Sony WEGA KE-50XBR900, KE-42XBR900 Bedienungsanleitung

SERVICE MANUAL

SPECIFICATIONS

KE-50XBR900

FLAT PANEL COLOR TV

US Model

Canadian Model

Panel System Plasma Display panel

Display resolution Display resolution:

1365 pixels (horizontal) ×768 pixels (vertical)

Antenna 75 ohm external terminal for VHF/UHF

Television System NTSC, American TV Standard

Channel Coverage VHF 2-13

UHF 14-69

CATV 1-125

Power Requirements 120V, 60 Hz

Inputs/Outputs

DVI-HDTV 1 terminal, 3.3V T.M.D.S., 50 ohms

The DVI-HDTV input terminal is compliant with the EIA-861 standard and is not

intended for use with personal computers.

Video (IN) 3 total (1 on front panel) 1 Vp-p, 75 ohms unbalanced, sync negative

S Video (IN) (1 on front panel) Y: 1 Vp-p, 75 ohms unbalanced, sync negative

C: 0.286 Vp-p (Burst signal), 75 ohms

Audio (IN) (1 on front panel) 500 mVrms (100% modulation)

Impedance: 47 kilohm

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

PB: 0.7 Vp-p, 75 ohms

PR: 0.7 Vp-p, 75 ohms

CONTROL S (OUT)

Variable/Fixed Audio (OUT) More than 408 m Vrms at the maximum volume

setting (Variable)

More than 408 mVrms (Fixed)

Impedance (output): 2 kilohms

Monitor/Fixed Audio (OUT) ×1

3 total

6 total

KE-50XBR900(UC) 2

Sub woofer (OUT) 1

phono jack

RF Input

Converte

Supplied Accessories Remote Control RM-927Y

AAA (LR03) Batteries 2 supplied for remote control

Screen Size (measured diagonally) KE-50XBR900 50 inches

Speaker Output 15W ×2

Dimensions (W ×H ×D) PDM-5000 1573 ×856 ×108 mm

(62

×33

×4

in)

MBT-XBR900 430 ×105 ×360 mm

(17 ×4

×14

in)

Desi

n and s

ecifications are sub

ect to chan

e without notice.

Mass Display unit

PDM-5000: 53kg (114 lbs)

Media receiver unit

MBT-XBR900: 7.5kg (16 lbs)

Power Consumption Display unit

PDM-5000: 480 W

Media receiver unit

MBT-XBR900: 36 W

In Standby

In Use

Under 1.5 W

KE-50XBR900(UC) 3

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 instruments.

2. A battery-operated AC milliammeter. 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 250

and Sanwa SH-63Trd are examples of a passive VOMs that are suitable.

Nearly all battery operated digital multimeters that have a 2 V AC range

are suitable. (See Fig. A)

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

contact 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 right.

Fig. A. Using an AC voltmeter to check AC leakage.

1.5 k

Ω

0.15 µFAC

Voltmeter

(0.75 V)

To Exposed Metal

Parts on Set

Earth Ground

SAFETY CHECK-OUT

KE-50XBR900(UC) 4

AVERTISSEMENT!!

ATTENTION AUX COMPOSANTS RELATIFS À LA SÉCURITÉ!!

LES COMPOSANTS IDENTIFIÉS PAR UNE TRAME ET UNE

MARQUE !SONT CRITIQUES POUR LA SÉCURITÉ. NE LES

REMPLACER QUE PAR UNE PIÈCE PORTANT LE NUMÉRO

SPECIFIÉ.LESRÉGLAGESDECIRCUITDONTL’IMPORTANCEEST

CRITIQUE POUR LA SÉCURITÉ DU FONCTIONNEMENT SONT

IDENTIFIÉS DANS LE PRÉSENT MANUEL. SUIVRE CES

PROCÉDURES LORS DE CHAQUE REMPLACEMENT DE

COMPOSANTS CRITIQUES, OU LORSQU’UN MAUVAIS

FONCTIONNEMENT EST SUSPECTÉ.

WARNING!!

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 ADJUST-

MENTS THAT ARE CRITICAL FOR SAFE OPERATION ARE

IDENTIFIED IN THIS MANUAL. FOLLOW THESE PROCEDURES

WHENEVER CRITICAL COMPONENTS ARE REPLACED OR IM-

PROPER OPERATION IS SUSPECTED.

KE-50XBR900(UC) 5

1. EXPLODED VIEWS

1-1. Display Unit (PDM-5000) ................................... 1-2

1-2. Media Receiver Unit-1 (MBT-XBR900) ............. 1-4

1-3. Media Receiver Unit-2 (MBT-XBR900) ............. 1-6

1-4. Packing Materials for Display Unit

(PDM-5000) ......................................................... 1-7

1-5. Packing Materials for Media Receiver Unit

(MBT-XBR900) .................................................. 1-8

2. ELECTRICAL PARTS LIST ............................... 2-1

TABLE OF CONTENTS

Section Title Page Section Title Page

KE-50XBR900(UC) 1-1

SECTION 1

EXPLODED VIEWS

• Items with no part number and no

description are not stocked because they

are seldom required for routine service.

• The construction parts of an assembled

part are indicated with a collation number

in the remark column.

• Items marked " * " are not stocked since

they are seldom required for routine

service. Some delay should be anticipated

when ordering these items.

The components identified !marked are

critical for safety.

Replace only with the part number specified.

Les composants identifiés par la marque

sont critiques pour la sécurité.

Ne les remplacer que par une pièce portant

le numéro spécifié.

KE-50XBR900(UC) 1-2

1-1. DISPLAY UNIT(PDM-5000)

#4 #4

#1 #1

#2 #2

19 20

21 33

16 17

KE-50XBR900(UC) 1-3

REF.NO. PART NO. DESCRIPTION REMARK REF.NO. PART NO. DESCRIPTION REMARK

1 A-1603-818-D SP (R) ASSY 3-8

2 A-1603-817-D SP (L) ASSY 3-8

3 4-091-706-01 GRILLE, SP

4 1-825-250-11 SPEAKER (5 CM)

5 1-825-251-11 SPEAKER (13X6 CM)

6 4-091-957-01 COVER (A), SCREW

7 1-825-249-11 SPEAKER (13X6 CM)

8 4-091-958-01 COVER (B), SCREW

9 4-091-991-01 BAR

10 4-091-675-01 SCREW, FIXED

11 * A-1401-891-B R2 BOARD, MOUNT

12 4-635-966-01 SCREW (HEX)

13 * A-1401-606-B R1 BOARD, MOUNT

14 2-433-598-01 HOLDER (LT-11U), WIRE

15 4-091-681-01 HOOK

16 * X-4041-100-1 COVER ASSY, REAR 17, 31

17 * 4-091-684-01 GASKET (ER)

18 1-763-961-11 FAN, D.C

19 * A-1401-892-A F2 BOARD, MOUNT

20 3-910-042-01 SPACER (A)

21 4-035-160-01 PURSE LOCK (S) (DIA. 12)

22 * A-1300-778-D G BOARD, COMPLETE

23 1-763-962-11 FAN, D.C

24 4-314-843-02 SCREW, TAPPING, +4X12

25 * A-1401-608-B F BOARD, MOUNT

26 * A-1401-609-B K BOARD, MOUNT

27 * A-1300-780-G P BOARD,COMPLETE

28 2-990-241-02 HOLDER (A), PLUG

29 !1-417-336-11 AC INLET

30 4-662-693-03 GRIP, M2.6 S HEAD(EG)

31 * 4-091-684-11 GASKET (ER)

32 X-4040-983-1 BRACKET (50) ASSY, U

33 4-374-745-11 CUSHION (A)

34 * 1-805-056-11 PLASMA DISPLAY PANEL

35 4-091-702-01 BOX (FL), SP

36 4-091-703-01 BOX (FR), SP

#1 7-682-973-49 +PSW 5X16

#2 7-685-663-79 +BVTP 4X16, TYPE 2, IT-3

#3 7-685-647-79 +BVTP 3X10, TYPE 2, IT-3

#4 7-682-663-09 +PSW 4X12

#5 7-682-948-09 +PSW 3X8

#6 7-685-648-79 +BV 3X12, TYPE 2, IT-3

#7 7-682-667-09 +PS 4X25

#8 7-685-533-19 +BTTP 2.6X6

#9 7-685-167-19 +PTP 4X35

KE-50XBR900(UC) 1-4

1-2. MEDIA RECEIVER UNIT-1(MBT-XBR900)

B BLOCK ASSY

78 79

82 83

#11

#12

#12#6

#12

#6 #5

#10

KE-50XBR900(UC) 1-5

REF.NO. PART NO. DESCRIPTION REMARK REF.NO. PART NO. DESCRIPTION REMARK

51 * A-1401-937-A H3 BOARD, MOUNT

52 X-4040-969-1 PANEL ASSY, FRONT 53-58

53 4-042-192-21 CATCHER, PUSH

54 3-703-035-11 SHAFT, DOOR

55 X-4040-970-2 DOOR ASSY

56 * 4-091-608-01 BUTTON, POWER

57 4-036-405-01 SPRING, COMPRESSION

58 4-045-250-51 DAMPER

59 1-771-787-11 SWITCH, RF ANTENNA

60 * A-1401-660-A U1 BOARD, MOUNT

61 * A-1401-938-A H4 BOARD, MOUNT

62 * A-1401-936-A H1 BOARD, MOUNT

63 * A-1300-807-B A BOARD, MOUNT

64 2-433-598-01 HOLDER (LT-11U), WIRE

65 1-763-659-11 FAN, DC

66 4-382-854-01 SCREW (M3X8), P, SW (+)

67 * 1-555-110-00 P-P CABLE

68 * 1-557-056-31 CABLE, P-P

69 * A-1401-935-A H2 BOARD, MOUNT

70 * A-1401-661-A U2 BOARD, MOUNT

71 * A-1401-934-A AD BOARD, MOUNT

72 * A-1401-662-B AU BOARD, MOUNT

73 * A-1300-944-B M BOARD, MOUNT

74 * A-1401-751-A MS2 BOARD, MOUNT

75 4-087-363-01 COVER, CONNECTOR

76 4-662-693-03 GRIP, M2.6 S HEAD (EG)

77 4-635-966-01 SCREW (HEX)

78 1-543-936-11 CORE (FPC)

79 * 4-091-624-01 PANEL (UC), REAR

80 1-763-962-11 FAN, D.C.

81 3-074-851-01 DAMPER (FAN 25)

82 X-4040-972-1 COVER ASSY, BOTTOM 83

83 3-078-830-01 FOOT

84 4-670-040-01 SCREW

85 3-682-691-00 NUT, WASHER HEXAGON

86 1-580-375-51 INLET 3P

87 * X-4041-313-1 ASSY, COVER TOP

#5 7-682-948-09 SCREW +PSW 3X8

#6 7-685-648-79 SCREW +BVTP 3X12 TYPE2 IT-3

#10 7-682-149-04 SCREW +P 3X10

#11 7-682-961-01 SCREW +PSW 4X8

#12 7-682-951-01 SCREW +PSW 3X14

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