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DSD0503043C3 DMR-EH50GN 0 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...
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15_2 Main P.C.B. 15_3 Tuner P.C.B. 15_4 LED P.C.B. 15_5 P9001 Connector 15_6 Waveform Chart 16 Abbreviations 17 Block Diagram 17_1 Power Supply Block Diagram 17_2 Analog Video Block Diagram 17_3 Analog Audio Block Diagram 17_4 Timer Block Diagram 18 Schematic Diagram 18_1 Interconnection Schematic Diagram 18_2 Power Supply Schematic Diagram 18_3 Main Net Section (Main P.C.B.
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1 Safety precautions 1.1 General guidelines 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. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.
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2 Prevention of Electrostatic Discharge (ESD) to Electrostatic Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatic Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistor-sand semiconductor "chip"...
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4 Handling the Lead-free Solder 4.1 About lead free solder (PbF) Distinction of PbF P.C.B.: P.C.B.s (manufactured) using lead free solder will have a PbF stamp on the P.C.B. Caution: Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher.
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6 New Feature 6.1 Quick start function(REC) General A few seconds after tuning on the unit,you can start recording to DVD-RAM,HDD. You can switch the operation of this function (ON/OFF) on the menu screen. . Quick start(REC) principle In the power-off at Quick start, only power supplies for video IC,tuner and storage media are cut off. When the REC button is pushed a few second after the power button is pushed, Audio and Video data are stored in DDR SDRAM before a storage media(DVD-RAM or HDD) preparation.
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7 Taking out the Disc from RAM- Drive Unit when the Disc cannot be ejected by OPEN/CLOSE button 7.1 Forcible Disc Eject 7.1.1 When the power can be turned off. Turn off the power and press [STOP] [CH UP] keys on the front panel simultaneously for 5 seconds. 7.1.2 When the power can not be turned off.
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(5) Error occurring Disc type is displayed for 5 seconds. (6) Disc Maker s ID is displayed for 5 seconds. Example of Disc Maker s ID: DVD-R Disc No. FL Display (Disc Maker s ID) Disc Maker Country Panasonic Japan Pioneer Japan Mitsubishi Chemical Corporation Japan...
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VIVASTAR Switzerland 19 LGE LG Electronics Korea DVD-RAM Disc No. FL Display (Disc Maker s ID) Disc Maker Country Panasonic MATSUSHITA Panasonic Japan Maxell Japan PRODISC Prodisc Taiwan OPTDISC OPTDISC Taiwan Taiwan *Since an display is arbitrarily set up by the disk producer side, the above-mentioned display may be changed.
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9 Self-Diagnosis and Special Mode Setting 9.1 Self-Diagnosis Functions Self-Diagnosis Function provides information for errors to service personnel by “Self-Diagnosis Display” when any error has occurred. U**, H** and F** are stored in memory and held. You can check latest error code by transmitting [0] [1] of Remote Controller in Service Mode. Automatic Display on FL will be cancelled when the power is turned off or AC input is turned off during self-diagnosis display is ON.
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error.” Display for 5 seconds. Since the power cord fell out during a power failure or operation, it is under restoration operation. Restoration SELF CHECK *It will OK, if a display disappears No display operation automatically. If a display does not disappear, there is the possibility that defective Digital P.C.B.
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When the power button is not effective while power is ON, turn off the power Forced power- forcibly. Press [Power] key over than Display in P-off mode. *When Timer REC is ON, execute 10 seconds. “Forced Power-off” after releasing Timer REC.
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while the tray being locked. Display “LOCK” for 3 seconds. When the power is on (E-E Display at ATP executing. ATP re- mode), press [CH UP] and [CH Re-execute ATP. execution DOWN] simultaneously for 5 seconds. The display before When the power is on (E-E execution leaves.
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Switch Return XP mode. *48 kHz / 44.1 kHz are switched alternately. Initial mode is Interlace Switch Interlace and Progressive in EE mode. Press [1] [4] in I/P *Initial setting is “Interlace”. Switch mode. I/P Switch *This command is effective during Switch Interlace/Progressive *I/P are switched executing “White Picture Output”, “Magenta...
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mm: Minute ss: Second 3. Last Drive Error (1/2) is displayed for 5 seconds. 4. Last Drive Error (2/2) is Press [4] [2] in service displayed for 5 seconds. mode. RAM Drive error code display. When “INFO******” is *For details about the drive error code, refer being displayed, past 19 5.
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displayed. (Indicating unit: Second) Delete the Error Delete Error History information stored on Press [9] [7] in service History the unit. mode. When the WRITE check is Insert a SD card to SD card slot, and press [7] [4] in service mode. When the WRITE check is *Insert SD card while the SD card WRITE...
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10 Assembling and Disassembling 10.1 Disassembly Flow Chart The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing. To assemble the unit, reverse the steps shown in the chart below. 10.2 P.C.B.
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10.3 Top Case Remove the 2 screws (A) and 3 screws (B). Slide Top Case rearward and open the both ends at rear side of the Top Case a little and lift the Top Case in the direction of the arrows. 10.4 Front Panel Unlock 2 tabs (A) and 3 tabs (B) in this order to remove Front Panel.
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10.6 Digital P.C.B. Remove 2FFCs and 2 Screws (A). Lift up Digital P.C.B. slightly so to disconnect Connector to remove Digital P.C.B. CAUTION: When replacing Digital P.C.B., pay attention as below. 10.7 DVD-RAM Drive Remove 3 Screws (A) to remove DVD-RAM Drive. Lift up DVD-RAM Drive slightly and remove FFC and remove Cable between DVD-RAM Drive and Main P.C.B.
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10.8 HDD Remove ATAPI Connector and HDD Power Connector. Remove 4 Screws (A) to remove HDD Angle with HDD. Put HDD with HDD Angle up and down inversely so as not to give a shock to HDD.
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Remove 4 screws to remove HDD. Handling of HDD The following precautions should be taken when handling HDD. Never give an impact to HDD. (Even a drop from 1cm height can be a cause of HDD failure. When placing HDD on a workbench, provide a mat on a bench for shock absorption and anti-static purposes. When installing HDD, release it from your hands only after confirming that it is fully set on the chassis.
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At first disconnect the connector on one side as shown below, and pull out LED P.C.B. 10.10 Power P.C.B. Remove Screw (A). Remove 3 Screws (B) and disconnect Connector (A) and HDD Power Connector. Unlock Power P.C.B. from a Flange to remove Power P.C.B.
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10.11 Rear Panel Disconnect Fan Connector. Remove 7 Screws (A) and Screw (B). Unlock 2 Locking Tabs (A) to remove Rear Panel. 10.11.1 Fan Motor Disconnect Fan Connector and remove 2 Screws (C). Push and unlock 2 locking Tabs (A) to remove Fan Motor.
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10.12 Front (L) P.C.B. Remove a Screw (A) to remove Front (L) P.C.B. 10.13 Main P.C.B. Disconnect Connector (A) for Front (L) P.C.B. Remove 5 Screws (A),. Remove Power P.C.B. Angle, Digital P.C.B. Angle and SD Card P.C.B. Angle and disconnect Connector (A) to remove Main P.C.B.
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11 Service Fixture and Tools Part Number Description Compatibility RFKZ0125 Extension FFC (Digital P.C.B. - DVD-RAM Drive / 40 Pin) Same as E50/ E55 series RFKZ0126 Extension Cable (MainP.C.B. - DVD-RAM Drive/ 4 Pin) Same as E30/HS2 series RFKZ0216 Extension Cable (MainP.C.B. - Power P.C.B. / 23 Pin) Same as E55 series RFKZ0260 Extension Cable (MainP.C.B.
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12 Service Positions Note: For description of the disassembling procedure, see the section 10. 12.1 Checking and Repairing of Power P.C.B. 12.2 Checking and Repairing of Digital P.C.B.
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12.3 Checking and Repairing of Main P.C.B.
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12.4 Checking and Repairing of DVD-RAM Drive...
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13 Caution after replacing parts 13.1 After replacing the RAM Drive with new one 13.2 When the unit does not operate normally after replacing the Timer Microprocessor or Main P.C.B. When the unit does not operate normally after replacing the Timer Microprocessor or Main P.C.B. with new one, reset Timer Microprocessor.
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Procedure Item to Check 1 Turn on the power, and confirm items pointed out. Items pointed out should reappear. The Panasonic RAM disc should be 2 Insert RAM disc. recognized. No abnormality should be seen in the picture, 3 Enter the EE (TU IN / AV IN - AV OUT) mode.
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15 Voltage and Waveform Chart Note) Circuit voltage and waveform described herein shall be regarded as reference information when probing defect point, because it may differ from an actual measuring value due to difference of Measuring instrument and its measuring condition and product itself.
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16 Abbreviations INITIAL/LOGO ABBREVIATIONS A0~UP ADDRESS ACLK AUDIO CLOCK AD0~UP ADDRESS BUS ADATA AUDIO PES PACKET DATA ADDRESS LATCH ENABLE AMUTE AUDIO MUTE AREQ AUDIO PES PACKET REQUEST AUDIO RF SERVO AMP INVERTED INPUT SERVO AMP OUTPUT ASYNC AUDIO WORD DISTINCTION SYNC BIT CLOCK (PCM) BCKIN BIT CLOCK INPUT...
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ETSCLK EXTERNAL S CLOCK (54MHz) FBAL FOCUS BALANCE FCLK FRAME CLOCK FOCUS ERROR FOCUS ERROR AMP INVERTED INPUT FOCUS ERROR AMP OUTPUT FREQUENCY GENERATOR FREQUENCY SUB CARRIER FSCK FS (384 OVER SAMPLING) CLOCK G GND COMMON GROUNDING (EARTH) HA0~UP HOST ADDRESS HD0~UP HOST DATA HINT...
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SPEN SERIAL PORT R/W ENABLE SPRCLK SERIAL PORT READ CLOCK SPWCLK SERIAL PORT WRITE CLOCK SQCK SUB CODE Q CLOCK SQCX SUB CODE Q DATA READ CLOCK SRDATA SERIAL DATA SRMADR SRAM ADDRESS BUS SRMDT0~7 SRAM DATA BUS 0~7 START/STOP STAT STATUS STCLK...
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17 Block Diagram 17.1 Power Supply Block Diagram 17.2 Analog Video Block Diagram 17.3 Analog Audio Block Diagram 17.4 Timer Block Diagram...
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IC3001- ,IC4009- ,IC4012- NICAM DECODER P.C.B. FROM PWR SAVE TIMER IC7501- SECTION IC7301- 28 35 IC1510 IC7302 QR7401 :ON) (REG.+5V) (RESET) PK7701 PK7301 VOUT JC REG.+5V IC7301- 26 FROM JC P ON TIMER IC7501- SECTION DMR-EH50GN Power Supply Block Diagram...
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AV2 G TU7801 GREEN U/V TUNER (DECODER/EXT) AV2 B Q7802 TUNER BLUE AV2 G PP7401 PS7801 VIDEO CLAMP CLAMP BUFFER AV2 V/Y VIDEO/Y 2.3V AV2 B CLAMP 1.0V TUNER P.C.B. AV2 V/Y CLAMP DMR-EH50GN Analog Video Block Diagram AV2 R/G/B...
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PP7401 PK7701 PK7301 PK7302 PK7702 TUN Lch IIC DATA SECTION SIF OUT L OUT IC7501- 29 NICAM DECODER P.C.B. 2.3V 1.0V TUNER P.C.B. JK3903 OPTICAL (DIGITAL AUDIO OUT) FROM P9001 P7402 IEC OUT DIGITAL P.C.B. DMR-EH50GN Analog Audio Block Diagram...
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X SW+12.4V (AMBER) (FAN MOTOR DRIVE) FAN PWM OUT Q7511 (FAN MOTOR DRIVE) P7101 P7507 88 SD SEL LED SD SEL Q7101 D7101 (SD SEL LED DRIVE) (GREEN) FAN MOTOR LED P.C.B. P7504 P7504 FAN LOCK H DMR-EH50GN Timer Block Diagram...
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19 Print Circuit Board 19.1 Power P.C.B. 19.2 Main P.C.B. 19.2.1 Main P.C.B. (1/4 Section) 19.2.2 Main P.C.B. (2/4 Section) 19.2.3 Main P.C.B. (3/4 Section) 19.2.4 Main P.C.B. (4/4 Section) 19.2.5 Main P.C.B. Address Information 19.3 Tuner P.C.B., LED P.C.B., Front (L) P.C.B. 19.4 Nicam Decoder P.C.B.
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18.3. Main Net Section (Main P.C.B. (1/3)) Schematic Diagram (M) TO P1102 POWER P.C.B. TO P9001 P1501 DIGITAL P.C.B. (Audio Net Section) P7402 X SW 5.8V X SW 5.8V X SW 12.4V X SW 12.4V XINTP XINTP SCLK G SCLK A UARTM2P G UARTM2P A XINTM...
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AV2 PB R1507 1500 C1501 WIDE 0.022 QR7404 R1508 UNR521500L DMR-EH50GN C1506 10V47 NOTE:DO NOT USE ANY PART NUMBER SHOWN ON THIS SCHEMATIC DIAGRAM FOR Main Net Section(Main P.C.B.(1/3)) ORDERING.WHEN YOU ORDER A PART,PLEASE REFER TO PARTS LIST. Schematic Diagram(M)
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18.4. A/V I/O Section (Main P.C.B. (2/3)) Schematic Diagram (AI) S VIDEO VIDEO AUDIO IN L G AADC L A G AADC R A G CIN DM A G V YIN DM A G SLICER A G IIC CLK A G IIC DATA A V SYNC DET GND GND...
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AV4 V IN C3029 0.1 ENC G/Y IN AV1 FB OUT VGND AV1 V IN C3030 50V4.7 ENC B/B-Y IN AV2 FB IN C3031 0.01 REG2.5 AV2 V/Y IN C3014 C3034 C3035 0.01 6V100 DMR-EH50GN A/V I/O Section (Main P.C.B.(2/3)) Schematic Diagram(AI)
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LB3002 J0JGC0000020 C3033 C3032 0.01 6V100 DMR-EH50GN A/V I/O Section NOTE:DO NOT USE THE PART NUMBER SHOWN ON THIS DRAWING FOR ORDERING. (Main P.C.B.(2/3)) THE CORRECT PART NUMBER IS SHOWN IN THE PARTS LIST, AND MAY BE SLIGHTLY DIFFERNT OR AMENDED SINCE THIS DRAWING WAS PREPARED.
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18.5. Timer Section (Main P.C.B. (3/3)) Schematic Diagram (T) D7509 B0JDCE000002 X SW 5.2V C7585 6V100 TW7501 TO P7101 LED P.C.B. P7507 IC7505 IC7506 R7629 6800 C0EBJ0000336 C0EBE0000457 HDD SEL LED R7630 6800 DVD SEL LED (RESET) (RESET) R7631 6800 SD SEL LED OUT VDD GND X SW 5.2V...
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FAN PWM OUT2 IIC CLK AV2 PB L IIC DATA WIDE H R7652 100 K7504 0 R7628 X SW+12.4V R7576 C7534 0.01 R7563 R7574 22K C7533 6V47 C7547 1 LB7509 J0JCC0000060 X SW+12.4V R7577 10K DMR-EH50GN Timer Section(Main P.C.B.(3/3)) Schematic Diagram(T)
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C7571 R7616 50V22 C7569 R7614 2200P QR7508 Q7510 UNR521400L 2SD1994BR1VT (POWER SAVE :ON) (SW. :OFF) D7504 MAZ4300NLF DMR-EH50GN IMPORTANT SAFETY NOTICE: COMPONENTS IDENTIFIED WITH THE MARK HAVE TH Timer Section(Main P.C.B.(3/3)) Schematic Diagram(T) FOR SAFETY.WHEN REPLACING ANY OF THESE COMPO...
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R7502 C7502 3900 TL7502 100P UNREG 38V DMR-EH50GN NOTE:DO NOT USE ANY PART NUMBER SHOWN ON THIS SCHEMATIC DIAGRAM FOR Timer Section(Main P.C.B.(3/3)) HE MARK HAVE THE SPECIAL CHARACTERISTICS ORDERING.WHEN YOU ORDER A PART,PLEASE REFER TO PARTS LIST. Schematic Diagram(T)
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18.6. Tuner Pack Schematic Diagram K7808 C7828 0.01 LB7803 J0JHC0 LB7802 J0JHC000032 C7817 6V47 K7810 C7809 0.01 TO PP7401 MAIN P.C.B. (MAIN NET SECTION) PS7801 BOOSTER 5V JC REG 5V IIC CLK IIC DATA SIF OUT UNREG 38V TUNER VIDEO IN NOTE:DO NO THE C SLIGH...
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1000 2SB1218A0L (VIDEO BUFFER) R7844 DMR-EH50GN NOTE:DO NOT USE THE PART NUMBER SHOWN ON THIS DRAWING FOR ORDERING. Tuner Pack THE CORRECT PART NUMBER IS SHOWN IN THE PARTS LIST, AND MAY BE SLIGHTLY DIFFERNT OR AMENDED SINCE THIS DRAWING WAS PREPARED.
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18.7. Nicam Decoder Schematic Diagram C7335 C7305 6V100 IC7302 C0EAH0000051 TO PK7701 (RESET) MAIN P.C.B. (MAIN NET SEC.) PK7301 LB7303 J0JCC0000080 L7303 1u JC REG.5V C7303 C7306 C7334 R7304 6V100 0.01 50V2.2 C7311 100P C7301 R7301 C7302 0 TO PK7702 MAIN P.C.B.
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TL7303 TL7301 R7314 C7313 C7312 16V10 16V10 LB7302 J0JCC0000124 C7318 16V10 R7315 C7314 DMR-EH50GN NOTE: Nicam Decoder DO NOT USE ANY PART NUMBER SHOWN ON THIS SCHEMATIC DIAGRAM Schematic Diagram FOR ORDERING.WHEN YOU ORDER A PART,PLEASE REFER TO PARTS LIST.
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R6807 DAT0 DAT1 DAT2 C6801 0.01 RX6802 RX6801 12KX4 22X4 R6802 22 R6803 22 NOTE:DO NOT USE ANY PART NUMBER SHOWN ON THIS SCHEMATIC DIAGRAM FOR ORDERING.WHEN YOU ORDER A PART,PLEASE REFER TO PARTS LIST. DMR-EH50GN SD Card Schematic Diagram...
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18.9. LED Schematic Diagram TO P7507 MAIN P.C.B. (TIMER SECTION) P7101 X SW 5.2V SD SEL LED DVD SEL LED HDD SEL LED R7103 SD SEL D7101 B3ABA0000595 Q7101 2SD0601A0L (SD SEL LED DRIVE) R7108...
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0.01 Q7102 Q7103 2SD0601A0L 2SD0601A0L (DVD SEL LED DRIVE) (HDD SEL LED DRIVE) R7110 R7112 NOTE:DO NOT USE ANY PART NUMBER SHOWN ON THIS SCHEMATIC DIAGRAM FOR ORDERING.WHEN YOU ORDER A PART,PLEASE REFER TO PARTS LIST. DMR-EH50GN LED Schematic Diagram...
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21 Replacement Parts List Notes: *Important safety notice: Components identified by mark have special characteristics important for safety. Furthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc. are used. When replacing any of components, be sure to use only manufactures specified parts shown in the parts list. *Warning: This product uses a laser diode.
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30-5 RMR1698-S SHAFT HOLDER 30-6 RKF0728A-K TRAY DOOR 30-7 VMB3410 TRAY SPRING 30-8 RGK1886A-Q FL ORNAMENT 30-9 RMX0302 DOOR DAMPER RHD30113 SCREW RKM0532A-S TOP CASE RFKNVXY1872 RAM DRIVE UNIT 1 (RTL) RMV0302 BARRIER RMV0301 BARRIER XYN3+F8FJ SCREW RMX0323 PCB SPACER VMD4943 PCB ADAPTOR EUR7729KF0...