JVC InteriArt AV-28R47SK User manual

SERVICE MANUAL
COPYRIGHT © 2004 VICTOR COMPANY OF JAPAN, LIMITED No.YA061
2004/3
COLOR TELEVISION
YA06120043
AV-28R47SK,
AV-32R47SK
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
1
4
7
2
5
8
0
3
6
9
P
AV
TV OK
MENU
P
TV
F.T/L
BASIC CHASSIS
JW

1-2 (No.YA061)
SPECIFICATION
Design & specifications are subject to change without notice.
Items Contents
AV-28R47SK AV-32R47SK
Dimensions ( W ×H ×D ) 76.2cm ×52.8cm ×49.3cm 86.4cm ×58.7cm ×55.0cm
Mass 39.0kg 53.0kg
TV RF System CCIR ( I )
Colour System PAL
NTSC3.58 / NTSC4.43 (Only EXT mode)
Stereo System NICAM ( I )
Receiving Frequency UHF 470MHz - 862MHz
Intermediate
Frequency
VIF
SIF
38.9MHz ( I )
32.9MHz (6.0MHz :I)
Colour Sub
Carrier Frequency
PAL
NTSC
4.43MHz
3.58MHz / 4.43MHz
Teletext System FLOF (Fastext level 2.5)
WST(Standard system)
Power Input AC 220V~AC240V, 50Hz
Power Consumption 115W
Standby : 2.7W
Picture Tube Visible size : 66cm [measured diagonally]
(H : 58.3cm ×V : 33.0cm)
Visible size : 76cm [measured diagonally]
(H : 67.4cm ×V : 38.4cm)
High Voltage 31.0kV (+1kV / -1.5kV) (at zero beam current)
Speaker MAIN : 6.5cm ×13cm oval type ×2
CENTER : 4cm ×16cm oval type ×1
Audio Power Output MAIN : 10W + 10W
CENTER : 10W
Aerial Input Terminal 75 Ωunbalanced, coaxial
EXT-1 / EXT-2 / EXT-3
(Input / Output)
21-pin Euro connector (SCART socket ×3)
EXT-4 Video
Audio
1V(p-p) positive, negative sync provided, 75Ω, RCA pin jack ×1
500mV(rms) (-4dBs), high impedance, RCA pin jack ×2
Audio Out (variable) 0 - 1000V(rms), low impedance, RCA pin jack ×2
Surround Rear Terminal 7.5W + 7.5W, 8 Ω
Headphone Jack Stereo mini jack, Ø3.5mm ×1
Remote Control Unit RM-C1502-1C
(AA/R6 dry cell battery ×2)
Woofer Unit Dimensions
( W ×H ×D )
19.2cm ×38.8cm ×11.1cm
Mass 2kg
Speaker 13cm round type ×1
Audio Power Output 18W
This product is manufactured under license from Dolby Laboratories Licensing Corporation.
"Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.

(No.YA061)1-3
SECTION 1
PRECAUTION
1.1 SAFETY PRECAUTIONS
(1) The design of this product contains special hardware and 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 product 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 product have special safety-related characteristics. These characteristics are often
not evident from visual inspection nor can the protection afforded by them necessary 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 the 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) The leads in the products are routed and dressed with ties, clamps, tubing’s, barriers and the like to be separated from live parts,
high temperature parts, moving parts and / or sharp edges for the prevention of electric shock and fire hazard. When service is
required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to
normal, after re-assembling.
WARNING
(1) The equipment has been designed and manufactured to meet international safety standards.
(2) It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
(3) Repairs must be made in accordance with the relevant safety standards.
(4) It is essential that safety critical components are replaced by approved parts.
(5) If mains voltage selector is provided, check setting for local voltage.

1-4 (No.YA061)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES
• New chassis design enable use of an interactive on screen
control.
• The TELETEXT SYSTEM has a built-in FASTEXT (UK
system) and WST (world standard system) system.
• Because this TV unit corresponds to multiplex broadcast,
users can enjoy music programs and sporting events with live
realism. In addition, BILINGUAL programs can be heard in
their original language.
• Users can make VCR dubbing of picture and sound by
controlling the AV selector to select an optional source at the
EXT-2 output.
2.2 21-pin Euro connector (SCART) : EXT-1/EXT-2/EXT-3
(P-P= Peak to Peak, B-W= Blanking to white peak)
2.3 MAIN DIFFERENCE LIST
Pin No. Signal designation Matching value EXT-1 EXT-2 EXT-3
1 AUDIO R output 500mV(rms) (Nominal), Low impedance Used (TV OUT) Used (LINE OUT) Not used
2 AUDIO R input 500mV(rms) (Nominal), High impedance Used (R1) Used (R2) Used (R3)
3 AUDIO L output 500mV(rms) (Nominal), Low impedance Used (TV OUT) Used (LINE OUT) Not used
4 AUDIO GND Used Used Used
5 GND (B) Used Used Used
6 AUDIO L input 500mV(rms) (Nominal), High impedance Used (L1) Used (L2) Used (L3)
7 B input 700mV(B-W), 75ΩUsed Used Not used
8FUNCTION SW
(SLOW SW)
Low : 0V-3V
High : 8V-12V, High impedance Used Used Used
9 GND (G) Used Used Used
10 SCL / T-V LINK Not used Used
(SCL2 / TV-LINK) Not used
11 G input 700mV(B-W), 75ΩUsed Used Not used
12 SDA Not used Used (SDA2) Not used
13 GND (R) Used Used Used
14 GND (YS) Used Not used Not used
15 R / C input R : 700mV(B-W), 75Ω
C : 300mV(P-P), 75ΩUsed (R) Used (C2/R) Used (C3)
16 Ys input (FAST SW) Low : 0V-0.4V, High : 1V-3V, 75ΩUsed Used Not used
17 GND (VIDEO output) Used Used Used
18 GND (VIDEO input) Used Used Used
19 VIDEO output 1V(P-P) (Negative sync), 75ΩUsed (TV OUT) Used (LINE OUT) Not used
20 VIDEO / Y input 1V(P-P) (Negative sync), 75ΩUsed Used Used
21 COMMON GND Used Used Used
Item AV-28R47SK AV-32R47SK
PICTURE TILT NO YES
20 18 16 14 12 10 8 6 4 2
21 19 17 15 13 11 9 7 5 3 1
[Pin assignment]

(No.YA061)1-5
2.4 TECHNINAL 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 VssP2 -- GND 65 SVM O Scan velocity modulation
2 VssC4 -- GND 66 FbiSo I H pulse (Flyback pulse)
3 V1.8C4 I 1.8V 67 Hout O H drive
4 V3.3A3 I 3.3V 68 VssComb -- GND
5 VrefP_Sdac I 3.3V 69 V5Comb I 5V for comb filter
6 VrefN_Sdac -- GND 70 Vin/R2/Pr I EXT-1 Y
7 VrefP_Sdac I 3.3V 71 Uin/B2/Pb I EXT-1 B-Y
8 VrefN_Sdac -- GND 72 Yin/G2/Y I EXT-1 R-Y
9 VrefP_Sdac I 3.3V 73 Ysync I Y for SyncSep
10 XtalIn I System clock(4MHz) 74 Yout O Y(for 73pin)
11 XtalOut O System clock(4MHz) 75 Uout/INSSW2 I Ys(for EXT-1 Y/R-Y/B-Y insertion)
12 VssA1 -- GND 76 Vout/Swo1 -- NC
13 Vguard I CRT NECK protection 77 INSSW3 I Ys(for EXT-2 Y/R-Y/B-Y insertion)
14 DecDig -- 1.8V 78 R3/Pr I EXT-2 R-Y
15 V5P1 I 5V 79 G3/Y I EXT-2 Y
16 Phi2 -- Not used 80 B3/Pb I EXT-2 B-Y
17 Phi1 -- Not used 81 Gnd3 -- GND
18 Gnd1 -- GND 82 V5P3 I 5V
19 SecPll -- Not used 83 BCL I Auto Beam / contrast
20 Dec8G -- Not used 84 BLKIN I Black current input (For Auto white balance)
21 Ewd/Avl O Parabola wave 85 Rout O Red (for CRT)
22 Vdb O V. Drive(-) 86 Gout O Green (for CRT)
23 Vda O V. Drive(+)(For side pin) 87 Bout O Blue (for CRT)
24 Vif1 I IF 88 V3.3A1 I 3.3V
25 Vif2 I IF 89 RefAdN -- Not used
26 Vsc -- Not used 90 V3.3RefAdP -- Not used
27 Iref -- Not used 91 RefAd -- Not used
28 GndIF -- GND 92 GndA -- GND
29 Sif1 I SIF 93 V1.8A I 1.8V
30 Sif2 I SIF 94 V3.3A2 I 3.3V
31 Agc O AGC 95 VssAD -- GND
32 EHT I HV change control 96 V1.8ADC I 1.8V
33 Ssif/RefIn/Avl/RefOut O L'/Other SW [L':H] 97 IntO I Remote control
34 AudoIn5L I Audio (Left) 98 P10/Int1 I AV_LINK control
35 AudioIn5R I Audio (Right) 99 P11/TO O AV_LINK control
36 AudOutSL O Audio (Left) 100 V1.8C2 I 1.8V
37 AudOutSR O Audio (Right) 101 VssC2 -- GND
38 DecsDem -- Not used 102 P04/I2SWs O I2S bus (WS) for DSP
39 QssO/AmO/AudeEm -- Not used 103 P03/I2SClk I I2S bus (clock) for DAC
40 Gnd2 -- GND 104 P02/I2SDo2 I/O I2S bus (Dout) for audio
41 PllIf -- Not used 105 P01/I2SDo1 O Reset for DAC
42 SifAgc -- Not used 106 P00/I2SDI1 I Head phone connection detection [Connect : L]
43 IfVo/FmRo/DvbO O Composite video detect 107 P13/T1 O Main power control [ON : H]
44 FmRo/DvbO -- Not used 108 SCL1 O I2C bus (clock) for AV SW, TUNER, DOLBY, VOLUME
45 V8AudioSwitches I 8V 109 SDA1 I/O I2C bus (data) for AV SW, TUNER, DOLBY, VOLUME
46 AgcSsif -- Not used 110 V3.3P -- GND
47 V5P2 I 5V 111 P20/TPwm O ROTATION
48 SVO/IfVo/Cvbsl -- Not used 112 P21/Pwm0 O S-CORRECTION CONTROL(PANORAMIC)
49 Audio4InL -- Not used 113 P22/Pwm1 O Audio muting [Muting : L]
50 Audio4InR -- Not used 114 P23/Pwm2 O Audio muting [Muting : H]
51 Y4/Cvbs4 I Composite video /Y 115 P30/Adc0 I Protection detection for Low B short [Detect : H]
52 C4 I Chroma 116 P31/Adc1 O Lighting for POWER LED [ON : Soft RED]
53 Audio2InL -- Not used 117 V1.8C1 I 1.8V
54 Audio2InR -- Not used 118 DecV1V8 I 1.8V
55 Cvbs2/Y -- Not used 119 P32/Adc2 I Key scan front control
56 Audio3InL -- Not used 120 P33/Adc3 I AGC
57 Audio3InR -- Not used 121 VssC1+P1 -- GND
58 Y3/Cvbs -- Not used 122 P24/PW3 -- Not used
59 C3 -- Not used 123 P25/PWM4 O RESET for MICOM
60 AudOutLsL -- Not used 124 V1.8C3 I 1.8V
61 AudOutLsR -- Not used 125 VssC3 -- GND
62 AudOutHpL -- Not used 126 P12/Int2 I Main power detection [ON:H]
63 AudOutHpR -- Not used 127 P14/RX I/O I2C bus (data) for generally
64 CVBSO/PIP -- Not used 128 P15/TX O I2C bus (clock) for generally

1-6 (No.YA061)
SECTION 3
DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE
3.1.1 REMOVING THE REAR COVER
(1) Unplug the power cord.
(2) Remove the 13 screws [A] as shown in the Fig. 3.
(3) Withdraw the REAR COVER toward you.
3.1.2 REMOVING THE SIDE CONTROL JACK ASS'Y
• Remove the REAR COVER.
(1) Remove the 1 screw [B] as shown in the Fig. 3.
(2) Slightly shift the SIDE CONTROL JACK ASS'Y to rear side
and remove the 2 claws under the SIDE CONTROL JACK
ASS'Y.
(3) Disconnect the connector [CN810F] , [CN810F] and
[CN810S] as shown Fig. 3.
3.1.3 REMOVING THE SIDE CONTROL PWB
• Remove the REAR COVER.
• Remove the SIDE CONTROL JACK ASSY.
(1) Remove the 2 screws [C] as shown in Fig. 3.
(2) Remove the 2 claws [D] from back side of the SIDE
CONTRL JACK ASS'Y.
(3) Pull out the SIDE CONTROL PWB.
3.1.4 REMOVING THE CHASSIS
• Remove the REAR COVER.
(1) Slightly raise the both sides of the chassis by hand and
remove the 2 claws under the both sides of the CHASSIS
from the front cabinet.
(2) Withdraw the CHASSIS backward.
(If necessary, take off the wire clamp, connectors etc.)
3.1.5 REMOVING THE POWER & DEF. PWB
• Remove the REAR COVER.
• Remove the CHASSIS.
(1) Remove the 3 screws [E] as shown in Fig. 3.
(2) Remove the POWER & DEF. PWB upper.
(If necessary, take off the wire clamp, connectors etc.)
3.1.6 REMOVING THE AV TERMINAL BOARD
• Remove the REAR COVER.
(1) As first, expand the lever [K] with the SUB WOOFER
connector, and pull it out of connector jack as shown in Fig. 2.
(2) Remove the 3 screws [F] as shown in the Fig. 3.
(3) Remove the 2 claws [G] under the CHASSIS as shown in
Fig. 1.
(4) Remove the AV TERMINAL BOARD slightly in the
direction of arrow [H] as shown in Fig. 1.
3.1.7 REMOVING THE SPEAKER GRIL
• Remove the REAR COVER.
(1) Remove the 8 screws [J] as show in Fig. 3.
(2) Remove the SPEAKER GRIL.
3.1.8 REMOVING THE MAIN SPEAKER
• Remove the REAR COVER.
(1) Remove the 2 screws [L] as show in Fig. 3.
(2) Remove the MAIN SPEAKER.
(3) Follow the same steps when removing the other hand
MAIN SPEAKER.
3.1.9 REMOVING THE CENTER SPEAKER
• Remove the REAR COVER.
• Remove the CHASSIS.
(1) Remove the 4 screws [M] as show in Fig. 3.
(2) Remove the SIDE SPEAKER.
3.1.10 REMOVING THE SPACER
• Remove the REAR COVER
(1) Remove the 3 screws [N] as show in Fig. 3.
(2) Remove the SPACER.
3.1.11 CHECKING THE PW BOARD
• To check the back side of the PW Board.
(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 PW board.
3.1.12 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.
Fig.1
Fig.2
AV SW PWB
G
H
G
AV
TERMINAL
BOARD
AV TERMINAL BOARD
WOOFER UNIT CORD
K
CONNECTOR for WOOFER UNIT
K

(No.YA061)1-7
Fig.3
SIDE CONTROL JACK ASS'Y
CONTROL
BASE
FRONT CONTROL
PWB
D
CC
B
J
CN810K
CN810F
CN810S
SPEAKER GRIL
FRONT CABINET
CRT SOCKET
PWB
MAIN SPEAKER
CENTER
SPEAKER
POWER & DEF PWB
E
F
A
L
L
N
N
REAR COVER
CHASSIS BASE
SPACER
AV JACK PWB
AV TERMINAL
BOARD
CLAW
CLAW
MAIN PWB
DOLBY PWB
POWER CORD

1-8 (No.YA061)
3.1.13 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. 4).
(2) While keeping the surface of CRT down, mount the TV set
on the CRT change table balanced will as shown in Fig. 4.
(3) Remove 4 screws marked by arrows with a box type
screwdriver as shown in Fig. 5.
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. 6.
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.4
Fig.5
Fig.6
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.7. Wipe around the anode button with clean and dry cloth. (Fig.7) 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.8)
Silicon grease product No. KS - 650N
Fig.7 Fig.8
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.YA061)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 from the
AC outlet.
2. Replace the memory IC
Be sure to use the memory IC written with the initial setting
values.
3. Power on
Connect the power plug to the AC outlet and switch on the
power.
4. System constant check and setting
* It must not adjust without signal.
(1) Press the [INFORMATION] key and the [MUTING] key of
the REMOTE CONTROL UNIT simultaneously.
(2) The SERVICE MENU screen of Fig. 1 will be displayed.
(3) While the SERVICE MENU is displayed, press the
[INFORMATION] key and [MUTING] key simultaneously,
and the SYSTEM CONSTANT SET screen of Fig. 2 will
be displayed.
(4) Refer to the "SYSTEM CONSTANT SET" , and check
the setting items. Where these differ, select the addres
with the [FUNCTION (UP/ DOWN)] key and adjust it with
the [FUNCTION (RIGHT/ LEFT)] keys. (The letter of the
selected item is displayed in yellow.)
(5) A setup will become effective if the main power is shut off.
5. Receiving channel setting
Refer to the OPERATING INSTRUCTIONS and set the
receive channels (Channels Preset) as described.
6. User settings
Check the user setting items according to the given in page
later.
Where these do not agree, refer to the OPERATING
INSTRUCTIONS and set the items as described.
7. SERVICE MENU setting
Verify what to set in the SERVICE MENU, and set whatever is
necessary (Fig.1). Refer to the SERVICE ADJUSTMENT for
setting.
Fig.1
Fig.2
3.2.2 SYSTEM CONSTANT SETTING
SERVICE MENU
1. IF 2. V/C
3. AUDIO 4. DEF
5. VSM PRESET 6. VPS
7. SHIPPING (OFF)
MODEL=JW EURO (XXXXX)
EEP EDIT (LAST MEMORY)
TOP ADDRESS=000H
00 01 02 03 04 05 06 07
8F 00 FE FF FF FF FF FF
08 09 0A 0B 0C 0D 0E 0F
FF 01 BB FC 1F F9 FF FF
Do not adjust
Address
Setting data
Names of key
INFORMATION
MUTING
FUNCTION UP/DOWN
MENU
FUNCTION -/+
key
OK
NAME OF REMOTE CONTROL KEY
Address Setting data
AV-28R47SK AV-32R47SK
00 8F 9F
01 02 02

1-10 (No.YA061)
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
(2) SOUND
(3) FEATURES
(4) SET UP
Setting item Setting position
POWER Off
CHANNEL PR1
VOLUME 10
Setting item Setting position
CHANNEL PR1
VOLUME 10
ZOOM PANORAMIC
SURROUND OFF
Setting item Setting position
PICTURE MODE STANDARD
CONTRAST / BRIGHT
SHARP / COLOUR / HUE
Refer to [5. VSM PRESET]
COLOUR TEMP. NORMAL
FEATURES
AUTO VNR AUTO
COLOUR SYSTEM TV PAL
EXT AUTO
4:3 AUTO ASPECT PANORAMIC
Setting item Setting position
STEREO / I•II Stereo sound
BASS Centre
TREBLE Centre
BALANCE Centre
SUROUND MODE
DOLBY
PRO LOGIC II
TV SPEAKER L / C / R
LEFT MAX
CENTRE MAX
RIGHT MAX
LS MAX
RS MAX
WOOFER MAX
DISTANCE 0 METERS
Setting item Setting position
SLEEP TIMER OFF
BLUE BACK ON
CHILD LOCK Refer to OPERATION
INSTRUCTIONS
Setting item Setting position
AUTO PROGRAM TV channel automatically set
EDIT/MANUAL PRESET CH only
The others : BLANK
LANGUAGE ENGLISH
DECODER (EXT-2) OFF
EXT SETTING DUBBING EXT-1 →EXT-2
PICTURE TILT MIDDLE [AV-32R47SK]

(No.YA061)1-11
3.2.4 SERVICE MENU SETING ITEMS
Setting item Setting value Setting item Setting value
1. IF 1. VCO
2. DELAY POINT
5. VSM PRESET BRIGHT/SOFT/STD COOL/WARM/NOMAL
1.BRIGHT
2.CONT.
3.COLOUR
4.SHARP
5.HUE
1. R DRIVE
2. G DRIVE
3. B DRIVE
2. V / C 1.SCREEN
2.CUTOFF R / G
3.WDR R / G / B
4.BRIGHT
5.CONT.
6.COLOUR
7.HUE
8.BLACK OFFSET B-Y
9.SHARP
10.Y-DELAY
11.TINT DVD
12.RGB BLK
6.VPS
(Do not adjust)
VPS
PDC
WSS
SN
3. AUDIO
(Do not adjust)
1.DCX0 ADJ.
2. NICAM LOWER ERRLIM
3. NICAM UPPER ERRLIM
4. A2 ID THR
7.SHIPPING
(Do not adjust)
ON/OFF
4. DEF. 1.V-SHIFT
2.V-SLOPE
3.V-SIZE
4.H-CENT
5.H-SIZE
6.TRAPEZ
7.EW-PIN
8.COR-UP
9.COR-LOW
10.ANGLE
11.BOW
12.V-S.CR
13.V-LIN

1-12 (No.YA061)
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

(No.YA061)1-13
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
warning 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 ADJUSTMENT
Unless otherwise specified in the adjustment items, preset the
following functions with the REMOTE CONTROL UNIT.
4.3 MEASURING INSTRUMENT AND FIXTURES
(1) DC voltmeter (or digital voltmeter)
(2) Oscilloscope
(3) Signal generator
(Pattern generator : PAL / NTSC)
(4) Remote control unit
4.4 ADJUSTMENT ITEMS
CHECK ITEM
• B1 POWERSUPPLY check
• HIGH VOLTAGE check
• IF VCO check
FOCUS
• FOCUS adjustment
DEFLECTION CIRCUIT
• V. POSITION adjustment
• V. SIZE adjustment
• H. POSITION adjustment
• H. SIZE adjustment
• SIDE-PIN adjustment
• TRAPEZIUM adjustment
• CORNER adjustment
• ANGLE adjustment
• BOW adjustment
• V. S-SHAPE CORRECTION & V.LINEARITY adjustment
VIDEO CIRCUIT
• WHITE BALANCE adjustment
• SUB BRIGHT adjustment
• SUB CONTRAST adjustment
• SUB COLOUR-1 adjustment
• SUB COLOUR-2 adjustment
• SUB HUE-1 adjustment
• SUB HUE-2 adjustment
VSM PRESET SETTING
• VSM PRESET setting
Item Preset value
PICTURE MODE STANDARD
CONTRAST / BRIGHT / SHARP / COLOUR / HUE 00
COLOUR TEMP. NORMAL
AUTO VNR AUTO
BASS / TREBLE / BALANCE Centre
SURROUND OFF
ZOOM FULL
SLEEP TIMER OFF

1-14 (No.YA061)
4.5 ADJUSTMENT LOCATIONS
SPEAKER
CENTER
SPEAKER
SUB
WOOFER
FRONT
MAIN PWB
POWER&DEF PWB
RL
HV
K
B
K
F
S
F
X
W
W
IC941
CN004
CN003
TOP
CRT SOCKET PWB
TP-47B
E1
(SOLDER SIDE)
HVT
1
5
1 B1
2 N.C.
3 X-ray
4 X-ray
5 GND
AV JACK
PWB
CN001CN002
TUNER
DOLBY
PWB
AV-28R47SK
AV-32R47SK
CN009
S
SW
SC
IC702
TP-47G
TP-47R TP-E
RT
CN008
MEMORY
IC
CN3008
CN3009
SC
VM2
FOCUS1
FOCUS2
SCREEN
FOCUS1
SCREEN
TOP
SIDE CONTROL PWB
POWER CORD
POWER SW
FRONT
POWER LED
D8801
IC8851 F8901
FRONT CONTROL PWB
B

(No.YA061)1-15
4.6 BASIC OPERATION OF SERVICE MENU
4.6.1 TOOL OF SERVICE MENU OPERATION
Operate the SERVICE MENU with the REMOTE CONTROL UNIT.
4.6.2 SERVICE MENU ITEMS
With the SERVICE MENU, various adjustments can be made, and they are broadly classified in the following items of settings.
4.6.3 BASIC OPERATION OF SERVICE MENU
(1) HOW TO ENTER SERVICE MENU
Press the [INFORMATION] key and the [MUTING] key of the
REMOTE CONTROL UNIT simultaneously, and the SERVICE
MENU screen of Fig.1 will be displayed.
Fig.1
(2) SELECTION OF SUB MENU SCREEN
Press one of [1] - [5] keys of the REMOTE CONTROL UNIT
and select the SUB MENU SCREEN (See “SERVICE MENU
FLOW CHART”), form the SERVICE MENU.
Fig.2
(3) METHOD OF SETTING
z1.IF
[1.VCO] : It must not adjust without signal.
z2.V/C, 4.DEF AND 5.VSM PRESET.
z3.AUDIO, 6.VPS, and 7.SHIPPING.
[Do not setting]
(4) RELEASE OF SERVICE MENU
After completing the setting, return to the SERVICE MENU, then again press the [INFORMATION] key.
1.IF This mode adjusts the setting values of the IF circuit.
2.V/C This mode adjusts the setting values of the VIDEO circuit.
3.AUDIO This mode adjusts the setting values of the multiplicity AUDIO circuit. [Do not adjust]
4.DEF This mode adjusts the setting values of the DEFLECTION circuit for each aspect mode given below.
5.VSM PRESET This mode adjusts the initial setting values of COOL, NORMAL and WARM. (VSM : Video Status Memory)
6.VPS This mode shows the monitor of the VPS, PDC, WSS and SN. [Do not adjust]
7.SHIPPING(OFF) This mode is set at shipping. [Do not adjust]
SERVICE MENU
1. IF 2. V/C
3. AUDIO 4. DEF
5. VSM PRESET 6. VPS
7. SHIPPING (OFF)
Names of key
INFORMATION
MUTING
FUNCTION UP/DOWN
MENU
FUNCTION -/+
Key
OK
NAME OF REMOTE CONTROL KEY
Key Function
(1) [1] Select 1.IF
(2) [1] Select 1.VCO (CW)
Make sure that the arrow position between the ABOVE REF and BELOW REF.
(3) [INFORMATION] Return to the SERVICE MENU screen.
Key Function
(1) [2] / [3] / [4] / [5] Select one from 2.V/C, 4.DEF and 5.VSM PRESET.
(2) [FUNCTION UP / DOWN (/)] Select setting items.
(3) [FUNCTION -/+ (/)] Set (adjust) the setting values of the setting items.
(4) [OK] Memorize the setting value.(Before storing the setting values in memory, do not press
the CH, TV, POWER key if you do, the values will not be stored in memory.)
(5) [INFORMATION] Return to the SERVICE MENU screen.

1-16 (No.YA061)
4.6.4 SERVICE MENU FLOW CHART
SERVICE MENU
1. SCREEN
2. V/C
PAL
DEF FULL 50Hz
1. V-SHIFT
4. DEF
1. V-SHIFT
2. V-SLOPE
3. V-SIZE
4. H-CENT
5. H-SIZE
6. TRAPEZ
7. EW-PIN
8. COR-UP
9. COR-LO
10. ANGLE
11. BOW
12.V-S.CR
13.V-LIN
IF SERVICE MENU
1. VCO
2. DELAY POINT
SERVICE MENU
1. IF 2. V/C
3. AUDIO 4. DEF
5. VSM PRESET 6. VPS
7. SHIPPING (OFF)
1. DCX0 ADJ.
2. NICAM LOWER ERRLIM
3. NICAM UPPER ERRLIM
4. A2 ID THR
AUDIO
3. AUDIO
1. DCX0 ADJ. =
NOT NICAM
1.VCO1.IF
2.DELAY POINT
BRIGHT
STD
SOFT
5. VSM PRESET
VSM PRESET BRIGHT
1.BRIGHT
1. BRIGHT
2. CONT
3. COLOUR
4. SHARP
5. HUE
1. R DRIVE
2. G DRIVE
3. B DRIVE
Do not adjust
Do not adjust
PICTURE MODE
COOL
NORM
WARM
COLOR TEMP
1. SCREEN
2. CUTOFF R/G
3. WDR R/G/B
4. BRIGHT
5. CONTRAST
6. COLOUR
7. HUE
12. RGB BLK
8. BLACK OFFSET
9. SHARP
10. Y DELAY
11. TINT DVD
VCO (CW) ** , ** MHz
DELAY POINT
TOO HIGH
ABOVE REFERENCE
JUST REFERENCE
BELOW REFERENCE
TOO LOW
AGC TAKE OVER **
0002
0009
000A
HBC
WBC

(No.YA061)1-17
4.7 INITIAL SETTING VALUE OF SERVICE MENU
(1) Adjustment of the SERVICE MENU is made on the basis of the initial setting values. However, the new setting values which
displays on the screen in its optimum condition may differ from the initial setting value.
(2) Do not change the initial setting values of the items not listed in “ADJUSTMENT PROCEDURE”.
(3) “---” is impossible to adjust or not requirement to adjustment.
4.7.1 [2. V/C]
4.7.2 [3. AUDIO] [Do not adjust]
Setting item Variable range Setting value
PAL NTSC NTSC4.43 RGB
2. CUT OFF RED -63~+63 0 0 0 0
GREEN -63~+63 0 0 0 0
3. WDR RED -63~+63 0 0 0 0
GREEN -63~+63 0 0 0 0
BLUE -63~+63 0 0 0 0
4. BRIGHT -63~+63 0 0 0 0
5. CONTRAST -63~+63 -10 -10 -10 0
6. COLOUR -63~+63 0 0 0 0
7. HUE -63~+63 --- 0 0 ---
8. BLACK OFFSET B-Y 0~3 --- --- --- ---
Setting item Variable
range
Setting value
PAL NTSC NTSC4.43 RGB
RF VIDEO RF VIDEO RF VIDEO
9. SHARP -63~+63 +5 +5 +5 +5 +5 +5 +5
Setting item Variable
range
Setting value
PAL NTSC NTSC4.43 RGB
RF VIDEO S-VIDEO RF VIDEO S-VIDEO RF VIDEO S-VIDEO
10.YDELAY-63~+63+5+5+5+5+5+5+5+5+5+5
Setting item Variable
range
Setting value
PAL NTSC NTSC4.43 RGB
11. TINT DVD -63~+63 0 0 0 0
12. RGB BLK --- --- --- --- ---
Setting item Variable
range Setting value
1. DCXO ADJ. --- F0
2. NICAM LOWER ERRLIM 00H~FFH 6F
3. NICAM UPPER ERRLIM 00H~FFH E0
4. A2 ID THR 00H~FFH 00

1-18 (No.YA061)
4.7.3 [4. DEF]
4.7.4 [5. VSM PRESET]
Setting item Variable
range
Setting value
FULL PANORAMIC SUBTITLE 14:9 ZOOM REGULAR COMPRESS
50Hz 60Hz 50Hz 60Hz 50Hz 60Hz 50Hz 60Hz 50Hz 60Hz 50Hz 60Hz
1.V-SHIFT -32~+31 ±0 +3 +3 ±0 -12 ±0 ±0 ±0 ±0 ±0 ±0 ±0
2.V-SLOPE -32~+31 ±0±0±0±0 -4 ±0±0±0±0±0±0±0
3.V-SIZE -32~+31 ±0 -1 +5 ±0 +20 ±0 +14 ±0 ±0 ±0 -32 ±0
4.H-CENT -32~+31 +8 5 -2 ±0 ±0 ±0 ±0 ±0 ±0 ±0 +11 ±0
5.H-SIZE -32~+31 +18 ±0 +9 ±0 ±0 ±0 ±0 ±0 ±0 ±0 ±0 ±0
6.TRAPEZ -32~+31 -4 ±0 ±0 ±0 +2 ±0 ±0 ±0 ±0 ±0 ±0 ±0
7.EW-PIN -32~+31 -15 ±0 ±0 ±0 ±0 ±0 ±0 ±0 ±0 ±0 ±0 ±0
8.COR-UP -32~+31 ±0±0±0±0±0±0±0±0±0±0±0±0
9.COR-LO -32~+31 ±0±0±0±0+7±0±0±0±0±0±0±0
10.ANGLE -32~+31 ±0±0±0±0±0±0±0±0±0±0±0±0
11.BOW -32~+31 ±0±0±0±0±0±0±0±0±0±0±0±0
12.V.S-COR -32~+31-14±0+10±0+4±0±0±0±0±0±0±0
13.V.LIN -32~+31+3±0+6±0+8±0±0±0±0±0±0±0
Item Variable
range
Setting value
PICTURE MODE COLOUR TEMP.
BRIGHT STANDARD SOFT COOL NORMAL WARM
1.BRIGHT -16~+16 +0 +0 +0 --- --- ---
2.CONT -16~+16 +12 +10 +2 --- --- ---
3.COLOUR -16~+16 +6 +0 -2 --- --- ---
4.SHARP -16~+16 +0 +0 -2 --- --- ---
5.HUE -16~+16 +0 +0 +0 --- --- ---
1.R DRIVE -64~+64 --- --- --- -8 +7 +0
2.G DRIVE -64~+64 --- --- --- +0 +0 +0
3.B DRIVE -64~+64 --- --- --- +9 -6 +0

(No.YA061)1-19
4.8 ADJUSTMENT PROCEDURE
4.8.1 CHECK ITEM
Item Measuring
instrument Test point Adjustment part Description
B1 POWER
SUPPLY
check
Signal
generator
DC voltmeter
Remote
control unit
X connector
TP-91(B1)
TP-E
[POWER DEF
PWB]
[2.V/C]
12.RGB BLK
(1) Receive the any broadcast.
(2) Select 2. V/C from the SERVICE MENU.
(3) Select < 12. RGB BLK >.
(4) Press the [FUNCTION + ()] key to find the cut off
screen (Black screen).
(5) Connect a DC voltmeter to TP-91(B1) and TP-E.
(6) Make sure that the voltage is DC143V ± 2.0V.
(7) Press the [FUNCTION - ()] key to return to service
menu.
HIGH VOLTAGE
check
Signal
generator
HV voltmeter
Remote
control unit
CRT anode
Chassis GND
[2.V/C]
12.RGB BLK
(1) Receive the any broadcast.
(2) Select 2. V/C from the SERVICE MENU.
(3) Select < 12. RGB BLK >.
(4) Press the [FUNCTION + ()] key to find the cut off
screen (Black screen).
(5) Connect a HV voltmeter to CRT ANODE and
chassis GND.
(A ground side is connected previously)
(6) Make sure that the voltage is DC 31.0kV
(+1kV / -1.5kV).
(7) Press the [FUNCTION - ()] key to return to service
menu.
NOTE:
When removing a prove, an anode side is removed
previously.
IF VCO
check
Remote
control unit
[1.IF]
1.VCO
• Under normal conditions, no adjustment is required.
• It must not adjust without broadcast signal.
(1) Receive the any broadcast.
(2) Select 1.IF from the SERVICE MENU.
(3) Select < 1.VCO >.
(4) Check the ←(arrow) position between the ABOVE
REF. and BELOW REF.
1. VCO
2. DELAY POINT
IF SERVICE MENU
TOO HIGH
ABOVE REF
JUST REF
BELOW REF
TOO LOW
VCO(CW) **** MHz
Do not move

1-20 (No.YA061)
4.8.2 FOCUS
Item Measuring
instrument Test point Adjustment part Description
FOCUS
[AV-32R47SK]
Signal
generator
FOCUS 1 VR
FOCUS 2 VR
[In HVT]
(1) Receive the crosshatch signal.
(2) Set the ZOOM mode to FULL.
(3) By turning the FOCUS 2 VR, adjust the picture so
that the A part vertical line may become thinnest
(Fig.1) .
(4) By turning the FOCUS 1 VR, adjust the picture so
that the A part horizontal line may become uniform
at the line centre and its periphery (Fig.1) .
(5) Make sure that when the screen is darkened, the
lines remain in good focus.
Fig.1
FOCUS
[AV-28R47SK]
Signal
generator
FOCUS VR
[In HVT]
(1) Receive the crosshatch signal.
(2) Set the ZOOM mode to FULL.
(3) While looking at the screen, adjust the FOCUS VR
to the vertical and horizontal lines will be clear and
infine detail.
(4) Make sure that the picture is in focus even when the
screen gets darkened.
FOCUS 2
HVT
SCREEN
FOCUS 1
Vertical
line
Horizontal
line
finest and sharpest
as possible
A
HVT
SCREEN
FOCUS