Read Sony KE-MX42K1 Service Manual online
SERVICE MANUAL
SPECIFICATIONS
MR2
CHASSIS
KE-MX42K1
Plasma TV
Korea Model
Panel System
Plasma Display panel
Resolution
KE-MX42K1
1024 pixels (horizontal)
× 1024 pixels (vertical)
Antenna
75 ohm external terminal for VHF/UHF
Television System
NTSC
Channel Coverage
VHF
2-13
UHF
14-69
CATV
1-125
Power Requirements
220V, 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.
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 side panel)
1 Vp-p, 75 ohms unbalanced, sync negative
S Video (IN)
3 total (1 on side panel)
Y: 1 Vp-p, 75 ohms unbalanced, sync negative
C: 0.286 Vp-p (Burst signal), 75 ohms
C: 0.286 Vp-p (Burst signal), 75 ohms
Audio (IN)
6 total (1 on side panel)
500 mVrms (100% modulation)
Impedance: 47 kilohms
Impedance: 47 kilohms
KE-MX42K1 (K) 2
Design and specifications are subject to change without notice.
Component Video Input
2 (Y, P
B
, P
R
)
Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative;
P
P
B
: 0.7 Vp-p, 75 ohms
P
R
: 0.7 Vp-p, 75 ohms
CONTROL S (IN/OUT)
1
Variable/Fixed Audio (OUT)
1
1
e than 408 mVrms at the maximum volume
setting (Variable)
Mor
Mor
Mor
e than 408 mVrms (Fixed)
Impedance (output): 2 kilohms
Sub woofer (OUT)
1
Phono jack
RF Inputs
Screen Size (measured diagonally)
KE-MX42K1
42 inches
Speaker Output
15 W
× 2
Dimensions (W
× H × D)
KE-MX42K1
1229
× 753 × 286 mm
Mass
KE-MX42K1
38.0 kg
Power Consumption
In Use
KE-MX42K1: 430 W
In Standby
Under 1.5 W
Supplied Accessories
Remote Control (1)
RM-1009
AAA (LR03) Batteries (2)
AC power code (1)
Antenna cable (1)
Cleaning cloth (1)
Operating Instructions (1)
Warranty Card (1)
KE-MX42K1 (K) 3
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-sol-
following safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly-sol-
dered connections. Check the entire board surface for solder
splashes and bridges.
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 cer-
tain that you have replaced all the insulators.
tain that you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly transis-
tors, that were installed during a previous repair. Point them
out to the customer and recommend their replacement.
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 recom-
mend their replacement.
mend 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 antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC Leakage.
Check leakage as described right.
Check leakage as described right.
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
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.
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” indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOMs that are suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suit-
able. (See Fig. A)
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOMs that are suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suit-
able. (See Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k
Ω
0.15
µF
AC
Voltmeter
(0.75 V)
Voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
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 PUB-
LISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE
CRITICAL FOR SAFE OPERATION ARE IDENTIFIED IN
THIS MANUAL. FOLLOW THESE PROCEDURES WHEN-
EVER CRITICAL COMPONENTS ARE REPLACED OR
IMPROPER OPERATION IS SUSPECTED.
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 PUB-
LISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE
CRITICAL FOR SAFE OPERATION ARE IDENTIFIED IN
THIS MANUAL. FOLLOW THESE PROCEDURES WHEN-
EVER CRITICAL COMPONENTS ARE REPLACED OR
IMPROPER OPERATION IS SUSPECTED.
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. LES
RÉGLAGES DE CIRCUIT DONT L’IMPORTANCE EST
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.
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. LES
RÉGLAGES DE CIRCUIT DONT L’IMPORTANCE EST
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.
KE-MX42K1 (K) 4
TABLE OF CONTENTS
1. DISASSEMBLY ............................................. 1-1
1-1.
REAR COVER REMOVAL .............................. 1-1
1-2.
UD BOARD REMOVAL .................................. 1-2
1-3.
A1 AND J2 BOARDS REMOVAL ................... 1-2
1-4.
DE2, DIC2, J1 AND MS2A BOARDS
REMOVAL ........................................................ 1-3
1-5.
F AND K BOARDS REMOVAL ...................... 1-3
1-6.
H2 BOARD REMOVAL ................................... 1-4
1-7.
HM AND H1 BOARDS REMOVAL ................ 1-4
1-8.
SPEAKER BOX REMOVAL ............................ 1-5
1-9.
SWITCHING REGULATOR REMOVAL ....... 1-5
1-10. SHIELD ASSY REMOVAL .............................. 1-6
1-11. PLASMA DISPLAY PANEL REMOVAL ....... 1-6
1-12. H3 AND H4 BOARDS REMOVAL ................. 1-7
2. ADJUSTMENT .............................................. 2-1
2-1.
White Balance Adjustment ................................ 2-1
3. DIAGRAMS ................................................... 3-1
3-1.
BLOCK DIAGRAMS ........................................ 3-1
(1)
AE BOARD ................................................... 3-1
(2)
DE2(1/2) AND J2 BOARDS ......................... 3-2
(3)
DE2(2/2) BOARD ......................................... 3-3
(4)
J1 BOARD ..................................................... 3-4
(5)
DIC2 BLOCK ................................................ 3-5
(6)
H1, H2, H3, H4 AND K BOARDS ............... 3-6
(7)
HM AND UD BOARDS ............................... 3-7
3-2.
FRAME DIAGRAMS ........................................ 3-8
3-3.
CIRCUIT BOARDS LOCATION ..................... 3-9
3-4.
SCHEMATIC DIAGRAMS AND
PRINTED WIRING BOARDS ........................ 3-9
(1)
Schematic Diagrams of A1 Board ................. 3-10
(2)
Schematic Diagrams of DE2 Board .............. 3-14
(3)
Schematic Diagrams of DIC2 Board ............. 3-20
(4)
Schematic Diagram of H1 and H2 Boards .... 3-26
(5)
Schematic Diagram of H3 and H4 Boards .... 3-27
(6)
Schematic Diagram of HM and J2 Boards .... 3-28
(7)
Schematic Diagram of J1 Board .................... 3-29
(8)
Schematic Diagram of K Board .................... 3-30
(9)
Schematic Diagram of UD Board .................. 3-31
3-5.
SEMICONDUCTORS ....................................... 3-32
4. EXPLODED VIEWS ...................................... 4-1
4-1.
COVER AND STAND ...................................... 4-2
4-2.
SPEAKER .......................................................... 4-3
4-3.
CHASSIA-1 ........................................................ 4-4
4-4.
CHASSIA-2 ........................................................ 4-5
4-5.
PACKING MATERIALS .................................. 4-6
5. ELECTRICAL PARTS LIST ......................... 5-1
