SPECIFICATION XV-N450BUC, XV-N452SUC, XV-N452SUM General Power requirements AC120 V, 60 Hz Power consumption 430 × 35 × 201 mm (17 × 1.4 × 7.9 inches) (W × H × D) without foot Dimensions (Approx.) Net weight (Approx.) 1.6 kg (3.5 lbs) 5 °C to 35 °C (41 °F to 95 °F) Operating temperature Operating humidity...
SECTION 1 PRECAUTION Safety Precautions (1) This design of this product contains special hardware and path to the chassis, and measure the AC voltage across many circuits and components specially for safety purpos- the resistor. Now, reverse the plug in the AC outlet and es.
Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.5.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
Important for laser products 5.CAUTION : If safety switches malfunction, the laser is able 1.CLASS 1 LASER PRODUCT to function. 2.CAUTION : VISIBLE AND/OR INVISIBLE CLASS 1M 6.CAUTION : Use of controls, adjustments or performance of LASER RADIATION WHEN OPEN. procedures other than those specified here in may result in DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH hazardous radiation exposure.
SECTION 2 SPECIFIC SERVICE INSTRUCTIONS SERVICE INFORMATION FOR EEPROM POWER ON DETECT NEW EEPROM DVD LOGO Status (NO Disk status) (OPTION EDIT SCREEN) MODEL : XV-N450B/XV-N452S NAME OPT 1 Remotecontrol OPT 2 Pause key-->1-->4-->7-->2 in order. OPT 3 OPT 4 OPT 5 OPT 6 Press number 0~8, Press charater...
SECTION 3 DISASSEMBLY Main body section 3.1.1 Removing the top cover (See figure 1) 3.1.3 Removing the mechanism assembly (See figure 4) (1) Remove the two screws A attaching the top cover on both • Prior to performing the following procedure, remove the top sides of the main body.
DVD MECHANISM PARTS LOCATION • TOP VIEW (WITH TRAY) Procedure Disass Fig- Parts Fixing Type embly Starting No. 1 Main Base Clamp Assem- bly Disc 1, 2 3 Plate Clamp 1, 2, 3 4 Magnet Clamp 1, 2, 3, 4 5 Clamp Upper 6 Tray Disc Base Assembly...
DVD MECHANISM DISASSEMBLY Fig.4-1 Fig.4-2 3.3.1 MAIN BASE (FIG. 4-1) 3.3.2 TRAY DISC (FIG. 4-2) (1) Insert and push a Driver in the emergency eject hole(A) at 126.96.36.199 Clamp Assembly Disc the right side, or put the Driver on the Lever(B) of the Gear (1) Place the Clamp Assembly Disc as Fig.
Fig.4-4 3.3.5 FRAME ASSEMBLY UP/DOWN (FIG. 4-4) 3.3.8 GEAR LOADING (FIG. 4-4) Note 3.3.9 GUIDE UP/DOWN (FIG. 4-4) Put the Base Main face down (Bottom Side) (1) Move the Guide Up/Down in direction of arrow(A) as (1) Release the screw (S4) Fig.(A) (2) Unlock the Locking Tab (L3) in direction of arrow and then (2) Push the Locking Tab(L5) down and then lift up the Guide...
SECTION 4 ADJUSTMENT The version of the firmware is confirmed (1) The power supply is turned ON. (2) Press the "SETUP" button of the remote control unit to select "16:9" in "Display Mode". TV Aspect Display Mode 16:9 TV Output Select Prev.
SECTION 5 TROUBLESHOOTING ELECTRICAL TROUBLESHOOTING GUIDE 5.1.1 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.
5.1.2 SYSTEM OPERATION FLOW Power on 1. 8032 CPU 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.
5.1.3 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 VCC and switch it on.
RESET or power on. Check connection lines Flash between FLASH & ZR966 memory operates Show LOGO? and the FLASH access time properly? whether is suitable or not. Check connection lines SDRAM between SDRAM & ZR966 works properly? and the SDRAM is damaged. ZR966 Check the related circuit of VIDEO outputs...
Does the Motor Check the connection line of SLED move driver DRVSB pin to inner side when it is at DRVSB signal. is high? outer position? Check the related circuit of Is SLED_S DC Level higher than Sled_S. 1.4V? Check the amp circuit on and SL- output motor driver.
Check the laser power circuit Laser DVD_LD or on ZR966 and connecting turns on when reading CD_LD output to power transistor. properly? disc? Collector Check the related circuit on voltage of power transistor laser power transistor is OK? Check cable connection between transistor output and pick-up head.
Check connections between Proper signals on Focus on OK? ZR966 and pick-up head. A,B,C,D of ZR966 Check the focus_s connection Check focus_s on ZR966 and motor driver. signal on ZR966 Check the focus control F+ & F- output amp circuit on motor driver. properly? Check cable connection on pick-up head.
Normal Audio DAC Check connection between audio output when disc received correct data ZR966 & audio DAC. playback? stream? Check the related Normal audio DAC out? circuit of Audio DAC. Check audio filter, amplify, mute circuit. Commu- Normal nications between Check communication lines IR.VFD &...
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 5.2.1 SYSTEM 27MHz CLOCK, RESET, FLASH R/W SIGNAL 1) ZR966 main clock is at 27MHz (X601) Fig.1-1 2) ZR966 reset is active high. 3.3VA PWR_CTL RESET Fig.1-2 (No.YD118)1-21...
3) RS232 waveform during procedure (Downloading) Fig. 1-3 4) Flash R/W enable signal during download (Downloading) IC602 Fig.1-4 1-22 (No.YD118)
5.2.2 SDRAM CLOCK DCLK = 128MHz, Vp-p=2.2, Vmax=2.7V IC603 Fig.2-1 5.2.3 TRAY OPEN/CLOSE SIGNAL INSW OUTSW IC201 CLOSE OPEN Fig.3-1 (No.YD118)1-23...
5.2.4 SLED CONTROL RELATED SIGNAL (NO DISC CONDITION) SLED_S(1.9V/1.4V/1.1V) DRVSB(3.3V) SLED+(4.2V/2.8V/1.2V) SLED-(4.2V/2.8V/1.5V) Fig.4-1 5.2.5 LENS CONTROL RELATED SIGNAL (NO DISC CONDITION) FOCUS_S(1.5V/1.4V/1.3V) FACT+(3.2V/2.7V/2.2V) FACT-(3.2V/2.7V/2.2V) Fig. 5-1 1-24 (No.YD118)
5.2.6 LASER POWER CONTROL RELATED SIGNAL (NO DISC CONDITION) CN201 MDI1(0V/180mV) CD_LD(3.3V//2.3V) DVD_LD(3.3V/2.3V) Fig.6-1 5.2.7 SPINDLE CONTROL WAVEFORM (NO DISC CONDITION) SPINDLE_S(1.4V/1.8V) SP-(3.6V/2.4V) SP+(3.6V/4.8V) Fig.7-1 (No.YD118)1-25...
SCHEMATIC DIAGRAMS DVD PLAYER XV-N450BUC,XV-N452SUC, XV-N452SUM CD-ROM No.SML200706 Area Suffix UC -------------- Canada UM ------ Latin America DISPLAY XV-N450BUC,XV-N452SUC,XV-N452SUM [D7P2] No.YD118SCH COPYRIGHT 2007 Victor Company of Japan, Limited 2007/6...
CHARTS AND DIAGRAMS NOTES OF SCHEMATIC DIAGRAM 4. Voltage measurement 1) Regulator (DC/DC CONV) circuits Safety precautions REC : Colour bar signal. The Components indentified by the symbol PB : Alignment tape (Colour bar). critical for safety. For continued safety, replace safety —...
MAY OCCASIONALLY DIFFER FROM THE ACTUAL with specified part number. BE MODIFIED OR ALTERED WITHOUT PERMISSION CIRCUIT USED. THIS WAY, IMPLEMENTATION OF THE 2. Voltages are DC-measured with a digital voltmeter FROM THE JVC. ALL COMPONENTS SHOULD BE LATEST SAFETY PERFORMANCE during Play mode.
Voltage chart DC VOLTMETER MEASUREMENT METHOD No Disc Play No Disc Play No Disc Play No Disc Play No Disc Play No Disc Play 3.28 1.51 1.61 0.93 0.0002 0.0005 1.61 2.47 3.22 2.16 IC201 Playback 0.0001 0.001 1.59 1.91 0.0003 0.0005 3.28...
* BEWARE OF BOGUS PARTS Parts that do not meet specifications may cause trouble in regard to safety and performance. We recommend that genuine JVC parts be used. * (x_) in a description column shows the number of the used part.
Exploded view of general assembly and parts list Block No. M1MM 3-2(No.YD118)
General assembly Block No. [M][M][M] Symbol No. Part No. Part Name Description Local LG-MBN32047505 TOP COVER 450UC LG-MBN32047501 TOP COVER 452UC,452UM LG-MCQ32325001 Damper (x4) LG-MAZ32047801 Bracket LG-MCV36525102 TRAY FITTING 450UC LG-MCV36525101 TRAY FITTING 452UC,452UM 300 LG-6410RAHP01A Power Cord LG-MGC32047716 Rear Panel 450UC,452UC...
DVD mechanism assembly and parts list Block No. M2MM 015B 015A 012A 012A 3-4(No.YD118)
DVD mechanism Block No. [M][M][M] Symbol No. Part No. Part Name Description Local LG-EAD34861101 Cable FFC LG-5040R-0083A Damper (x2) 012A LG-5040R-0110A Damper (x2) LG-4400R-0010A Belt LG-4470R-0154A Gear LG-4681R-A015A Motor Unclassified 015A LG-EAU36590901 Motor DC 015B LG-4560R-0008A Pulley LG-EBR34880101 PCB Assembly LG-4470R-0176A Gear LG-MEA32088501...
LG-0CE2274C638 Capacitor AL Radial ESS227M6R3T1A5E07G 220uF 20% 6 C209 LG-0CE4764C638 Capacitor AL Radial ESS476M6R3T1A5C07G 47uF 20% 6. LG-EBR35956911 Key board assembly 07 DVD-P JVC Key IN C210 LG-0CH1104K942 Capacitor Ceramic Chip 0603F104Z500CT 100nF -20TO+80% LG-EBR36133520 Main board assembly 450UC C213...
Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C666 LG-0CH1102K562 Capacitor Ceramic Chip 0603B102K500CT 1nF 10% 50V X7R R143 QRD161J-221 C RESISTOR 220Ω 1/6W J C667 LG-0CH1102K562 Capacitor Ceramic Chip 0603B102K500CT 1nF 10% 50V X7R R144 QRE141J-102Y C RESISTOR...
Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R735 NRSA63J-123X MG RESISTOR 12kΩ 1/16W J ZD152 LG-0DZ560009CA Diode Zener MTZJT-775.6B 5.6V 5.45TO5.73V R736 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R744 NRSA63J-104X MG RESISTOR 100kΩ...