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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

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

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.

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.

Ω

µ

!

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.