Panasonic dmr ez 25 eb service manual

Page 1

Service

DMR-EZ25EB EUR7659YGO

Notes:
This model's RAM / Digital RC.B
Module are - RFKNEZZSEB

CAUTION:

Pairing of RAM Drive and Digital P.C.B. as 'RAM / DIGITAL
P.C.B. MODULE" have to be replaced together. If the pairing is
changed, RAM Drive uni1 has to be re-aligned. Because the
alignment data for RAM Drive Unit is stored in Digital P.C.B.

ORDER NO.MAD0606015CE

Manual

DVD Recorder

DMR-E225EB
Vol.1

Colour
(8) ....................... Silver Type

Manufactured under license from Dolby Laboratories. "Dolby
and double-D symbol are trademarks of Dolby Laboratories.

"DTS" and "DTS 2.0 + Digital Out" are trademarks of Digital
Theater Systems, Inc.

HDMI, the HDMI logo and Hight-Defininition Multimedia
Interface are trademarks or registered trademarks of HDMI
Licensing LLC.

- SD logo is a trademark.

0 Portions of this product are protected under copyright

- law and are provided under license by ARIS/SOLANA/4C.
- miniSDTM is a trademark of SD Card Association.

MPEG Layer-3 audio decoding technology licensed from
Fraunhofer IIS and Thomson multimedia.

Apparatus Claims of U.S. Patent Nos. 4,631,603, 4,577,216, and
4,819,098, licensed tor limited viewing uses only

HDAVI ControlTM is a trademark of Matsushita Electric Industrial
00., Ltd.

This product incorporates copyright protection technology that is
protected by method claims of certain U.S. patents and other
intellectual property rights owned by Macrovision Corporation
and other rights owners. Use oi this copyright protection
technology must be authorized by Macrovision Corporation. and
is intended for home and other limited viewing uses only unless
otheMise authomise authorized by Macrovision Corporation.
Reverse engineenng or disassembly is prohibited.

G-CODE is a registred trademark of Gemstar Development
Corporation. The G-cooE system is manufactured under license
from Gemstar Development Corporation.

Panasonic?

© 2006 Matsushita Electric Industrial 00., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.

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DMR-EZ25EB

A WARNING

This service information Is designed for experienced repair technicians only and Is not designed for use by the general public

It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

CONTENTS

1 SAFETY PRECAUTIONS
1.1. GENERAL GUIDELINES

2 WARNING ------------------------------------------------------------------------------- 4
2.1. PREVENTION OF ELECTROSTATIC DISCHARGE (ESD)

TO ELECTROSTATIC SENSITIVE (ES) DEVICES -4

2.2. PRECAUTION OF LASER DIODE--
2.3. SERVICE CAUTION BASED ON LEGAL RESTRICTIONS

..................................................................................... 6
3 SERVICE NAVIGATION ----------------------------------------------------------- 7
3.1. SERVICE INFORMATION- -7

4 SPECIFICATION

5 NEW FEATURE- .9

5.1. HDAVI CONTROL (HDMI LINK) ..................................... 9
6 LOCATION OF CONTROLS AND COMPONENTS .................. 11
7 OPERATING INSTRUCTIONS ................................................ 12

7.1. TAKING OUT THE DISC FROM DVD-DRIVE UNIT WHEN
THE DISC CANNOT BE EJECTED BY OPEN/CLOSE
BUTTON --------------------------------------------------------------------- 12

8 SERVICE MODE -------------------------------------------------------------------- 13

8.1. SELF-DIAGNOSIS AND SPECIAL MODE SETTING --13

9 SERVICE FIXTURE AND TOOLS
10 ASSEMBLING AND DISASSEMBLING
10.1. DISASSEMBLY FLOW CHART ------------------------------------ 23
10.2. P.C.B. POSITIONS ------------------------------------------------------ 23
10.3. TOP CASE
10.4. FRONT PANEL-
10.5. SD CARD P.C.B.
10.6. RAM DRIVE / DIGITAL P.C.B. MODULE ---------------------- 25
10.7. DV IN P.C.B. --------------------------------------------------------------- 26
10.8. POWER P.C.B.-
10.9. REAR PANEL
10.10. MAIN P.C.B. AND FRONT P.C.B
10.11. BACK END P.C.B. ---------------
10.12. TUNER P.C.B. AND TUNER ---------------------------------------- 28
10.13. HDMI P.C.B. ---------------------------------------------------------------- 29

11 MEASUREMENTS AND ADJUSTMENTS-
11.1. SERVICE POSITION ------------------

Page

11.2. CAUTION FOR REPLACING PARTS-- -33
11.3. STANDARD INSPECTION SPECIFICATIONS AFTER

MAKING REPAIRS ------------------------------------------------------ 34

11.4. ABBREVIATIONS -------------------------------------------------------- 35

12 BLOCK DIAGRAM --------------------- .37

12.1. POWER BLOCK DIAGRAM -37

12.2. ANALOG VIDEO BLOCK DIAGRAM -39
12.3. ANALOG AUDIO BLOCK DIAGRAM ............................. 40
12.4. TIMER BLOCK DIAGRAM ............................................ 41

-42
-43

12.5. HDMI BLOCK DIAGRAM
13 SCHEMATIC DIAGRAM

13.1. INTERCONNECTION -43
13.2. POWER SCHEMATIC DIAGRAM --------------------------------- 44
13.3. MAIN AV IO ----------------------------------------------------------------- 45
13.4. MAIN TIMER -46
13.5. MAIN DECODER .47
13.6. MAIN NET ------- -48
13.7. SD CARD / FRONT / DV IN ----------------------------------------- 49
13.8. HDMI --------------------------------------------------------------------------- 50
13.9. TUNER ------------------ -51
14 PRINTED CIRCUIT BOARD- '53
14.1. POWER P.C.B. ------ -53
14.2. MAIN P.C.B. ---------------------------------------------------------------- 54
14.3. TUNER P.C.B. / DV IN P.C.B. -------------------------------------- 56
14.4. SD CARD P.C.B. / FRONT P.C.B. -57
14.5. HDMI-- -58
15 APPENDIX FOR SCHEMATIC DIAGRAM -59
15.1. VOLTAGE AND WAVEFORM CHART -------------------------- 59
16 EXPLODED VIEWS ---------------------------------------------------------------- 63

16.1. CASING PARTS AND & MECHANISM SECTION
16.2. PACKING & ACCESSORIES SECTION
17 REPLACEMENT PARTS LIST -------------------

17.1. CASING PARTS & PRINTED CIRCUIT BOARDS --------- 65
17.2. PACKING & ACCESSORIES PARTS --------------------------- 55
17.3. ELECTRICAL PARTS .................................................. 65

17.4. SERVICE FIXTURE AND TOOLS-
13 DIAGRAMS FOR PRINTING WITH A4---