Sony MBT-MR1 User manual

SERVICE MANUAL
SPECIFICATIONS
KE-50MR1
FLAT PANEL COLOR TELEVISION
AEP Model
Media Receiver Unit (MBT-MR1)
Power Requirement: 220-240V AC; 50/60 Hz
Power Consumption: 27 W
Standby Power Consumption: 0.6 W
Dimensions (w x h x d):
Approx. 430 x 105 x 360 mm
Weight: Approx. 6 kg
Display Unit (PDM-5000)
Power Requirement: 100-240V AC; 50/60 Hz
Screen Size: 50inches
Approx. 127 cm measured
diagonally
Display Resolution:
1365 dots (horizontal) x 768 lines
(vertical)
Power Consumption: 540W
Standby Power Consumption: 0.6W
Dimensions (w x h x d):
Approx. 1,573 x 856 x 108 mm
Weight: Approx. 53 kg
Panel System:
Plasma Display Panel
TV system:
Depending on your country selection:
B/G/H, D/K, L, I
Colour system:
PAL, SECAM
NTSC 3.58, 4.43 (only Video In)
Aerial:
75 ohm external terminal for VHF/UHF
Channel Coverage:
VHF: E2-E12
UHF: E21-E69
CATV: S1-S20
HYPER: S21-S41
D/K: R1-R12, R21-R69
L: F2-F10, B-Q, F21-F69
I: UHF B21-B69
Rear Terminals:
1/
21-pin Scart connector (CENELEC
standard) including audio/video input,
RGB input, TV audio/video output.
2/
21-pin Scart connector (CENELEC
standard) including audio/video input,
RGB input, TV audio/video output.
3/ (SMARTLINK; selectable)
21-pin Scart connector (CENELEC
standard) including audio/video input, S
video input, selectable audio/video
output and Smartlink interface.
4/ (SMARTLINK; selectable)
21-pin Scart connector (CENELEC
standard) including audio/video
input, RGB input, selectable audio/
video output, and Smartlink interface.
5
Y: 1 Vp-p, 75 ohms, 0.3V negative sync
PB: 0.7 Vp-p, 75 ohms
PR: 0.7 Vp-p, 75 ohms
5
audio input (phono jacks)
500 m Vrms (100% modulation),
Impedance: 47 kilo ohms
SUB WOOFER: phono jack
: audio outputs (Left/Right) - phono jacks
CENTRE SPEAKER IN:
Max. 180W (6-ohms)
CTRL S: minijack
AV MOUSE: minijack
S
5
55
5
5
55
5

KE-50MR1(AEP) 2
Front Terminals:
6
S video input (4-pin mini DIN):
Y: 1 Vp-p, 75-ohms unbalanced, sync
negative
C: 0.286 Vp-p (Burst signal), 75 ohms
6
video input (phono jack):
1 Vp-p, 75-ohms unbalanced, sync
negative
6
audio input (phono jacks):
500 m Vrms (100% modulation),
Impedance: 47 kilo ohms
headphones jack
PC PC Input (15-Dsub)
G: 0.7 Vp-p, 75 ohms, non Sync on Green
B: 0.7 Vp-p, 75 ohms, non Sync on Green
R: 0.7 Vp-p, 75 ohms, non Sync on Green
HD:1-5 Vp-p
VD:1-5 Vp-p
PC PC audio input: minijack
Memory Stick Slot
Sound Output:
15W x 2
Accessories supplied:
• One Remote Control (RM-972)
• Two size AAA batteries (R03 type)
• One Display Interface Cable
• One Coaxial Cable
• One AV Mouse
• Two Mains Leads (Type C-4)
• Two Mains Leads (Type BF)
• Two Mains Leads (Type C-5)
Main leads Type BF and Type C-5
may not be supplied depending on
the country.
• One Cleaning cloth
• One Mains plug holder
S
i
Other features:
•Teletext, Fastext, TOPtext
•Sleep Timer
•Smartlink (direct link between your TV set
and a compatible VCR. For more
informationon Smartlink,please referto the
Instruction Manual of your VCR).
It's available either 3 or 4.
(Selectable)
•TV system Autodetection
•Auto Format
PC Input Timing:
Input signal frequency
Horizontal: 15.6 - 90 kHz
Vertical: 48 - 85 Hz
Maximum Resolution: 1600 dots x 1200 lines

KE-50MR1(AEP) 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-50MR1(AEP) 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-50MR1(AEP) 5
1. EXPLODED VIEWS
1-1. Display Unit (PDM-5000) ................................... 1-2
1-2. Media Receiver Unit (MBT-MR1) ...................... 1-4
1-3. Packing Materials for Display Unit (PDM-5000) 1-6
1-4. Packing Materials for Media Receiver Unit
(MBT-MR1) ....................................................... 1-7
2. ELECTRICAL PARTS LIST ............................... 2-1
TABLE OF CONTENTS
Section Title Page Section Title Page

KE-50MR1(AEP) 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-50MR1(AEP) 1-2
1-1. DISPLAY UNIT(PDM-5000)
3
1
2
3
10
8
6
4
35
5
74
10
11
36
13
28
29
8
6
12
#7
#4 #4
#4
#4 #4
#1
#1
#5
#1
#1 #1
#1
#1
#2
#2
#2
#2
#2
#2
#2
#2
#2
#2 #2
#2
#2 #2
#2
#2
#2
#2
#2
#2
#2
#2
#2
#3
#3
#5
#6
#9
#5
#5
#5
#5
30
23
26
25
22
27
14
32
33
24
33
19 20
21 33
15
18
16 17
31
31
17
34
7
5
#8
#8
9
9

KE-50MR1(AEP) 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 +BV 4X16, TYPE 2, IT-3
#3 7-685-647-79 +BV 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-50MR1(AEP) 1-4
62 72
69
51 70 70
52 71
5476
55 5657
58
75
75
59
60 61
68
63
65
66 73
74
74
74
74
74
73
67
53
#6
#3
#3
#
10
# 13
# 13
# 10
#6
#6
#
12
#11
#6
#6
#6
#3
64
1-2. MEDIA RECEIVER UNIT(MBT-MR1)

KE-50MR1(AEP) 1-5
REF.NO. PART NO. DESCRIPTION REMARK REF.NO. PART NO. DESCRIPTION REMARK
51 X-4040-972-1 COVER ASSY, BOTTOM
52 X-4041-227-1 FRONT, PANEL ASSY
53 3-703-035-11 SHAFT, DOOR
54 X-4041-228-1 DOOR, ASSY
55 * 4-091-608-01 BUTTON, POWER
56 4-036-405-01 SPRING, COMPRESSION
57 4-045-250-51 DAMPER
58 * A-1401-791-A H4 BOARD, MOUNT
59 * A-1401-788-A H1 BOARD, MOUNT
60 * A-1401-785-A H2 BOARD, MOUNT
61 !1-580-375-61 INLET 3P
62 * A-1401-784-A U BOARD, MOUNT
63 * A-1300-862-A G2 BOARD, COMPLETE
64 * A-1401-787-A MS BOARD, MOUNT
65 * A-1300-860-A A COMPL
66 * A-1300-861-A TU BOARD, COMPLETE
67 4-091-605-02 COVER, TOP
68 * A-1401-790-A MSX BOARD, MOUNT
69 4-092-753-01 PANEL (AEP), REAR
70 3-078-830-01 FOOT
71 * A-1404-625-A H5 BOARD, MOUNT
72 4-662-693-03 GRIP, M2.6 S HEAD (EG)
73 4-670-040-01 SCREW
74 4-382-854-01 SCREW (M3X8), P, SW (+)
75 4-635-966-01 SCREW (HEX)
76 4-042-192-21 CATCHER, PUSH
#3 7-685-647-79 SCREW +BVTP 3X10 TYPE2 IT-3
#6 7-685-648-79 SCREW +BVTP 3X12 TYPE2 IT-3
#10 7-685-662-79 SCREW +BVTP 4X14 TYPE2 IT-3
#11 7-682-961-01 SCREW +PSW 4X8
#12 7-682-250-09 +K 3X12
#13 7-682-150-09 SCREW +P 3X12