SERVICE MANUAL
COLOUR TELEVISION
YA26020053
AV-32T5SP, AV-32T5SK,
AV-32T5SR, AV-32T5BR,
AV-32T5BK
BASIC CHASSIS
JW2
1
2
3
4
5
6
7
8
9
0
AV
MENU
P
TV OK
P
.T/L
F
TV
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
COPYRIGHT © 2005 Victor Company of Japan, Limited
No.YA260
2005/3
SPECIFICATION
Contents
Items
Dimensions ( W × H × D ) 86.4cm × 58.7cm × 55.0cm
Mass 52.0kg
TV RF System CCIR (I) CCIR (B/G, I, L)
Colour System PAL
NTSC3.58 / NTSC4.43 (Only EXT mode)
Stereo System NICAM (I) A2 (B/G) / NICAM (B/G, I, L)
Receiving
Frequency
Intermediate
Frequency
Colour Sub
Carrier Frequency
Teletext System FLOF (Fastext)
Power Input AC220V - AC240V, 50Hz
Power Consumption 110W, Standby : 2.7W
Picture Tube Visible size : 76cm [measured diagonally] (H : 67.4cm × V : 38.4cm)
High Voltage 31.0kV (+1kV / -1.5kV) (at zero beam current)
Speaker 13cm × 6.5cm oval type × 2
Audio Power Output 10W + 10W
Aerial Input Terminal 75Ω unbalanced, coaxial
EXT-1 / EXT-2 / EXT-3
(Input / Output)
EXT-4 (Input) Video
Headphone Jack Stereo mini jack (Ø3.5mm × 1)
Remote Control Unit RM-C1502 (AA/R6 dry cell battery × 2) [AV-32T5SK, AV-32T5SR, AV-32T5SP]
VHF --- 47MHz - 470MHz
UHF 470MHz - 862MHz
French
CATV
VIF 38.9MHz (I) 38.9MHz (B/G, I, L)
SIF 32.9MHz (6.0MHz :I) 33.4MHz (5.5MHz :B/G)
PAL 4.43MHz
SECAM --- 4.40625MHz / 4.25MHz
NTSC 3.58MHz / 4.43MHz
WST(Standard system)
21-pin Euro connector (SCART socket × 3)
1V(p-p) positive, negative sync provided, 75Ω, RCA pin jack × 1
Audio
500mV(rms) (-4dBs), high impedance, RCA pin jack × 2
RM-C1502B (AA/R6 dry cell battery × 2) [AV-32T5BK, AV-32T5BR]
AV-32T5SK
AV-32T5BK
AV-32T5SR
AV-32T5BR
PAL
SECAM
NTSC3.58 / NTSC4.43 (Only
EXT mode)
--- 116MHz - 172MHz
220MHz - 469MHz
33.9MHz (L')
32.9MHz ( 6.0MHz:I )
32.4MHz (6.5MHz :L)
TOP (German system)
FLOF (Fastext)
WST (Standard system)
AV-32T5SP
Design & specifications are subject to change without notice.
1-2 (No.YA260)
SECTION 1
PRECAUTION
1.1 SAFETY PRECAUTIONS [EXCEPT FOR UK]
(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) Don't short between the LIVE side ground and
ISOLATED (NEUTRAL) side ground or EARTH side
ground when repairing.
Some model's power circuit is partly different in the GND.
The difference of the GND is shown by the LIVE : ( ) side
GND, the ISOLATED (NEUTRAL) : ( ) side GND and
EARTH : ( ) side GND.
Don't short between the LIVE side GND and 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.
(5) 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).
(6) 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.
(7) Do not check high voltage by drawing an arc. Use a high
voltage meter or a high voltage probe with a VTVM.
Discharge the picture tube before attempting meter
connection, by connecting a clip lead to the ground frame
and connecting the other end of the lead through a 10kΩ
2W resistor to the anode button.
(8) 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.
(9) 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 3000V AC (r.m.s.) for a period of one second. (.
. . . Withstand a voltage of 1100V AC (r.m.s.) to an
appliance rated up to 120V, and 3000V AC (r.m.s.) to an
appliance rated 200V or more, for a period of one second.)
This method of test requires 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 1000
sensitivity in the following manner. Connect a 1500
Ω per volt or more
Ω
10W resistor paralleled by a 0.15µF AC-type capacitor
between an exposed metal part and a known good earth
ground (water pipe, etc.). Measure the AC voltage
across the resistor with the AC voltmeter. Move the
resistor connection to each exposed metal part,
particularly any exposed metal part having a return path
to the chassis, and measure the AC voltage across the
resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Any voltage measured must
not exceed 0.75V AC (r.m.s.). This corresponds to
0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.3V AC
(r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
AC VOLTMETER
(HAVING 1000 /V,
OR MORE SENSITIVITY)
0.15 F AC-TYPE
PLACE THIS PROBE
1500 10W
GOOD EARTH GROUND
ON EACH EXPOSED
ME TAL PAR T
(No.YA260)1-3
1.2 SAFETY PRECAUTIONS [FOR UK]
(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.YA260)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES
ZOOM
This function can change the screen size according to the
picture aspect ratio.
T-V LINK
When you have a T-V LINK compatible VCR connected to the
EXT-2 Terminal on the TV,it is easier to set up the VCR and to
view videos.
2.2 MAIN DIFFERENCE LIST
Item AV-32T5SP AV-32T5SK AV-32T5SR AV-32T5BR AV-32T5BK
CABINET COLOUR Silver ←←Black ←
POWER CORD EU 2-pin type UK 3-pin type ←←←
TEXT/CLOSED CAPTION FLOF, WST, TOP FLOF, WST ←←←
PICTURE & TEXT YES NO NO NO NO
STAND ASSY NO YES ←←←
REMOTE CONTROL UNIT RM-C1502 ←←RM-C1502B ←
MAIN PWB SJW-1011A-U2 SJW-1911A-U2 SJW-1011A-U2 ← SJW-1911A-U2
2.3 21-PIN EURO CONNECTOR (SCART) : EXT-1/EXT-2/EXT-3
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
4AUDIO GND UsedUsedUsed
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
FUNCTION SW
8
(SLOW SW)
9 GND (G) Used Used Used
10 SCL / T-V LINK Not used
11 G input 700mV
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
16 Ys input (FAST SW) Low : 0V-0.4V, High : 1V-3V, 75Ω Used Used Not used
17 GND (VIDEO output) Used Used Used
18 GND (VIDEO input) Used Used Used
19 VIDEO output 1V
20 VIDEO / Y input 1V
21 COMMON GND Used Used Used
Low : 0V-3V
High : 8V-12V, High impedance
R : 700mV
C : 300mV
(P-P)
(P-P)
, 75Ω Used Used Not used
(B-W)
, 75Ω Used Used Not used
(B-W)
, 75Ω
(B-W)
, 75Ω
(P-P)
(Negative sync), 75Ω Used (TV OUT) Used (LINE OUT) Not used
(Negative sync), 75Ω Used Used Used
PICTURE MODE
This function can adjust the picture settings automatically.
HYPER SOUND
You can enjoy sounds with a wider ambience.
Used Used Used
Used
(SCL2 / TV-LINK)
Used (R) Used (C2/R) Used (C3)
Not used
(P-P= Peak to Peak, B-W= Blanking to white peak)
[Pin assignment]
20 18 16 14 12 10 8 6 4 2
21 19 17 15 13 11 9 7 5 3 1
(No.YA260)1-5
2.4 TECHNINAL INFORMATION
2.4.1 MAIN MI-COM (CPU) PIN FUNCTION
Pin
No.
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 -- Not used
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 I 3.3V
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 REMOCON I Remote control
34 AudoIn5L I Not used 98 P10/Int1 I AV_LINK control
35 AudioIn5R I Not used 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 -- Not used
39 QssO/AmO/AudeEm -- Not used 103 P03/I2SClk -- Not used
40 Gnd2 -- GND 104 P02/I2SDo2 -- Not used
41 PllIf -- Not used 105 P01/I2SDo1 -- Not used
42 SifAgc -- Not used 106 HP_DET 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, VOLUME
45 V8AudioSwitches I 8V 109 SDA1 I/O I2C bus (data) for AV SW, TUNER, VOLUME
46 AgcSsif -- Not used 110 V3.3P I 3.3V
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 -- Not used
51 Y4/Cvbs4 I Composite video /Y 115 Protect 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 Key I Key scan front control
56 Audio3InL -- Not used 120 AGC 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 -- Not used
60 AudOutLsL -- Not used 124 V1.8C3 I 1.8V
61 AudOutLsR -- Not used 125 VssC3 -- GND
62 AudOutHpL -- Not used 126 Power DET 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
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 R-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 Y
9 VrefP_Sdac I 3.3V 73 Ysync I Y for SyncSep
Pin
No.
Pin name I/O Function
1-6 (No.YA260)
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], then 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].
(2) Slightly shift the SIDE CONTROL JACK ASS'Y to rear side
and remove the 1 claws under the SIDE CONTROL JACK
ASS'Y.
3.1.3 REMOVING THE SIDE CONTROL PWB
• Remove the REAR COVER.
• Remove the SIDE CONTROL JACK ASSY.
(1) Remove the 2 screws [C].
(2) Remove the 2 claws from back side of the SIDE CONTRL
JACK ASS'Y, then pull out the SIDE CONTROL PWB.
3.1.4 REMOVING THE CHASSIS BASE
• 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 CHASSI S
BASE from the front cabinet.
(2) Withdraw the CHASSIS backward.
(If necessary, take off the wire clamp, connectors etc.)
3.1.5 REMOVING THE AV TERMINAL BOARD
• Remove the REAR COVER.
(1) Remove the 2 screws [D].
(2) Remove the 2 claws under the CHASSIS, then remove the
AV TERMINAL BOARD.
3.1.6 REMOVING THE SPEAKER
• Remove the REAR COVER.
• Remove the CHASSIS BASE.
(1) Remove the 4 screws [E], then remove the SPEAKER.
(2) Follow the same steps when removing the other hand
MAIN SPEAKER.
3.1.7 CHECKING THE PW BOARD
• To check the back side of the PW Board.
(1) Pull out the CHASSIS BASE. (Refer to REMOVING THE
CHASSIS BASE).
(2) Erect the CHASSIS BASE 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 BASE, 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.YA260)1-7
SPEAKER
CRT SOCKET PWB
SPEAKER
E
FRONT CONTROL PWB
E
CONTROL BASE
POWER & DEF PWB
Claw
CHASSIS BASE
B
C
SIDE CONTROL PWB
Claw
SIDE CONTROL BASE
SIDE CONTROL JACK ASSY
REAR COVER
Claw
MAIN PWB
AV JACK PWB
POWER CORD
AV TERMINAL
BOARD
D
Claw
1-8 (No.YA260)
A
Fig.1
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
screwdriver 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.
CRT CHANGE TABLE
CLOTH
CRT
CHANGE
TABLE
Fig.2
CRT
Fig.3
APPROX.
35cm
BOX
TYPE
SCREW
DRIVER
CRT
CABINET
CRT
CHANGE TABLE
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
CRT
Anode button
Approx.
20mm (Do not
coat grease on
this section
Silicon grease
should be coated
by 5mm or more
from the outside
diameter of anode
cap.
Silicon grease
coating
Fig.5
Anode button
(No sticking of
silicon grease)
Fig.6
Coating position
of silicon grease
Anode cap
(No.YA260)1-9
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