Panasonic dmr ex 75 service manual

Page 1

ORDER NO.MAD0607OZOCE

Service Manual

DVD Recorder

DMRsEX75EG EUR7659YMO

DMR-EX75EB EUR7659YGO
DMRsEX75EC EUR7659T40
DMRsEXSSEG EUR7659YMO
DMR-EXSSEB EUR7659YGO

DMR-EX75EG
DMR-EX75EC
DMR-EX75EB
DMR-EX85EG
DMR-EX85EB

Vol.1

Colour
(S) ....................... Silver Type

NOTES:
This model's FlAM / Digital PCB
Module are < RFKNEX75EG

- FlFKNEX75EB

- RFKNEX75EC

- RFKNEXBSEG

- RFKNEX85EB

CAUTION:

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

When replacing with Main P.C.B. or EEPFlOM,"UNFOFtMA1"
indication is displayed and HDD must be formatted.

When replacing with HDD it is necessary to update the
firmware. Please prepare the update disc.
(After that, FORMAT is necessary)

After that, programme in the HDD will be lost.
In detail, please refer to each content in this service manual.

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.

- SD logo is a trademark.

0 Portions of this product are protected under copyright

- law and are provided under license by ARlS/SOLANA/4C,
- miniSD'" is a trademark of SD Card Association.

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

HDAVI ControlTM is a trademark of Malsushita Electric Industrial
Co.. Ltd.

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

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

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

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 of this copyright protection
technology must be authorized by Macrovision Corporation, and
is intended for home and other limited viewing uses only unless
otherwise autherwise authorized by Macrovision Corporation.
Reverse engineering or disassembly is prohibited.

Official DivX Certifiedl product.

Plays DivX®5, DivX®4, Dim, and Div® VOD video content (in
compliance with DivX Certified technical requirements).
DivX, DivX Certified. and associated logos are trademarks of
DivXNetworks, Inc. and are used under license.

Panasonic®

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

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DMR-EX75EG / DMR-EX75EC / DMR-EX75EB / DMR-EXSSEG / DMR-EXBSEBI

A WARNING

This sen/Ice 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) DEVICES4

2.2. PRECAUTION OF LASER DIODE ---------------------------------- 5
2.3. SERVICE CAUTION BASED ON LEGAL RESTRICTIONS
..................................................................................... 6
3 SERVICE NAVIGATION ----------------------------------------------------------- 7
3.1. SERVICE INFORMATION ---------------------------------------------- 7
3.2. CAUTION FOR DivX -7
4 SPECIFICATION ------------- .3
5 NEw FEATURE ----------------------------------------------------------------------- 9
5.1. ABOUT DivX (EXCEPT EB) ------------------------------------------- 9
5.2. HDAVI CONTROL (HDMI LINK) ----------------------------------- 14
6 LOCATION OF CONTROLS AND COMPONENTS
7 OPERATING INSTRUCTIONS ---------------------------

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

BUTTON ..................................................................... 17

8 SERVICE MODE ........................................................... "13
8.1. SELF-DIAGNOSIS AND SPECIAL MODE SETTING 18

9 SERVICE FIXTURE AND TooLs .................................. ..23
10 ASSEMBLING AND DISASSEMBLlNG ................................... 29
10.1. DISASSEMBLY FLOW CHART .................................... 29

10.2. P.C.B. POSITIONS
10.3. TOP CASE-
10.4. FRONT PANEL-

10.5. SD CARD P.C.B. ......................................................... 30
10.6. RAM/DIGITAL P_C_B. MODULE .................................... 31
10.7. DV IN P.C.B. --------

10.8. HARD DISC DRIVE-
10.9. POWER P.C.B.
10.10. REAR PANEL -------------------------------------------------------------- 34
10.11. BACK END P.C.B. ------------------------------------------------------- 35
10.12. MAIN P.C.B. AND FRONT P.C.
10.13. TUNER P.C.B. AND TUNER

10.14. HDMI P.C.B. .....................
11 MEASUREMENTS AND ADJUSTMENTS ................................ 37
11.1. SERVICE POSITIONS ................................................. 37

11.2. CAUTION FOR REPLACING PARTS --------------------------- 41

14 PRINTED CIRCUIT BOARD-

Page

11.3. STANDARD INSPECTION SPECIFICATIONS AFTER
MAKING REPAIRS ------------------------------------------------------ 43
11.4. ABBREVIATIONS -------------------------------------------------------- 44
12 BLOCK DIAGRAM ----------------------------------------------------------------- 47
12.1. POWER BLOCK DIAGRAM ----------------------------------------- 47
12.2. ANALOG VIDEO BLOCK DIAGRAM -49
12.3. ANALOG AUDIO BLOCK DIAGRAM 50
12.4. TIMER BLOCK DIAGRAM -------------------------------------------- 51
12.5. HDMI BLOCK DIAGRAM ---------------------------------------------- 52
13 SCHEMATIC DIAGRAM --------------------------------------------------------- 53
13.1. INTERCONNECTION DIAGRAM -53
13.2. POWER ----------------------------------- -54
13.3. MAIN NET ------------------------------------------------------------------- 55
13.4. MAIN AV IO ----------------------------------------------------------------- 55
135. MAIN TIMER --------------------------------------------------------------- 57
13.6. MAIN NICAM ------------ .58
13.7. TUNER (REPD0032A) 59
13.8. TUNER (REPD0032B) ------------------------------------------------- 30
13.9. SD CARD / FRONT / Dv IN ----------------------------------------- 61
13.10. HDMI --------------------------------------------------------------------------- 62

-63
-63

14.1 . POWER P.C.B.

142. MAIN P.C.B.- -64
14.3. TUNER P.C.B. (REPD0032B) --------------------------------------- 66
14.4. TUNER P.C.B. (REPD0032A) / Dv IN P.C.B.

(VEP73135A) ---------------------------- -67
14.5. SD CARD P.C.B. / FRONT P.C.B. -68
14.6. HDMI P.C.B.- cs

15 APPENDIX FOR SCHEMATIC DIAGRAM ------------------------------- 71

15.1. VOLTAGE AND WAVEFORM CHART -------------------------- 71

1s EXPLODED VIEws ---------------------------------------------------
16.1. CASING PARTS AND & MECHANISM SECTION
16.2. PACKING & ACCESSORIES SECTION --------------

17 REPLACEMENT PARTS LIST ------------------------------------------------ 73
17.1. CASING PARTS & PRINTED CIRCUIT BOARDS --------- 78

17.2. PACKING & ACCESSORIES PARTS
17.3. ELECTRICAL PARTS
17.4. SERVICE FIXTURE AND TOOLS-