Panasonic DMR-E53EG, DMR-E55EB, DMR-E55E User manual

Service Manual
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ORDER NO.DSD0403001C8
DVD Video Recorder
●DMR-E53EG
DMR-E55EB
DMR-E55EG
DMR-E55EBL
DMR-E55EP
Colour
(K).......................Black Type
(S).......................Silver Type

© 2004 Matsushita Electric Industrial CO., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
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Table Of Contents
COVER
1 Safety precautions
1.1 General guidelines
1.1.1 Leakage current cold check
1.1.2 Leakage current hot check (See Figure 1 .)
2 Prevention of Electrostatic Discharge (ESD) to Electrostatic Sensitive (ES) Devices
3 Precaution of Laser Diode
4 Handling the Lead-free Solder
4.1 About lead free solder (PbF)
5 Each Buttons
6 Taking out the Disc from RAM-Drive Unit when the Disc cannot be ejected by OPEN / CLOSE
button
6.1 Forcible Disc Eject
6.1.1 When the power can be turned off.
6.1.2 When the power can not be turned off.
6.2 When the Forcible Disc Eject can not be done.
7 Service Explorer
8 Self-Diagnosis and Special Mode Setting

8.1 Self-Diagnosis Functions
8.2 Special Modes Setting
8.3 Service Modes
9 Assembling and Disassembling
9.1 Disassembly Flow Chart
9.2 P.C.B. Positions
9.3 Top Case
9.4 Digital P.C.B.
9.5 Front Panel
9.6 Front (R) P.C.B.
9.7 DVD-RAM Drive
9.8 Rear Panel
9.8.1 Only Fan Motor
9.9 Main P.C.B.
9.10 Power P.C.B.
9.11 The Scart P.C.B.
9.12 VIF Decoder P.C.B. and Nicam Decoder P.C.B.
10 Service Fixture and Tools
11 Service Positions

11.1 Checking and Repairing of Power P.C.B.
11.2 Checking and Repairing of Main P.C.B.
11.3 Checking and Repairing of Digital P.C.B.
11.4 Checking and Repairing of DVD-RAM Drive
12 Adjustment Procedures
12.1 After replacing the RAM Drive with new one
12.2 When the unit does not operate normally after replacing the Timer Microprocessor with new one
13 Standard Inspection Specifications after Making Repairs
14 Voltage and Waveform Chart
14.1 Power P.C.B.
14.2 Main P.C.B.
14.3 Nicam Decoder P.C.B.
14.4 Scart P.C.B.
14.5 Front (R) P.C.B.
14.6 P9001 Connector
14.7 Waveform Chart
15 Abbreviations
16 Block Diagram
16.1 Power Supply Block Diagram

16.2 Analog Video Block Diagram
16.3 Analog Audio Block Diagram
16.4 Timer Block Diagram
16.5 Digital Block Diagram
16.6 Digital Block IC Pin Terminal Chart (TC1-18)
17 Schematic Diagram
17.1 Interconnection Schematic Diagram
17.2 Main Power Supply Schematic Diagram
17.3 Sub Power Supply Section (Main P.C.B. (1 / 5)) Schematic Diagram (P)
17.4 Main Net Section (Main P.C.B. (2 / 5)) Schematic Diagram (M)
17.5 Video I / O Section (Main P.C.B. (3 / 5)) Schematic Diagram (V)
17.6 Audio Main Section (Main P.C.B. (4 / 5)) Schematic Diagram (A)
17.7 Timer Section (Main P.C.B. (5 / 5)) Schematic Diagram (T)
17.8 Glue Net Section (Digital P.C.B. (1 / 4)) Schematic Diagram (GN)
17.9 AV Encoder / Real Time Stream Control (RTSC) Section (Digital P.C.B. (2 / 4)) Schematic
Diagram (EN)
17.10 AV Decoder / Main CPU Section (Digital P.C.B. (3 / 4)) Schematic Diagram (MC)
17.11 Audio I / O Section (Digital P.C.B. (4 / 4)) Schematic Diagram (AI)
17.12 VIF Decoder Schematic Diagram (For DMR-E55EB / EBL / EP)
17.13 VIF Decoder Schematic Diagram (For DMR-E53EG and DMR-E55EG)

17.14 Nicam Decoder Schematic Diagram
17.15 Scart Schematic Diagram
17.16 Front (R) Schematic Diagram
18 Print Circuit Board
18.1 Power P.C.B.
18.2 Main P.C.B.
18.2.1 Main P.C.B. (1 / 4 Section)
18.2.2 Main P.C.B. (2 / 4 Section)
18.2.3 Main P.C.B. (3 / 4 Section)
18.2.4 Main P.C.B. (4 / 4 Section)
18.2.5 Main P.C.B. Address Information
18.3 Digital P.C.B.
18.3.1 Digital P.C.B. (Component Side)
18.3.2 Digital P.C.B. (Foil Side)
18.3.3 Digital P.C.B. Address Information
18.4 VIF Decoder P.C.B. (For DMR-E55EB / EBL / EP)
18.5 VIF Decoder P.C.B. (For DMR-E53EG and DMR-E55EG)
18.6 Nicam Decoder P.C.B.
18.7 Scart P.C.B.

18.7.1 Scart P.C.B. (Section 1 / 2)
18.7.2 Scart P.C.B. (Section 2 / 2)
18.8 Front (R) P.C.B.
19 Exploded Views
19.1 Casing Parts & Mechanism Section 1
19.2 Casing Parts & Mechanism Section 2
19.3 Packing & Accessories Section
20 Replacement Parts List
21 Schematic Diagram for printing with A4
PV

1 Safety precautions
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1.1 General guidelines
1.1.1 Leakage current cold check
1.1.2 Leakage current hot check (See Figure 1 .)
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