SONY KD-34XS955, KD-36XS955 Service Manual

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL

MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.

KD-30XS955
KD-30XS955
KD-34XBR960
KD-34XBR960
KD-34XS955
KD-34XS955
KD-34XS955
KD-36XS955
KD-36XS955

RM-Y199 US SCC-S66U-A

RM-Y199 HAWAII SCC-S69K-A

RM-Y201 US SCC-S66V-A

RM-Y201 HAWAII SCC-S69L-A

RM-Y199 US SCC-S66W-A

RM-Y199 CANADA SCC-S70V-A

RM-Y199 HAWAII SCC-S69M-A

RM-Y199 US SCC-S66X-A

RM-Y199 HAWAII SCC-S69N-A

DA-4

CHASSIS

ORIGINAL MANUAL ISSUE DATE: 6/2004

:UPDATED ITEM

☛

REVISION DATE SUBJECT

6/2004 No revisions or updates are applicable at this time.
7/2004 Reissue entire manual
11/2004 Updated Table of Contents (Replace Pg. 3 with Pg. 3)
Added Note to Cable Wire Dressing section (Replace Pg. 13 with Page 13)
Updated 2-1. Beam Landing instructions (Replace Pg. 34 with Pg. 34)
Updated ID Map Table (Replace Pg. 92 with Pg. 92)
Updated Circuit Boards Location diagram (Replace Pg. 93 with Pg. 93)
Replaced P Board Schematic Diagram (Replace Pg. 99 with Pg. 99)
Added PA Board Schematic and PWBs (Add Pgs. 100-A and 100-B)
Updated BY Board PWBs (Replace Pgs. 111 & 112 with Pgs. 111 &112)
Updated DZ Board Schematic (2 of 2) (Replace Pg. 123 with Pg. 123)
Added PA Board to Exploded View section (Replace Pgs. 141, 143, & 145 with Pgs. 141, 143, & 145)
Added PA Board information to Electrical Parts Lists (Add Pgs. 204-208)
12/2004 Corrected Self-Diagnostic Circuit Diagram (Replace Pg. 9 with Pg. 9)
2/2005 Updated 2-1. Beam Landing instructions (Replace Pg. 34 with Pg. 34)
Reorganized 2-2. Convergence and 2-3. V-Pin and V-Cen Adjusment instructions
(Replace Pg. 35 with Pg. 35)
Corrected Block Diagram (Replace Pg. 94 with Pg. 94)
Updated DZ Schematic Diagram to correct IC5005 pin 3 (Replace Pg. 122 with Pg. 122)
Corrected Exploded View diagrams to show correct placement of Neck Assembly & Landing Coil Correction
Corrected PN for Control Door & Power Button, Added Door Damper
(Replace Pgs. 142, 144, &146 with Pgs. 142, 144, &146)

9-965-965-05

TRINITRON® COLOR TELEVISION

Self Diagnosis

Supported model

SERVICE MANUAL

MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.

KD-30XS955
KD-30XS955
KD-34XBR960
KD-34XBR960
KD-34XS955
KD-34XS955
KD-34XS955
KD-36XS955
KD-36XS955

RM-Y199 US SCC-S66U-A

RM-Y199 HAWAII SCC-S69K-A

RM-Y201 US SCC-S66V-A

RM-Y201 HAWAII SCC-S69L-A

RM-Y199 US SCC-S66W-A

RM-Y199 CANADA SCC-S70V-A

RM-Y199 HAWAII SCC-S69M-A

RM-Y199 US SCC-S66X-A

RM-Y199 HAWAII SCC-S69N-A

DA-4

CHASSIS

9-965-965-05

KD-34XBR960 RM-201

TRINITRON® COLOR TELEVISION

KD-30XS955/34XBR960/34XS955/36XS955

TABLE OF CONTENTS

SECTION TITLE PAGE SECTION TITLE PAGE

Specifications ................................................................................. 4

Warnings and Cautions .................................................................. 6

Safety Check-Out ........................................................................... 7

Self-Diagnostic Function ................................................................. 8

SECTION 1: DISASSEMBLY ................................................................11

1-1. Rear Cover Removal .............................................................11

1-2. Chassis Assembly Removal ..................................................11

1-3. Service Position ....................................................................11

1-4. Picture Tube Removal .......................................................... 12

Anode Cap Removal Procedure .......................................... 12

Cable Wire Dressing ............................................................ 13

SECTION 2: SET-UP ADJUSTMENTS ................................................ 34

2-1. Beam Landing ...................................................................... 34

2-2. Convergence ........................................................................ 35

2-2.1. Vertical and Horizontal Static Convergence ............ 35

2-3. V-PIN and V-CEN Adjustment .............................................. 35

2-3.1. Operation of BMC (Hexapole) Magnet .................... 35

2-3.2. TLH Plate Adjustment .............................................. 36

2-3.3. Screen-Corner Convergence ................................... 36

2-3.4. Dynamic Convergence Adjustments ........................ 36

2-4. Focus Adjustment ................................................................. 37

2-4.1. Dynamic Focus/Dynamic Quadra-Pole Data ........... 37

2-5. Screen (G2) .......................................................................... 38

2-6. Picture Quality Adjustments ................................................. 38

2-6.1. Video Input - Sub Contrast Adjustment .................... 38

2-6.2. Video Input - Sub Hue/Sub Color Adjustment .......... 39

2-6.3. RF Input - Sub Contrast Adjustment ........................ 39

2-6.4. RF Input - Sub Hue/Sub Color Adjustment .............. 40

2-7. White Balance (CRT) and Sub Bright Adjustment ................ 40

2-7.1. Color Offset Adjustment Procedure ......................... 41

2-8. H Raster Center Adjustment ................................................ 41

2-9. Picture Distortion Adjustments ............................................. 42

2-9.1. NTSC (DRC) Full Mode Adjustment ........................ 42

2-9.2. 1080i HD Mode Adjustment ..................................... 43

2-9.3. Vertical Compressed Mode Check and Confirmation

(For 4x3 CRT Only) ................................................. 43

2-9.4. Normal, Zoom and Wide Zoom modes .................... 43

SECTION 3: SAFETY RELATED ADJUSTMENTS ............................. 44

3-1. Preparation Before Confirmation .......................................... 44

3-1.1 Hold-Down Operation Confirmation ......................... 44

3-2. B+ Max Confirmation ........................................................... 44

3-3. B+ Voltage Check ................................................................ 44

3-4. High Voltage (HV) Check ..................................................... 44

3-5. Preparation for HV and IK Protector Check ......................... 44

3-6. HV Protector Check ............................................................. 44

3-6-1. Cut Off Condition ..................................................... 44

3-6-2. High Light Condition ................................................ 45

3-7. IK Protector Check ............................................................... 45

3-8. Hold Down Check ................................................................ 45

3-9. Restoration ........................................................................... 45

3-10. HS Service Flowchart ........................................................... 46

HS Service Flowchart Table ................................................. 47

SECTION 4: CIRCUIT ADJUSTMENTS .............................................. 48

4-1. Setting Service Adjustment Mode ........................................ 48

4-1.1. Service Adjustment Mode In .................................... 48

4-1.2. Service Adjustment Mode Memory .......................... 48

4-1.3. Reading the Memory ............................................... 48

4-1.4. Adjusting the Picture ................................................ 48

4-1.5. Resetting the Data ................................................... 48

4-1.6. Resetting the MID NVM Data .................................. 48

4-1.7. Resetting the System NVM Data ............................. 48

4-1.8. Copy Function .......................................................... 48

4-2. Memory Write Confirmation Method .................................... 49

4-3. Remote Adjustment Buttons and Indicators ......................... 49

4-4. Service Data ......................................................................... 50

KD-34XBR960 Service Data Only ........................................ 50

KD-30XS955/34XS955/36XS955 Service Data Only ........... 71

4-5. ID Map Table ........................................................................ 92

SECTION 5: DIAGRAMS ..................................................................... 93

5-1. Circuit Boards Location ........................................................ 93

5-2. Printed Wiring Boards and

Schematic Diagrams Information ......................................... 93

5-3. Block Diagrams .................................................................... 94

5-4. Schematics and Supporting information .............................. 97

DL Board Schematic Diagram .............................................. 97

P Board Schematic Diagram ................................................ 99

PA Board Schematic Diagram ......................................... 100-A

AZ Board Schematic Diagram (1 of 3) ............................... 101

AZ Board Schematic Diagram (2 of 3) ............................... 102

AZ Board Schematic Diagram (3 of 3) ............................... 103

BY Board Schematic Diagram (1 of 5) ............................... 106

BY Board Schematic Diagram (2 of 5) ............................... 107

BY Board Schematic Diagram (3 of 5) ............................... 108

BY Board Schematic Diagram (4 of 5) ............................... 109

BY Board Schematic Diagram (5 of 5) ................................ 110

MZ Board Schematic Diagram (1 of 4) ................................113

MZ Board Schematic Diagram (2 of 4) ................................114

MZ Board Schematic Diagram (3 of 4) ................................115

MZ Board Schematic Diagram (4 of 4) ................................116

UZ Board Schematic Diagram ............................................119

DZ Board Schematic Diagram (1 of 2) ............................... 122

DZ Board Schematic Diagram (2 of 2) ............................... 123

HCX Board Schematic Diagram ......................................... 127

CX Board Schematic Diagram ........................................... 129

HAX Board Schematic Diagram ......................................... 132

HBZ Board Schematic Diagram ......................................... 134

WY Board Schematic Diagram .......................................... 136

5-5. Semiconductors (1 of 2) ..................................................... 139

Semiconductors (2 of 2) ..................................................... 140

SECTION 6: EXPLODED VIEWS ...................................................... 141

6-1. Chassis (KD-34XBR960 Only) ........................................... 141

6-2. Picture Tube (KD-34XBR960 Only) .................................... 142

6-3. Chassis (KD-30XS955/34XS955 Only) .............................. 143

6-4. Picture Tube (KD-30XS955/34XS955 Only) ...................... 144

6-5. Chassis (KD-36XS955 Only) .............................................. 145

6-6. Picture Tube (KD-36XS955 Only) ...................................... 146

KD-30XS955/34XBR960/34XS955/36XS955

SECTION 7: ELECTRICAL PARTS LIST ......................................... 147

3

SPECIFICATIONS

KD-30XS955/34XBR960/34XS955/36XS955

Power Requirements

Inputs/Outputs

120V AC, 60Hz

HDMI IN

Video
1080i, 720p, 480p, 480i
Audio Two channel linear PCM 32, 44.1 and 48 kHz,
16, 20, and 24 bit

Video (IN)

4 total (1 on front panel)
1Vp-p, 75ohms unbalanced, sync negative

S Video (IN)

3 total (1 on front panel)
Y: 1Vp-p, 75ohms unbalanced, sync negative
C: 0.286Vp-p (Burst signal), 75ohms

Audio (IN)

7 total (1 on front panel)
500 mVrms (100% modulation)
Impedance:47 kilo ohms

Control S (IN/OUT)

1 total

Component Video Input

2 (Y, PB, PR)
Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative

: 0.7 Vp-p, 75 ohms;

P

B

PR: 0.7 Vp-p, 75 ohms

Audio OUT (VAR/FIX)

1 total
At the maximum volume setting
More than 408 mVrms (Variable)
More than 408 mVrms (Fixed)
Impedance (Output):2 kilo ohm

i.LINK (KD-34XBR960 Only)

3 total (1 on front panel)
4-pin S400 i.LINK terminal

Digital Audio Optical Output
PCM/Dolby Digital

1 total
Optical Rectangular

CableCARD Slot

PCMCIA Type I/II

KD-30XS955 KD-34XBR960 KD-34XS955 KD-36XS955

Speaker Output (W)

Power Consumption (W)

In Use (Max) 220 W 270 W 250 W 270 W

In Standby 3 W 3 W 3 W 3 W

In CableCARD Standby 20 W 23 W 20 W 20 W

Dimensions (W x H x D)

mm 898 x 604 x 564.5 mm 994 x 652 x 605 mm 994 x 654 x 604 mm 994 x 776.5 x 634 mm

3/8

3/4

35

in

x 23

x 22

1/4

in 39

Mass

kg 67 kg 89 kg 93 kg 108.2 kg

lbs 148 lbs 196 lbs 205 lbs 238.5 lbs

© 2004 Dolby Laboratories, Inc.
Dolby, Pro Logic, and the double-D symbol are registered
trademarks of Dolby Laboratories.

TruSurround

by SRS

TruSurround is a trademark of SRS Labs, Inc. SRS and the SRS
symbol are registered trademarks of SRS Labs, Inc. in the United
States and in select foreign countries. SRS and TruSurround are
incorporated under license from SRS Labs, Inc. and are protected
under United States Patent Nos. 4,748,669 and 4,841,572 with
numerous additional issued and pending foreign patents. Pur­chase of this product does not convey the right to sell recordings
made with the TruSurround technology.

™

®

1/8

x 25

7.5 W x 2

15W Subwoofer

5/8

7/8

x 23

in 39

x 25

x 23

3/4

in 39

1/8

x 30

5/8

x 25 in

1/8

3/4

SRS (SOUND RETRIEVAL SYSTEM)

The SRS (SOUND RETRIEVAL SYSTEM) is manufactured
by Sony Corporation under license from SRS Labs, Inc. It is
covered by U.S. Patent No. 4,748,669. Other U.S. and foreign
patents pending.

The word ‘SRS’ and the SRS symbol are registered trade­marks of SRS Labs, Inc. BBE and BBE symbol are trademarks of
BBE Sound, Inc. and are licensed by BBE Sound, Inc. under U.S.
Patent No. 4,638,258 and 4,482,866.

KD-30XS955/34XBR960/34XS955/36XS955

Design and specifi cations are subject to change without notice.

4

Television system

American TV standard, NTSC
ATSC compliant (8 VSB terrestrial)
ATSC compliant 8 VSB terrestrial
QAM on cable ANSI/SCTE 07 2000

Channel coverage

Analog
VHF: 2-13/ UHF: 14-69/ CATV: 1-125
Digital
VHF: 2-13/ UHF: 14-69/ CATV: 1-135

Picture tube

FD Trinitron® tube

Visible screen size

30-inch picture measured diagonally (KD-30XS955 Only)
34-inch picture measured diagonally (KD-34XBR960/34XS955 Only)
36-inch picture measured diagonally (KD-36XS955 Only)

Actual screen size

32-inch measured diagonally (KD-30XS955 Only)
36-inch measured diagonally (KD-34XBR960/34XS955 Only)
38-inch measured diagonally (KD-36XS955 Only)

KD-30XS955/34XBR960/34XS955/36XS955

Antenna

75 ohm external terminal for VHF/UHF

Supplied Accessories

Remote Commander
RM-Y199 (KD-30XS955/34XS955/36XS955 Only)
RM-Y201 (KD-34XBR960 Only)
Two Size AA (R6) Batteries

Optional Accessories

AV Cable: VMC-810/820/830 HG
Audio Cable: RKC-515HG
Component Video Cable: VMC-10/30 HG
ILINK cables: (KD-34XBR960 Only)
VMC-IL4415 (4-pin to 4-pin, 1.5 meters)
VMC-IL4435 (4-pin to 4-pin, 3.5 meters)
TV Stand:
SU-30HX1 (KD-30XS955 Only)
SU-34XBR3 (KD-34XBR960 Only)
SU-34HX1 (KD-34XS955 Only)
SU-36HX1 (KD-36XS955 Only)

KD-30XS955/34XBR960/34XS955/36XS955

5

KD-30XS955/34XBR960/34XS955/36XS955

WARNINGS AND CAUTIONS

CAUTION

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.

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 identifi ed 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 identifi ed in this manual. Follow these procedures
whenever critical components are replaced or improper operation is suspected.

ATTENTION!!

Apres avoir deconnecte le cap de l’anode, court-circuiter l’anode du tube cathodique et celui de l’anode du cap au chassis metallique
de l’appareil, ou la couche de carbone peinte sur le tube cathodique ou au blindage du tube cathodique.

Afi n 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 identifi es 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 identifi es dans le present manuel. Suivre ces procedures lors de chaque
remplacement de composants critiques, ou lorsqu’un mauvais fonctionnement suspecte.

KD-30XS955/34XBR960/34XS955/36XS955

6

SAFETY CHECK-OUT

g

KD-30XS955/34XBR960/34XS955/36XS955

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 specifi ed 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 manufacturers’ instructions to use these
instructions.

2. A battery-operated AC 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 Figure A).

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 trouble­light (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

0.15

µ

F

Figure A. Using an AC voltmeter to check AC leakage. Figure B. Checking for earth ground.

kΩ

1.5

Earth Ground

KD-30XS955/34XBR960/34XS955/36XS955

AC V oltmeter
(0.75 V)

AC Outlet Box

Ohmmeter

Cold-water Pipe

7

KD-30XS955/34XBR960/34XS955/36XS955

SELF-DIAGNOSTIC FUNCTION

Self Diagnosis

Supported model

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER LED will automatically begin to fl ash. The number
of times the LED fl ashes translates to a probable source of the problem. A defi nition of the STANDBY/TIMER LED fl ash indicators is listed in the
instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the Remote Commander can be used to review
the failure occurrence data stored in memory to reveal past problems and how often these problems occur.

Diagnostic Test Indicators

When an error occurs, the STANDBY/TIMER LED will fl ash a set number of times to indicate the possible cause of the problem. If there is more than
one error, the LED will identify the fi rst of the problem areas.

Results for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, an error has occurred.

No. of times

Diagnostic Item

Power does not turn on Does not light _______

+B Overcurrent (OCP)* 2 times 2:0 or 2:1

Low +B Overvoltage (OVP) 3 times 3:0 or 3:1
Vertical Deflection Stopped 4 times 4:0 or 4:1

White Balance Failure
(not balanced)

LOW +B OCP/OVP
(overcurrent/overvoltage)***

Horizontal Deflection
Stopped

STANDBY /

TIMER lamp

flashes

5 times 5:0 or 5:1

6 times 6:0 or 6:1

7 times 7:0 or 7:1

Display

Result

Probable Cause Location Detected Symptoms

• Power cord is not plugged in.

• Fuse is burned out (F501). (AZ Board)

• H.OUT (Q5030) is shorted. (DZ Board)

• +B PWM (Q5003) is shorted.

(DZ Board)

• IC6505 is faulty. (DZ Board) • Has entered standby mode.

• 15V is not supplied. (DZ Board)

• IC5004 is faulty. (DZ Board)

• Video OUT (IC9001-IC9003) is faulty.

(CX Board)

• CRT drive (IC2801) is faulty.
(BY Board.)

• G2 is improperly adjusted.**

• +5 line is overloaded.

(AZ, BY, MZ Boards)

• +5 line is shorted.
(AZ, BY, MZ Boards.)

• IC504 is faulty. (AZ Board)

• Power does not come on.

• No power is supplied to the TV.

• AC Power supply is faulty.

• Power does not come on.

• Load on power line shorted.

• Has entered standby mode after

Horizontal raster.

• Vertical deflection pulse is stopped.

• Power line is shorted or power

supply is stopped.

• No raster is generated.

• CRT cathode current detection

reference pulse output is small.

• No picture

• No picture

* If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously. The symptom that is diagnosed first by the

microcontroller is displayed on the screen.
** Refer to Screen (G2) in Section 2-5 of this manual.
*** If STANDBY/STEREO LED flashes six (6) times, unplug the unit and wait 10 seconds before performing the adjustment.

Display of Standby/Timer LED Flash Count

Diagnostic items Flash count

+B Overcurrent 2 times

Low +B Overvoltage 3 times

Vert. Deflection Stopped 4 times

White Balance Failure 5 times

Low +B OCP/OVP 6 times

Horiz. Deflection Stopped 7 times

Lamp ON 0.3 sec.

Lamp OFF 0.3 sec.

Lamp OFF 3 sec.

* One fl ash count is not used for

Standby/Timer LED

self-diagnostic.

Stopping the Standby/Timer LED Flash

Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER LAMP from fl ashing.

KD-30XS955/34XBR960/34XS955/36XS955

8

KD-30XS955/34XBR960/34XS955/36XS955

Self-Diagnostic Screen Display

For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confi rmed, it is possible to bring up past
occurrences of failure on the screen for confi rmation.

To Bring Up Screen Test

In standby mode, press buttons on the Remote Commander sequentially, in rapid succession, as shown below:

DISPLAY

Channel

Sound volume

5

-

Power ON.

SELF DIAGNOSIS
2: +B OCP 0

3: +B OVP 0

4: VSTOP 0

5: AKB 1

6: LOWB 0

7: H-STOP 0

Numeral “0”

means that no fault was detected.

Numeral “1”

means a fault was detected one
time only.

101: WDT 24

Handling of Self-Diagnostic Screen Display

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during repairs. When you
have completed the repairs, clear the result display to “0”.
Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion of the repairs.

Clearing the Result Display

To clear the result display to “0”, press buttons on the Remote Commander sequentially when the diagnostic screen is displayed, as shown below:
NOTE: This will also reset all user functions (including auto programming and picture settings)

Quitting the Self-Diagnostic Screen

To quit the entire self-diagnostic screen, turn off the power switch on the Remote Commander or the main unit.

Self-Diagnostic Circuit

☛

STBY-LED

IC2300

MAIN MICRO

STR

48

STBY-LED

44

OCP

OVP

45

43

LOW B ERR

AC RLY

5V UNREG 7V

MZ

CLKO

29

DATO

30

69

Q6527

Q6530

ENABLE ON

LATCH

Q6532

LATCH

AZ

IC504

SV REF

IO

O

IC2801

Y/C JUNGLE

SCL

26

25

SDA

RY6501

P_SW(-)

21

34

1K-PROT2

+B OVP

D6537

D6505

HV PROT

D5007

BY

AKB

VPROT

HPROT

CRT

58

VDY-

35

34

R5104 R5105

R5125

UNREG 11V

BY

Q5018

INVERT

IC5007

2

14

H. PROT
MONITOR

DZ

PH6501

IN RUSH
OVER CURRENT

1

4

2

3

+B +B

Q5004

+ B COP
DETECT

+B OCP

DZ

IC6505

+B OVP

+B

R5013

1

DZ

D5005

5V

Q6522

2

3

FOLLOWER

KD-30XS955/34XBR960/34XS955/36XS955

9

KD-30XS955/34XBR960/34XS955/36XS955

+B overcurrent (OCP)

Occurs when excessive current fl ows through R5013. The increase in voltage across R5013 causes the output of Q5004 to go high, and this high
signal goes to the micro.

+B overvoltage (OVP)

IC6505 detects +B OVP condition and turns on Q6522. This sends a high signal to the micro and also shuts down the AC relay.

V-STOP

Occurs when an absence of the vertical defl ection pulse is detected by pin 24 of IC2801 (BY Board). Power supply will shut down when waveform
interval exceeds 2 seconds.

White Balance Failure

If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be detected by IC2801. TV will stay on, but there will be
no picture.

*(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K).

Low B OCP/OVP

Occurs when set 5V is out.

Horizontal Defl ection Stopped

Occurs when either:

1) a +B overcurrent is detected (IC5007), or

2) overheating is detected (Thermistor TH5002).

KD-30XS955/34XBR960/34XS955/36XS955

10

1-1.REAR COVER REMOVAL

KD-30XS955/34XBR960/34XS955/36XS955

SECTION 1: DISASSEMBLY

4 Screws
+BVTP 4 x 16

Rear Cover

5 Screws
+BVTP 4 x 16

3 Screws
+BVTP 4 x 16

1-2.CHASSIS ASSEMBLY REMOVAL

1

Lift lever up on the right and left sides of the chassis

bracket and gently pull the chassis assembly away from
the bezel.

1-3.SERVICE POSITION

CAUTION! - Heat sink on IC5004 is -15V. Do not allow heat sink

to touch GND or any other components.
Heat sink on Q8018 VpK=250V, is -15V. Do not touch or
short to GND or any other components.

CAUTION!

1

2

- Pay attention to Neck Assembly WY Board wire
harness to BY Board. The WY Board can easily break if
there is sudden or excessive tension on the harness.

Lift lever up on the right and left sides of the chassis bracket

and gently pull the chassis assembly away from the bezel.

Pull up and rotate both the AZ and DZ Boards in order to

service the unit.

KD-30XS955/34XBR960/34XS955/36XS955

11

1-4.PICTURE TUBE REMOVAL

WARNING: BEFORE REMOVING THE ANODE CAP
High voltage remains in the CRT even after the power is disconnected. To avoid electric shock,
discharge CRT before attempting to remove the anode cap. Short between anode and CRT
coated earth ground strap.

KD-30XS955/34XBR960/34XS955/36XS955

Coated

Earth

Ground

Strap

1

2

8

11

1. Remove the Sub-Woofer Assemblies.

2. Discharge the anode of the CRT and remove the

anode cap.

9

7

3. Unplug all interconnecting leads from the defl ection

yoke, neck assembly, degaussing coils and CRT
grounding strap.

6

4

4. Remove the CX Board from the CRT.

5. Remove the chassis assembly.

6. Loosen the neck assembly fi xing screw and remove.

7. Loosen the defl ection yoke fi xing screw and remove.

3

8. Place the set with the CRT face down on a cushion

and remove the degaussing coil holders.

9. Remove the degaussing coils.

10

10. Remove the CRT grounding strap and spring tension

devices.

11. Unscrew the four CRT fi xing screws [located on each

5

CRT corner] and remove the CRT
[Take care not to handle the CRT by the neck].

ANODE CAP REMOVAL PROCEDURE

WARNING: High voltage remains in the CRT even after the power is disconnected. To avoid electric shock, discharge CRT before attempting to
remove the anode cap. After removing the anode cap, short circuit to either the metal chassis, CRT shield, or carbon painted on the CRT.

NOTE: After removing the anode cap, short circuit the anode of the picture tube and the anode cap to either the metal chassis, CRT shield or carbon
painted on the CRT.

REMOVAL PROCEDURES

a

Turn up one side of the rubber cap in
the direction indicated by arrow a .

b

Use your thumb to pull the rubber
cap fi rmly in the direction indicated
by arrow b .

HOW TO HANDLE AN ANODE CAP

1. Do not use sharp objects which may cause damage to the surface of the anode
cap.

2. To avoid damaging the anode cap, do not squeeze the rubber covering too
hard. A material fi tting called a shatter-hook terminal is built into the rubber.

3. Do not force turn the foot of the rubber cover. This may cause the shatter-hook
terminal to protrude and damage the rubber.

Anode Button

When one side of the rubber cap separates from
the anode button, the anode cap can be removed
by turning the rubber cap and pulling it in the
direction of arrow c .

c

KD-30XS955/34XBR960/34XS955/36XS955

12

CABLE WIRE DRESSING

.

P

n

)

)

DY-SHIELD (ALL MODELS)

NOTE which hole DY
leads are dressed in!

E.C.G. Leads

KD-30XS955/34XBR960/34XS955/36XS955

NOTE: IF THE WIRE

DRESSING IS NOT
DONE PROPERLY,
IT MAY CAUSE
DISTORTION

Rotation
COIL

9mm purselock
Attach to Rotation
Coil ABOVE DY CLI

DGC purselock
to hold DY Leads.

DGC Restraint Cable

E.C.G.

DY

Keep DY leads
away from B-Bd
(Noise Problems)

DCG/LCC CAUTION POINTS (ALL MODELS)

LCC

Coil

(Top)

Cable Tie

Dress DGC
leads through

Cable Ties!

Cable Tie

LCC

Coil

(Top)

Rotatio
COIL

DY

9mm purselock
attached to
Rotation Coil
ABOVE DY CLIP

ADHESIVE STRIPS

Place OVER ECG.

ECG MUST touch CRT in

this area!

!

Rev. 1
6/21/04

LCC

Coil

(Bottom

!

NOTE: MAKE SURE Cable Tie is
positioned so it does NOT
touch LCC COIL Wires! DO

[ DL ]

CN5805

NOT apply Cable Tie over
white/black LCC Tape!

!

NOTE: MAKE SURE wires are
not too tight! Leave some
Slack!

Rev. 1
6/28/04

KD-30XS955/34XBR960/34XS955/36XS955

LCC

Coil

(Bottom

To CN504/505

on A-Board

13

200V LEAD WIRE DRESSING CAUTION POINT (ALL MODELS)

Dress wires with
ONE LOOP in

[CX]

CLP9003

CN9002

CRT SOCKET

Clamp!

KD-30XS955/34XBR960/34XS955/36XS955

CLP9002

CN9003

ECG

SIDE VIEW

[WY]

3WIRE, 4p Conn. Assy.
p/n: 1-900-807-06

CN9004

ECG

B-Side

CN9109
G2

[CX]

CN9002

!

Dress Wire in Clamp
With ONE Loop.
The Loop Will take the
Stress off the
Connector
Header CN9002.

REV-1
6/28/04

KD-30XS955/34XBR960/34XS955/36XS955

14

KD-30XS955/34XBR960/34XS955/36XS955

POD EJECT BUTTON CAUTIONS - ALIGNMENT CHECK (ALL MODELS)

This was a defect from Pre-Pro set. Important to check alignment of POD Eject Buttom.
VERY important if QBOX is replaced in the field.

POD EJECT BUTTON CAUTIONS - NG BUTTON POSITION (ALL MODELS)

KD-30XS955/34XBR960/34XS955/36XS955

15

KD-30XS955/34XBR960/34XS955/36XS955

POD EJECT BUTTON CAUTIONS - STEP 1 BEFORE INSERT CARD (ALL MODELS)

POD EJECT BUTTON CAUTIONS - STEP 2 INSERT CARD (ALL MODELS)

KD-30XS955/34XBR960/34XS955/36XS955

16

G2 WIRE ROUTING (ALL MODELS)

(ALL Models)

G2 WIRE
1-900-808-42

Dress wire in
“L” Shape.

FBT

REAR VIEW

KD-30XS955/34XBR960/34XS955/36XS955

REV-1
5/03/04

U-Bracket

Wire Holder
p/n: 4-065-850-11

O.K. CONDITION

SIDE VIEW

FBT

U-Bracket

Wire Holder
p/n: 4-065-850-11

!

G2 Wire MUST be routed correctly
so that the wire does NOT touch
Rear Cover (Causes “Buzzing” sound)
Route wire in front of U-Bracket!

N.G CONDITION

SIDE VIEW

N.G!
Wire can touch
Rear Cover!!

FBT

U-Bracket

KD-30XS955/34XBR960/34XS955/36XS955

17

WOOFER ARM WIRE DRESSING CAUTION (KD-34XBR960 ONLY)

L

E

E

KD-30XS955/34XBR960/34XS955/36XS955

Woofer Arm
Supporter

Woofer Arm

O. K.
Condition!

LCC

CRT

Make sure Woofer Arm does NOT
touch the LCC Coil!!
Weight of Woofer & Woofer Arm can
damage LCC if the Arm Supporter is
touching the Coil!!

SIDE VIEW

LCC

DY

Woofer Arm

N.G.
Condition!

Woofer Arm
Supporter

LCC

LCC

CRT

!

Touch!
N.G.

Rev. 1
6/28/04

CRT PREP CAUTION POINT (KD-34XBR960 ONLY)

4-079-129-21

50 x 20mm Himelon Tape

(Align with edge of Pierce [D Cut-Out] on HS-BAND)

!

ALIGN TAPE WITH EDG
OF D CUT-OUT
(TOLERANCE +-5mm)

ALIGN TAPE WITH EDG
OF D CUT-OUT
(TOLERANCE +- 5mm)

Bottom of
16X9 CRT

FRIT LINE

D Cut-Out

HS - BAND

FRONT PANE

D Cut-Out

Rev. 1
6/28/04

KD-30XS955/34XBR960/34XS955/36XS955

18

DGC ASSEMBLY CAUTION POINT (KD-34XBR960 ONLY)

N

T

T

T

T

N

Caution:
Make sure
hook is
secure on CR
pierce!

!

Caution:
Make sure
hook is
secure on CR
pierce!

1-900-803-55

DGC Restraint Cable

Wrap 2 TIMES (for 34W)
CHECK for NO SLACK O
WIRE!

!

KD-30XS955/34XBR960/34XS955/36XS955

!

DY

Wrap 2 TIMES (for 34W)
Wrap 4 TIMES (for 30W)
CHECK for NO SLACK O
WIRE!

1-900-803-55

DGC Restraint Cable

DGC

Caution:
Make sure Cable
Tie is TIGHTENED
once CRT is in
Vertical postion.

Caution:
Make sure
hook is

!

secure on CR
pierce!

!

CRT BRKT

34XBR p/n:4-093-523-xx

EGC WIRE DRESSING (KD-34XBR960 ONLY)

WIRE HOOK
4-097-355-01

Caution:
Make sure
hook is

!

secure on CR
pierce!

Caution:
Make sure Cable
Tie is TIGHTENED
once CRT is in
Vertical postion.

Rev. 1
6/28/04

NOTE: Leads are
dressed inside
Rotation Coil.

Rotation

SPRING
4-065-852-01

COIL

ECG - P/N’s
1-900-808-04 - 34 W CRT

DY

CRT BRKT

KD-30XS955/34XBR960/34XS955/36XS955

NOTE2: There are
2 Leads (TOTAL 4
Wires) to connect
to CX

SPRING
4-065-852-01

Rev. 1
6/28//04

19

CRT GROUND WIRE CAUTION POINT (KD-34XBR960 ONLY)

(

OK INSTALLATION w/ Countermeasure

DGC

DGC Tension Cable
p/n: 1-900-803-55
2-Loops for 34XBR

DGC

KD-30XS955/34XBR960/34XS955/36XS955

Himelon Tape
p/n: 4-079-129-21
Center Tape over the
END of the tension spring.

* Make sure DGC tension Cable (p/n:1-900-803-55)

does NOT cross over Tension Spring (p/n:4-065-852-01)!!
* Tension spring must NOT touch LCC Coils!
* CRT Ground Wire is CENTERED (as best as possible) upon

installation (so spring will not touch LCC Coil).
* DGC Tension Cable is CENTERED (as best as possible) upon
Installation

CRT Ground Wire
34XBR: 1-900-808-04

LCC Coil

LCC Coil

!

so that cable does not touch spring).

Himelon Tape
p/n: 4-079-129-21
Center Tape over the
END of the tension spring.

REV-1
6/28/04

N-S COIL WIRE DRESSING CAUTION POINT (KD-34XBR960 ONLY)

NOTE:
Thicker taping of N-S Coil
is clipped to Beznet Here.

North-South Coil (N-S)
1-424-695-11 (34XBR)

!

Make sure wires are routed
on the OUTSIDE of CRT
Support Bracket.

!

CAUTION:
Make sure direction of lead wires is
COUNTER-CLOCK-WISE!

DIRECTION OF LEAD WIRES

CRT BRKT X2

p/n: 4-093-523-XX (34XBR)

Rev.1
6/28/04

KD-30XS955/34XBR960/34XS955/36XS955

20

KD-30XS955/34XBR960/34XS955/36XS955

gp

e

SPEAKER ASSY. WIRE DRESSING - LEFT SPEAKERS (KD-34XBR960 ONLY)

Make sure tweeter
terminals are facing
AWAY from CRT!

CLAMP

P/N: 4-857-472-01
4X16mm Screw
p/n: 7-685-663-99
TORQUE: 12kg-cm +-1

Hold Capacitor down with Himelon tap
(to prevent vibration and touching CRT

HIMELON TAPE

P/N: 4-079-129-21
(2-PLACES)

+

Make sure Tweeter
leads do NOT touch
Beznet Rib (dashed
line)!!
Wires can Pinch when
Rear Cover is installed!

!

CRT

CLAMP

P/N: 4-857-472-01
4X16mm Screw
p/n: 7-685-663-99
TORQUE: 12kg-cm +-1

Rev. 1
6/28/04

KD-30XS955/34XBR960/34XS955/36XS955

21

KD-30XS955/34XBR960/34XS955/36XS955

SPEAKER ASSY. WIRE DRESSING - RIGHT SPEAKERS (KD-34XBR960 ONLY)

+

!

Make sure tweeter
terminals are facing
AWAY from CRT!

CLAMP

P/N: 4-857-472-01
4X16mm Screw

!

Make sure Tweeter
leads do NOT touch
Beznet Rib (dashed
line)!!
Wires can Pinch when
Rear Cover is installed!

p/n: 7-685-663-99
TORQUE: 12kg-cm +-1

Hold Capacitor down with Himelon tape
(to prevent vibration and touching CRT

HIMELON TAPE

P/N: 4-079-129-21
(2-PLACES)

CRT

CLAMP

P/N: 4-857-472-01
4X16mm Screw
p/n: 7-685-663-99
TORQUE: 12kg-cm +-1

+

Rev. 1
6/28/04

WOOFER ASSY. WIRE DRESSING (KD-34XBR960 ONLY)

Bundle slack
in Purselock.

Cable Tie

ANODE LEAD

DY

Purselock 4-072-499-01

(Install on Woofer Support Arm- Use

purselock hole on the LEFT side.)

ev. 1

/28/04

CRT Bracket

To FBT

KD-30XS955/34XBR960/34XS955/36XS955

[A]

CRT Bracket

22

CHASSIS DRESSING - HBZ BOARD AND USB (KD-34XBR960 ONLY)

1-900-808-02: 4P Conn Assy. w/RED housings
Dressed OUTSIDE 9mm black purselock

iLINK Cable (1-823-515-31) & 1-900-806-83: 11P Conn. Assy.
w/RED Taping. Dressed INSIDE 9mm black purselock.

1-900-805-24 Double Ground Wire w/ferrite core
(p/n: 1-500-082-11)
NOTE: Tab on AZ-Bd (CN 519) is bent over in 45degree angle.

USB Cable (p/n:1-829-191-11) black cable routed in H-Bracket
clips.

KD-30XS955/34XBR960/34XS955/36XS955

iLINK Cable (1-823-515-31) w/ I Holder plastic clip on HBZ-Bd
(p/n: 4-082-405-01)

CHASSIS DRESSING - QH BOARD (KD-34XBR960 ONLY)

1-900-805-24 dressed in H-bracket clips. USB CABLE dressed in H-Bracket clips.
NOTE: Mounted tab on QH board is bent 45degrees. NOTE Over-Molded Ferrite Position (important for EMI).
Also note ferrite core position (important for EMI).

KD-30XS955/34XBR960/34XS955/36XS955

23

KD-30XS955/34XBR960/34XS955/36XS955

CHASSIS DRESSING - WY AND CX CONNECTORS (KD-34XBR960 ONLY)

BOTH Connectors
Assys.
Connect to WY-BD

p/n: 1-900-808-02
w/ RED housing
(WY-Bd to DL-BD)

p/n: 1-900-808-32
6P Conn. Assy.
(BY-Bd to WY-BD)

11P Conn. Assy. w/Yellow Taping (p/n: 1-900-806-86) routed to CX-Bd. This end of 1-900-806-86 connects to CX-Bd
NOTE: This Conn. Assy. Is routed INSIDE the 9mm black purselock. NOTE: KNOT is only for picture. DO NOT knot

NOTE: 1-900-808-32, 6P Conn. Assy. Is routed INSIDE clamp (p/n: 4-857-472-01)

wires during actual dressing.

WIRE DRESSING - QBOX DRESSING (KD-34XBR960 ONLY)

KD-30XS955/34XBR960/34XS955/36XS955

24

KD-30XS955/34XBR960/34XS955/36XS955

WIRE DRESSING - QBOX DRESSING WITH CAUTIONS (KD-34XBR960 ONLY)

1-900-808-41 is dressed as far
BACK as possible
EMI Reasons

11mm purselock. p/n:3-703-983-02
Qty=4

iLINK cable NOT dressed in this
purselock

Main bundle dressed low as
possible. EMI Reasons

DO NOT let wires touch Cement
Resistor or heat sink

WIRE DRESSING - FERRITE ADDITIONS (KD-34XBR960 ONLY)

LOCATIONS OF FERRITE CORES
EFFECT EMI PERFORMANCE.
Please use caution when positioning ferrite cores!

KD-30XS955/34XBR960/34XS955/36XS955

25

WIRE DRESSING - TOP OF QBOX (KD-34XBR960 ONLY)

KD-30XS955/34XBR960/34XS955/36XS955

1-900-805-24 ground
wire attached here
on Antenna Switch

Note direction of
purselocks and
postion of ferrite cores

Ferrite Core: NOTE LOCATION- IMPORTANT for EMI Ferrite Core: NOTE LOCATION- IMPORTANT for EMI
p/n: 1-500-484-21 p/n: 1-543-793-11
TDK ZCAT-2017-0930-M TDK ZCAT-1325-0530A

WIRE DRESSING - ANT SW GROUND WIRE (KD-34XBR960 ONLY)

1-900-805-24 ground wire is dressed in wire clamp. p/n: 4-857-472-01
Wire is dressed BEFORE securing position of Antenna Switch.

KD-30XS955/34XBR960/34XS955/36XS955

26

WIRE DRESSING - F-PIN DRESSING (KD-34XBR960 ONLY)

KD-30XS955/34XBR960/34XS955/36XS955

Note position (rotation of right-angle connector) of the cable/ferrite.
Do NOT dress the ferrite core so it can touch the Heat sink on the POD connector (not installed in this photo)

WIRE DRESSING -FRONT OF Q BOX (KD-34XBR960 ONLY)

NOTE " Z " Routing of USB Cable routing (important for EMI).
Position of Ferrite Core is Important for EMI.

KD-30XS955/34XBR960/34XS955/36XS955

27

KD-30XS955/34XBR960/34XS955/36XS955

WIRE DRESSING - 11MM P BOARD CONNECTION (KD-34XBR960 ONLY)

KD-30XS955/34XBR960/34XS955/36XS955

28

DCG LEAD WIRE DRESSING (ALL EXCEPT KD-34XBR960)

STEP1:
Make a loop in leads
and route loop BEHIND
The DGC Coil.

STEP 2:
Thread both connector
housings through the
loop in lead wires.

STEP 3:
Plug in connector
housings into the
[AZ] Board using the
loop to take up slack.

DY

Cable Tie
4-041-041-02

KD-30XS955/34XBR960/34XS955/36XS955

Rev. 1
5/10/04

KD-30XS955/34XBR960/34XS955/36XS955

29

T

T

DGC ASSEMBLY CAUTION POINT (KD-30XS955/34SX955 ONLY)

KD-30XS955/34XBR960/34XS955/36XS955

DGC

2-022-978-01

Wire Clip (2 Places)

1-910-000-13

DGC Restraint Cable

Caution:
Make sure Cable
Tie is TIGHTENED
once CRT is in
Vertical postion.

Caution:
Make sure
hook is

!

secure on CR
pierce!

!

Wrap x5 LOOP (for 30W)
Wrap x2 LOOP (for 34W)
NO SLACK ON WIRE!

DY

!

Wrap x5 LOOP (for 30W)
Wrap x2 LOOP (for 34W)
NO SLACK ON WIRE!

CRT BRACKET

1-900-803-55

DGC Restraint Cable

Caution:
Make sure
hook is

!

secure on CR
pierce!

Caution:
Make sure Cable
Tie is TIGHTENED
once CRT is in
Vertical postion.

Rev. 1
7/12/04

EGC WIRE DRESSING (KD-30XS955/34SX955 ONLY)

NOTE2: There are
2 Leads (TOTAL 4
Wires) to connect

2-022-978-01

Wire Clip (2 Places)

NOTE: Leads are
dressed inside
Rotation Coil.

Rotation
COIL

ECG - P/N
1-900-808-30 - 30 WCRT
1-900-808-31 - 34W CRT

to CX-Board

DY

CRT BRKT

SPRING (2 places)

Integral part of
the Ground wire

Rev. 1
7/12/04

KD-30XS955/34XBR960/34XS955/36XS955

30