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Panasonic LH-55RM1MX, Service Manual, Page: 29 / 53

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Panasonic LH-55RM1MX Service Manual Download Page 29

SECTION 2 DISASSEMBLY PROCEDURES

2.7 All parts views

Specification:

①

Panel&FFC cable

②

Power supply board

③

Main board

④

Side & Bottom AV BKT

⑤

Back cover

⑥

Speaker box(with rubbers)

⑦

Speaker lines

⑧

DC line

⑨

IR line

⑩

IR board

⑪

Key module

DIS-6

1

5

3

10

6

7

2

7

8

Pay attention:here the speaker box with 4 rubbers

4

6

9

11

Summary of Contents for LH-55RM1MX

Page 1: ...vice or repair the product or products dealt with in this service information by anyone else could result in serious injury or death IMPORTANT SAFETY NOTICE There are special components used in this equipment which are important for safety These parts are marked by 7 in the schematic diagram circuit board diagrams exploded views and replacement parts list It is essential that these critical parts ...

Page 2: ...e 4 Troubleshooting Guide SECTION 2 DISASSEMBLY PROCEDURES 1 Preparations 2 Parts Disassembly 3 Replacement of LCD Panel Module SECTION 3 ADJUSTMENTS 1 Software Update Procedures 2 Software Update BY USB 3 How to catch log file 4 Hotel Mode Setting 5 User Manual of RS232 SECTION 4 DIAGRAMS 1 Block Diagrams SECTION 5 PARTS LIST 1 Exploded views 2 IGP List 2 ...

Page 3: ...insulation papers shields are properly installed 6 After servicing make the following leakage current checks to prevent the customer from being exposed to shock hazards 1 2 Touch Current check 1 Plug the AC cord directly into the AC outlet Do not use an isolation transformer for this check 2 Connect a measuring network for touch currents between each exposed metallic part on the set and a good ear...

Page 4: ... Reserve the AC plug in the AC outlet and repeat each of the above measure 6 The potential at any point TOUCH CURRENT expressed as voltage U1 and U2 does not exceed the following values For a c U1 35 V peak and U2 0 35 V peak For d c U1 1 0 V Note The limit value of U2 0 35 V peak for a c and U1 1 0 V for d c correspond to the values 0 7 mA peak a c and 2 0 mA d c The limit value U1 35 V peak for ...

Page 5: ...osure of the assembly 3 Use only a grounded tip soldering iron to solder or unsolder ES devices 4 Use only an anti static solder removal device Some solder removal devices not classified as anti static ESD protected can generate electrical charge sufficient to damage ES devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ES devices 6 Do not rem...

Page 6: ...ree solder has a higher melting point than standard solder Typically the melting point is 50 70 F 30 40 C higher Please use a high temperature soldering iron and set it to 700 20 F 370 10 C Pb free solder will tend to splash when heated too high about 1100 F or 600 C If you must use Pb solder please completely remove all of the Pb free solder on the pins or solder area before applying Pb sol der I...

Page 7: ...PREFACE 3 Specifications 7 ...

Page 8: ...PREFACE 8 ...

Page 9: ...CE INFORMATION 1 Name of each part INF 2 1 1 Display body 1 2 Connecting terminals 1 3 Remote controls 2 Notes on Service INF 5 2 1 Before service operation 2 2 Service 3 Service Mode INF 6 3 1 Watching display 3 2 Using Media Player 4 Troubleshooting Guide INF 12 4 1 Troubleshooting flow INF 1 ...

Page 10: ...SECTION 1 SERVICE INFORMATION 1 Name of each part 1 1 Display body INF 2 ...

Page 11: ...SECTION 1 SERVICE INFORMATION 1 2 Connecting terminals INF 3 ...

Page 12: ...SECTION 1 SERVICE INFORMATION 1 3 Remote controls INF 4 ...

Page 13: ...eplaced by discrete components Other electrical parts and mechanism parts 2 2 2 Repair 1 Before repairing make sure to turn off the main power and disconnect the power plug from the power outlet When replacing the PCB module the internal electrical parts can be broken by the static electricity of clothes or human body Please take care in static electricity use an antistatic wrist strap or wear the...

Page 14: ...SECTION 1 SERVICE INFORMATION 3 Service Mode 3 1 Watching display INF 6 ...

Page 15: ...SECTION 1 SERVICE INFORMATION INF 7 ...

Page 16: ...SECTION 1 SERVICE INFORMATION INF 8 ...

Page 17: ...SECTION 1 SERVICE INFORMATION INF 9 ...

Page 18: ...SECTION 1 SERVICE INFORMATION 3 2 Using Media Player INF 10 ...

Page 19: ...SECTION 1 SERVICE INFORMATION INF 11 ...

Page 20: ...ON 4 Troubleshooting Guide The failure symptom Power off or No picture or No sound is reported but it can not be confirmed in the service use this function to confirm the failure status and narrow down the failure circuit INF 12 ...

Page 21: ...e AC input and the power is ON Yes Power board CN924 Pin 2 3 output 5 2V Yes Use RC or Key to turn on the PD No Replace the Main board No No Yes Power On Replace the Power board 1 RC can turn on the PD and Key can t replace the key board 2 Key can turn on the PD and RC can t replace the RC INF 12 ...

Page 22: ...SECTION 1 SERVICE INFORMATION 4 1 2 Abnormal display Note About the Replacement procedure of LED BAR Please refer to the Supplement Service Manual INF 13 ...

Page 23: ...SECTION 1 SERVICE INFORMATION 4 1 3 No display Note About the Replacement procedure of LED BAR Please refer to the Supplement Service Manual INF 14 ...

Page 24: ...tions DIS 2 2 Parts Disassembly DIS 3 2 1 Remove back cover 2 2 Tear tapes 2 3 Disconnect cables remove the IR Key module 2 4 Disassemble the Key module 2 5 Separating the speaker lines speaker boxes 2 6 Remove all screws of PCB 2 7 All parts views 3 Replacement of LCD Panel Module DIS 7 3 1 How to handle LCD panel module DIS 1 ...

Page 25: ...e sure the wiring will remain the same as you Open the Monitor set wrong wiring may cause safety issue All electric parts need to handle with ESD measures ESD glove wrist strip ESD workstation is requested during repair process And Monitor should place on an ESD cloth pad in case of scratch and crack during repair work Use Rosh solder paste if you want to repair components DIS 2 ...

Page 26: ...move back cover Note like the picture remove 15 pcs screws from the red circle position and remove the back cover 2 2 Tear tapes 2 3 Disconnect cables remove the IR Key module Note the IR Key module on the position mark by red frame there s no any screws DIS 3 ...

Page 27: ...ES 2 4 Disassemble the Key module Note After separate the Key module then will find 3 parts show in the picture 2 5 Separating the speaker lines speaker boxes Note there have 4 speaker rubbers can take down mark by red circles DIS 4 ...

Page 28: ...SECTION 2 DISASSEMBLY PROCEDURES 2 6 Remove all screws of PCB Note Disassemble the main board and power board Total other Parts 8 pcs screws bottom AV BKT and side AV BKT DIS 5 ...

Page 29: ...ws Specification Panel FFC cable Power supply board Main board Side Bottom AV BKT Back cover Speaker box with rubbers Speaker lines DC line IR line IR board Key module DIS 6 1 5 3 10 6 7 2 7 8 Pay attention here the speaker box with 4 rubbers 4 6 9 11 ...

Page 30: ... Module Attention when removing LCD panel module Please work by two or more persons Please work putting a glove Caution about LCD panel module When replacing the LCD panel module please work to be aware of the following 3 1 How to handle LCD panel module DIS 7 ...

Page 31: ...SECTION 2 DISASSEMBLY PROCEDURES DIS 8 ...

Page 32: ...SECTION 2 DISASSEMBLY PROCEDURES DIS 9 ...

Page 33: ...1 1 Upgrade by programming tool 1 2 Upgrade by serial port tool 2 Software Update BY USB ADJ 6 2 1 USB sortwar update 3 how to catch log file ADJ 7 3 1 Steps 4 Hotel Mode Setting ADJ 9 4 1 Entering Hotel Mode Menu 5 User Manual of RS232 ADJ 10 5 1 RS232 Menu should be shown by the following operation 5 2 RS232 CODE ADJ 1 ...

Page 34: ...2 upgrading by programming tool is the most effecient way of upgrading which is suitable for dealing with vast number of software failure But this method requires detaching flash IC from main board which involves a certain risk precautious is needed 1 1 2 Detach flash IC from the mainboard then fix it on the programming tool on the right direction Note Flash IC needs to be fixed on the right direc...

Page 35: ... right category then click start detect 1 1 4 Select device type and load upgrade software Double click the device type which matches the flash IC type on the programming tool then click load to select software you re about to load 1 1 5 Load the correct upgrade software Select the correct upgrade software then click open to load the software ADJ 3 ...

Page 36: ...ful signifies upgrade succeeded 1 2 Upgrade by serial port tool 1 2 1 Open the ISP TOOL Upgrade by serial port is an ineffecient method of upgrading But it does not require disassemble TV set to detach flash IC Thus the method is suitable to occasional software failure 1 2 2 Install driver program Launch the program Click Extract to finish installation ADJ 4 ...

Page 37: ...ols Connect AC power to mainboard click Connect if flash IC s type is showed on the screen connection has succeeded 1 2 4 Read the upgrade software Click Read then click the Read icon below to load the upgrade software 1 2 5 Upgrading Click Auto and Run to start upgrading ADJ 5 ...

Page 38: ...it till the upgrade procedure complete Note Do not launch software such as secureCRT etc to print TV information while upgrade with serial port tools otherwise verify may fail 2 2 Software Update BY USB 2 1 USB sortwar update ADJ 6 ...

Page 39: ...t port of your COM you can check the device management of your computer to find port option refer to bellow picture 3 1 2 Setup serial COM run SecureCRTPortable exe If your COM is not COM8 please click Connect button If your COM is not COM8 please click New session button as below 3 1 3 Select Protocol Serial as below and do next step ADJ 7 ...

Page 40: ...t the correct Port above in your computer Click Connect then you can see log info are printing 3 1 5 Save log info Open File Menu and select log Session option to save log file Remember to save log info before the problem appear ADJ 8 ...

Page 41: ...rol 4 1 2 Step 2 To enable Hotel Mode use the or arrow keys while Hotel Mode item is selected On Once Hotel Mode is on the Hotel Mode settings will be enabled for adjusting 4 1 3 Step 3 Use the and arrow keys to access the hotel mode settings Use the and arrow keys to change the settings See SETTING HOTEL MODE MENU SETTINGS for explanation of hotel mode settings MENU for return to previous menu Pr...

Page 42: ...MENTS Explanation of Hotel Mode 5 User Manual of RS232 5 1 RS232 Menu should be shown by the following operation 5 1 1 Step 1 Press Menu 7 9 0 6 to enter into Hotel Mode Hotel Mode and RS232 should be set to On ADJ 10 ...

Page 43: ... 24210355766 Select the COM Port of debug tool and Setup the software Press Run to Start Communication 5 1 3 Step 3 The RS232 Line is shown as the picture Insert the 3 5MM Audio Plug to the Earphone JACK RS232 port of Main board Connect the DB 9 interface to your Control center ADJ 11 ...

Page 44: ...S232 Control Command in the excel Send Command is 0x02 Control Code 0x03 0x02 0x03 is HEX Control Code is ASCII For example New a send sequence of Volume up Double click here Set the Name AUU and input the Command 02 HEX AUU ASCII 03 HEX ADJ 12 ...

Page 45: ...SECTION 3 ADJUSTMENTS Press OK and save the send sequence then Click Send to send the Volume up Command to TV and receive the serial message from TV ADJ 13 ...

Page 46: ...SECTION 3 ADJUSTMENTS 5 2 RS232 CODE ADJ 14 ...

Page 47: ...SECTION 4 DIAGRAMS Diagrams Model No LH 55RM1MX CONTENTS SECTION 4 DIAGRAMS 1 Block Diagrams DIA 2 1 1 A module 1 2 P module DIA 1 ...

Page 48: ...SECTION 4 DIAGRAMS 1 Block Diagrams 1 1 A module DIA 2 ...

Page 49: ...SECTION 4 DIAGRAMS 1 2 P module DIA 3 ...

Page 50: ...SECTION 5 PARTS LIST Exploded Views Parts List Model No LH 55RM1MX CONTENTS SECTION 5 PARTS LIST 1 Exploded views SPL 2 1 1 Mechanical and electrical parts 2 IGP List SPL 3 SPL 1 ...

Page 51: ...SECTION 5 PARTS LIST 1 Exploded views 1 1 Mechanical and electrical parts SPL 2 ...

Page 52: ...SECTION 5 PARTS LIST 2 IGP List SPL 3 ...

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