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1、SERVICE MANUAL COPYRIGHT 2005 Victor Company of Japan, Limited No.MA173 2005/3 DVD/CD RECEIVER MA17320053 KD-DV5188 TABLE OF CONTENTS 1PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIF
2、IC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 4ADJUS
3、TMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4、1-29 - - RadioFans.CN 收音机爱 好者资料库 1- 2 (No.MA173) SPECIFICATION Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront50 W per channel Rear50 W per channel Continuous Power Output (RMS) Front19 W per channel into 4 , 40 Hz to 20 000 Hz at no
5、more than 0.8% total harmonic distortion. Rear19 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Load Impedance4 (4 to 8 allowance) Equalizer Control RangeFrequencies60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.4 kHz, 6 kHz, 15 kHz Level10 dB Signal- to- Noise Ratio70 dB
6、 Audio Output LevelDigital (DIGITAL OUT: Optical)Signal wave length : 660 nm Output level : - 21 dBm to - 15 dBm Line- Out Level/Impedance2.5 V/20 k load (full scale) Output Impedance1 k Color SystemPAL/NTSC Video Output (composite)1 Vp- p/75 Other TerminalsLINE IN, CD changer TUNER SECTION Frequenc
7、y RangeFM87.5 MHz to 108.0 MHz AM531 kHz to 1 602 kHz FM TunerUsable Sensitivity11.3 dBf (1.0 k kV/75) 50 dB Quieting Sensitivity16.3 dBf (1.8 k kV/75) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation35 dB Capture Ratio1.5 dB AM TunerSensitivity20
8、k kV Selectivity35 dB 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 22 000 Hz VCD, CD, MP3, WMA16 Hz to 20 000 Hz Dynamic Range96 dB Signal- to- Noise Ratio98 dB Wow
9、 and FlutterLess than measurable limit MP3 (MPEG Audio Layer 3)Max. Bit Rate: 320 kbps WMA (Windows Media Audio)Max. Bit Rate: 192 kbps GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0p pC to +40p pC Dimensi
10、ons (W I I H I I D)Installation Size (approx.)182 mm I I 52 mm I I 158 mm Panel Size (approx.)188 mm I I 58 mm I I 11 mm Mass (approx.)1.7 kg (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA173)1- 3 SECTION 1 PRECAUTIONS 1.1Safety Precautions - - - - - - - - - - - - - - - - - - - - - - - - - -
11、 - - RadioFans.CN 收音机爱 好者资料库 1- 4 (No.MA173) 1.2Preventing 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 performi
12、ng repairs. 1.2.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the workbench Ground the wo
13、rkbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it. (2) Ground yourself Use an anti- static wrist strap to release any static electricity built up in your body. (3) Handling the optical pickup In order t
14、o maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.) Do not use a tester to check the condition of the laser diode in the
15、 optical pickup. The testers internal power source can easily destroy the laser diode. 1.3Handling the traverse unit (optical pickup) (1) Before disconnecting the flexible wire from the connector CN101 on the mechanism control board, solder the short- circuit points on the flexible wire. Caution: If
16、 you do not follow this instruction, the DVD pickup may be damaged. (2) Disconnect the flexible wire from the connector CN101 on the mechanism control board. (3) Remove the solders from the short- circuit points on the flexible wire after replacing the DVD pickup. (4) Connect the flexible wire to th
17、e connector CN101 on the mechanism control board. - - - - - - - - - - - - (No.MA173)1- 5 1.4Important for laser products - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
18、 - - - -; *- - -; - - -; *- - -; - - - - * - - - - - - - - * - - - - - - -; ; - ; ; - -; - -; ; - ; ; - -; 1- 6 (No.MA173) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MA173)1- 7 SECTION 3 DISASSEMBLY 3.1Main body section 3.1.1Remov
19、ing the front panel assembly (See Fig.1) Push the detach button in the lower left part of the front panel as- sembly and remove the front panel assembly. Fig.1 3.1.2Removing the bottom cover (See Fig.2) Reference: Remove the front panel assembly as required. (1) Release the two joints a, two joints
20、b and joint c. (2) Remove the bottom cover from the main body. Caution: Do not damage the main board when releasing the joints using a screwdriver or a similar tool. Fig.2 - - 1- 8 (No.MA173) 3.1.3Removing the front chassis assembly (See Figs.3 and 4) Remove the front panel assembly and bottom cover
21、. (1) From the front side of the main body, remove the two screws A attaching the front chassis assembly. (See Fig.3.) (2) From the both sides of the main body, remove the two screws B attaching the front chassis assembly. (See Fig.4.) (3) Release the two joints d and two joints e. (See Fig.4.) Fig.
22、3 Fig.4 3.1.4Removing the side heat sink (See Fig.5) Reference: Remove the front panel and front chassis assemblies as re- quired. From the left side of the main body, remove the two screws C and three screws D attaching the side heat sink. Fig.5 - - - - - - - - - - (No.MA173)1- 9 3.1.5Removing the
23、rear bracket (See Fig.6) Remove the bottom cover. (1) From the back side of the main body, remove the two screws E, two screws E, screw F, two screws G and three screws H attaching the rear bracket. (2) Remove the LINE IN cable from the rear bracket in the di- rection of the arrow. Reference: When a
24、ttaching the LINE IN cable, insert it in a slot of the rear bracket and hang it on a wire holder. When attaching the screws E, attach the cable holders with them. 3.1.6Removing the main board (See Figs.6 and 7) Remove the front panel assembly, bottom cover, front chassis assembly and side heat sink.
25、 Reference: Remove the rear bracket as required. (1) From the back side of the main body, remove the three screws H attaching the main board. (See Fig.6.) (2) From the bottom side of the main body, remove the three screws J attaching the main board. (See Fig.7.) (3) Disconnect the connector CN961 on
26、 the main board from the DVD mechanism assembly and take out the main board from the main body. (See Fig.7.) Fig.6 Fig.7 3.1.7Removing the DVD mechanism assembly (See Fig.8) Remove the front panel assembly, bottom cover, front chassis assembly, side heat sink and main board. (1) From the inside of t
27、he top chassis, remove the three screws K attaching the DVD mechanism assembly. (2) Take out the DVD mechanism assembly from the top cha sis. Fig.8 - - - - - - 1- 10 (No.MA173) 3.1.8Removing the main sub board (See Figs.9 to 11) Remove the front panel assembly, bottom cover, front chassis assembly,
28、side heat sink, main board and DVD mechanism as- sembly. (1) From the top side of the DVD mechanism assembly, re- move the two screws L attaching the dust cover. (See Fig.9.) (2) Remove the dust cover from the DVD mechanism assem- bly. (See Fig.9.) Reference: When attaching the dust cover, align the
29、 joints f in the holes of the dust cover before attaching the screws L. (See Fig.9.) (3) Release the lock of the connector CN962 on the main sub board and disconnect the card wire. (See Fig.10.) (4) Bend the joint g in the direction of the arrow. (See Fig.10.) (5) Remove the two screws M attaching t
30、he main sub board and remove the main sub board from the DVD mechanism assembly. (See Fig.10.) Reference: When attaching the main sub board, align the joints h in the holes of the main sub board before attaching the screws M. (See Fig.10.) When the resolution of DVD mechanism assembly is done sequen
31、tially, remove the two screws N attaching the support bracket. (See Fig.11.) Remove the card wire from the connector CN401 as re- quired. (See Fig.11.) Fig.9 Fig.10 Fig.11 - - - - - - - - - - - - (No.MA173)1- 11 3.1.9Removing the switch board (See Figs. 12 to 14) Remove the front panel assembly. (1)
32、 From the back side of the front panel assembly, remove the five screws P attaching the rear cover. (See Fig.12.) (2) Release the ten joints i attaching the rear cover to the front panel assembly. (See Fig.13.) (3) Take out the switch board while lifting the switch board from the front panel assembl
33、y little by little. (See Fig.14.) Reference: Remove the volume knob from the front side of the front panel assembly at the same time. Note: Do not lose the compression springs when removing the switch board. (See Fig.14.) Fig.12 Fig.13 Fig.14 - - - - - - - - - - 1- 12 (No.MA173) 3.2DVD mechanism ass
34、embly 3.2.1Removing the mechanism control board (See Fig.1) Caution: Before disconnecting the flexible wire extending from the DVD pickup, solder the short- 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)
35、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 connector CN101 on the mechanism control board. (3) Disconnect the card wire from connector CN201 on the mechanism control board. (4) Disconnect the flex
36、ible wire from connector CN202 on the mechanism control board. (5) Unsolder two soldered points a on the mechanism control board and remove the wire extending from the feed motor. (6) Remove the screw A attaching the lug wire. (7) Remove the two screws B and screw C attaching the mechanism control b
37、oard. 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.1 - - - - (No.MA173)1- 13 3.2.2Removing the top cover (See Fig.2) (1) Remove the two screws D attaching
38、 the top cover on the back of the body. (2) Remove the top cover upward. Reference: When reassembling, set part b of the top cover under the bending part c of the chassis frame. 3.2.3Removing the mechanism section (See Fig.2 to 4) Remove the top cover. (1) From the bottom of the body, remove the scr
39、ew E attaching the lug wire. (See Fig.2.) (2) Remove the two screws F attaching the right and left stop- pers on the front side. (See Fig.2.) (3) Remove the two floating springs on the bottom of the body. (See Fig.3.) (4) Move the mechanism section upward and remove from the chassis frame. The three
40、 damper springs come off from the dampers. (See Fig.4.) Caution: When reassembling, 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.2 Fig
41、.3 Fig.4 - - - - - - - 1- 14 (No.MA173) 3.2.4Removing the clamper unit (See Fig.5 to 7) Remove the top cover and the mechanism section. (1) Remove the clamper2 spring on the bottom of the mecha- nism section. (See Figs.5.and 6.) (2) Release the part d of the clamper spring from the bending part of t
42、he chassis base assembly. (See Fig.7.) (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 Fig.6.) 3.2.5Reattaching the clamper unit (See Fig.5 to 9) (1) Attach the clamper spring to the clamper unit. (See Fig.8.
43、) (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. (See Figs.5 and 9.) (3) Move the part d of the clamper spring to the outside of the bending part of the chassis base asse
44、mbly. (See Fig.7.) (4) Attach the clamper2 spring to the chassis base assembly. (See Figs.5 and 6.) Caution: When reattaching, temporarily hook the end of the clamper spring as shown in the figure to make the work easy. (See Fig.8.) Fig.5 Fig.6 Fig.7 - - - - - - - - - - - - - - - - - - - - - - - - (No.MA173)1- 15 Fig.8 Fig.9 - - 1- 16 (No.MA173) 3.2.6Removing the front unit (Se
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