Antenna75 ohm external terminal for VHF/UHF
Television SystemNTSC, American TV Standard
Screen Size (measured diagonally)29 inches
Channel Coverage
VHF2-13
UHF14-69
CATV1-125
Power Requirements
Number of Inputs/Outputs
Vid eo (IN)41 Vp-p, 75 ohms unbalanced, sync negative
S Video (IN)3Y: 1 Vp-p, 75 ohms unbalanced, sync negative
Audio (IN)6500 mVrms (100% modulation)
TV Out1 Video: 1 Vp-p 75 ohms unbalanced, Sync
DTV (HD)/DVD Input2 (Y, P
RF Inputs1
Converter1
Speaker Output7 W x 2
Dimensions (W x H x D)765 x 578 x 502 mm
Mass48.5 kg
Power Consumption
Design and specifications are subject to change without notice.
220 V AC, 60 Hz
, PR)Y: 1.0 Vp-p, 75 ohms unbalanced, sync
B
Indicated on the rear of the TV
C: 0.286 Vp-p (Burst signal), 75 ohms
Impedance: 47 kiloohms
negative
Audio: 500 mVrms
negative
P
: 0.7 Vp-p, 75 ohms
B
PR: 0.7 Vp-p, 75 ohms
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SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE
ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR CARBON PAINTED ON THE CRT, AFTER REMOVING THE ANODE.
AN ISOLATION TRANSFORMER SHOULD BE USED DURING
ANY SERVICE TO AVOID POSSIBLE SHOCK HAZARD, BECAUSE OF LIVE CHASSIS.
THE CHASSIS OF THIS RECElVER 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
PAR TS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE
THESECOMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT
ARE CRITICAL TO SAFEOPERATION ARE IDENTIFIED IN THIS
MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITICAL COMPONENTS ARE REPLACED OR IMPROPER OPERATION IS SUSPECTED.
(CAUTION)
WARNING!!
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TABLE OF CONTENTS
SectionTitlePage
––––––––––––––
1. SELF DIAGNOSIS FUNCTION .................................... 5
8. ELECTRICAL PARTS LIST..................................... 141
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SECTION 1
SELF DIAGNOSIS FUNCTION
1.Summary of Self-Diagnosis Function
•This device includes a self-diagnosis function.
•In case of abnormalities, the STANDBY/ indicator automatically blinks. It is possible to predict the abnormality
location by the number of blinks. The Instruction Manual describes blinking of the /STANDBY/ indicator.
•If the symptom is not reproduced sometimes in case of a malfunction, there is recording of whether a malfunction was generated
or not. Operate the remote command to confirm the matter on the screen and to predict the location of the abnormality.
2.Diagnosis Items and Prediction of Malfunction Location
•When a malfunction occurs the STANDBY/ indicator only blinks for one of the following diagnosis items. In case of
two or more malfunctions, the item which first occurred blinks. If the malfunctions occurred simultaneously, the item with the
lower blink count blinks first.
•The screen display displays the results regarding all the diagnosis items listed below. The display “ 0 ” means that no malfunctions occurred.
•The STAND BY indicator blinking display is released by turning OFF the power switch
on the TV main unit or removing the plug from the power.
* One blink is not used for self-diagnosis.
•EXAMPLE
<Diagnosis Items> <Number of Blinks>
• +B overcurrent 2 times
• +B overvoltage3 times
• Vertical deflection stop4 times
Lamp ON : 0.3 seconds
Lamp OFF : 0.3 seconds
Has entered standby mode.
Lamp OFF :
3.0 seconds
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4.Self-diagnosis screen displays
•In cases of malfunctions where it is not possible to determine the symptom such as when the power goes off occasionally or when
the screen disappears occasionally, there is a screen display on whether the malfunction occurred or not in the past (and whether
the detection circuit operated or not) in order to allow confirmation.
<Screen Display Method>
•Quickly press the remote command button in the following order from the standby state.
5
bbb
–
˘
Be aware that this differs from the method of
entering the service mode ( + ).
Self-diagnosis screen display
• "G" : OK, "NG" : DETECTS ONCE OR MORE
• THE 10 DIGITS OF NUMERALS ARE FOR CHECKING,
NO RELATION TO DIAGNOSIS.
• 101 : NO LED BLINKING FOR WDT.
"0" : NUMBER OF DETECTION.
5.After the self-diagnosis operation
•The results display is not automatically cleared. In case of repairs and after repairs, check the self-diagnosis screen and be sure
to return the results display to “ 0 ”.
•If the results display is not returned to “ 0 ” it will not be possible to judge a new malfunction after completing repairs.
<Method of Clearing Results Display>
1. Power off (Set to the standby mode)
2. b 5 b + b (Service Mode)
3. Channel 8 b (Test reset = Factory preset condition)
<Method of Ending Self Diagnosis Screen>
•When ending the self-diagnosis screen completely, turn the power switch OFF on the remote commander or the main unit.
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KV-DX29K9H/KV-DX29K9H/B/DX29K90B/DX29K90L
Q727
Q729
OVP
(FROM D BOARD)
AC-RLY
(TO D BOARD)
OCP
(FROM D BOARD)
• I2C YCJ RETURN DATA
11111111
LED
BLINKING
TIMES
2
3
4
5
6
7
LATCH
LATCH
Q726
Q728
SYMPTOM
+B OCP
+B OVP
V-STOP
AKB
LOW-B ERROR
H-STOP
OVP
MAIN
MICROCOMPUTER
IC701
M308V2
OCP
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A1 BOARD
12C BUS
A K B
H-STOP
V-STOP
YCJ IC201
CXA-2150Q
WHEN
A K B
H-STOP
V-STOP
ARE ALL 1= LOW B ERROR
+B OCPIf the IC701 Pin 44 (+B OCP DET) is high 2 seconds, turn AC-RELAY low (P-OFF) and make STANDBY
LED blinks twice.
+B OVPIf the IC701 Pin 45 (+B OVP DET) is high 2 seconds, turn AC-RELAY low (P-OFF) and make STANDBY
LED blinks three times.
V-STOPIf the return data Bit0 (VNG) from CXA2150Q is “1” while 2 seconds, turn AC-RELAY low (P-OFF) and
make STANDBY LED blinks four times.
AKBIf the return data Bit2 (IKREF) from CXA2150Q is “0” and there is no change for 20 seconds, make
STANDBY LED blinks five times.
At this time, AC-RELAY continues to high.
LOW-B ERRORIf the IC701 Pin 69 (AC-RELAY) is high and the Pin 43 (LOW-B ERROR DET) is low while 5 seconds,
turn AC-RELAY low (P-OFF) and make STANDBY LED blinks six times.
H-STOPIf the return data Bit1 (HNG) from CXA2150Q is “1” while 2 seconds, turn AC-RELAY low (P-OFF) and
make STANDBY LED blinks seven times.
W. D. T.Observes the watch dock timer (BUS COMMUNICATION ERROR DET) bus communication. If errors are
detected, counts up and reform the bus communication and displays the number of time.
(No LED blinking).
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SECTION 2
DISASSEMBLY
2-1. REAR COVER
1) Remove eight screws secured the rear cover.
2) Remove the rear cover by pulling backward.
2-2. SPEAKER
1) Remove two screws secured the speaker.
2) Remove the speaker backward.
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2-3. CHASSIS ASSEMBLY
1) Remove two claws on both sides of the chassis assembly
by pulling up.
Enlarged view (left side)
Enlarged view (right side)
2) Pull out the chassis assembly backward.
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2-4. ASSEMBLING CHASSIS ASSEMBLY
1) Hold the both sides of the chassis assembly.
2) Push forward until the claws on both sides of the chassis
assembly fit into the beznet assembly.
Enlarged view (left side)
Enlarged view (right side)
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2-5. SERVICE POSITION
1) Hold the chassis assembly in the rear.
2) Turn it clockwise 90 degrees and stand it.
3) Settle it by inserting the chassis assembly holder under
the U bracket.
2-6. U BRACKET
1) Remove three screws secured the U bracket.
2) Pull out the power cord and while pulling up the claw
secured the U bracket,
3) Remove the U bracket.
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2-7. F4 BOARD
1) Remove three screws secured the F1 bracket.
2) Remove F4 board with the F1 bracket.
2-9. B1 BOARD
1) Remove connector CN3003 on B1 board.
2) Remove B1 board while putting off three claws on two Bto-B connectors.
2-8. U3 BOARD
1) While pulling two claws on the B-to-B connector,
2) Remove U3 board from B1 board.
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2-10. H5 BOARD
1) Remove two screws secured H5 board.
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2) Remove H5 board.
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2-11. REMOVAL OF ANODE-CAP
NOTE : After removing the anode, short circuit
the anode cap to the metal chassis, CRT shield or carbon paint on the
CRT.
• REMOVING
1 Turn up one side of the rubber
2 Using a thumb pull up the rubber
PROCEDURES
a
a
cap in the
b
cap firmly in the direction
direction indicated
the anode of the picture tube and
by the arrow a.
b
indicated by the arrow b.
c
3 When one side of the rubber
can be removed by turning up the rubber cap and pulling it up in the direction of the
arrow
c.
cap is separated
from the anode b
utton, the anode-cap
•HOW TO HANDLE AN ANODE-CAP
1 Do not dama
2 Do not press
A metal fitting called
3 Do not turn
The shatter-hook
ge the surface
the rubber too hard
the foot of rubber over too hard.
terminal will stick out
of anode-caps with
so as not to damage the inside of
the shatter-hook terminal is built into
or damage the rubber
sharp shaped objects.
anode-cap.
the rubber.
.
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2-12. CRT
NOTE: After removing the anode, short circuit the anode of the picture tube
and the anode cap to the metal chassis, CRT shield or carbon paint
on the CRT.
1 Rear cover assembly
9 DGC holder
8 DGC holders
qa Degauss coil
5 Neck assembly
2 Anode cap
4 C1 board
qa Degauss coil
qs Extension
springs
6 Deflection
yoke
3 Chassis assembly
7 CRT supporter
qd Screws
(Crown washer +TP 7x40)
qf CRT
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2-13. PARTS LOCATION AND WIRING
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SECTION 3
SERVICE MODE
3-1.METHOD OF SETTING THE SERVICE ADJUSTMENT
MODE
SERVICE MODE PROCEDURE
1. Standby mode. (Power off)
2. n 5 n (+) n
on the Remote Commander.
(Press each button within a second.)
3-2.SERVICE MODE ADJUSTMENT
Item NO.(register name)
Category
Data
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7. If you want to recover the latest values press 0 then to
read the memory.
8. Press [MUTING] then to write into memory.
9. Turn power off.
Note: Press 8 then on the Remote Commander to initialize
or turn set off and on to exit.
3-3.MEMORY WRITE CONFIRMATION METHOD
1. After adjustment, turn power off with the remote commander.
2. Turn power on and set to Service Mode.
3. Call the adjusted items again and confirm they were adjusted.
3-4. ADJUSTING BUTTONS AND INDICATOR
3D-COMB
0 NRMD
FH: - - - - - /
FV: - - - - -
0- - -
000
0
0
3. The SCREEN displays the item being adjusted.
4. Press 1 or 4 on the Remote Commander to select the
adjustment item.
5. Press 3 or 6 on the Remote Commander to change the data.
6. Press 2 or 5 on the Remote Commander to select the
category.
Every time you press 2(Category up), Service mode changes