Panasonic DMP-BDT300GA User manual

©Panasonic Corporation 2010.
Unauthorized copying and distribution is a violation
of law.
ORDER NO.CHM1005029CE
Blu-ray Disc Player
Model No. DMP-BDT300GA
DMP-BDT300GC
DMP-BDT300GN
DMP-BDT300PU
Vol. 1
Colour
(K).......................Black Type

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TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions----------------------------------------------- 4
1.1. General guidelines ---------------------------------------- 4
1.2. Caution for fuse replacement--------------------------- 4
1.3. Caution for AC cord(only for BDT300GC)----------- 6
2 Warning -------------------------------------------------------------- 7
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostatic Sensitive (ES) Devices -------------- 7
2.2. Precaution of Laser Diode------------------------------- 8
2.3. Service caution based on legal restrictions --------- 9
3 Service Navigation ----------------------------------------------10
3.1. Service Information --------------------------------------10
3.2. Combination of Multiple Pressing on the
Remote Control ------------------------------------------- 11
3.3. Entering Special Modes with Combination of
Multiple Pressing on the Remote Control ----------11
4 Specifications ----------------------------------------------------13
5 Location of Controls and Components ------------------15
6 Operating Instructions-----------------------------------------16
6.1. Taking out the Disc from BD-Drive Unit when
the Disc cannot be ejected by OPEN/CLOSE
button --------------------------------------------------------16
7 Service Mode -----------------------------------------------------17
7.1. Self-Diagnosis and Special Mode Setting ----------17
8 Service Fixture & Tools----------------------------------------27
9 Disassembly and Assembly Instructions ---------------28
9.1. Unit -----------------------------------------------------------28
9.2. BD Drive ----------------------------------------------------31
10 Measurements and Adjustments---------------------------37
10.1. Service Positions----------------------------------------- 37
10.2. Caution for Replacing Parts --------------------------- 40
11 Block Diagram --------------------------------------------------- 41
11.1. Overall Block Diagram ---------------------------------- 41
11.2. Power Supply Block Diagram------------------------- 42
11.3. Timer Block Diagram------------------------------------ 43
11.4. Audio Out Block Diagram ------------------------------ 44
11.5. Video Out Block Diagram ------------------------------ 45
12 Schematic Diagram -------------------------------------------- 46
12.1. Interconnection Schematic Diagram ---------------- 46
12.2. Power Supply Schematic Diagram ------------------ 47
12.3. FL Schematic Diagram --------------------------------- 48
12.4. Power SW Schematic Diagram----------------------- 49
12.5. OPEN/CLOSE SW Section Schematic
Diagram ---------------------------------------------------- 50
12.6. Video Out Section Schematic Diagram------------- 51
12.7. Audio Out Section Schematic Diagram------------- 52
13 Printed Circuit Board ------------------------------------------ 53
13.1. Power P.C.B. ---------------------------------------------- 53
13.2. Power SW P.C.B., OPEN SW and FL P.C.B. ---- 54
13.3. AV Out P.C.B. -------------------------------------------- 55
14 Appendix for Schematic Diagram ------------------------- 56
14.1. Voltage and Waveform Chart ------------------------- 56
15 Exploded View and Replacement Parts List ----------- 60
15.1. Exploded Views ------------------------------------------ 60
15.2. Electrical Replacement Parts List-------------------- 65

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1 Safety Precautions
1.1. General guidelines
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
1.1.1. Leakage current cold check
1. Unplug the AC cord and connect a jumper between the
two prongs on the plug.
2. Measure the resistance value, with an ohmmeter,
between the jumpered AC plug and each exposed metal-
lic cabinet part on the equipment such as screwheads,
connectors, control shafts, etc. When the exposed metal-
lic part has a return path to the chassis, the reading
should be between 1MΩand 5.2MΩ.
When the exposed metal does not have a return path to
the chassis, the reading must be .
1.1.2. Leakage current hot check
(See Figure 1.)
1. Plug the AC cord directly into the AC outlet. Do not use
an isolation transformer for this check.
2. Connect a 1.5kΩ, 10 watts resistor, in parallel with a
0.15μF capacitors, between each exposed metallic part
on the set and a good earth ground such as a water pipe,
as shown in Figure 1.
3. Use an AC voltmeter, with 1000 ohms/volt or more
sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the
voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of
the above measurements.
6. The potential at any point should not exceed 0.75 volts
RMS. A leakage current tester (Simpson Model 229 or
equivalent) may be used to make the hot checks, leakage
current must not exceed 1/2 milliampere. In case a mea-
surement is outside of the limits specified, there is a pos-
sibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the cus-
tomer.
1.2. Caution for fuse replacement

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1.2.1. Micro Fuse conducting check
This unit uses the Micro Fuse.
Check the Micro Fuse conducting using the Tester at the check points below.