Jvc-KDNX-901-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2005 Victor Company of Japan, Limited No.MA161 2005/6 HDD NAVIGATION / DVD RECEIVER MA16120056 KD-NX901 Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . .

2、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . .

3、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26 5TROUBLESHOOTING . . . . . . . . . . . . . .

4、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33 Area suffix E - Southern Europe RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA161) SPECIFICATION NAVIGATION SYSTEM System & ServiceL1, C/A code Global Positioning System Standard Positioning Service Recept

5、ion System15-channel multi-channel reception system Reception Frequency1 575.42 MHz Sensitivity-130 dBm Update Rate1/second, continuous GPS AntennaPolarizationRight Handed Circular Polarization Dimensions (approx.)30.4 mm 11.7 mm 35.5 mm (W H D) Cable (approx.)5.0 m Attachment mat size (approx.)70 m

6、m 70 mm AUDIO AMPLIFIER SECTION Maximum Power OutputFront50 W per channel Rear50 W per channel Continuous Power Output (RMS) Front20 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Rear20 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total h

7、armonic distortion. Load Impedance4 (4 to 8 allowance) Equalizer Control RangeFrequencies60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.4 kHz, 6 kHz, 12 kHz Level10 dB Signal-to-Noise Ratio70 dB Audio output levelDigital (DIGITAL OUT: Optical)Signal wave length: 660 nm Output level: -21 dBm to -15 dBm Line-Out Lev

8、el/Impedance2.0 V/20 k load (full scale) Output Impedance: 1 k Color systemPAL Video output (composite)1 Vp-p/75 Other TerminalsSUBWOOFER OUT,CD changer Steering wheel remote input TUNER SECTION Frequency RangeFM87.5 MHz to 108.0 MHz AM(MW) 522 kHz to 1 620 kHz (LW) 144 kHz to 279 kHz FM TunerUsable

9、 Sensitivity11.3 dBf (1.0 V/75 ) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation40 dB Capture Ratio1.5 dB MW TunerSensitivity20 V Selectivity65 dB LW TunerSensitivity50 V RadioFans.CN 收音机爱 好者资料库 (No.M

10、A161)1-3 Design and specifications are subject to change without notice. DVD/CD PLAYER SECTION Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of Channels2 channels (stereo) Frequency ResponseDVD, fs=48 kHz/96 kHz16 Hz to 20 000 Hz VCD/CD16 Hz to 20 000 Hz Dynamic Rang

11、e96 dB Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 (MPEG Audio Layer 3)Max. Bit Rate320 Kbps WMA (Windows Media Audio)Max. Bit Rate192 Kbps HDD/SD SECTION MP3 (MPEG Audio Layer 3)Max. Bit Rate320 kbps WMA (Windows Media Audio)Max. Bit Rate192 kbps GENERAL Power Requireme

12、ntOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C Allowable Operating Altitude-300 m to +3000 m Dimensions (W H D)Installation Size (approx.)182 mm 52 mm 159 mm Panel Size (approx.)188 mm 58 mm 13 mm Mass (approx.)2.1 kg (

13、excluding accessories) RadioFans.CN 收音机爱 好者资料库 1-8 (No.MA161) SECTION 3 DISASSEMBLY 3.1Main body section 3.1.1Removing the front panel assembly (See Fig1) (1) Push the detach button in the lower right part of the front panel assembly. (2) Remove the front panel assembly. Fig.1 3.1.2Removing the heat

14、 sink (See Fig.2) (1) From the left side of the main body, remove the two screws A and three screws B attaching the heat sink. Fig.2 Front panel assembly Detach button Heat sink AAB (No.MA161)1-9 3.1.3Removing the top chassis assembly (See Figs.3 to 6) Prior to performing the following procedure, re

15、move the front panel assembly, heat sink. Reference: Remove the front panel assembly as required. (1) From the bottom side of the main body, remove the two screws C and screw D attaching the top chassis assembly to the bottom chassis assembly. (See Fig.3) (2) From the both and rear sides of the main

16、 body, remove the six screws E attaching the top chassis assembly to the bot- tom chassis assembly. (See Figs.4 to 6) (3) Lift the top chassis assembly in the direction of the arrow, and disconnect top chassis assembly from the connector CN601 on the main board. (See Figs.3 and 6) (4) Take out the t

17、op chassis assembly from the bottom chassis assembly. Fig.3 Fig.4 Fig.5 Fig.6 C Bottom chassis assembly D CN601 C Bottom chassis assembly Top chassis assembly E Top chassis assembly E Bottom chassis assemblyMain board Top chassis assembly Bottom chassis assembly Rear bracket E E 1-10 (No.MA161) 3.1.

18、4Removing the front chassis assembly (See Figs.7 to 9) Prior to performing the following procedure, remove the front panel assembly, heat sink and top chassis assembly. (1) From the both sides of the top chassis assembly, remove the two screws F attaching the front chassis assembly. (See Figs.7 and

19、8) (2) From the front sides of the top chassis assembly, remove the three screws G attaching the front chassis assembly. (See Fig.9) (3) Take out the front chassis assembly from the top chassis. Fig.7 Fig.8 Fig.9 Top chassis assembly Front chassis F Top chassis assembly Front chassis F Front chassis

20、 assembly G (No.MA161)1-11 3.1.5Removing the CPU board (See Figs.10 and 11) Prior to performing the following procedure, remove the front panel assembly, heat sink and top chassis assembly. (1) From the inside of the top chassis assembly, remove the four screws H attaching the CPU case (bottom). (Se

21、e Fig.10) (2) Release the lock of the connector CN561 on the CPU board, disconnect the card wire from the connector CN561. (See Fig.11) (3) Release the lock of the connector CN531 on the CPU board, disconnect the card wire from the connector CN531. (See Fig.11) (4) Take out the CPU board from the to

22、p chassis assembly. Fig.10 Fig.11 CPU case(botom) H H CN531 CN561 CPU board 1-12 (No.MA161) 3.1.6Removing the HDD (See Fig.12) Prior to performing the following procedure, remove the front panel assembly, heat sink and top chassis assembly. (1) From the inside of the top chassis assembly, remove the

23、 four screws J attaching the HDD. (2) Release the lock of the connector CN562 on the HDD, dis- connect the card wire from the connector CN562. (3) Take out the HDD from the top chassis assembly. Fig.12 3.1.7Removing the DVD (See Fig.13) Prior to performing the following procedure, remove the front p

24、anel assembly, heat sink, front chassis assembly and top chassis assembly. (1) From the inside of the top chassis assembly, remove the three screws K attaching the DVD. (2) Take out the DVD from the top chassis assembly. Fig.13 J J HDD CN562 K K DVD (No.MA161)1-13 3.1.8Removing the main board (See F

25、igs.14 and 15) Prior to performing the following procedure, remove the front panel assembly, heat sink and top chassis assembly. (1) From the rear side of the bottom chassis assembly, remove the screws M and N attaching the rear bracket to the bot- tom chassis assembly. (See Fig.14) (2) From the top

26、 side of the bottom chassis assembly, remove the four screws P attaching the main board to the bottom chassis assembly. (See Fig.15) (3) Release the stopper of the connector CN751 on the main board in an upward direction, disconnect the card wire from the connector CN751. (See Fig.15) (4) Disconnect

27、 the wire from the connectors CN391 and CN705 on the main board. (See Fig.15) Reference: After connecting the wires, fix the wires with the wire holder. (5) Take out the main board from the bottom chassis assem- bly. Fig.14 Fig.15 Rear bracket MN CN751 CN705 CN391 Main board Wire holder P 1-14 (No.M

28、A161) 3.1.9Removing the rear bracket (See Figs.16 and 17) Prior to performing the following procedure, remove the front panel assembly, heat sink, top chassis assembly and main board. (1) Remove the two screws Q attaching the wire holder to the rear bracket. (Figs.16) (2) From the rear side of the m

29、ain board, remove the wires from the rear bracket in the direction of the arrow. (See Fig.17) (3) Remove the two screws R and screws S and U attaching the rear bracket to the main board. (Figs.17) (4) Remove the nut T attaching the GPS antenna terminal. (See Fig.17) (5) Disconnect the wire from the

30、connector CN381 on the main board. (See Fig.16) (6) Take out the main board from the bottom chassis assem- bly. Fig.16 Fig.17 Main board Q CN381 Rear bracket Wire holder Rear bracket WireRT US (No.MA161)1-15 3.1.10 Removing the gear bracket unit (See Fig.18) Prior to performing the following procedu

31、re, remove the front panel assembly, heat sink, top chassis assembly and main board. (1) From the top side of the bottom chassis assembly, remove the screw V attaching the FPC guide. (2) Remove the five screws W attaching the gear bracket unit to the bottom chassis. Reference: When attaching the scr

32、ews V and W, apply a locking agent them. (3) Take out the gear bracket unit from the bottom chassis. Fig.18 VW FPC guide Bottom chassisGear bracket unit W 1-16 (No.MA161) 3.1.11 Removing the switch board (See Figs.19 to 21) Prior to performing the following procedure, remove the front panel assembly

33、. (1) From the rear side of the front panel assembly, remove the five screws X attaching the rear cover assembly to the front panel assembly. (See Fig.19) (2) Release the eight joints a of the front panel assembly and remove the rear cover assembly. (See Fig.20) (3) Take out the switch board from th

34、e front panel assembly. (See Fig.21) Caution: Take care not to lose the spring. Fig.19 Fig.20 Fig.21 XX X Rear cover assembly Joints a Joints a Joints a Rear cover assembly Switch board Front panel assembly Comp. spring (No.MA161)1-17 3.2DVD mechanism assembly 3.2.1Removing the chassis assembly (See

35、 Fig.1) (1) Remove the screw A attaching the lug wire. (2) Remove the six screws B attaching the chassis assembly. (3) Remove the chassis assembly. Fig.1 3.2.2Removing the mechanism control board (See Fig.2) Caution: Before disconnecting the flexible wire extending from the DVD pickup, solder the sh

36、ort-circuit point on the flexible wire using a grounding soldering iron. If you do not follow this instruction, the DVD pickup may be damaged. (1) Turn over the body, and solder the short-circuit points on the flexible wire extending from the DVD pickup. (2) Disconnect the flexible wire from connect

37、or CN101 on the mechanism control board. (3) Disconnect the card wire from connector CN201 on the mechanism control board. (4) Disconnect the flexible wire from connector CN202 on the mechanism control board. (5) Unsolder two soldered points a on the mechanism control board and remove the wire exten

38、ding from the feed motor. (6) Remove the two screws C and screw D attaching the mechanism control board. Caution: As the flexible wire to be connected to CN101, make sure to attach it to the mechanism control board using a double tape. After reassembling, unsolder the short-circuit points. Fig.2 B B

39、 B Chassis assembly A Double tape Feed motor Mechanism control board CN202 CN101 C a D C CN401CN201 Flexible wire Short-circuit points 1-18 (No.MA161) 3.2.3Removing the top cover (See Fig.3) (1) Remove the two screws E attaching the top cover on the back of the body. (2) Remove the top cover upward.

40、 Reference: When reassembling, set part b of the top cover under the bending part c of the chassis frame. 3.2.4Removing the mechanism section (See Figs.3 to 5) Remove the top cover. (1) From the bottom of the body, remove the screw E attaching the lug wire. (See Fig.3) (2) Remove the two screws F at

41、taching the right and left stop- pers on the front side. (See Fig.3) (3) Remove the two floating springs on the bottom of the body. (See Fig.4) (4) Move the mechanism section upward and remove from the chassis frame. The three damper springs come off from the dampers. (See Fig.5) Caution: When reass

42、embling, reattach the damper spring to the damper respectively and insert the three shafts on the bot- tom of the mechanism to the dampers. Before inserting the shaft to the dampers, apply IPA to the hole of damper. Fig.3 Fig.4 Fig.5 E Top cover Stopper Stopper F F b c E Floating spring Mechanism se

43、ction Damper (R) (Purple) Damper (F) (Black) Damper (F) (Black) Chassis frame Damper SP.(F) (Silver) Damper SP.(F) (Silver) Damper SP.(R) (Red) (No.MA161)1-19 3.2.5Removing the clamper unit (See Figs. 6 to 10) Remove the top cover and the mechanism section. (1) Remove the clamper2 spring on the bott

44、om of the mecha- nism section. (See Figs.6.and 10) (2) Release the part d of the clamper spring from the bending part of the chassis base assembly. (See Fig.8) (3) Move the clamper unit in the direction of the arrow and turn. Release the two joints e and f, then remove the clamper unit upward. (See

45、Fig.6) 3.2.6Reattaching the clamper unit (See Figs. 6 to 10) (1) Attach the clamper spring to the clamper unit. (See Fig.9) (2) Move the clamper unit to set the side joints e and f to each boss of the chassis base assembly. Make sure that part g is inserted to the notch of the chassis base assembly.

46、 (See Figs.6 and 10) (3) Move the part d of the clamper spring to the outside of the bending part of the chassis base assembly. (See Fig.8) (4) Attach the clamper2 spring to the chassis base assembly. (See Figs.6 and 7) Caution: When reattaching, temporarily hook the end of the clamper spring as sho

47、wn in the figure to make the work easy. (See Fig.9) Fig.6 Fig.7 Clamper unit Clamper spring Clamper2 spring g f e Chassis base assembly Clamper2 spring Chassis base assembly 1-20 (No.MA161) Fig.8 Fig.9 Fig.10 Clamper spring Chassis base assembly d Clamper unit Clamper spring Notch g Clamper unit (No

48、.MA161)1-21 3.2.7Removing the front unit (See Figs.11 to 13) Remove the top cover and the mechanism section. (1) Disconnect the flexible wire from connector CN202 on the mechanism control board at the bottom of the body. (See Fig.11) (2) Remove the screw G attaching the front unit on the top of the

49、body. (See Fig.12) (3) Move the front unit toward the front to release joint h, and release two joints j and k on the right side of the chassis base assembly. Then remove the front unit upward. (See Figs.12 and 13) (4) Remove the two screws H attaching the switch board. (See Fig.13) Reference: You can remove the switch board only without removing the front unit. Caution: When reassembling, attach the flexible wire extending from the switch board using the double tape. (See Figs.11 and 13) Fig.11 Fig.12 Fig.13 Mechanism control board F