next lower channel.
VOLUME UP/DOWN
(+) Increases sound.
(–) Decreases sound.
MENU
Press →Accesses MAIN MENU.
Press again →Exits MAIN MENU.
AV MODE
MUTE
Press →Mutes sound.
Press again →Restores sound.
• CLOSED CAPTION appears when sound is muted.
DIRECT ACCESS
Accesses any channel by the keypad.
button: Sharp DTV Decoder only
ENT.
Used in some instances where a VCR or
Cable Converter Box requires an “enter”
command after selecting channels, when
using the DIRECT ACCESS button.
DISPLAY
Press →Displays receiving channel for 4
seconds.
Press again →Displays remaining time of
SLEEP TIMER and VIEW
TIMER for 4 seconds.
FLASHBACK
Returns to previously viewed channel.
VIEW MODE
Select view size.
CC (Closed Caption)
Displays captions during
closed-caption broadcasts.
MTS/SAP
MTS/SAP select
VCR CONTROL
DDFC
Used to select High-quality image.
LIGHT
When this button is pressed , some buttons on the
remote control unit will light. The lighting will turn off if no
operations are performed within about six seconds. This
button is used for performing operations in dark places.
ANT-A/B button
Press to switch between ANTENNA-A and
ANTENNA-B when you wish to watch TV.
Remote control mode select buttons
Use to switch the remote control unit modes.
• This remote control can be used to operate the TV,
a DTV/STB Decoder and a Cable TV converter.
• By selecting one of the three mode select buttons,
this remote control can be used to adjust common
functions, such as channel selection, for that device.
INFRARED TRANSMITTER WINDOW
POP FUNCTION
With the VIDEO inputs, you can watch two pictures at
the same time.
"-TWIN CH-': Used to switch the channel for the
sub-picture of the TWIN PICTURE
screen.
TWIN PICTURE: Press to turn the TWIN PICTURE
screen function on and off.
SEARCH: Press to select the SEARCH
screen mode.
SELECT: Selects the screen for switching
the channel or input source.
FREEZE: When this button is pressed with
the regular screen, will change to the
TWIN PICTURE screen and the
picture at the time the button was
pressed will become the sub-picture,
displayed as a frozen image.
L-TWIN ZOOM: The left screen is enlarged with the
TWIN PICTURE function.
TWIN ZOOM-R: The right screen is enlarged with the
TWIN PICTURE function.
SWAP: The left and right screens are
interchanged with the TWIN
PICTURE function.
Note
For use of this remote control with an analog TV.
Note
•The above shaded buttons on the Remote Control glow in the dark. To use the glow-in-the-dark display on the
remote control, place it under a fluorescent light or other lighting.
•The phosphorescent material contains no radioactive or toxic material, so it is safe to use.
•The degree of illumination will vary depending on the strength of lighting used.
•The degree of illumination will decrease with time and depending on the temperature.
•The time needed to charge the phosphorescent display will vary depending on the surrounding lighting.

6
34N-WF5H
DIMENSIONS
[Units: mm (inches)]
Top View
FrontView Side View

7
34N-WF5H
REMOVING THE MAJOR PARTS
1. Remove the 13 lock screws off the rear cover.
2. Holding up the chassis frame, draw out the chassis about 5 cm (1.31/32 inch) first, disconnect the
speaker leads from the signal Unit, and pull out the chassis all the way.
`
`
`
`
Get the air vent tip cracked.
Degaussing Coil
Coil Holders
(4 locations)
Detaching the cathode ray tube
1. Detach the anti-magnetized coil from the four coil holders
that are at the cathode ray tube corners of the cabinet.
2. Remove the four pairs of screws and nuts off the cathode
raytube, anddetach thecathoderay tube.(The tubeweighs
about 60 kg (132.2lbs).)
Cathode ray tube handling precautions
Discharging
There may be a build-up of high-tension static electricity at
the high-voltage electrode (covered with the anode cap on
top of the cathode ray tube). Before taking the anode out of
the cathode ray tube, get it discharged.
Carrying
The cathode ray tube weighs 60 kg (132.2lbs) or so and its
shape is awkward to fit your hands. Preferably make a two-
person team to carry and move the tube.
Disposal
The cathode ray tube is under high vacuum inside. Before
disposing of it, get the air vent tip at the tube’s neck socket
crackedin ordertoturn thetubetotheatmospheric pressure
level.
~
Cabinet B
~~
~
~
~~~
~~
~
Cabinet A
Signal Unit Frame
AC Filter Unit Frame
Rear Panel
Power Unit Frame
Frame Holder
Note: Cabinet B mounting procedure and
precautions
1. Position the cabinet B in parallel with the
cabinet A.Start pushing in the cabinet B.
2. Insert the cabinet B until the clearance
between the cabinets A and B becomes 150
mm or so. Look into the terminal opening in
the back of the cabinet B to make sure the
tuner PWB and shield are out of contact with
the speaker guide boss.
3. Finally insert the coupling ribs of the cabinet
B in this order: left rib, top rib and right rib
when viewed from the back of the product.

8
34N-WF5H
Servicing precautions
1. Protector Operation
This model is provided with five protector circuits.Below discussed are the behaviors and indications of these circuits.
(Note: In some cases, the LED flashing cycle and possible trouble spot may be inconsistent.)
1Over-current Protector Circuit:
A rush current into the flyback transformer is detected.The circuit is activated if an over-current flows in.
Indication: The power LED (red) flashes once.
2X-Radiation Protector Circuit:
This circuit is activated if the rectified heater voltage rises above its specified level.
Indication: The power LED (red) flashes once.
OFF
ON
0.2
(seconds)
1.4
0.2
3Vertical Output Protector Circuit:
The vertical output is detected. The circuit is activated if the vertical output is missing (horizontal-only
screen or the like).
Indication: The power LED (red) flashes twice
ON
OFF
0.2 0.2
1.4
0.2
0.2 0.2 0.2
(seconds)
4+B Under-voltage Protector Circuit:
The voltages at the 6V, 10V, 16V, 28V and 30V lines of the switching regulator are detected.The circuit
is activated if any of the voltages drops below its specified level.
5+B Over-voltage Protector Circuit:
The voltages at the 6V and 10V lines are detected.The circuit is activated if any of the voltages rises
above its specified level.
Indication: The power LED (red) flashes three times.
(seconds)
0.2 0.2 0.2
1.4
0.2 0.2
0.2 0.2 0.2
0.2 0.2
OFF
ON
2. Stop of Protector Operation
The protector may be kept inactive by opening the detection circuits or grounding C3230 and C3231 (on the Signal
Unit).The vertical output protector circuit, however, cannot be made inactive.
Note: Be sure to get the protector back to normal after servicing.

9
34N-WF5H
3. Self-diagnostic Function (Protector Circuit Operation)
This model is equipped with five protector circuits.Shown below are the detections of the protector circuits and
possible trouble spots (outlined).
+130V line
FBT
+10V line
+16V line
136
IC501
T630
4
7
10
R620
to FBT
Q750 Q782 Q3255
Q3224
Q781
C3231
C3230
D732 D731
D633
D790
D789
D786
D782
D781
D787
D792
D783
D772
D560
D582
IC3501
(DUNTKA140DE) (DUNTKA096DE) (DUNTKA163DE)
85
84
95
17
80
Q3208
ACPOW
Q3204
RY3701
(DUNTKA116DE)
Micom UNIT
Horizontal
Protector
Power Protector
Micro-processor
Vertical Protector
Relay Drive
AC Relay
AC Filter UNIT
Signal UNIT
Drive
Drive
IC3210
Inverter IC
+14V line
-14V line
IC770 (Chopper Regulator)
+6V line
+30V line
(VT line)
+28V line
(Audio + B)
Drive Circuit
Power UNIT
Current AMP.
Detection Circuit
A: Detection
B: Possible Trouble Spot
1Over-Current Protector Circuit
A: +130V line current detected
(Flyback transformer rush current detected)
B: •Flyback transformer defective
•Horizontal deflection circuit transistor or diode
short-circuited
•Flyback transformer secondary-side rectifier circuit
parts short-circuited or load circuit parts short-circuited
2X-Radiation Protector Circuit
A: Flyback transformer terminal 0voltage detected
B: •Resonance capacitor open
•Horizontal circuit open
4Switching Power Secondary-side under-voltage
protector circuit
A: +10V, +16V, +28V, +30V and 6V line voltages detected
B: •+B line rectifier circuit parts (diode, capacitor)
short-circuited
•+B line load short-circuited
5Switching Power Over-voltage Protector Circuit
A: +10V and +6V line voltage rise detected
B: •Switching power primary-side circuit in trouble
(causing voltage rise)
•Chopper regulator malfunctioning
3Vertical Output Protector Circuit
A: Vertical output (pulse) monitored and no-pulse
condition detected
B: +14V line circuit in trouble, causing voltage
drop (rectifier circuit parts short-circuited)
or circuit open.

10
34N-WF5H
DRESSING THE LEADS
Earth
GS SH
GS SH
Tightening torque:
1.17 ±0.19 N-m
(12 ±2 kg-cm)
Connect M.
Bundle M and EW.
Insert GS.
Connect K.
Bundle K.
Insert EW ×2
Insert EW
Insert NS.
Bundle K, GS, EW and NS.
Insert the PWB
(until securely locked).
Insert GS and dress
the leads with no
slack.Fold back and
bundle the leads.
Insert SH.
Connect M.
(Keep the M leads tight.)
Couple the speaker
connectors
(for both sides).
Couple the speaker
connectors
(for both sides).
Dress the speaker leads
(for both sides).
Catch them at the hooks indicated.
Dress the speaker leads
(for both sides).
Catch them at the hooks
indicated.
Connect
the coating ground lead
(2 points).
Connect Pu.
Remove the pin cover
and fit the CRT PWB.
Connect the anode
(after connecting the
coating ground lead).
Anode clamp: LHLDW1087CEKZ x2
Reposition the anode clamp.
Keep the CRT and other leads
10 mm or more away
from the anode lead.
Bundle the K and
anode leads.
Secure the CA leads
at 2 spots.
Secure the AC cord at 2 spots.
Place the core between
the two wire holders.
Insert the AC cord holder (LHLDK0014PEZZ)
into the indicated recess.
Speaker boxe:RSP-Z0109CEZZ x2
Place the speaker boxes in
position and tighten the 4 screws.
Screw:LX-TZ3096CEFD ×4
The wider side is the
positive terminal. Do not
confuse the right and left
speakers.Their polarities
are different from each
other.
Pu/Mg
Screw
Screw
å
å
å
å
å

11
34N-WF5H
CIRCUIT PROTECTION
The receiver is protected by a 5.0A fuse (F701),
mounted on PWB-F, wired into one side of the AC
line input.
X-RADIATION PROTECTOR CIRCUIT TEST
After service has been performed on the horizontal
deflection system, high voltage system, B+ system,
test the X-Radiation protector circuit to ascertain
proper operation as follows:
1. Apply 120V AC using a variac transformer for
accurate input voltage.
2. Allow for warm up and adjust all customer controls
for normal picture and sound.
3. Receive a good local channel.
4. Connect a digital voltmeter toTP653 and make sure
that the voltmeter reads 10.9 ±0.6V.
5. Apply external 12.0V DC at TP653 by using an
external DC supply, TV must be shut off.
6. To reset the protector, unplug the AC cord and plug
the AC cord power on. Now make sure that normal
picture appears on the screen.
7. If the operation of the horizontal oscillator does not
stop in step 5, the circuit must be repaired before the
set is returned to the customer.
HIGH VOLTAGE CHECK
High voltage is not adjustable but must be checked
to verify that the receiver is operating within safe
and efficient design limitations as specified checks
should be as follows:
1. Connect an accurate high voltage meter between
ground and anode of picture tube.
2. Operate receiver for at least 15 minutes at 120V AC
linevoltage,with astrongairsignal oraproperlytuned
in test signal.
3. Enter the service mode (JWS mode).Enter the JWS
address "170" and data "1" (Y-Mute and V-Stop).
4. Thevoltageshould beapproximately,35.0kV (atzero
beam).
Ifacorrect readingcannotbe obtained,checkcircuitry
formalfunctioning components. Afterthevoltagetest,
makeY-mute off to the normal mode.
INSTALLATION AND SERVICE INSTRUCTIONS
Note: (1)When performing any adjustments to resistor controls and transformers use non-metallic
screwdrivers or TV alignment tools.
(2)Before performing adjustments, the TV set must be on at least 15 minutes.

12
34N-WF5H
ELECTRICAL ADJUSTMENT
The TV set has been factory-adjusted to optimum condition. If by any chance an adjustment point gets out of spec
or readjustment is needed after component part replacement, take the following steps.
»Instruments required for servicing
• STB (Set Top Box)
Use model TU-DTV1000 that is already available on the market.
• HD Signal Generator
Used to generate 1080I monoscope pattern.
• NTSC Signal Generator
Used to generate monoscope, crosshatch and half color bar patterns.
»Calling the service mode (JWS mode)
Holding down the MENU button on the TV set front, turn on the power button on theTV set .
The screen as shown in Figure A. appears and theTV set is now in the service mode (JWS mode).
ADDRESS
DATA
PICTURE MODE
0 0 0
0
STRETCH
Figure A.
»To Exit the Service Mode (JWS mode)
Turn the television off by pressing the power button.
»Service Mode (JWS mode) Functions
1) The following adjustments and settings can be handled with the buttons on the R/C unit.
1Video Adjustments (Picture, Tint, Color, Brightness)
2Deflection Adjustments (Vertical Linearity, Vertical Size, Vertical Position)
(Horizontal Size, Side Pincushion, Horizontal Position)
3Initial Factory Settings (Initial Factory Settings 1 and 2, V-Stop Setting)
4White Balance Adjustments (Red/Green/Blue Cut-off, Green/Blue Drive)
5On-Screen Display Positioning (Horizontal Display Position)
2) Applied buttons and their functions
In the service mode (JWS mode), the following buttons on the R/C Unit can be used for special functions.
BUTTON FUNCTION
1~9, 0 Used to enter numerical address settings; corresponding to numbers 0 thru 9.
100 Used as CLEAR button to go back to the initial screen.
INPUT Used as ENTER button to input addresses and data.
VOLUME UP Used to turn up data.
VOLUME DOWN Used to turn down data.
POWER Used to exit the mode.

13
34N-WF5H
3) Address settings (selecting adjustment and setting items)
1Using the numeric buttons (0 thru 9), type in an address from the highest digit (left) to the lowest digit
(right) one by one. Each time a digit is buttoned in, the cursor moves to the next entry position.
2Using the INPUT button, enter the address.The cursor moves to the data display position and the se-
lected address status is displayed there.
3To adjust the white balance cut-off level, it is necessary to keep the screen cut off. It is therefore impossi-
ble to keep adjusting it with the address being displayed on-screen. (For details, refer to the White Bal-
ance Adjustment.)
•Display change example
In selecting the address "100" (vertical linearity):
000 00 00 00
0
00
000
1111
19
(Address)
(Data display)
Initial display Button in for "1" Button in for "0" Button in for "0" Button in for "INPUT"
`If the wrong address has been buttoned in, use the “100”key to clear the address display and get it
back to the initial one.
4) Data settings (adjusting and setting items)
1Use the VOLUME UP/DOWN buttons to modify the data.
2Use the INPUT button to enter the modified data (setting).
•For a function execute command address (factory-setting function and etc.), the INPUT button is used
to select and call the function.With the adjustment function selected, the button is employed to enter
the data of an item.
`When the data has been modified in the adjustment function, the new data will be immediately
entered regardless of the INPUT button.Keep in mind, therefore, that the original data cannot be
held.
•Data range
Mode Setting Function: 0 or 1
Adjustment Function: As per each adjustment item (separately discussed)
»Initial factory settings
When the following services have been made, it is necessary to make the initial factory settings.
1) When the IC3102 (Memory IC) has been replaced:
This IC stores the video- and deflection-related data in memory. A replacement IC3102 does not have any
data written in (Adjustment 0). It is therefore required to make the initial settings 1 and 2 on it.Take the
following procedure.
1Initial Factory Settings 1 (Initializing the IC)
2Initial Factory Settings 2 (Making the software menu setting data to the factory-adjustment level)
3Various Adjustments
2) When the channel selection IC3501 (Micro-processor) has been replaced:
1Initial Factory Settings 2
When the micro-processor alone has been replaced, just make this adjustment, not any other ones.
ADDRESS SETTING ITEM DATA VARIABLE RANGE
001 Initial factory settings 1 0/1: Use "1"
002 Initial factory settings 2 0/1: Use "1"

14
34N-WF5H
Adjustment items
Video-Related Adjustment
Make the initial factory settings 2 first and then go to this adjustment.
JWS
ADDRESS
160 Picture 0~69 13 13 25(JWS173) 25(JWS173)(0~127)
162 Tint 0~127 32 32 ––
164 Color 0~54 21 21 ––
166 Brightness 16~174 58(480P) 63(1080I) 124 64(JWS174) 64(JWS174)(0~127)
DATA
VARIABLE
RANGE NTSC
Signal Input 1080I Input HD-IN (RGB) 1080I Input HD-IN (RGB) 480P Input
REFERENCE DATA
Deflection-Related Adjustment
Make the initial factory settings 2 first and then go to this adjustment.
In this adjustment, the data are different by the SIDE-BAR, SMART-STRETCH, CINEMA-ZOOM and STRETCH
modes.
JWS
ADDRESS
100 Vertical Linearity 0~31 23 23 23 23 23 22 23 23 23 23 23
102 Vertical Size 0~96 37 44 52 59 70 80 40 47 38 37 40
105 Vertical Position 0~127 65 63 63 63 61 60 65 63 70 70 61
108 Horizontal Size 0~63 18 40 17 39 19 40 17 39 39 41 15
110 Side Pincushion Adjustment 0~63 16 19 22 26 31 36 18 22 19 18 17
112 Horizontal Position 0~127 53 60 53 60 53 60 53 60 59 61 53
114 Trapezoidal Distortion 0~127 67 67 67 67 67 67 67 67 67 67 67
116 Corner Distortion 0~31 22 23 25 26 26 27 22 23 22 22 22
118 Horizontal Compensation 0~723232323 3 3 2
DATA
VARIABLE
RANGE
HD-IN
(RGB)
480P Input
HD-IN
(RGB)
1080I Input
1080I
Input
ITEM
REFERENCE DATA
NTSC Signal Input
SIDE BAR
SMART STRECH CINEMA ZOOM STRECH
White Balance Adjustments
Make the initial factory settings 2 first and then go to this adjustment.
150 Red cut-off 64~255 64 64 64 64 64
152 Green cut-off 64~255 64 64 64 64 64
154 Blue cut-off 64~255 64 64 64 64 64
156 Green drive 10~117 64 64 64 64 64
158 Blue drive 10~127 64 64 64 64 64
DATA
VARIABLE
RANGE NTSC Signal Input 1080I Input HD-IN (RGB)
1080I Input HD-IN (RGB) 480P Input
REFERENCE DATA
On-Screen Display Positioning
Make the initial factory settings 3 first and then go to this adjustment.
JWS ADDRESS ITEM INITIAL VALUE DATA VARIABLE RANGE
020 On-screen Display Horizontal Position 8 (1080I mode) 0~255
14 (480P mode)
<Note>
When the initial factory settings 1 have been made, the initial factory settings 2 and the line adjustment data are
all cleared.This would require readjustments for all the modes.
Before replacing an IC, write down the data settings in all the modes.Note, however, that the settings may be
different from unit to unit.Take the above reference data as an adjustment guideline.
JWS ADDRESS ITEM DATA VARIABLE RANGE
001 Initial Factory Settings 1 Use "1"
002 Initial Factory Settings 2 Use "1"
170 Y-Mute & V-Stop Setting Use "1"
Table A.
Table B.
Table C.
Table D.
ITEM
JWS
ADDRESS
ITEM
480P 1080I
Table E.
480P 1080I 480P 1080I 480P 1080I
480P mode 1080I mode

15
34N-WF5H
No. AdjustingPoint Adjusting Conditions Adjusting Procedure
1 VCO adjustment
(L205 and L255 on
Tuner Unit)
Signal: Good local channel
Adjusting point:
L205 and L255
Specification:
2.2 ±0.1 Vp-p
1. Receive the good local channel.
2. Connect the digital voltmeter to pins (28) and (29)
of JA connector (SC1401).
3. Select the JWS address 033 and set it to "1".
4. Adjust the VCO coils (L205 and L255) to have the
2.2V level.(Main: L205, Sub: L255)
5. Set the JWS address 033 to "0".
6. Clear the JWS address 033 and quit the JWS
mode.
2 RF AGC adjust-
ment (R219 and
R269 onTuner
Unit)
Signal: Good local channel
Adjusting point:
R219 and R269
Specification:
No noticeable noise
1. Receive the good local channel.
2. Select the JWS address 033 and set it to “1”.
3. Adjust R219and R269to achieve optimumscreen
withoutnoises andbeats. (Main:R219,Sub: R269)
4. Receive other channel signals. Check the screen
as mentioned in the above step 3.
5. Set the JWS address 033 to “0”.
6. Clear the JWS address 033 and quit the JWS
mode.
Note 1:
Before switching to other channels (in Step 4 .
above), take Steps 5. and 6. and quit the JWS
mode.
Note 2:
When the R219 and R269 controls are set to mini-
mum, there will be nothing seen on the screen
(black raster).
3 Detection output
level adjustment
(R233 and R283 on
Tuner Unit)
Signal: NTSC standard half
color bar signal
Adjusting point:
R233 and R283
Specification:
1.0 ±0.05 Vp-p
1. Receive the NTSC standard half color bar signal.
2. Connect theoscilloscope betweenTP401(TP402)
onTuner Unitand GND.(Main:TP401,Sub:TP402)
3. Using the R233 control, adjust the main IF detec-
tion output level.
4. Using the R283 control, adjust the sub IF detec-
tion output level.
1.0Vp-p

16
34N-WF5H
No. Adjusting Point Modulator Settings
(Leader LMS237)
Adjusting
Conditions Adjusting Procedure
4 Stereo separation
adjustment
(R329, R331, R301
and R313 onTuner
Unit)
Adjusting point:
R329, R331
Measuring terminal:
(TP301) Pin (7)
of IC301
Specification:
282 ±10 mVp-p
1. Internal modulation:
400 Hz
2. Monaural:
100% modulation
1. Connect theoscilloscopeprobe
to (TP301) pin (7) of IC301.
2. Adjust the input level to
282mVp-p.
3. Switch the main and sub sig-
nals to adjust both R329 and
R331.
Adjusting point:
R301
Measuring terminal:
(TP303) Pin (22)
of IC301
Specification:
Minimum AC
voltage
1. Internal modulation:
300 Hz
2. Stereo switch at ON,
L-channel output
(130% modulation)
alone (L+R and L-R
not allowed)
3. Stereo mode
1. Connect theoscilloscopeprobe
to pin (22) (TP303) of IC301.
2. Adjust the separation control
(R301) to get the AC voltage to
minimum.
Adjusting point:
R313
Measuring terminal:
(TP303) Pin (22)
of IC301
Specification:
Minimum AC
voltage
1. Internal modulation:
3 kHz
2. Stereo switch at ON,
L-channel output
(130% modulation)
alone
3. Stereo mode
1. Connect theoscilloscopeprobe
to pin (22) (TP303) of IC301.
2. Adjust the separation control
(R313) to get the AC voltage to
minimum.

17
34N-WF5H
6 MainY signal level
adjustment
(R/C, JWS address
473)
1. Connect the oscilloscope probe betweenTP1801
and GND.
2. In the twin-picture mode, receive the NTSC stand-
ardhalfcolorbar signalfortheleft-sidescreen (Main
Screen).
3. Using the VOLUME UP/DOWN keys in the JWS
address 473, adjust the waveform amplitude of the
main luminance signal atTP1801 to 0.7±0.05 Vp-p.
Note: The amplitude must be measured from the
black level to the white peak.
0.8Vp-p
7 Main-screen tint
adjustment
(R/C, JWS address
162)
Signal: Good local channel
Adjusting point:
Remote Control
(JWS address 162)
Specification:
Normal flesh tones
1. Set the AV mode to "STD-1".
2. In the twin-picture mode, receive the good local
channel for the left-side screen (Main screen).
3. Enter the JWS address 162. Using the VOLUME
UP/DOWN keys,visually adjust thetint tothe best.
4. Switch the channels. Make sure the tint is opti-
mum on other channels.
No. AdjustingPoint Adjusting Conditions Adjusting Procedure
5 3DY/C separation
level adjustment
(R7000:Y/C3D
Unit)
1. Receive the NTSC standard half color bar signal.
2. Connect the oscilloscope probe between pin (8)
of SC3203 and GND.
3. Adjust R7000 so that the waveform amplitude of
the luminance signal at pin (8) of SC3203 should
be 0.8±0.05 Vp-p.
Note: The amplitude must be measured from the
black level to the white peak.
8 Main-screen color
adjustment
(R/C, JWS address
164)
Signal: Good local channel
Adjusting point:
Remote Control
(JWS address 164)
Specification:
Normal color level
1. Take the same steps 1. and 2. for the tint adjust-
ment.
2. Enter the JWS address 164. Using the VOLUME
UP/DOWN keys, visually adjust the color to the
best.
3. Switch the channels. Make sure the color is opti-
mum on other channels.
Signal: NTSC standard half
color bar signal
Adjusting point:
(R7000:Y/C 3D Unit)
Specification:
0.8 ±0.05 Vp-p
Signal: NTSC standard half
color bar signal
Adjusting point:
Remote Control
(JWS address 473)
Specification:
0.7 ±0.05 Vp-p

18
34N-WF5H
No. AdjustingPoint Adjusting Conditions Adjusting Procedure
9 Brightness adjust-
ment
(R/C, JWS address
166) (480P/1080I)
Signal: Good local channel
Adjusting point:
Remote Control
(JWS address 166)
Specification:
Normal brightness
level
1. Make this adjustment after the deflection, white
balance, normal mask, purity, convergence and
focus have all been completely adjusted.
2. Set to the video standard condition.
(Picture at MAX, brightness and sharpness at
CENTER)
3. Set the VIEW MODE to STRETCH.
4. Receive the good local channel.
5. Enter the JWS address 166.Adjust the brightness
to the best point.
6. Switch to the 1080I mode.Make the same adjust-
ment.
10 Picture adjustment
(R/C, JWS address
160)
Signal: Good local channel
Adjusting point:
Remote Control
(JWS address 160)
Specification:
Normal contrast range
1. Make this adjustment after the Y signal level has
been completely adjusted.
2. Take the same steps 1., 2., 3.and 4.for the bright-
ness adjustment.
3. Enter the R/C address 160. Adjust the picture to
the best point.
11 Sub-screen Pic-
ture adjustment
(R/C, JWS address
250)
Signal: NTSC standard half
color bar signal
Adjusting point:
Remote Control
(JWS address 250)
Measuring point: TP1801
Specification: 0.7±0.05 Vp-p
1. In thetwin-picture mode.Receivethe NTSCstand-
ard half color bar signal for the right-side screen.
2. Connect the oscilloscope to TP1801. Enter the
JWSaddress 250. Usingthe VOLUMEUP/DOWN
keys,adjust the amplitudebetween the blacklevel
and white peak to 0.7±0.05 Vp-p.
12 Sub-screen tint
adjustment (R/C,
JWS address 258)
Signal: Good local channel
Adjusting point:
Remote Control
(JWS address 258)
Specification:
Normal flesh tone
1. In the twin-picture mode, receive the good local
channel for the right-side screen (sub-screen).
2. Enter the JWS address 258. Using the VOLUME
UP/DOWNkeys,visually adjustthetint onthe right-
side screen to that on the left-side screen.
3. Switch thechannelsforthe right-sidescreen.Make
sure the tint is optimum on other channels.
13 Sub-screen color
adjustment (R/C,
JWS address 259)
Signal: Good local channel
Adjusting point:
Remote Control
(JWS address 259)
Specification:
Normal color level
1. In the twin-picture mode, receive the good local
channel for the right-side screen (sub-screen).
2. Enter the JWS address 259. Using the VOLUME
UP/DOWN keys, visually adjust the color on the
right-side screen to that on the left-side screen.
3. Switch thechannelsforthe right-sidescreen.Make
sure the color is optimum on other channels.
14 Deflection distor-
tion, vertical and
horizontal position
adjustments
Discussed here are the adjustment procedures for
the STRETCH-mode screen size.
For the other modes, refer to Table B. and go to their
respective procedures.
Make these adjustments for the 480P and 1080I
modes as well.

19
34N-WF5H
No. AdjustingPoint Adjusting Conditions Adjusting Procedure
15 STRETCH-mode
vertical linearity
adjustment
(R/C, JWS address
100)
Signal: Monoscope pattern
signal
Adjusting point:
Remote Control
(JWS address 100)
Specification: Best position
1. Set the AV-mode to "STD-1".
2. Set the screen size to STRETCH-mode.
3. Receive the monoscope pattern signal.
4. Enter the JWS address 100. Using the VOLUME
UP/DOWN keys, adjust the vertical linearity to the
best position.
16 STRETCH-mode
vertical position
adjustment
(R/C, JWS address
105)
Adjusting point:
Remote Control
(JWS address 105)
Specification:
Center position 0±10 mm
1. Take the same steps 1., 2. and 3. for the
STERTCH-mode vertical linearity adjustment.
2. Enter the JWS address 105. Using the VOLUME
UP/DOWN keys, adjust the vertical position to
center.
17 STRETCH-mode
vertical size
adjustment
(R/C, JWS address
102)
Adjusting point:
Remote Control
(JWS address 102)
Specification:
Overscan at "Table-1"
and "Table-2"
1. Take the same steps 1., 2. and 3. for the
STERTCH-mode vertical linearity adjustment.
2. Enter the JWS address 102. Using the VOLUME
UP/DOWN keys, adjust the overscan at "Table-1"
and "Table-2".
18 STRETCH-mode
side pincushion
adjustment (R/C,
JWS address 110)
Adjusting point:
Remote Control
(JWS address 110)
Specification:
Straight outermost line
1. Take the same steps 1. and 2. for the STERTCH-
mode vertical linearity adjustment.
2. Receive the crosshatch pattern signal.
3. Enter the JWS address 110. Using the VOLUME
UP/DOWN keys, adjust the outermost line to be
straight.
4. Make the horizontal position and horizontal size
adjustments and then finely adjust the horizontal
side pincushion.
19 STRETCH-mode
horizontal position
adjustment
(R/C, JWS address
112)
Adjusting point:
Remote Control
(JWS address 112)
Specification:
Symmetry about
vertical center
1. Take the same steps 1., 2. and 3. for the
STERTCH-mode vertical linearity adjustment.
2. Enter the JWS address 112. Using the VOLUME
UP/DOWNkeys, achieve symmetryabout thever-
tical center.
20 STRETCH-mode
horizontal size
adjustment
(R/C, JWS address
108)
Adjusting point:
Remote Control
(JWS address 108)
Specification:
Overscan at "Table-1"
and "Table-2"
1. Take the same steps 1., 2. and 3. for the
STERTCH-mode vertical linearity adjustment.
2. Enter the JWS address 108. Using the VOLUME
UP/DOWNkeys,adjust thesetting to"Table-1"and
"Table-2".
21 STRETCH-mode
trapezoidal distor-
tion adjustment
(R/C, JWS address
114)
Signal: Crosshatch pattern
signal
Adjusting point:
Remote Control
(JWS address 114)
Specification:
Vertical lines parallel
with effective area
1. Take the same steps 1. and 2. for the STERTCH-
mode vertical linearity adjustment.
2. Receive the crosshatch pattern signal.
3. Enter the JWS address 114. Using the VOLUME
UP/DOWN keys, adjust the vertical lines to be
parallel with the effective area.

20
34N-WF5H
No. AdjustingPoint Adjusting Conditions Adjusting Procedure
22 STRETCH-mode
corner distortion
adjustment
(R/C, JWS address
116)
1. Take the same steps 1. and 2. for the STERTCH-
mode vertical linearity adjustment.
2. Receive the crosshatch pattern signal.
3. Enter the JWS address 116. Using the VOLUME
UP/DOWN keys, adjust the vertical lines to be
straight.
Adjusting point:
Remote Control
(JWS address 116)
Specification:
Straight vertical lines
Deflection distortion, vertical and horizontal position adjustments
Make the two-pattern adjustments in the quality-picture modes (480P/1080I).
Table-1.
MODE STRECH SIDE-BAR SMART-STRECH CINEMA-ZOOM
4:3 16:9
Vertical Size (92) (93) (85) (71)
Overscan 8% 7% 15% 29%, 6%
Horizontal Size (92.5) (95) (94) (92)
Overscan 7.5% 5% 6% 8%
Side Pincushion Adjustment Outermost line
Vertical Size (102)
Vertical Linearity (100)
Vertical Position (105)
Horizontal Size (108)
Side Pincushion (110)
Trapezoidal Distortion (114)
Horizontal Position (112)
Picture edges
(borders between
mask and picture)
1.5 line from
outermost
Specification
Adjustment items
Other signal inputs
1080I INPUT HD-IN (RGB) 1080I INPUT HD-IN (RGB) 480P INPUT
Vertical Size (92) (92) (92)
Overscan 8% 8% 8%
Horizontal Size (92) (88) (91)
Overscan 8% 12% 9%
Side Pincushion Adjustment
Vertical Size (102)
Vertical Linearity (100)
Vertical Position (105)
Horizontal Size (108)
Side Pincushion (110)
Trapezoidal Distortion (114)
Horizontal Position (112)
Specification
Adjustment items
Table-2.