Sony WEGA KLV 26HG2 User manual

LCD COLOR TV
SERVICE MANUAL AT2 CHASSIS
MODEL NAME REMOTE COMMANDER DESTINATION
9-965-976-01
KLV-26HG2 RM-Y1105 US/CND
(This manual is for units within S/N Range: 8,100,000 - 9,100,000 Only)
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
ORIGINAL MANUAL ISSUE DATE: 9/2004
REVISION DATE REVISION TYPE SUBJECT
9/2004 No revisions or updates are applicable at this time.

LCD COLOR TV
SERVICE MANUAL AT2 CHASSIS
MODEL NAME REMOTE COMMANDER DESTINATION
9-965-976-01
KLV-26HG2 RM-Y1105 US/CND
(This manual is for units within S/N Range: 8,100,000 - 9,100,000 Only)
KLV-26HG2
RM-Y1105

KLV-26HG2
KLV-26HG2
3
TABLE OF CONTENTS
SECTION TITLE PAGE SECTION TITLE PAGE
Specifications ................................................................................. 4
Warnings and Cautions .................................................................. 5
Safety Check-Out........................................................................... 6
SECTION 1: DISASSEMBLY................................................................. 7
1-1. Rear Cover and Stand Removal............................................ 7
1-2. Cabinet Assembly Removal................................................... 7
1-3. U1 Board Removal................................................................. 8
1-4. MS and MSB Board Removal................................................ 8
1-5. G1 Board Removal................................................................. 9
1-6. A1, TU and UD Board Removal............................................. 9
1-7. B Board Removal................................................................. 10
1-8. H1 and MSX Board Removal............................................... 10
1-9. H2 Board Removal................................................................11
1-10. H3 Board Removal...............................................................11
SECTION 2: ADJUSTMENTS ............................................................. 12
2-1. Setting the Service Adjustment Mode.................................. 12
2-2. White Balance Adjustments ................................................. 12
SECTION 3: DIAGRAMS..................................................................... 13
3-1. Circuit Boards Location........................................................ 13
3-2. Printed Wiring Boards and
Schematic Diagrams Information......................................... 14
3-3. Block Diagrams (1 of 6)........................................................ 15
Block Diagrams (2 of 6)........................................................ 16
Block Diagrams (3 of 6)........................................................ 17
Block Diagrams (4 of 6)........................................................ 18
Block Diagrams (5 of 6)........................................................ 19
Block Diagrams (6 of 6)........................................................ 20
3-4. Frame Diagrams ................................................................. 21
3-5. Schematics and Supporting Information ............................. 22
A1 Board Schematic Diagram (1 of 4).................................. 22
A1 Board Schematic Diagram (2 of 4).................................. 23
A1 Board Schematic Diagram (3 of 4).................................. 24
A1 Board Schematic Diagram (4 of 4).................................. 25
TU Board Schematic Diagram ............................................ 27
B Board Schematic Diagram (1 of 8) ................................... 28
B Board Schematic Diagram (2 of 8) ................................... 29
B Board Schematic Diagram (3 of 8) ................................... 30
B Board Schematic Diagram (4 of 8) ................................... 31
B Board Schematic Diagram (5 of 8) ................................... 32
B Board Schematic Diagram (6 of 8) ................................... 33
B Board Schematic Diagram (7 of 8) ................................... 34
B Board Schematic Diagram (8 of 8) ................................... 35
UD Board Schematic Diagram ............................................ 37
H1 Board Schematic Diagram ............................................. 39
H2 Board Schematic Diagram ............................................. 39
H3 Board Schematic Diagram ............................................. 40
U1 Board Schematic Diagram ............................................. 40
MS Board Schematic Diagram (1 of 3) ................................ 41
MS Board Schematic Diagram (2 of 3) ................................ 42
MS Board Schematic Diagram (3 of 3) ................................ 43
MSB Board Schematic Diagram ......................................... 45
MSX Board Schematic Diagram ......................................... 45
G1 Board Schematic Diagram ............................................ 46
3-6. Semiconductors ................................................................... 48
SECTION 4: EXPLODED VIEWS........................................................ 49
4-1. Cabinet Assembly and Stand Assembly............................... 49
4-2. Chassis ................................................................................ 50
4-3. Packing Materials................................................................. 51
SECTION 5: ELECTRICAL PARTS LIST........................................... 52

KLV-26HG2
KLV-26HG2
4
SPECIFICATIONS
Television system:
American TV Standard
Channel coverage:
VHF: 2-13/ UHF: 14-69/ CATV: 1-125
Antenna:
75-ohm external antenna terminal for VHF/UHF
Screen Size (measured diagonally):
26 inches
Panel System:
a-Si TFTActive Matrix LCD Panel
(Effective dots: more than 99.99%)
Display Resolution:
1280 dots (horizontal) x 768 lines (vertical)
Video 1/2 In:
S VIDEO IN (4-pin mini DIN):
Y: 1 Vp-p, 75 ohms unbalanced, sync negative
C: 0.286 Vp-p (Burst signal), 75ohms
VIDEO: 1 Vp-p, 75ohms unbalanced, sync negative
AUDIO: 500 mVrms (100% modulation)
Impedance:47 kilohms
Video 3 In:
Y, PB, PR(Component Video) IN:
Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative
P
B: 0.7 Vp-p, 75 ohms
P
R: 0.7 Vp-p, 75 ohms
Signal formal:
480i, 480p, 720p, 1080i
AUDIO: 500 mVrms (100% modulation)
Impedance:47 kilohms
Video 4 In:
DVI-HDTV:
1 terminal, 3.3V T.M.D.S., 50 ohms
The DVI-HDTV input terminal is compliant with
the EIA-861B standard and is not intended for use
with personal computers.
AUDIO: 500 mVrms (100% modulation)
Impedance:47 kilohms
Audio Out:
500 mVrms (100% modulation)
More than 500 mVrms at the maximum volume setting (Variable)
More than 500 mVrms (Fixed)
Headphones:
Stereo Minijack
Impedance: 16ohms
Speaker:
Full Range: 4.0 x 10.0 cm Oval
(1
9/16 x 3 15/16 inches) (2)
Tweeter: 2.5 cm (31/32 inches) (2)
Speaker Output:
4.0 W x 4.0 W
Power Requirements:
120V AC, 60 Hz
Power Consumption:
In use: 134W
In Standby: Less than 1W
Dimensions (W/H/D):
Including TV Stand and Rear Cover:
790 x 490 x 240 mm
(31
3/32 x 19 9/32 x 9 7/16 inches)
Without TV Stand and Rear Cover:
790 x 430 x 138 mm
(31
3/32 x 16 15/16 x 5 7/16 inches)
Mass:
Including TV Stand and Rear Cover:
18.4 kg (40 lbs. 8 ozs.)
Without TV Stand and Rear Cover:
15.2 kg (33 lbs. 8 ozs.)
Supplied Accessories
Remote Commander RM-Y1105 (1)
Two Size AA Batteries
75-ohm coaxial cable (1)
AC power Cord (1)
Rear Cover (1)
Operating Instructions
Warranty Card
Product Registration
Optional Accessories
Note that some optional accessories may be out of stock.
Headphones Plug Adaptor
Connecting Cables
“Memory Stick” Media
Wall-Mount Bracket SU-LW1
Design and specifications are subject to change without notice.

KLV-26HG2
KLV-26HG2
5
WARNING!!
An isolation transformer should be used during any service to avoid possible shock hazard, because of live chassis. The chassis of
this receiver is directly connected to the ac power line.
!SAFETY-RELATED COMPONENT WARNING!!
Components identified by shading and ! mark on the schematic diagrams, exploded views, and in the parts list are critical for safe
operation. Replace these components with Sony parts whose part numbers appear as shown in this manual or in supplements
published by Sony. Circuit adjustments that are critical for safe operation are identified in this manual. Follow these procedures
whenever critical components are replaced or improper operation is suspected.
ATTENTION!!
Afin d’eviter tout risque d’electrocution provenant d’un chássis sous tension, un transformateur d’isolement doit etre utilisé lors de tout
dépannage. Le chássis de ce récepteur est directement raccordé à l’alimentation du secteur.
! ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
Les composants identifies par une trame et par une marque ! sur les schemas de principe, les vues explosees et les listes de pieces
sont d’une importance critique pour la securite du fonctionnement. Ne les remplacer que par des composants Sony dont le numero
de piece est indique dans le present manuel ou dans des supplements publies par Sony. Les reglages de circuit dont l’importance
est critique pour la securite du fonctionnement sont identifies dans le present manuel. Suivre ces procedures lors de chaque
remplacement de composants critiques, ou lorsqu’un mauvais fonctionnement suspecte.
WARNINGS AND CAUTIONS

KLV-26HG2
KLV-26HG2
6
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly soldered
connections. Check the entire board surface for solder splashes and
bridges.
2. Check the interboard wiring to ensure that no wires are “pinched” or
touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps, and
mounting hardware have been replaced. Be absolutely certain that
you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly transistors,
that were installed during a previous repair. Point them out to the
customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious signs of
deterioration. Point them out to the customer and recommend their
replacement.
6. Check the line cords for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.
7. Check the B+ and HV to see if they are specified values. Make sure
your instruments are accurate; be suspicious of your HV meter if
sets always have low HV.
8. Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
Leakage Test
The AC leakage from any exposed metal part to earth ground and from
all exposed metal parts to any exposed metal part having a return to
chassis, must not exceed 0.5 mA (500 microamperes). Leakage current
can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manµFacturers’ instructions to use these
instructions.
2. A battery-operatedAC milliampmeter. The Data Precision 245 digital
multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a VOM
or battery-operated AC voltmeter. The “limit” indication is 0.75 V,
so analog meters must have an accurate low voltage scale. The
Simpson’s 250 and Sanwa SH-63TRD are examples of passive
VOMs that are suitable. Nearly all battery-operated digital multimeters
that have a 2 VAC range are suitable (see FigureA).
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-plate retaining
screw on most AC outlet boxes is also at earth ground. If the retaining
screw is to be used as your earth ground, verify that it is at ground by
measuring the resistance between it and a cold-water pipe with an
ohmmeter. The reading should be zero ohms.
If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble-
light (not a neon lamp) between the hot side of the receptacle and the
retaining screw. Try both slots, if necessary, to locate the hot side on the
line; the lamp should light at normal brilliance if the screw is at ground
potential (see Figure B).
To Exposed Metal
Parts on Set
AC Voltmete
r
(0.75 V)
Earth Ground
0.15 µF1.5 kΩ
g
AC Outlet Box Ohmmeter
Cold-water Pipe
Figure A. Using an AC voltmeter to check AC leakage. Figure B. Checking for earth ground.

KLV-26HG2
KLV-26HG2
7
1-1. REAR COVER AND STAND REMOVAL
SECTION 1: DISASSEMBLY
1-2. CABINET ASSEMBLY REMOVAL
Four screws
(+PSW 4x16)
Stand assy
Rear cover
Two screws
(+BVTP 3x10)
Four screws
(+PSW 4x8)
Cabinet assy
3
12
3
1
2

KLV-26HG2
KLV-26HG2
8
1-3. U1 BOARD REMOVAL
Four screws
(+PSW 4x10)
Four screws
(+BVTT 3x6)
MS shield
MSB board
VESA frame & bracket
MSB board
Two screws
(+BVTT 3x6)
U1 board
Two screws
(+BVTT 3x6)
4
1
2
3
1
2
5
6
7
1-4. MS AND MSB BOARD REMOVAL

KLV-26HG2
KLV-26HG2
9
1-5. G1 BOARD REMOVAL
1-6. A1, TU AND UD BOARD REMOVAL
G1 board
Five screws
(+BVTT 3x6)
TU board
UD shield case UD board
A1 board
Two screws
(+BVTT 3x6)
Two connector screws
Two screws
(+BVTP 3x8)
Four screws
(+BVTT 3x6)
4
1
2
3
1
2
6
5
78

KLV-26HG2
KLV-26HG2
10
1-7. B BOARD REMOVAL
1-8. H1 AND MSX BOARD REMOVAL
B board
Four screws
(+BVTT 3x6)
Two screws
(+BVTT 3x6)
DVI bracket
MSX board
H1 board
Two screws
(+BVTT 3x6)
Two screws
(+BVTP 3x8)
Two screws
(+BVTP 3x8)
Screw
(+BVTP 3x10)
3
1
2
5
4
4
31
2
6

KLV-26HG2
KLV-26HG2
11
1-9. H2 BOARD REMOVAL
1-10. H3 BOARD REMOVAL
H2 board
Four screws
(+BVTP 3x8)
Two screws
(+BVTP 3x8)
H3 board
Two screws
(+BVWHTP 3x12)
1
2
13
2

KLV-26HG2
KLV-26HG2
12
SECTION 2: ADJUSTMENTS
2-1. SETTING THE SERVICE ADJUSTMENT
MODE
1. Standby mode (Power off).
2. Press the following buttons on the remote commander within a
second of each other:
Display Channel 5Sound Volumne +Power
2-2. WHITE BALANCE ADJUSTMENTS
1. Input a grayscale pattern.
2. Enter into Service Mode.
3. Select ADJ ITEM from the Service Mode menu.
4. Press the MENU button on the remote to display the Customer Menu.
5. From the Mode list select VIVID.
6. From the Mode list select: Dynamic Picture = Off
7. From the Mode list select: Color Temp = Cool
8. Press the MENU button on the remote to clear the customer menu.
9. From the ADJ ITEM list do the following:
a. Adjust R DRIVE, G DRIVE, and B DRIVE for correct white balance in
high lighted areas.
b. Adjust R BKG, G BKG, and B BKG for correct white balance in low
lighted areas.
Note: Adjusments automatically save.
10.Repeat steps 4 through 9 for Neutral and Warm mode.
11.When changes are complete, turn the set off then back on.

KLV-26HG2 13
KLV-26HG2
3-1. CIRCUIT BOARDS LOCATION
SECTION 3: DIAGRAMS
TU board
U1 board
H1 board
MSX board
A1 board
H2 board
UD board
B board
MS board
H3 board
G1 board
MSB board

KLV-26HG2 14
KLV-26HG2
G
D
S
B1 E1
C2
B2 C1
E2
-
G
D
S
B2 E2
C1
B1 C2
E1
B2 E2
C1
B1 C2
E1
B2 E2
C1
B1 C2
E1
B1 E1
E2
C1(B2)
C2
B1
E2
C1
C2
(B2)
E1
(B2)
E1
E2
B1
C2
C1
B1
E1
C2
B2
C1
E2
G
SS
D
G
D
B1
E1
C2
B2
C1
E2
B1
E2
C2C1(B2)
E2
B1
C1
C2E1(B2)
C2
B1
C1
E2E1(B2)
C2
B1
C1
E2
B2
E1
C2
Ver.1.6
Transistor
(FET)
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Discrete semiconductor
(Chip semiconductors that are not actually used are included.)
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Source
Source
Anode Anode
(NC)
(NC)
Cathode
Anode
Cathode
Common
Cathode Cathode
Common
Cathode Cathode
Common
Common
Common
Common
Cathode
Anode
Base Emitter
Collector
Base Emitter
Collector
Drain
Gate
Gate
Drain
Device Printed symbol Terminal name Circuit
Terminal name of semiconductors in silk scree
n
printed circuit ( )
Anode
Anode
Anode Cathode
Anode Anode
Cathode
Transistor
(FET)
Transistor
(FET)
Emitter
Collector
Base
Transistor
Source
Gate
Drain
Cathode
Anode
Anode Cathode
Anode
Anode
*
1
5
7
2
3
8
4
9
6
14
13
12
11
10
15
18
17
16
22
21
20
19
23
3-2. PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS INFORMATION
All capacitors are in µF unless otherwise noted. pF : µµF
50WV or less are not indicated except for electrolytics and
tantalums.
All electrolytics are in 50V unless otherwise specified.
All resistors are in ohms. kΩ=1000Ω, MΩ=1000kΩ
Indication of resistance, which does not have one for rating
electrical power, is as follows: Pitch : 5mm
Rating electrical power : 1/4 W
1/4 W in resistance, 1/10 W and 1/16 W in chip resistance.
: nonflammable resistor
: fusible resistor
: internal component
: panel designation and adjustment for repair
: earth ground
: earth-chassis
All variable and adjustable resistors have characteristic
curve B, unless otherwise noted.
Readings are taken with a color-bar signal input.
Readings are taken with a 10MΩdigital multimeter.
Voltages are DC with respect to ground unless otherwise
noted.
Voltage variations may be noted due to normal production
tolerances.
All voltages are in V.
S : Measurement impossibility.
: B+line.
: B-line. (Actual measured value may be
different).
: signal path. (RF)
Circled numbers are waveform references.
The components identified by shading and
!
symbol are critical for safety. Replace
only with part number specified.
The symbol indicates a fast operatingfuse and is displayed on thecomponent
side of the board. Replace only with fuse of the same rating as marked.
Les composants identifies per un trame et une marque
!
sont critiques pour la
securite. Ne les remplacer que par une piece portant le numero specifie.
Le symbole indique une fusible a action rapide. Doit etre remplace par une
fusible de meme yaleur, comme maque.

KLV-26HG2
KLV-26HG2
15
3-3. BLOCK DIAGRAMS (1 OF 6)
10
9
8
7
6
5
4
3
2
1
CN6403
CN6401
OUT2
DETOUT
STLED
BILED
MODE
FMONO
MUTE
R
L
GND
1
2
3
4
5
6
7
8
9
10
GND
9V
30V
5V
SCL T
SDA T
GND
RF AGC
AFT
GND
Q6402
BUFFER
BUFFER
Q6403
Q6401,6404,6406
BUFFER
9V
30V
5V
TU6400
TUNER
DET OUT2
L OUT
R OUT
MUTE
FMONO
MODE
BIL IND
ST IND
DET OUT
AFT OUT
RFAGC
SCL
SDA
VIDEO
AUDIO L/R
CN9202
1
2
3
4
5
6
7
8
9
10
C2
G
Y2
G
V2
G
S-2
LV2
RV2
G
AUDIO
R
L
VIDEO
S VIDEO
12
34
V
L
R
J9202
VIDEO 2
INPUT
H2(2/2)
(INPUT TERMINAL)
6
5
4
3
2
1
CN9004
9
10
11
12
GND
L
R
MUTE
FMONO
MODE
BIL
STL
DETOUT
OUT2 1
2
3
4
5
6
7
8
9
10
GND
AFT
RF AGC
AGC DET(NC)
SDA
SCL
5V
30V
9V
GND
10
9
8
7
6
5
4
3
2
1
CN6450
CN6451
TV
LV2
C2
45
AV SW
COUT1
YOUT1
47
9
12
43
8V2
Y210
IC2803
LV3 16
RV3 18
48 RTV
11 RV2
14 S2
S1
S2-1
7
6
RV14
3Y1
V11
5
2
C1
LV1
LTV46
AUDIO L
AUDIO R
VIDEO
SDA 27
SCL 26
ROUT1 41
LOUT1 39
VOUT2 33
15
V3
Y
C
9V
5V
SCL_T
SDA_T
CR
16
14 C
CB11
Y8
IC2511
Y/V9
6
Y/V OUT
CR OUT
SEL
3
CB/C OUT 5
Y
B-Y
AUDIO L/R
VIDEO
AUDIO R
AUDIO L
8
7
NC
C2
GND
Y2
GND
V2
GND
S-2
LV2
RV2
GND
NC
10
9
8
7
6
5
4
3
2
1
GND
RV1
LY1
S-1
GND
V1
GND
Y1
GND
C1
CN9007
S2-1
NC
NC12
11
INPUT
VIDEO 1
J9201
R
L
V
43
21
S VIDEO
VIDEO
L
R
AUDIO
G
RV1
LV1
S-1
G
V1
G
Y1
G
C1
10
9
8
7
6
5
4
3
2
1
CN9201
(TUNER)
TU
20
19
17
16
14
13
11
10
8
6
5
4
3
2
1
CN2801(2/2)
SCL_T
SDA_T
SCL B 5V
SDA B 5V
Q6450
Q6451
Q6452,Q6453
SYNC SEP
Q6454
BUFFER
CN9003
D-Y
D-PB
D-PR
DVI-MUTE
VGA
DVI-RST
2
4
6
8
9
10
Q2802
Q2535
BUFFER
BUFFER
Q2801
Q2533
Q2537
BUFFER
BUFFER
Q2538
Q2540-2542
BUFFER
Q2556,2557,2560
BUFFER
1
VID
MUTE
PMOD
MOD0
MOD1
BIL
ST
AFT
AGC
SYMDET
SDA T
SCL T
LINRE MUTE
DVI-RST
SCL B 5V
SDA B 5V
TO B-1 BOARD
CN1007
2
7
12
CONT
Q2539
BUFFER
R-Y
CCP SW
SDA_B_5V
SCL_B_5V
A1-1
TO A-2
Q6448
Q6449
2
P_MUTE
UNREG33V
Q6448
Q6449
D6448,6449
SYNC
C
U1
(INPUT TERMINAL)
LINRE MUTE
AUDIO L/R
Y/PB/PR/CCPSW/VID
Y/CB/CR
D-Y/D-PB/D-PR
LINRE MUTE
V3/LV3/RV3
TO UD BOARD
CN9302
H
TO A-3
TO A-3
Q9003
(AV SW)

KLV-26HG2
KLV-26HG2
16
BASS/TREBLE
VOL LOUD/ ATT
3
5 14
13
10 11
AUDIO CONTROL
IC7003
L
R
AUDIO L/R
Y/C
5
6
3
2
7
1
7
1
6
5
2
3
42
41
30
29
22 23 26
IC7011
AP
INL
INR
OUTL
OUTR
MODE
AUDIO L
AUDIO R
COMPARATOR
IC7009
MUTE
Q7001,7002
6
57
4
3
2
1
CN3002
HP DET
NC
SP MUTE
HP MUTE
4
3
2
1
SP L GND
SP L OUT
SP R GND
SP R OUT
CN7002
L
R
SPEAKER
AUDIO R
AUDIO L
G
TO B-1 BOARD
CN1005
IC7002
HP AMP
AUDIO L AUDIO R
3
2
1
HP-L
HP-R
HP-GND
CN7601
4HP-DET
H2
(HEADPHONE)
J7601
HEADPHONE
AUDIO R
AUDIO L
HP MUTE
INPUT2
COMPONENT
J9002
AUDIO
R
L
JIN1-3
IN1-1
AV SW2
IC2505
25
35
33
34 IN1-2 26
27
HOUT 22
SCL 30
31
SDA
23
VOUT
20
IN2-2
42
41
43
IN2-1
IN2-3
PR
PB
Y
PR2
PB2
Y2 X2502
4MHz
SCL_B_5V
SDA_B_5V
Q2558,Q2559
LEVEL SHIFT
17CLAMP SW
16
YG IN
2
315
6
49
8
10
12
11
13
2
4
6
8
10
12
14
15
16
17
18
19
20
21
22
23
24
25
D-PR
D-PB
D-Y
VID
MSAU R
MSAU L
CLAMP GATE
SYNC ON
CCP SW
CSW M
CSW V
AU SW2
AU SW1
SRS
1
CSW H
CSW V
SYNC
Q2502,Q2503
IC2506
Q7011
SRS
1
2
3
7
5
6
1
3
2
Q7003
9V
IC7004
FILTER W
FILTER W
IC7005
CROUT
CBOUT
YOUT
CN7001
A1-2
(AV SW,AUDIO AMP)
SCL_B_5V
SDA_B_5V
HP DET
TO A-1
PR
PB
Y
L/R
V3/LV3/RV3
V3
Q7400 Q7401
3
2
6
5
1
7
AUDIO L
AUDIO R
COMPARATOR
IC7400
MUTE
Q7005,7006
J7O04
Y/CB/CR
LINE MUTE
Y/PB/PR,CCP SW,VID
J9003
J9003
AUDIO
R
L
SW
IC2802
3
1
5
7
4
2
SW
IC2801
3
1
5
7
4
2
RV3
LV3
D-Y/D-PB/D-PR
IC7007
AUDIO AMP
8
1
5AUDIO L
10
OUT2
OUT1 AUDIO R
IN+
INV2+
SP MUTE
Q7007,7005
3
Q7018
Q7019
2
P_MUTE
7
5
6
1
3
2
IC7006
MIX
Q7020
R-Y
B-Y
Y
BLOCK DIAGRAMS (2 OF 6)

KLV-26HG2
KLV-26HG2
17
BLOCK DIAGRAMS (3 OF 6)
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CN4601
UNREG12V
UNREG12V
GND
GND
UNREG6V
UNREG6V
UNREG6V
GND
GND
GND
UNREG33V
GND
REG10.5V
GND
2
1
CN4605
REG16.5V
REG16.5V
25
24
23
22
CN2801(2/2)
POWER1
POWER2
POWER3
POWER4
IC4601
CONVERTER
24 VCC
STBY1
STBY2
OUT1_D
REG5V_IN
LIM
LL1
OUT1_u
LH2
OUT2_D
LL2
OUT2_U
INV2
FB2
POWER_GOOD
33V
AU12V
IC4603
5V REG
VCC OUT
Q4602
SW
G
S1
S2
S3
D1
D2
D3
D4
27 4
1
2
3
5
6
7
8
Q4601
SW
G
S1
S2
S3
D1
D2
D3
D4
4
1
2
3
5
6
7
8
Q4603
SW
G
S1
S2
S3
D1
D2
D3
D4
4
1
2
3
5
6
7
8
Q4605
SW
G
S1
S2
S3
D1
D2
D3
D4
1
2
3
4
5
6
7
8
L8602
IC4602
9V REG
VCC OUT
1
2
21
30
28
29
16
19
18
17
15
14
12
Q4606
L4601
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CN4603
D3.3V
D3.3V
D3.3V
D3.3V
GND
GND
GND
D5V
9V
GND
PANEL12V
PANEL12V
GND
GND
VGA
DVI-MUTE
GND
GND
3.3V_ALERT
5V_ALERT
DCIN_ALERT
GND
DIMMER
BACKLIGHT
PANEL_DET
5
4
3
2
1
CN4604
DIMMER
BACKLIGHT
PANEL_DET
GND
D5V
D4612
D4611
+9V
+12V
PS4601
9
10
B
TO B-1 BOARD
CN1003
TO LCD PANEL
TO G1 BOARD
CN6003
C
TO B-1 BOARD
CN1007
A1-3
(POWER SUPPLY)
D3.3V
REG16.5V
16.5V
Q4604
2
P_MUTE
FROM A-1
FROM A-1
1
2
CN4501
IC4501
3.3V REG
1
5
2
4
2
1
3.3V
3.3V
CN4502
TO B BOARD
CN3002
MSB
(3.3V REG)
3
2
1
R
L
CN6002 F6000
IC6002
DRIVER
1
15
2
23
22
20
16
PROT
Q6001
Q6005
CONVERTER
CONVERTER
Q6006
T6003
PH6002
IC6005
5
7
7
6
5
2
1
UNREG 6V
UNREG 6V
UNREG 6V
UNREG 12V
UNREG 12V
CN6003
D6019
Q6003,Q6004
P-ON SW
1
2
4
3
3
4
2
1
PH6001
T6001
CN6006
POWER ON
STBY 5V
GND
3
1
4
Q6007
P-ON STOP
CONV.
IC6001
1
4
2
3
8
7
5
D6011
D6010
1
3
9
8
D6015
5
6
G1
(POWER SUPPLY)
AC100V
50/60Hz
L6003
D6000
14
13
12
11
L6004
+17V
F/B
D6006
Q6002
CONV.CONTROL
IC6003
VCC OUT
IC6004
5V REG
UNREG 33V11
REG 16.5V13
2
1
REG 16.5V
REG 16.5V
CN6004
TO A-3 BOARD
CN4601
CN1009
TO B BOARD
10
9
T6002
11
12
13
8
9
10
D6015
D6018
D6020
D6017
D6021
D6022
5
7
D
TO LCD UNIT

KLV-26HG2
KLV-26HG2
18
BLOCK DIAGRAMS (4 OF 6)
CN3001
3
4
5
6
8
10
13
20
21
28
40
43
44
45
46
47
48
49
VCLK
VPEN
VVS
VHS
MSAU L
MSAU R
VUV0
VUV7
VY0
VY7
FLAG
MENU STATUS
AC DET
TXD MS
PIC MUTE MS
RXD MS
MS RESET
MS BS2
Q3004,Q3007
FL3001
L.P.F
L.P.F
FL3002
Q3005,Q3008
L.P.F
FL3003
Q3006,Q3009
5
6
2
3
6
5
7
1
7
IC3003
OP AMP.
OP AMP.
IC3002
BUFFER
Q3013
BUFFER
Q3012
2
4-5
7-8
10,11
13,31
33,34
36,37
39,40
42,45
47,48
50,51
53,54
74,56
60-66
22-27
20
68
63
19
18
16
17
8
18
20
44-45
47-50
54-59
63-66
98-99
101-105
108-112
117-120
68-70
72-74
79-82
86
89
90
92
91
93
97
94
32 D0-D31
A0-A12
13
MSCLK
MSDE
MSVS
MSHS
PXI
Y
PB
PR
124-128
131-133
140-144
147-149
155
156
157
233
205
204
223-226
218-221
211-215
206-208
3
5
4
196
189
206
199
97
96
95
12
6
5
4
3
IC3304
READ PLL
HRERF
RPL LHD
C541
5V
SDRAM
IC3303
19-24
27-32
2,3
5,6
8,9
11,12
39,40
42,43
45,46
48,49
16
17
15
14
18
35,36
37-42
46-49
12 DRSD A0-A11
13-20
25-32
DRSD DQ0-DQ15
16
7
8
9
10
11
XCAS
XRAS
XWE
QDM
XCS
Q3304 VCO LIM.
C0-C7
8
8
Y0-Y7
MSVS
MSHS
MSCLK
122
129
133
140
154
147
117
98
99
67
57
58
61
69
93
DR Y0-Y7
8
8DR V0-V7
8DR U0-U7
CLK
HS
VS
CS
CLRK
CLK
CKE
RAS
CAS
SDQM
WE
DRC4
DRC5
DRC2
DRC1
FFSW
CHROMA DEC.
IC3007
IC3302
DRC MF
CCP(Y0-Y7)
8
CCP(C0-C7)
8
CP-HS
CP-VS
CCPCK
IC3008
SDRAM
8C0-C7
8Y0-Y7
24
22
20
18
16
14
12
11
10
9
8
7
6
5
4
3
2
1
D-PR
D-PB
D-Y
VID
MSAU R
MSAU L
CLAMP GATE
SYNC ON
CCP SW
CSW-H
CSW-V
AV SW2
AV SW1
SRS
HP DET
SLEEP MUTE
SP MUTE
HP MUTE
CN1005
TO MS BOARD
CN4000
TO A-2 BOARD
CN2802
3
4
231
SDA B
SCL B
3.3V
X3002
79.99188313MHZ
158 CCPCK2
39 DEV RST
158
35 CLK
36 BBOM
76,77
79,80
82,83
85
3
21
5
37
6
11
25
26
16
15
X3001
14.318MHZ
SDA B 5V
SCL B 5V
IC3001
BUFF
MSAU L
MSAU R
Q3010
BUFF
AUTO WIDE
IC3004
117
90
89
SCLB
SDAB
DR54
XDRC
XDRC
DEV RESET
6
9
8
11
8
12
13
12
4
5
3
13
9
5
MSDE
MS CLK
IC5006 IC5003
CCPCK2
CDHS
PWVPEN
PWVCLK
3
2
1
DIMMER
BACK LIGHT
PANEL DET
CN1003
TO A-3 BOARD
CN8603
25
24
23
22
21
20
18
16
15
13
12
10
9
7
6
4
3
2
TU MUTE
FMONO
MOD0
MOD1
BIL
ST
AFT
AGC
SYNO DET
SDAT
SCLT
GR SW
GR ALLRST
SCL B 5V
SDA B 5V
POWER1
POWER2
POWER3
POWER4
CN1007
1
SDA B 5V
SCL B 5V
SCL B
SDA B
56
57
15
107
108
19
134
133
109
119
28
125
49
47
31
126
127
12
13
17
16
22
30
CPVS
CPHS
DEV RST
MENU STATUS
BRD STATUS
RESET
RXD
TXD
EN
PANEL DET
BACK LIGHT
DIMMER
GR ALLRST
GR SW
SYNC DET
AGC
AFT
ST
BIL
MOD1
MOD2
F MONO
TU MUTE
64
65
43
44
65
23
24
26
128
63
33
34
42
46
132
131
130
8
7
6
5
DRC1
DRC2
DRC4
DRC5
DRC2
HP MUTE
SP MUTE
SLEEP MUTE
HP DET
SRS
AU SW1
AU SW2
CSW V
CSW H
CCP SW
SYNC ON
CLAMP GATE
POWER4
POWER3
POWER2
POWER1
IC1006(1/2)
MAIN CPU
TO A-1 BOARD
CN2801
15 DEVRST
MS BS2
A
G
B
C
B-1(MAIN CPU,DRC-MF,CHROMA DEC.)
TO B(2/2)
TO B(2/2)
TO B(2/2)
TO B(2/2)
B-Y
R-Y
Y
B-Y
Y
R-Y

KLV-26HG2
KLV-26HG2
19
BLOCK DIAGRAMS (5 OF 6)
56-58
62-66
80-83
75-78
98,99
87-92
174,175
178-181
185-188
191-194
202-204
195-199
169
167
166
55
9
8
2
141
143-146
149-153
156
157-161
108-113
115
128
129
132
133
134
135
136
8BLO R0-R7
BLO G0-G7
8
BLO B0-B7
8
2,3,5
6,8,9
11,12,39
40,42,43
45,46
48,49
19-24
27-32
18
36
34
17
16
14
15
BLSD DQ1-16
16
12 BLSD A0-A11
XCS
UDQM
XCKE
XRAS
XCAS
LDQM
XWE
BCLR
IC5802
LCD DRIVE
SDRAM
IC5801
CN1002
1
2
3
4
6
7
8
9
10
11
12
15
16
17
G
TXD
RXD
RES
MD0
MD1
MD2
P-TXD
P-RXD
SCK
P-RES
B INT
RXD
TXD
CN5801
18
17
15
14
12
11
9
8
6
5
TX0-
TX0+
TX1-
TX1+
TX2-
TX2+
TCLK-
TCLK+
TX3-
TX3+
LVDS TX
IC5804
48
47
46
45
42
41
40
39
38
37
L5801-L5805
FILTER
B-2
CPU,LCD DRIVE,SCAN CONV.,
DRC-MF,CHROMA DEC.
94,87,88
118,112,119
120,127
144,150,151
149,152,160
157,168
76,18,57
38,14,39
24,78
111
103,104,109
117
33
53
72
231,232
253,254
255
165-167
173,174,176
195,216
192,194
213,215
234-236
256
191
211,212
228
189
209
153,154,147
148,161-164
169-172,178
179,197,198
217,218,237
81,89-92
97,58,105-108
113-116,121
251
137
22
138
68,48,27
7,28,69
49,8
29,9,30
10,71,11
52,33
2
1
21
42
62
41
63
PIC MUTE
PW BSY3
PW BSY2
PW BSY1
PW RSTO
P RXD
P TXD
168
30
1-8
16-25
48
29-36
38-45
28
14
11
12
20
16
PCPU A0-A19
PCPU D0-D15
PCPU_ROMOEN
PCPU_BOOT WE
PCPU_ROWEN
PW RSTON
34
14
8
8
BL Y0-Y7
DL UV0-UV7
3
5,6
8-13
Y0-Y7
14-17
19-21
23
UV0-UV7
44-45
47-49
51-52
Y0-Y7
54
34
36-38
C0-C7
56
31
33
24
26
VHS
VVS
CCPCK
CPVS
CPHS
18BIT BUS INTERFACE
IC5007
RAM
IC5001
6
12
13
3
4
5
2
11
IC5002
1
13 6
11
IC1010
8
SIRCS
KEY IN
81 11
PANEL V
27
45
PIC MUTE
21
68105
1104
144106
143
PW RST DET
14
141
PWRST
36
88
P SAVE LED
37
55
STBY LED
35
54
POWER LED
73
14
74
9258
7938
7835
7760
76
POREW INT
113
75
SCLB
SDAB
2,3
50-52
54-56
BLO R0-R7
4,14
6-8
10-12
BLO G0-G7
15,16
18-20
22-24
BLO B0-B7
27
28
30
HS
EN
VS
CLK 31
R
G
B
54
53
51
S2
S1
D2
D1
LEVEL SHIFT
Q5801
SCL B
SDA B
3.3V
Q5002,5003SW
69
IC1006(2/2)
MAIN CPU
5BMUTE
2
27
Q1009,Q1010
LEVEL SHIFT
BMUTE
BCLR
JIG MD2
JIG MD1
POWER6
JIG MD0
JIG TXD
JIG RXD
JIG SCK
BINT
Q1017,Q1018
LEVEL SHIFT
SDA D
SCL D
P TXD
P RXD
PW RST
Q1015 RESET
139
137 12
RESET
IC1007
Q1006SW
3.3V
8
7
5
6
NUM WP
SDA A
SCL A
EEPROM
IC1008
32 POWER6
CN1008
1
2
KEY1
POWER INT
CN1004
3
4
5
6
9
P SAVE LED
STBY LED
POWER LED
MS BS2
SIRCS
JIG TXD
JIG RXD
JIG MD0
JIG MD1
JIG MD2
JIG SCK
PWRST
BINT
JIG RXD
JIG TXD
Q1016
CPU&PWRON
1
2
KEY1
POWER INT
5
6
STBY LED
8
POWER LED
9
MS BS2
SIRCS
S1501-S1504
H1
Q1601
OUT VCC
SIRCS
IC1651
D1607
H3
D1604 D1602
(KEY)
(LED,SIRCS)
HS
EN
VS
CLK
BL R0-R7
BL G0-G7
BL B0-B7
CLK
HS
VS
EN
40-43
BYPASS
PW BSY3
PW BSY2
PW BSY1
SCAN CONVERTER
IC7503
184
TO
LCD PANEL
Q1607
Q1608
D102
8
8
8
TO B(1/2)
TO B(1/2)
TO B(1/2)
TO B(1/2) S1508
CN1501
CN1601
2
3
STBY 5V
P SAVE LED(NC)
4
STBY 5V
G
G
Q1603
G
POWER STANDBY/TIMER
BS
POWER

KLV-26HG2
KLV-26HG2
20
BLOCK DIAGRAMS (6 OF 6)
CN4000
VHS
VVS
UPEN
VCLK
VY0-7
VUY0-7
MSAU R
MSAU L
MS BS2
MS RESET
FLAG
PXD MS
PIC MUTE NS
TXD MS
AC DET
BRD STATUS
SIRCS
MENU STATUS
A
IC4201
6
3
4
5
15
16
CPU
IC4000
57
58
59
55
69-71
73-76,78
60
62-68
48
52
137
136
8
8
53
88
108
95
132
130
131
93
101
135
134
104
159
155
156
161
157
162
156
163
41-44
13
10
9
164
38
40
34
37
30-32
29
27
25
24
22
IC4003
1
2
3
4
5
16
14
13
X4200
54MHz
AUDIO DAC
Q4005 Q4004
Q4002,Q4003
6
5
IC4001
NVM
7
SDA
SCL
IC4100
CPU
206
257
235
10
11
31
32
53
54
75
76
137-140
223
225
116
146
147
153
156
161,163,164
170
172
177,178
179
AA13
Y13
24,20
23,19
18,22
8,21
39,41,43,45
34,36
30,32,42,44
35,38,40
31,33
29
28
10
48
25
2,6,17
1,4,7,16
3,5,9
26
11
12
72
73
50-52
27-30
4,6,7
122
124
232
185
188
194,195
201
203
246
45,89
90,107
97
106,113
248
226
247
210,252
253,272
FLASH ROM
FA(A10,A11)2
FA(B9,B10)2
FA(C9,C10)2
FA(D9,D10)2
FD(L1-L4)4
FD(Y1-Y3)
BUSCTL(DIR)
M2,M42
N1-N44
P1,P3,P43
R2-R43
T1-T32
3
M2,M3
R2-R4
T1-T3
2
2
2
3
4
2
4
2
2
FA(A10,A11)
FA(B9,B10)
FA(C9,C10)
FA(D9,D10)
FD(L1-L4)
M2,M3
N1-N4
P1,P3,P4
R2,R3
T1
BUSCTL
D6
D7
C6-C8
B5-B8
A4,A6,A7
J2
J4
Y10
3
4
3
16,20
21,23
15,19
11,14
18
8
3-5
7
168
172
170
150
46
1
2
173
176
2
4
3
4
3
2
4
119,126
127,133
149,150
176,152
157-159
167,168
142-144
112,118
221,222
243,266
166,173
174,175
181-183
189,191
192,198
200
134
109,94
95
102
SDRAM
IC4200
16
19
20
26
29
35
4,5
8,10
11,13
44,45
48,50,51,53
37
38
15
39
IC4202
SDRAM
16-19
20-26
29-35
37,38
15
39
4
14
17
3
2
SDRAM1
SDRAM2
SDRAM3
217,220
238-242
260-265
283,285
286
17
88
101
2
10
8
6
4
CN4100
RESET
ECV
ED
ECLK
ICE
256
234
254
211
IC4203
MUTE SW
MUTE
VY0-VY7
VUV0-VUV7
VDCDISABLE
83
IC4002
WDT
Q4001
RESET
3.3V
D4000
Q4000
Y13,AA13
CLK
128
9
14
51
166
145
CLK54M
CLK_SEL
MS_SEL
PD
BICK
SDAT
LRCK
CKS
CLK12M
CLK66M-RE
CLK20M
WE
45
54
48
8
6
4
2
MS SCLK
MS INS
MS SDIO
MS BS
TO B-1 BOARD
CN3001
31-38
23-30
48
47
46
45
41
43
2
3
11
4
5
6
8
9
10
7
26
R4
169
V2,V3
U1-U4
W1-W3
FD(AA2)
BUS CTL(BE0-4)
BUS CTL(BS,CS,RDY)
AA4
IRQ0,1
DREQ 0-3
250
270
274
269
268
230
227
251
RXD MS
PIC MUTE NS
TXD MS
ACDET
BRD STATUS
SIRCS
MENU STATUS
4,5
8,10
11,13
44,45
48,50,51,53
R OUT
L OUT
SDRAM1
SDRAM2
SDRAM4
SDRAM3
SDRAM7
SDRAM5
SDRAM6
3
5
7
9
CN4101
D4302
LIMITTER
10
9
8
7
6
5
4
3
2
1
GND
VCC
SCLK
#
INS
#
DIO
NC
BS
GND
CN4302
LIMITTER
D4303
3.3V
Q4303
MS DRIVER D4301
Q4301,Q4302
LED SW
(MEMORY STICK)
MSX
CN4301
(PROCESSOR)
MS
MEMORY
STICK
UD
(DVI DRIVER)
IC3807
MCU
18 VGA
21
8
10
24
2
28
3
7
5
6
36
35
31
32
94
95
22
5
6
11
58
92
59
63
5
6
52
53
47
46
13
13
10
DVI DRIVER
IC3803
ESD
IC800
ESD
IC3801
NVM
IC3808
MUTE
RESET
SCL
SDA
OSCOUT
SDA
WP
OSXCIN
DVI-SCL
DVI-SDA
SCL
IOR/Y
IOG/PB
IOB/PR
SDA
SCL
XTALOUT
TCLK
RX0+
RXC-
RXC+
5V
HPO
RX0-
SDA
RX1-
RX1+
RX2-
RX2+
SCL
CN3800
1
2
6
7
9
10
14
16
17
18
23
24
SCL
SDA
DVI5V
DVI5V
X3800
14.318MHz
RX0+
RXC-
RXC+
RX0-
RX1-
RX1+
RX2-
RX2+
AIN7
12MHz
X3801
D-Y
D-PB
D-PR
MUTE
VGA
DVI_RST
2
4
STBY 5V
6
8
9
10
CN3802
12 STBY 5V
TO
PANEL
UNIT
B.P.F
FL3800-3802
CN9003
TO A-1 BOARD
H