JVC I'Art AV-27CF36 User manual

SERVICE MANUAL
COPYRIGHT © 2005 Victor Company of Japan, Limited No.YA257
2005/2
COLOR TELEVISION
YA25720052AV-27CF36/R, AV-27CF36/S,
AV-27SF36/S, AV-27SF36/R,
AV-32CF36/Y, AV-32CF36/Z,
AV-32SF36/Y, AV-32SF36/Z
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
BASIC CHASSIS
GJ5

1-2 (No.YA257)
SPECIFICATION
Design & specifications are subject to change without notice.
Items
Contents
AV-27CF36
AV-27SF36
AV-32CF36
AV-32SF36
Dimensions (W ×H ×D) 75.8 cm ×59.3 cm ×50.0 cm
(29-7/8" ×23-3/8" ×19-3/4")
87.7 cm ×69.9 cm ×56.5 cm
(34-5/8" ×27-5/8" ×22-1/4")
Mass 43.0 kg (94.6 Ibs) 64.0 kg (140.8 Ibs)
TV RF System CCIR (M)
Color System NTSC
Sound System BTSC (Multi Channel Sound)
Teletext System Closed Caption (T1 - T4 / CC1 - CC4)
TV Receiving Channels
and Frequency
VHF low
VHF high
UHF
CATV
02ch - 06ch: 54 MHz - 88 MHz
07ch - 13ch: 174 MHz - 216 MHz
14ch - 69ch: 470 MHz - 806 MHz
54MHz - 804 MHz
Low Band: 02 - 06
High Band: 07 - 13
Mid Band: 14 - 22
Super Band: 23 - 36
Hyper Band: 37 - 64
Ultra Band: 65 - 94, 100 - 135
Sub Mid Band: 01, 96 - 99
TV / CATV Total Channel
181 Channels
[Reception of channel A-5 ("95" of the TV set’s on-screen CABLE channel) is
recommended for your TV set.]
Intermediate Frequency Video IF
Sound IF
45.75 MHz
41.25 MHz (4.5 MHz)
Color Sub Carrier 3.58 MHz
Power Input AC120 V, 60 Hz
Power Consumption 140 W 160 W
Picture Tube (Visible size) 68 cm (29”) Measured diagonally
(H: 55.4 cm ×V: 41.8 cm)
80 cm (34”) Measured diagonally
(H: 65.6 cm ×V: 49.6 cm)
High Voltage 30.0 kV ±1.3 kV [at Zero beam current] 31.4 kV ±1.3 kV [at Zero beam current]
Speaker 5 cm ×12 cm (2" ×4-3/4"), Oval type ×2
Audio Power Output 5 W + 5 W
Antenna Terminal (VHF / UHF) F-type connector, 75 Ωunbalanced
Video / Audio input
[Input-1/2/3]
Component Video
[Input-2]
S-video
[Input-1]
Video
Audio
RCA pin jack ×3
Y : 1V(p-p), 75 Ω, negative sync
Pb/Pr : 0.7 V(p-p), 75 Ω
Mini DIN 4-pin ×1
Y : 1 V(p-p), 75 Ω, negative sync
C : 0.286 V(p-p)(burst signal), 75 Ω
1 V(p-p), 75 Ω, negative sync, RCA pin jack ×2
500 mV(rms)(-4dBs), high impedance, RCA pin jack ×6
Audio Output (Fix) 500 mV(rms)(-4dBs), low Impedance, (400 kHz when modulated 100 %), RCA pin jack ×2
Remote Control Unit RM-C203G (Lithium cell battery ×1)

(No.YA257)1-3
SECTION 1
PRECAUTION
1.1 SAFETY PRECAUTIONS
(1) The design of this product contains special hardware, many
circuits and components specially for safety purposes. For
continued protection, no changes should be made to the original
design unless authorized in writing by the manufacturer.
Replacement parts must be identical to those used in the original
circuits. Service should be performed by qualified personnel only.
(2) Alterations of the design or circuitry of the products should not be
made. Any design alterations or additions will void the
manufacturer's warranty and will further relieve the manufacturer
of responsibility for personal injury or property damage resulting
therefrom.
(3) Many electrical and mechanical parts in the products have special
safety-related characteristics. These characteristics are often not
evident from visual inspection nor can the protection afforded by them
necessarily be obtained by using replacement components rated for
higher voltage, wattage, etc. Replacement parts which have these
special safety characteristics are identified in the parts list of Service
manual. Electrical components having such features are
identified by shading on the schematics and by ( ) on the
parts list in Service manual. The use of a substitute replacement
which does not have the same safety characteristics as the
recommended replacement part shown in the parts list of Service
manual may cause shock, fire, or other hazards.
(4) Use isolation transformer when hot chassis.
The chassis and any sub-chassis contained in some products are
connected to one side of the AC power line. An isolation
transformer of adequate capacity should be inserted between the
product and the AC power supply point while performing any
service on some products when the HOT chassis is exposed.
(5) Don't short between the LIVE side ground and ISOLATED (NEU-
TRAL) side ground or EARTH side ground when repairing.
Some model's power circuit is partly different in the GND. The differ-
ence of the GND is shown by the LIVE : ( ) side GND, the ISOLAT-
ED (NEUTRAL) : ( ) side GND and EARTH : ( ) side GND.
Don't short between the LIVE side GND and ISOLATED (NEUTRAL)
side GND or EARTH side GND and never measure the LIVE side
GND and ISOLATED (NEUTRAL) side GND or EARTH side GND at
the same time with a measuring apparatus (oscilloscope etc.). If
above note will not be kept, a fuse or any parts will be broken.
(6) If any repair has been made to the chassis, it is recommended that
the B1 setting should be checked or adjusted (See B1 POWER
SUPPLY check).
(7) The high voltage applied to the picture tube must conform with that
specified in Service manual. Excessive high voltage can cause an
increase in X-Ray emission, arcing and possible component
damage, therefore operation under excessive high voltage
conditions should be kept to a minimum, or should be prevented.
If severe arcing occurs, remove the AC power immediately and
determine the cause by visual inspection (incorrect installation,
cracked or melted high voltage harness, poor soldering, etc.). To
maintain the proper minimum level of soft X-Ray emission,
components in the high voltage circuitry including the picture tube
must be the exact replacements or alternatives approved by the
manufacturer of the complete product.
(8) Do not check high voltage by drawing an arc. Use a high voltage
meter or a high voltage probe with a VTVM. Discharge the picture
tube before attempting meter connection, by connecting a clip lead
to the ground frame and connecting the other end of the lead
through a 10kΩ2W resistor to the anode button.
(9) When service is required, observe the original lead dress. Extra
precaution should be given to assure correct lead dress in the high
voltage circuit area. Where a short circuit has occurred, those
components that indicate evidence of overheating should be
replaced. Always use the manufacturer's replacement
components.
(10) Isolation Check (Safety for Electrical Shock Hazard)
After re-assembling the product, always perform an isolation
check on the exposed metal parts of the cabinet (antenna
terminals, video/audio input and output terminals, Control knobs,
metal cabinet, screw heads, earphone jack, control shafts, etc.) to
be sure the product is safe to operate without danger of electrical
shock.
a) Dielectric Strength Test
The isolation between the AC primary circuit and all metal parts
exposed to the user, particularly any exposed metal part having a
return path to the chassis should withstand a voltage of 1100V AC
(r.m.s.) for a period of one second.
(. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance rat-
ed up to 120V, and 3000V AC (r.m.s.) to an appliance rated 200V
or more, for a period of one second.) This method of test requires
a test equipment not generally found in the service trade.
b) Leakage Current Check
Plug the AC line cord directly into the AC outlet (do not use a line
isolation transformer during this check.). Using a "Leakage
Current Tester", measure the leakage current from each exposed
metal part of the cabinet, particularly any exposed metal part
having a return path to the chassis, to a known good earth ground
(water pipe, etc.). Any leakage current must not exceed 0.5mA AC
(r.m.s.).
However, in tropical area, this must not exceed 0.2mA AC (r.m.s.).
Alternate Check Method
Plug the AC line cord directly into the AC outlet (do not use a
line isolation transformer during this check.). Use an AC
voltmeter having 1000Ωper volt or more sensitivity in the
following manner. Connect a 1500Ω10W 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 exceed 0.3V AC
(r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
(11) High voltage hold down circuit check.
After repair of the high voltage hold down circuit, this circuit shall
be checked to operate correctly.See item "How to check the high
voltage hold down circuit".
AC VOLTMETER
(HAVING 1000 /V,
OR MORE SENSITIVITY)
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
1500 10W
0.15 F AC-TYPE
GOOD EARTH GROUND
PWB
White line side
WHT
PW
POWER CORD
REPLACEMENT WARNING.
Connecting the white line side of power
cord to "WHT" character side.
A V
This mark shows a fast
operating fuse, the
letters indicated below
show the rating.

1-4 (No.YA257)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES
FLAT SQUARE CRT
It became legible from any position by CRT with few reflection
and reflect lumps on the flat screen.
DIGITAL COMB FILTER
By the 3 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.
COMPONENT INPUT
Since the component signal input terminal is equipped, it
reappears direct without deteriorating the signal from DVD.
V-CHIP
Since the V-CHIP is built in, it can choose, view and listen to a
healthy program.
MTS STEREO
The voice multiplex function of the MTS system is built in.
(MTS = Multi channel Television Sound system)
RETURN PLUS
You program a specific channel to return to while scanning
through the channels using the CH+ and CH - keys.
VIDEO INPUT LABEL
This function is used to label video input connections for the
onscreen displays.
WORLD CLOCK
The world clock feature provides time differences for some of
the major cities around the world in real time.
2.2 MAIN DIFFERENCE LIST
2.3 HOW TO IDENTIFY MODELS
How to recognize from the appearance of the model concerned is written below. Please distinguish from several contents currently
printed on the rating label
Item AV-27CF36/R AV-27CF36/S AV-27SF36/S AV-27SF36/R
PICTURE TUBE - - - -
CABINET COLOR SILVER ←GRAY ←
Interactive Plug in Menu NO ←YES ←
XDS ID Display NO ←YES ←
Item AV-32CF36/Y AV-32CF36/Z AV-32SF36/Y AV-32SF36/Z
PICTURE TUBE - - - -
CABINET COLOR SILVER ←GRAY ←
Interactive Plug in Menu NO ←YES ←
XDS ID Display NO ←YES ←
AV-27CF36
AV-27SF36
AV-32CF36
AV-32SF36
MODEL NAME
RA
SA
YA
ZA
DISTINGUISH NAME
MODEL NO.
AC 120V 60Hz
W
TV SCREEN SIZE : DIAGONAL
INCHES
CHASSIS NO.
MANUFACTURED
SERIAL NO.
VIDEO EQUIPMENT
4C43
ME

(No.YA257)1-5
2.4 TECHNICAL INFORMATION
2.4.1 MAIN MI-COM (CPU) PIN FUNCTION
Pin
No. Pin name I/O Function Pin
No. Pin name I/O Function
1 MTS_ADJ I Not used 29 YC_GND - GND
2 AFT1 I AFT voltage for tuner (Tuning frequency control) 30 V1_IN I Not used
3 KEY I Key scan for front control [No signal: H] 31 ABCL I Current for automatic beam (brightness)/contrast limit
4 uP_DVss - GND 32
MONITOR_OUT
O Not used
5 Reset I CPU reset [Reset: L] 33 BLACK_DET - Black level detection filter
6 8MHz_OUT O CPU system clock: 8MHz oscillation 34 SVM_OUT O Y signal for scan velocity scan modulation
7 8MHz_IN I CPU system clock: 8MHz oscillation 35 APL_FIL - Average picture level filter
8 TEST - GND 36 APC_FIL - Automatic phase control filter
9 uP_DVDD I 5V 37 fsc_OUT O Color sub carrier (3.58MHz) for 3-line digital comb filter [IC5201]
10 AGC_MUTE O AGC muting for tuner (when channel select) [Muting : H] 38 YC_Vcc I 5V (for video process circuit)
11 uP_VVSS - GND 39 R_OUT O R signal for CRT output
12 TV_HGND - GND 40 G_OUT O G signal for CRT output
13 FBP_SCP I Flyback pulse (H. pulse) 41 B_OUT O B signal for CRT output
14 HOUT O H. drive (oscillation) 42 RGB_Vcc I 9V (for RGB process circuit)
15 H_Vcc I 9V (for H. oscillation start) 43 IK_IN I Not used
16 HAFC_1 - H. AFC filter 44 TV_DGND - GND
17 Vsaw - V. saw filter 45 uP_AGND - GND
18 VOUT O V. drive 46 uP_AVdd - 5V
19 EW_OUT O Parabola waveform (for sidepin correection) 47 MAIN_POWER O Power on/off switching control [Powen on: L]
20 X-RAY I X-ray detection (for protection) [Detection : H] 48 PANORAMA I Not used: Aspect size control [PANORAMA: L]
21 Ys I Not used 49 SDA0 I/O Data for Inter IC control bus (for various devices)
22 Cb_IN I Cb (external) signal 50 SCL0 O Clock for Inter IC control bus (for various devices)
23 Y_IN I Y (external) signal 51 SDA1 I/O Data for Inter IC control bus (for main memory)
24 Cr_IN I Cr (external) signal 52 A_MUTING O Audio muting [Muting : H]
25 TV_DVcc I 3.3V 53 SCL1 O Clock for Inter IC control bus (for main memory)
26 V3IN/CIN I Chroma signal (for YC separation output) 54 LED O POWER / ON TIMER LED lndication [lighting : L]
27 EHT_IN I Not used 55 REMOCON I Remote control sensor input [No input : H]
28 V2_IN/Y_IN I Y signal (for YC separation output) 56 ASP_ABL I Not used

1-6 (No.YA257)
SECTION 3
DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE
3.1.1 REMOVING THE REAR COVER
(1) Disconnect the power plug.
(2) Remove the 12 screws [A].
(3) Withdraw the REAR COVER backward.
3.1.2 REMOVING THE AV TERMINAL BOARD
• Remove the REAR COVER.
(1) Remove the 4 screws [B].
(2) Withdraw the AV TERMINAL BOARD toward you.
3.1.3 REMOVING THE CHASSIS
• Remove the REAR COVER.
• Remove the AV TERMINAL BOARD.
(1) Slightly raise the both sides of CHASSIS by hand.
(2) Remove the 2 claws under the both side of the CHASSIS
from the front cabinet.
(3) Withdraw the CHASSIS backward.
(If necessary, remove the wire clamp, connectors etc.)
3.1.4 REMOVING THE SPEAKER
• Remove the REAR COVER.
AV-27WF36
(1) Remove the 4 screws [C] and remove the SPEAKER.
(2) Follow the same steps when removing the other hand
SPEAKER.
AV-32WF36
(1) Remove the 2 screws [D], then remove the SPEAKER
HOLDER.
(2) Remove the 2 screws [E], then remove the SPEAKER
from the SPEAKER HOLDER.
(3) Follow the same steps when removing the other hand
SPEAKER.
NOTE :
When remove the 2 screws [D] of the SPEAKER, remove
the lower side screw first, and then takeing out the upper
one.
3.1.5 REMOVING THE LED & POWER SW PWB
• Remove the REAR COVER.
(1) Remove the 2 screws [F].
(2) Withdraw the LED & POWER SW PWB toward you.
*If necessary, remove the wire clamp, connector etc.
3.1.6 REMOVING THE FRONT CONTROL PWB
• Remove the REAR COVER.
(1) Remove the 2 screws [G].
(2) Withdraw the FRONT CONTROL PWB toward you.
*If necessary, remove the wire clamp, connector etc.
3.1.7 CHECKING THE CHASSIS
To check the PW Board from back side.
(1) Pull out the CHASSIS (refer to REMOVING THE CHASSIS).
(2) Erect the CHASSIS vertically with the HVT side facing up
so that you can easily check the back side of the PW board.
CAUTION :
• When erecting the CHASSIS, be careful so that there will be
no contacting with other PW Board.
• Before turning on power, make sure that the wire connector
is properly connected.
•When conducting a check with power supplied, be sure
to confirm that the CRT EARTH WIRE (BRAIDED ASS'Y)
is connected to the CRT SOCKET PWB.
3.1.8 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 the wires
with a new cable tie.

(No.YA257)1-7
Fig.1
REAR COVER
FRONT CABINET
CRT
SOCKET
PWB
FRONT CONTROL PWB
LED & POWER SW PWB
SPEAKER
SPEAKER
AV-27CF36
AV-27SF36
SPEAKER
HOLDER
SPACER
AV-32CF36
AV-32SF36
Claw
Claw
AV SELECTOR PWB
MAIN PWB
AV TERMINAL
BOARD
POWER CORD
B
F
G
D
E
C
A

1-8 (No.YA257)
3.1.9 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 cloth
(shown in Fig. 2).
(2) While keeping the surface of CRT down, mount the TV set
on the CRT change table balanced will as shown in Fig. 2.
(3) Remove 4 screws marked by arrows with a box type screw-
driver as shown in Fig. 3.
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. 4.
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.
Fig.2
Fig.3
Fig.4
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.5.Wipe around the anode button with clean and dry cloth. (Fig.5)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.6)
Silicon grease product No. KS - 650N
Fig.5 Fig.6
CRT CHANGE TABLE
APPROX.
35cm
CLOTH
CRT
BOX
TYPE
SCREW
DRIVER
CRT
CHANGE
TABLE
CRT
CHANGE TABLE
CRT
CABINET
Anode button
CRT
Silicon grease
coating
Silicon grease
should be coated
by 5mm or more
from the outside
diameter of anode
cap.
Approx.
20mm (Do not
coat grease on
this section
Anode button
(No sticking of
silicon grease)
Anode cap
Coating position
of silicon grease

(No.YA257)1-9
3.2 MEMORY IC REPLACEMENT
• This model uses the memory IC.
• This memory IC stores data for proper operation of the video and drive circuits.
• When replacing, be sure to use an IC containing this (initial value) data.
3.2.1 MEMORY IC REPLACEMENT PROCEDURE
1. Power off
Switch off the power and disconnect the power plug.
2. Replace the memory IC
Be sure to use a memory IC written with the initial setting data.
3. Power on
Connect the power cord to the wall outlet and switch on the
power.
4. Receiving channel setting
Refer to the OPERATING INSTRUCTIONS (USER'S GUIDE)
and set the receive channels (Channels Preset) as described.
5. User settings
Check the user setting items according to the "FACTORY
SETTING ITEM" table.
Where these do not agree, refer to the OPERATING
INSTRUCTIONS (USER'S GUIDE) and set the items as
described.
6. SERVICE MODE setting
Verify what to set in the SERVICE MODE, and set whatever is
necessary(Fig.1) .
Refer to the SERVICE ADJUSTMENT for setting.
3.2.2 SERVICE MODE SETTING ITEMS
Fig.1
Setting items Settings Item No.
1. V/C(S)
(Video setting) Adjust S01~S48
2. DEF(D)
(Deflection setting) Adjust D01~D33
3. SOUND(A)
(Audio setting) Adjust A01~A08
4. OTHERS [Do not adjust]
(Factory setting) Fixed F01~F18
5. 3L Y/C(LYC) [Do not adjust]
(Y/C separate setting) Fixed LYC01~LYC12
7. LOW LIGHT
(White balance setting) Adjust ---
8. HIGH LIGHT
(White balance setting) Adjust ---
9. VCO
(VCO setting) Adjust ---
11. I2C BUS [Do not adjust]
(I2C BUS setting) Fixed ---
12.SYSTEM (SYS)
(System constant setting) Fixed SYS01~SYS26
1.
3.
5.
7.
9.
11.
2.
4.
8.
12.
SERVICE MENU
DEF(D)
OTHERS(F)
HIGH LIGHT
SYSTEM(SYS)
SELECT BY
OPERATE BY EXIT BY EXIT
V/C(S)
SOUND(A)
3L Y/C(LYC)
LOW LIGHT
VCO
I2C BUS

1-10 (No.YA257)
3.2.3 SETTINGS OF FACTORY SHIPMENT
3.2.3.1 BUTTON OPERATION 3.2.3.2 REMOTE CONTROL DIRECT OPERATION
3.2.3.3 REMOTE CONTROL MENU OPERATION
(1) PICTURE ADJUST
(2) SOUND ADJUST
(3) CLOCK / TIMERS
(4) INITIAL SETUP
Setting item Setting position
POWER Off
CHANNEL CH-02
VOLUME 10
Setting item Setting position
INPUT TV
CHANNEL CH-02
VOLUME 10
MUTING OFF
DISPLAY OFF
SLEEP TIMER OFF
VIDEO STATUS DYNAMIC
Setting item Setting position
TINT 0
COLOR 0
PICTURE +8
BRIGHT 0
DETAIL +8
COLOR TEMPERATURE HIGH
NOISE MUTING ON
VSM ON
Setting item Setting position
BASS 0
TREBLE 0
BALANCE 0
MTS STEREO
Setting item Setting position
SET CLOCK OFF
ON / OFF TIMER OFF
Setting item Setting position
LANGUAGE ENG.
CLOSED CAPTION OFF(CC1/T1)
FRONT PANEL LOCK OFF
AUTO SHUT OFF OFF
XDS ID [AV-27/32SF36] ON
V-CHIP OFF

(No.YA257)1-11
3.3 REPLACEMENT OF CHIP COMPONENT
3.3.1 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.
3.3.2 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.
3.3.3 REPLACEMENT STEPS
1. How to remove Chip parts
[Resistors, capacitors, etc.]
(1) As shown in the figure, push the part with tweezers and
alternately melt the solder at each end.
(2) Shift with the tweezers and remove the chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply extra solder to each lead.
(2) As shown in the figure, push the part with tweezers and
alternately melt the solder at each lead. Shift and remove
the chip part.
NOTE :
After removing the part, remove remaining solder from the
pattern.
2. How to install Chip parts
[Resistors, capacitors, 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. 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 Aas indicated in the figure.
(4) Then solder leads Band C.
SOLDER SOLDER
A
B
C
A
B
C

1-12 (No.YA257)
SECTION 4
ADJUSTMENT
4.1 ADJUSTMENT PREPARATION
(1) There are 2 ways of adjusting this TV : One is with the
REMOTE CONTROL UNIT and the other is 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.
4.2 PRESET SETTING BEFORE ADJUSTMENTS
Unless otherwise specified in the adjustment items, preset the
following functions with the REMOTE CONTROL UNIT.
4.3 MEASURING INSTRUMENT AND FIXTURES
• DC voltmeter (or digital voltmeter)
• Oscilloscope
• Signal generator (Pattern generator) [NTSC]
• TV audio multiplex signal generator
• Remote control unit
4.4 ADJUSTMENT ITEMS
CHECK ITEM
• B1 VOLTAGE check
• HIGH VOLTAGE HOLD DOWN check
FOCUS
• FOCUS adjustment
DEFLECTION CIRCUIT
• V. SIZE / V. POSITION adjustment
• H. POSITION / H. SIZE / SIDE PIN adjustment
VIDEO CIRCUIT
• WHITE BALANCE(High Light & Low Light) adjustment
• SUB BRIGHT adjustment
• SUB CONTRAST adjustment
MTS CIRCUIT
• MTS INPUT LEVEL adjustment
• MTS SEPARATION adjustment
Item Preset value
VIDEO STATUS STANDARD
PICTURE adjustment All 00
COLOR TEMPERATURE LOW
VSM OFF
SOUND adjustment All 00

(No.YA257)1-13
4.5 ADJUSTMENT LOCATIONS
UPPER : FOCUS
CN001
CN007
B
B
AV SELECTOR
PWB
S1
HV
E1
CRT EARTH
(BRAIDED ASS'Y)
HVT
HVT
IC702
SS
LOWER : SCREEN
S421
DOWN UP
IC201
CN004
MAIN PWB
PW
F901
DEG
MEMORY IC
TUNER
5A
V CENTER SW
V CENTER SW
FRONT
TOP
CRT SOCKET PWB (SOLDER SIDE)
LED & POWER SW PWB FRONT CONTROL PWB
FRONT
FRONT
CN6007
CN6006
1 : TP-E
2 : X-RAY2
3 : X-RAY1
4 : NC
5 : TP-91
CN5006
CN005
CN3004 CN3005
1
5
SPEAKER POWER CORD
POWER SW
POWER LED
( )
DEF. YOKE
DEG COIL
TP-R TP-B
TP-E

1-14 (No.YA257)
4.6 BASIC OPERATION OF SERVICE MODE
1.V/C(S)
2.DEF(D)
3.SOUND(A)
4.OTHERS(F) [Fixed value]
F01
A01 IN LEVEL
D01 V FREQ
RF 4 : 3 STD LOW
RF 4 : 3 STD LOW
S01 BRIGHT
5.3L Y/C(LYC) [Fixed value]
LYC01
1.V/C(S) 2.DEF(D)
3.SOUND(A) 4.OTHERS(F)
5.3L Y/C(LYC)
7.LOW LIGHT 8.HIGH LIGHT
9.VCO
11.I2C BUS 12.SYSTEM(SYS)
SELECT BY
OPERATE BY EXIT BY EXIT
SERVICE MENU
BRIGHT
7.LOW LIGHT
SUB MENU
MAIN MENU
12.SYSTEM(SYS) [Fixed value]
SYS01 VIDEO IN
11.I2C BUS [Fixed value]
I2C BUS ON
9.VCO [Fixed value]
8.HIGH LIGHT
TOO HIGH GOOD TOO LOW
SYNC: YES
AFC ON
FINE 0

(No.YA257)1-15
4.6.1 TOOL OF SERVICE MODE OPERATION
Operate the SERVICE MODE with the REMOTE CONTROL UNIT.
4.6.2 SERVICE MODE ITEMS
In general, basic setting (adjustments) items or verifications are performed in the SERVICE MODE.
4.6.3 HOW TO ENTER THE SERVICE MODE
(1) Set to 0 minutes using the [SLEEP TIMER] key.
(2) Press the [VIDEO STATUS] key and [DISPLAY] key
simultaneously while “0_MIN” is displayed, then enter the
SERVICE MODE.
NOTE:
Before entering the SERVICE MODE, confirm that the setting
of TV/CATV switch of the REMOTE CONTROL UNIT is at the
"TV" side and the setting of VCR/DVD switch is at the "VCR"
side. If the switches have not been properly set, you cannot
enter the SERVICE MODE.
4.6.4 HOW TO STORE OF SETTING VALUE
The setting value will be stored automatically when release the
REMOTE CONTROL UNIT keys
4.6.5 HOW TO EXIT THE SERVICE MODE
Press the [EXIT] key to exit the SERVICE MODE.
1. V/C (S) This sets the setting values of the VIDEO circuit.
2. DEF (D) This sets the setting values of the DEFLECTION circuit.
3. SOUND (A) This sets the setting values of the AUDIO circuit.
4. OTHERS (F) This sets the setting values of the factory settings. [Do not adjust]
6. 3L Y/C(LYC) This sets the setting values of the 3 line YC separation control circuit. [Do not adjust]
7. LOW LIGHT This sets the setting values of the WHITE BALANCE (LOW LIGHT) control circuit.
8. HIGH LIGHT This sets the setting values of the WHITE BALANCE (HIGH LIGHT) control circuit.
9. VCO This sets the setting values of the VCO control circuit. [Do not adjust]
11. I2C BUS This sets the setting values of the I2C BUS control circuit. [Do not adjust]
12. SYSTEM(SYS) This sets the setting values of the system control circuit. [Do not adjust]
SERVICE MODE SELECT KEY
123
456
789
0
VIDEO
STATUS
POWER
DISPLAY
MUTING
CHANNEL
PLAY
STOP
TV VCR
POWER
VCR CONTROL
C.C.
MENU EXIT
GAME
SLEEP INPUT
100
RETURN
CH
VOL VOL
CH
REW FF
REC
PAUSE
RM-C203G
NUMBER
DISPLAY
VOL-
MENU
VIDEO STATUS POWER
SLEEP TIMER
CH+
VOL+
CH-
EXIT

1-16 (No.YA257)
4.6.6 SERVICE MODE SETTING
1. V/C, 2. DEF
• Press [CH+] / [CH-] key
For scrolling up/down the adjustment item.
• Press [VOL+] / [VOL-] key
For scrolling up/down the data values.
NOTE:
The setting value will be stored automatically when release
the REMOTE CONTROL UNIT keys.
(1) INPUT SIGNAL
(2) ASPECT
(3) VIDEO STATUS
(4) COLOR TEMPERATURE
3. SOUND (A)
• Press [CH+] / [CH-] key
For scrolling up/down the adjustment item.
• Press [VOL+] / [VOL-] key
For scrolling up/down the data values.
NOTE:
The setting value will be stored automatically when release
the REMOTE CONTROL UNIT keys.
7. LOW LIGHT
The settings for WHITE BALANCE(LOW LIGHT) control
circuit.
NOTE:
The setting value will be stored automatically when release
the REMOTE CONTROL UNIT keys.
8. HIGH LIGHT
The settings for WHITE BALANCE(HIGH LIGHT) control
circuit.
NOTE:
The setting value will be stored automatically when release
the REMOTE CONTROL UNIT keys.
RF : Antenna input
COMP : External (Component) input
EXT : External (S / Composite) input
4 : 3 : 4 : 3 screen mode
STD : STANDARD
THEA : SPORTS
HIGH : White balance high mode
LOW : White balance low mode
RF 4 : 3 STD LOW
SETTING NO.
INPUT
SIGNAL
A
SPECT
SETTING ITEM
SETTING VALUE
VIDEO
STATUS
COLOR
TEMPERATURE
SETTING NO.
SETTING ITEM
SETTING VALUE
A01 IN LEVEL
BRIGHT
G CUTOFF B CUTOFF
R CUTOFF
SETTING VALUE
SETTING VALUESETTING ITEM
B DRIVER DRIVE
SETTING VALUE

(No.YA257)1-17
4.7 INITIAL SETTING VALUE OF SERVICE MODE
(1) Adjustment of the SERVICE MODE is made on the basis of the initial setting values ; however, the new setting values which set
the screen in its optimum condition may differ from the initial setting.
(2) Do not change the initial setting values of the setting items NOT LISTED IN ADJUSTMENT PROCEDURE.
(3) --- : This mark described in each table shows "Cannot adjust it."
4.7.1 [1.V/C(S)]
No. Setting
item
Variable
range
Initial setting value
AV-27CF36/S
AV-27CF36/R
AV-27SF36/S
AV-27SF36/R
RF EXTERNAL
(
S / COMPOSITE
)
EXTERNAL
(COMPONENT)
STANDARD SPORTS STANDARD
S01 BRIGHT 0 - 127 64 --- --- ---
S02 PICTURE 0 - 127 55 --- --- ---
S03 COLOR 0 - 127 48 --- --- 48
S04 TINT 0 - 127 50 --- --- 72
S05 DETAIL 0 - 63 35 --- 40 40
S06 BRIGHT+- -32 - +32 --- +1 +4 -4
S07 PICT+- -32 - +32 --- -7 +3 +3
S08 COLOR+- -32 - +32 --- -3 -3 ---
S09 TINT+- -32 - +32 --- -3 +14 ---
S10 DETAIL+- -32 - +32 --- ±0 --- ---
No. Setting
item
Variable
range
Initial setting value
AV-32CF36/Y
AV-32SF36/Y
RF EXTERNAL
(
S / COMPOSITE
)
EXTERNAL
(COMPONENT)
STANDARD SPORTS STANDARD
S01 BRIGHT 0 ~ 127 64 --- --- ---
S02 PICTURE 0 ~ 127 55 --- --- ---
S03 COLOR 0 ~ 127 45 --- --- 43
S04 TINT 0 ~ 127 58 --- --- 70
S05 DETAIL 0 ~ 63 35 --- 40 40
S06 BRIGHT+- -32 ~ +32 --- +3 -2 -2
S07 PICT+- -32 ~ +32 --- -7 +2 +2
S08 COLOR+- -32 ~ +32 --- -3 ±0 ---
S09 TINT+- -32 ~ +32 --- -3 +6 ---
S10 DETAIL+- -32 ~ +32 --- ±0 --- ---

1-18 (No.YA257)
No. Setting
item
Variable
range
Initial setting value
AV-32CF36/Z
AV-32SF36/Z
RF EXTERNAL
(
S / COMPOSITE
)
EXTERNAL
(COMPONENT)
STANDARD SPORTS STANDARD
S01 BRIGHT 0 ~ 127 64 --- --- ---
S02 PICTURE 0 ~ 127 50 --- --- ---
S03 COLOR 0 ~ 127 45 --- --- 45
S04 TINT 0 ~ 127 56 --- --- 70
S05 DETAIL 0 ~ 63 35 --- 40 40
S06 BRIGHT+- -32 ~ +32 --- +3 -2 -3
S07 PICT+- -32 ~ +32 --- -7 +2 ±0
S08 COLOR+- -32 ~ +32 --- -3 -1 ---
S09 TINT+- -32 ~ +32 --- -3 +14 ---
S10 DETAIL+- -32 ~ +32 --- ±0 --- ---
No. Setting
item
Variable
range
Initial setting value
AV-27CF36/S
AV-27CF36/R
AV-27SF36/S
AV-27SF36/R
RF / EXTERNAL (S / COMPOSITE) EXTERNAL (COMPONENT)
STANDARD SPORTS STANDARD SPORTS
LOW HIGH LOW HIGH LOW HIGH LOW HIGH
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 -5 --- --- ---
S17 G CUT +- -128 ~ +127 --- ±0 ±0 ±0 ±0 --- --- ---
S18 B CUT +- -128 ~ +127 --- ±0 ±0 ±0 -6 --- --- ---
S19 R DRV +- -128 ~ +127 --- +5 +13 +7 ±0 --- --- ---
S20 B DRV +- -128 ~ +127 --- +6 -25 -9 ±0 --- --- ---
S21NTSCMAT0~333112211
S22 BLACK ST 0 ~ 3 2 --- 2 --- --- --- --- ---
S23 DC REST 0 ~ 1 1 --- 1 --- --- --- --- ---
S24 DCRSW 0 ~ 1 1 --- 1 --- --- --- --- ---

(No.YA257)1-19
No. Setting
item
Variable
range
Initial setting value
AV-32CF36/Y
AV-32SF36/Y
RF / EXTERNAL (S / COMPOSITE) EXTERNAL (COMPONENT)
STANDARD SPORTS STANDARD SPORTS
LOW HIGH LOW HIGH LOW HIGH LOW HIGH
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 ±0 --- --- ---
S17 G CUT +- -128 ~ +127 --- ±0 ±0 ±0 ±0 --- --- ---
S18 B CUT +- -128 ~ +127 --- ±0 ±0 ±0 ±0 --- --- ---
S19 R DRV +- -128 ~ +127 --- +5 +13 +7 ±0 --- --- ---
S20 B DRV +- -128 ~ +127 --- +6 -25 -9 ±0 --- --- ---
S21NTSCMAT0~333112211
S22 BLACK ST 0 ~ 3 3 --- 2 --- --- --- --- ---
S23 DC REST 0 ~ 1 1 --- 1 --- --- --- --- ---
S24 DCRSW 0 ~ 1 0 --- 0 --- --- --- --- ---
No. Setting
item
Variable
range
Initial setting value
AV-32CF36/Z
AV-32SF36/Z
RF / EXTERNAL (S / COMPOSITE) EXTERNAL (COMPONENT)
STANDARD SPORTS STANDARD SPORTS
LOW HIGH LOW HIGH LOW HIGH LOW HIGH
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 ±0 --- --- ---
S17 G CUT +- -128 ~ +127 --- ±0 ±0 ±0 ±0 --- --- ---
S18 B CUT +- -128 ~ +127 --- ±0 ±0 ±0 ±0 --- --- ---
S19 R DRV +- -128 ~ +127 --- +5 +13 +7 ±0 --- --- ---
S20 B DRV +- -128 ~ +127 --- +6 -25 -9 ±0 --- --- ---
S21NTSCMAT0~333112211
S22 BLACK ST 0 ~ 3 2 --- 2 --- --- --- --- ---
S23 DC REST 0 ~ 1 1 --- 1 --- --- --- --- ---
S24 DCRSW 0 ~ 1 1 --- 1 --- --- --- --- ---

1-20 (No.YA257)
No. Setting
item
Variable
range
Initial setting value
RF
EXTERNAL (S / COMPOSITE)
EXTERNAL (COMPONENT)
S25 ASY SHRP 0 ~ 7 4 4 4
S26 BPF F0 0 ~ 1 0 0 ---
S27 KILR OFF 0 ~ 1 0 0 ---
S28 KILR SEN 0 ~ 1 1 1 ---
No. Setting
item
Variable
range
Initial setting value
AV-27CF36/S
AV-27CF36/R
AV-27SF36/S
AV-27SF36/R
AV-32CF36/Y
AV-32CF36/Z
AV-32SF36/Y
AV-32SF36/Z
S29 RGB MUTE 0 ~ 1 0 0
S30 BLUE B 0 ~ 1 0 0
S31 VIDEO SW 0 ~ 3 3 3
S32 CMP ABCL 0 ~ 1 0 0
S33 OSD ABL 0 ~ 1 0 0
S34 OSD CONT 0 ~ 63 7 8
S35 SUB CONT 0 ~ 15 5 5
S36 ABL GAIN 0 ~ 3 0 0
S37 ABL PNT 0 ~ 3 3 3
S38 Y GAMMA 0 ~ 3 1 1
S39 Y MUTE 0 ~ 1 0 0
S40 SVM GAIN 0 ~ 3 3 3
S41 SVM PH 0 ~ 3 1 2
S42 WPL 0 ~ 1 0 0
S43 COL GMM 0 ~ 1 0 0
S44 V1 GAIN 0 ~ 7 4 4
S45 VMOFF DE -128 ~ +127 ±3 ±3
S46 APC CLK 0 ~ 1 1 1
S47 PIP ADJ 0 ~ 15 4 8
This manual suits for next models
11
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