KE-MR61M2 — Sony TV Service Manual (repair manual)

Model
KE-MR61M2
Pages
127
Size
18.86 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
ke-mr61m2.pdf
Date

View Sony KE-MR61M2 Service Manual online

SERVICE MANUAL
SPECIFICATIONS
MR2 
CHASSIS
KE-MR61M2
FLAT PANEL COLOR TV
China Model
PDM-6110
Power requirements
Power consumption (W)
Display unit
PDM-6110
220 V AC, 50 Hz
220 V AC, 50 Hz
Media receiver unit
MBT-MR2
Indicated on the rear of media receiver unit
Television system
Color system
Stereo/Bilingua system
B/G, I, D/K
PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58 
NICAM Stereo/Bilingual B/G, I, D/K
Channel coverage
B/G
VHF : E2 to E12 / UHF : E21 to E69 / CATV : S01 to S03, S1 to S41
I
D/K
M
VHF/UHF (antenna)
Audio output (Speaker)
UHF : B21 to B68 / CATV : S01 to S03, S1 to S41
VHF : C1 to C12, R1 to R12 / UHF : C13 to C57, R21 to R60/      
CATV : S01 to S03, S1 to S41, Z1 to Z39
VHF : A2 to A13 / UHF : A14 to A79/ 
CATV : A-8 to A-2, A to W+4, W+6 to W+84 
75-ohm external terminal
13 W + 13 W (4
Ω)
MBT-MR2
KE-MR61M2 (CH)     2
Design and specifications are subject to change without notice.
WOOFER OUT (VAR)
i (Headphones)
Display resolution
Screen size
Dimensions (w/h/d, mm)
Mass (kg)
Output: 1
Phono jack
Output: 1
Stereo minijack
1365 pixels 
× 768 pixels
61 inches
Display unit
PDM-6110:
Media receiver unit
MBT-MR2:
430 
× 79 × 343 mm
1797 
× 937 × 110 mm
Display unit
PDM-6110:
71 kg
Media receiver unit
MBT-MR2:
4.7 kg
Number of terminal
 VIDEO (Video)
 AUDIO (Audio)
 S VIDEO
(S Video)
 COMPONENT
VIDEO IN
(Component Video)
 COMPONENT
VIDEO IN
(G/B/R/HD/VD
Video)
5
PC– CENTER SP IN
(Center Speaker)
Input: 4    Output: 1
Phono jacks; 1 Vp-p, 75 ohms
Input: 6    Output: 1
Phono jacks; 500 mVrms
Input: 4 
Y: 1 Vp-p, 75 ohms,
unbalanced, sync negative
C: 0.286 Vp-p, 75 ohms
Input: 2
Phono jacks
Y: 1 Vp-p, 75 ohms, sync negative
PB/CB: 0.7 Vp-p, 75 ohms
PR/CR: 0.7 Vp-p, 75 ohms
Audio: 500 mVrms
Input: 1
Phono jacks
G: 0.7 Vp-p, 75 ohms
B: 0.7 Vp-p, 75 ohms
R: 0.7 Vp-p, 75 ohms
HD: 0.7 Vp-p, 75 ohms
VD: 0.7 Vp-p, 75 ohms
Input:1
120 W max., 8 ohms
KE-MR61M2 (CH)     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 cer-
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.
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 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
0.15 
µF
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 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.
KE-MR61M2 (CH)     4
SELF DIAGNOSIS FUNCTION
1. Outline of Self-Diagnosis Function
• This device includes a self-diagnosis function.
• In case of abnormalities, the POWER/STANDBY indicator sutomatically blinks.
• It is possible to predict the sbnormality location by the number of blinks.
• The instruction manual describes blinking of the POWER/STANDBY indicator.
• If the symptom is not reproduced sometime in case of a malfunction, there is recording of whether a malfunction was generated or
not.
Operate the remote command to confirm the matter on the screen and to predict the location of the abnormality.
2. Diagnosis Iteams and Prediction of Malfunction Location
• When a malfunction occure the POWER/STANDBY indicators only blinks for one of the following diagnosis items.
• In case of two or more malfunctions, the item which first occurred blinks.
If the malfunctions occurred simultaneously, the item whith the lower blink count blinks first.
<Maifunction location by the number of blinks>
Number of times
symptom
POWER/STANDBY
Indicators blinks
4 times (RED)
Fan Error
6 times (RED)
Low-B Error
9 times (RED)
Panel Module Error (Display Unit Error)
Page of 127

Download Sony KE-MR61M2 Service Manual (Repair Manual)

Here you can view online or download Sony KE-MR61M2 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony KE-MR61M2 TV. Information contained in Sony KE-MR61M2 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).