KE-42MR1 (serv.man2) — Sony TV Service Manual (repair manual)

Model
KE-42MR1 (serv.man2)
Pages
127
Size
13.33 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
ke-42mr1-sm2.pdf
Date

View Sony KE-42MR1 (serv.man2) Service Manual online

SERVICE MANUAL
SPECIFICATIONS
KE-42MR1
FLAT PANEL COLOR TV
Korea Model
Panel System
Plasma Display panel
Display resolution
Display resolution:
(horizontal) 
×
 768 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.
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, P
B
, P
R
)
Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative; 
P
B
: 0.7 Vp-p, 75 ohms
P
R
: 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
1
1
3 total
6 total
1024 pixels
KE-42MR1(K)
2
(
)
Sub woofer (OUT)
1
2
1
phono jack
RF Input
Converter
Supplied Accessories
Remote Control
RM-929Y
AAA (LR03) Batteries (2)
AC power code (2)
AC plug holder (1)
Display interface cable (1)
Antenna cable (1)
Cleaning cloth (1)
Screen Size (measured diagonally)
KE-MR1
42 inches
Speaker Output
15W 
×
 2 
Dimensions (W 
×
 H 
×
 D) 
PDM-4200
1352 
×
 720 
×
 102 mm
MBT-MR1
430 
×
 105 
×
 360 mm 
Design and specifications are subject to change without notice.
Mass
Display unit
PDM-4200: 39kg
Media receiver unit
MBT-MR1: 7.5kg
Power Consumption
Display unit
PDM-4200: 460 W
Media receiver unit
MBT-MR1: 36 W
In Standby
In Use
Under 1.5 W
KE-42MR1(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-
dered 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 tran-
sistors, 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 recom-
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.
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” indica-
tion 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 bat-
tery operated digital multimeters that have a 2 V AC range
are suitable.  (See Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k
0.15 
µ
F
AC
Voltmeter
(0.75 V)
To Exposed Metal
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 AP-
PEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE-
MENTS 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 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.
KE-42MR1(K)
4
DIAGNOSIS
(Reliability Self Diagnostic Display Specifications for MEDIA RECEIVER)
1) *Operation count is based on WDT.
*For flashes, the Power/Standby LED flashes in red.
*The flash period is based on the reliability standard.
The abnormal conditions are indicated by the following LED flashes.
Flash Count Error Display Name Error Description
Oprating Detection
Port
4
Fan Error
Error detected for
Detects Low when fan 
IC6200 pin #2 
fan box
function normally. 
Detects High when Fan stops 
abnormally
8
Digtal OVP 
OVP for DD Con-  Detects High when normal.
IC5210 pin #49
verter on DP board Detects Low  when abnormal.
9
Panel Error
Panel malfunction Detects during communication 
detected with 
panel. 
Repair part
 FAN
 FAN CONNECTOR
 SET 11V LINE
 SET 5V   LINE
DP board
 Q1612, Q1613, Q1614
Panel Display Unit
*A failure part can be expected by the number of times of blink of LED. 
*When two failures occur, the failure item generated previously is detected. 
*When failure occurs simultaneously, an item with little number of times of blink is detected.
*In other than “Fan Error”, the unit is in standby state and blink LED at intervals of regulation. 
In “Fan Error”, the unit is in a standby state after display for 1 minute about the message of “Fan problem –   
Powering down”
every about 0.3s
about 3s
• Timing of LED blink (example of 4 times blink)
ON
OFF
In the following case, POWER LED of Media Receiver Box blinks at a fixed interval in ORANGE
When the cable which connects between Media Receiver Box and Panel Display has fallen out.
When the AC code for Panel Display has fallen out.
In the following case, POWER LED of  Panel Display blinks at a fixed interval in ORANGE
When the cable which connects between Media Receiver Box and Panel Display has fallen out.
When the AC code for Media Receiver Box has fallen out.
2)
The example which judges whether it is failure
• 
POWER LED of Media Receiver Box: Blink 9 times in RED, and of Panel Display blink,
and No picture or Power circuit does not work 
 Large possibility that Panel Display is out of order. 
When turn on Media Receiver Box, and NO LED of Box shine  
When NO Blue  LED of Box shine 
 Large possibility that Media Receiver Box is out of order.   
Check SET5V or IIC line on H1 board.
When turn on Media Receiver Box, and Fan does not work
 
 Large possibility that Media Receiver Box is out of order
3)
 
 Large possibility that Media Receiver Box is out of order. 
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Download Sony KE-42MR1 (serv.man2) Service Manual (Repair Manual)

Here you can view online or download Sony KE-42MR1 (serv.man2) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony KE-42MR1 (serv.man2) TV. Information contained in Sony KE-42MR1 (serv.man2) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).