KLV-MR30M1 - Sony TV Service Manual (repair manual)

klv-mr30m1 service manual
Model
KLV-MR30M1
Pages
127
Size
12.34 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
klv-mr30m1.pdf
Date

Read Sony KLV-MR30M1 Service Manual online

SERVICE MANUAL
SPECIFICATIONS
KLV-MR30M1
LCD Color TV
Chinese Model
Media Receiver Unit (MBT-MRL1C)
Power Requirement: 220V AC; 50 Hz
Power Consumption: 27W
Standby Power Consumption: 0.6W
Dimensions (w x h x d): 
Approx. 430 x 105 x 360 mm
Weight:
Approx. 6.0 kg
Display Unit (LDM-3000)
Power Requirement: 220 - 240V AC;
50/60 Hz
Screen Size: 30inches 
Approx. 76 cm measured 
diagonally
Display Resolution:
1280 dots (horizontal) x 768 lines 
(vertical)
Power Consumption: 150W
Standby Power Consumption: 0.1W
Dimensions (w x h x d):
Approx. 974 x 530 x 95 mm
Weight:
Approx. 20 kg
Approx. 27 kg (including stand)
TV system: 
D/K, B/G, I
Color system:
PAL, SECAM, NTSC
Channel Coverage:
VHF: 
E2 - E12
UHF: E 21 
E69
CATV: 
S1 - S20
HYPER: S21 
S41
D/K: 
R1 - R12, R21 - R69
I: 
UHF B21 - B69
Panel System:
LCD Display Panel
Antenna:
75 ohm external terminal for VHF/UHF
Rear Terminals:
1
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
video input (phono jack):
1 Vp-p, 75-ohms unbalanced, sync 
negative/audio input (phono jacks):
500 m Vrms (100% modulation), 
Impedance: 47 kilo ohms
2
video input (phono jack):
1 Vp-p, 75-ohms unbalanced, sync 
negative/audio input (phono jacks):
500 m Vrms (100% modulation), 
Impedance: 47 kilo ohms
3
video input (phono jack):
1 Vp-p, 75-ohms unbalanced, sync 
negative/audio input (phono jacks):
500 m Vrms (100% modulation), 
Impedance: 47 kilo ohms
4
Y: 1 Vp-p, 75 ohms, 0.3V negative sync
P
B
: 0.7 Vp-p, 75 ohms
P
R
: 0.7 Vp-p, 75 ohms
audio input (phono jacks)
500 m Vrms (100% modulation), 
Impedance: 47 kilo ohms
5
Y: 1 Vp-p, 75 ohms, 0.3V negative sync
P
B
: 0.7 Vp-p, 75 ohms
P
R
: 0.7 Vp-p, 75 ohms
audio input (phono jacks)
500 m Vrms (100% modulation), 
Impedance: 47 kilo ohms
KLV-MR30M1 (CH)      2
5 SUB WOOFER: phono jack
: audio outputs (Left/Right) - phono jacks
5 CENTER SPEAKER IN:
 Max. 180W (6-ohms)
CTRL S OUT: minijack
AV MOUSE: minijack
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
video input (phono jack):
1 Vp-p, 75-ohms unbalanced, sync 
negative/audio input (phono jacks):
500 m Vrms (100% modulation), 
Impedance: 47 kilo ohms
i 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:
10W x 2
Accessories supplied:
One Remote Control (RM-972)
Two size AAA alkaline batteries (R03 type)
One Display Interface Cable
One Coaxial Cable
One AV Mouse
Two AC power cord
Other features:
Sleep Timer
PC Input Timing:
Input signal frequency
Horizontal:  19 - 90 kHz
Vertical:
 48 - 85 Hz
Maximum Resolution: 1600 dots x 1200 lines
 
KLV-MR30M1 (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
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 connector shell, 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.
KLV-MR30M1 (CH)      4
DIAGNOSIS
(Reliability Self Diagnostic Display Specifications for MEDIA RECEIVER)
* Operation count is based on WDT.
* For flashes, the Power/Standby LED flashes in red.
* The flash period is based on the reliability standard.
LED
Status
MEDIABOX
PANEL
Problem Symptom
Digital 3.3V malfunction
Defective for cable 
connection
PANEL ALARM 
Defective for cable connection
Fan malfunction
Power protector operation
Mediabox
Panel
Shut down when Digital 3.3V becomes equal or under 0V.
The both White and Black interface cables are not connected with the panel.
The both White and Black interface cables are not connected with the MEDIABOX.
This unit has the following self diagnostic function. Refer to this table to identify a defective point in case of 
any malfunction.
POWER/STBY
Panel
 • flashes alternately
Flashes (1Hz)
• Flashes four times
• Flashes six times
• Flashes nine times
Flashes (1Hz)
-
-
-
+3.3V malfunction
PANEL malfunction
Defective for cable connection
PANEL ALARM (Not available for re-start)
Defective for cable connection
Defective for power voltage of fan, fan protection
Power protection on G board detected
-
-
The abnormal conditions are indicated by the following LED flashes.
Page of 127
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Here you can read online and download Sony KLV-MR30M1 Service Manual in PDF. KLV-MR30M1 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony KLV-MR30M1 TV. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.