When servicing this product, under no circumstances should the original design be modified or altered without permission from NAD. All components should be replaced only with types identical to those in the original circuit and their physical location, wiring and lead dress must conform to original layout upon completion of repairs.
SERVICING PRECAUTIONS CAUTION: Before servicing the DVD covered by this service Electrostatically Sensitive (ES) Devices data and its supplements and addends, read and follow the Some semiconductor (solid state) devices can be damaged SAFETY PRECAUTIONS. NOTE: if unforeseen circumstances easily by static electricity. Such components commonly are create conflict between the following servicing precautions called Electrostatically Sensitive (ES) Devices.
THE PROCESS OF DISC DOWNLOAD Please follow the below process to download a program with disc 1. Turn on the DVD-player. (Note. Be sure that there is no disc in DVD-player) 2. Press “SETUP” button on Remote control. 3. Choose a “display” menu by using the cursor button and then choose a “TV Aspect” menu. And choose “16:9” menu.
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7. Copy the changed file to a disc. 8. Insert the copied disc to DVD-player. 9. If the below picture appears on the screen, Press “ ” key. 10.After the below picture appears on the screen, Disc will emerge from DVD-player automatically. Take the disc out of the DVD-player.
SPECIFICATIONS • GENERAL Power requirements: AC 100 V ~ 240 V, 50 Hz / 60 Hz Power consumption: Dimensions (Approx.): 430 x 39 x 192 mm (17 x 1.5 x 7.6 inches) (W x H x D) without foot Net weight (Approx.): 1.5 kg (3.3 lbs) Operating temperature: 5 °C to 35 °C (41 °F to 95 °F)
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SECTION 3 ELECTRICAL CONTENTS ELECTRICAL TROUBLESHOOTING GUIDE ..................3-2 1. SMPS TROUBLESHOOTING FLOW ......................3-2 2. POWER CHECK FLOW ..........................3-4 3. SYSTEM OPERATION FLOW.........................3-5 4. SYSTEM TEST FLOW ...........................3-6 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGIBG ........3-12 1. SYSTEM 27MHZ CLOCK, RESET, FLASH R/W SIGNAL ..............3-12 2.
ELECTRICAL TROUBLESHOOTING GUIDE 1. SMPS TROUBLESHOOTING FLOW No 3.3VA Replace the FR101 Is the FR101 normal? (Use the same ICW) Replace the Is the D105/D106/D107/ D105/D106/D107/D108 D108 normal? Is the Vcc (about 17V) Check or Replace the IC101 supplied to IC101 Pin2? Replace the D121 Is the D121 normal? Is there about 2.5V at the...
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ELECTRICAL TROUBLESHOOTING GUIDE No REG 5.0V Is the Vcc(=5.6V) • • Check or Replace the D123 supplied to Q126 Collector? Is the Vcc(=12V) • Check the ‘PWR CTL “H”’ • supplied to Q126 signal from μ-com Base? Check or Replace the Q126 No 12V Is the Vcc(=14V) •...
ELECTRICAL TROUBLESHOOTING GUIDE 2. POWER CHECK FLOW No 5V No 3.3VA. Is 3.3VA Is 3.3VA section working? section working? Is 3.3V Is 5.6V present at present at emitter No 3.3VA collector of Q126? of Q121? Replace Q126. Check FR101 Replace Q121. Is there a DC voltage at Check D105/D106/D107/ cathode of D105 or D107?
ELECTRICAL TROUBLESHOOTING GUIDE 3. SYSTEM OPERATION FLOW Power on 1. 8032 initializes SERVO,DSP & RISC registers 2. Write RISC code to SDRAM 3. Reset RISC Show LOGO Tray closed? Tray close to closed position SLED at inner side? SLED moves to inner position 1.
ELECTRICAL TROUBLESHOOTING GUIDE 4. SYSTEM TEST FLOW TEST Check the AC Replace power PCBA or AC transformer. Voltage Power PCBA (110V or 220V) Switch on the power PCBA Is the DC voltage outputs OK? Repair or Replace power PCBA (5V, 3.3V, 12V, 5.6V MOTOR) Make sure the main PCBA don't short on VCCs and switch it on.
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ELECTRICAL TROUBLESHOOTING GUIDE RESET or power on. Check connection lines Flash between FLASH & MT1389S memory operates Show LOGO? and the FLASH access time properly? whether is suitable or not. Check connection lines SDRAM between SDRAM & MT1389S works properly? and the SDRAM is damaged.
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ELECTRICAL TROUBLESHOOTING GUIDE Does Motor Check the connection the SLED move driver STBY pin to inner side when it is line of STBY signal. is high? at outter position? Is FMSO Check the related DC level higher circuit of FMSO. than 1.4V? Check the amp circuit and SL- output...
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ELECTRICAL TROUBLESHOOTING GUIDE Check the laser power circuit Laser turns LD01 or LD02 on MT1389S and connecting on when reading output properly? to power transistor. disc? Collector Check the related circuit on voltage of power transistor laser power transistor. is OK? Check cable connection between transistor ouput and pick-up head.
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ELECTRICAL TROUBLESHOOTING GUIDE Proper Check connections between Focus on OK? signals on A, B, C, D of MT1389S and pick-up head. MT1389S Check the FOSO connection Check FEO signal on MT1389S and motor driver. on MT1389S Check FOSO signal on MT1389S Normal Check the related Track on OK?
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ELECTRICAL TROUBLESHOOTING GUIDE Normal Check the related Normal Audio output when audio DAC circuit of audio DAC. disc playback? out? Check audio filter, amplify, mute circuit. Commu- Normal nications between Check communication IR.VFD & Front pannel IR.VFD Front pannel lines on MT1389S. key functions? key &...
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGIBG 1. SYSTEM 27MHz CLOCK, RESET, FLASH R/W SIGNAL 1) MT1389S main clock is at 27MHz (X601) FIG 1-1 2) MT1389S reset is low active 3.3V IC601 PWR_CTL RESET TIME FIG 1-2 3-12...
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3) RS232 waveforn during procedure (Downloading) FIG 1-3 4) Flash R/W enable signal during download (Downloading) IC602 FIG 1-4 3-13...
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION) FMSO(1.9V/1.4V/1.1V) STBY(3.3V) SL+(4.2V/2.8V/1.2V) SL-(4.2V/2.8V/1.5V) FIG 4-1 5. LENS CONTROL RELATED SIGNAL (NO DISC CONDITION) FOSO(1.5V/1.4V/1.3V) F+(3.2V/2.7V/2.2V) F-(3.2V/2.7V/2.2V) FIG 5-1 3-15...
6. LASER POWER CONTROL RELATED SIGNAL (NO DISC CONDITION) IC601 MDI1 (0V/180mV) LD02 (3.3V/2.3V) LD01 (3.3V/2.3V) FIG 6-1 7. DISC TYPE JUDGEMENT WAVEFORM CN201 IC601 FIG 7-1 (DVD) 3-16...
MODIFIED OR ALTERED WITHOUT PERMISSION CUIT USED. THIS WAY, IMPLEMENTATION OF THE 2. Voltages are DC-measured with a digital voltmeter dur- FROM THE NAD. ALL COMPONENTS SHOULD BE LATEST SAFETY AND PERFORMANCE IMPROVE- ing Play mode. 1. POWER (SMPS) CIRCUIT DIAGRAM...
• CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE MODE MODE STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO.
DECK MECHANISM DISASSEMBLY MAIN BASE TRAY DISC DISC CLAMP ASSEMBLY PLATE CLAMP MAGNET CLAMP CLAMP UPPER (Fig. A) BASE MAIN HOLDER LEVER BASE MAIN BASE MAIN BOTTOM SIDE VIEW FIG. 4-1 FIG. 4-2 1. MAIN BASE (FIG. 4-1) 2. TRAY DISC (FIG. 4-2) 1-1.
RUBBER DAMPER Distinguish upper and lower sides (Assemble with care) (S2) RUBBER DAMPER (S2) RUBBER DAMPER (S2) Distinguish upper and lower sides (Assemble with care) BASE PU (S2) GENERAL PICK UP ASSEMBLY GEAR RACK SPINDLE MOTOR ASSEMBLY FIG. 4-3 3. BASE ASSEMBLY SLED (FIG. 4-3) 3-3.
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S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS IC101 EAN34789801 IC,PWM Controller STR-A6259H 12.9V TO 15.7V 10V IC102 6500RDB011B Sensor,Position K1010B 5V DIP BK 4P 4PIN PHOTO IC102 657-063A Sensor,Position LTV-817B 5V DIP BK 2P PHOTO CO ALTERNATE IC103 0IPMGUC004B IC,LDO Voltage Regulator TL431 MAX12V 3.3V 600MW TO92 T...
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DVD DV302H-NE BSWENNK NAD play T517C AGL37044006 Panel Assembly,Front DVD DV302H-NE BSWENNT NAD play T517CT EBR50464802 PCB Assembly 08 DVD-P NAD TIMER IN _ C901 0CN1040K948 Capacitor,Ceramic,Axial CH UP050 F104Z-A-B Z 100nF -20 C902 0CN1010K518 Capacitor,Ceramic,Axial CH UP025 B101K-A-B Z 100pF 10%...