JVC KDDV-5188 Service manual
SERVICE MANUAL
DVD/CD RECEIVER
MA17320053
KD-DV5188
ß®»¿ -«ºº·¨
ЛЪ уууууууууууууууууууууууууу Э¸·²¿
TABLE OF CONTENTS
1PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
COPYRIGHT © 2005 Victor Company of Japan, Limited
No.MA173
2005/3
SPECIFICATION
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 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
Level±10 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 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
Frequency RangeFM87.5 MHz to 108.0 MHz
AM531 kHz to 1 602 kHz
FM TunerUsable Sensitivity11.3 dBf (1.0 kV/75 )
50 dB Quieting Sensitivity16.3 dBf (1.8 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 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 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 Temperature0pC to +40pC
Dimensions (W I H I D)Installation Size (approx.)182 mm I 52 mm I 158 mm
Panel Size (approx.)188 mm I 58 mm I 11 mm
Mass (approx.)1.7 kg (excluding accessories)
Design and specifications are subject to change without notice.
1-2 (No.MA173)
1.1Safety Precautions
SECTION 1
PRECAUTIONS
ÿ
ÿ
Þ«®®- º±®³»¼ ¼«®·²¹ ³±´¼·²¹ ³¿§ ¾» ´»º¬ ±ª»® ±² -±³» °¿®¬- ±º ¬¸» ½¸¿--·-ò ̸»®»º±®»ô
°¿§ ¿¬¬»²¬·±² ¬± -«½¸ ¾«®®- ·² ¬¸» ½¿-» ±º °®»º±®³·²¹ ®»°¿·® ±º ¬¸·- -§-¬»³ò
д»¿-» «-» »²±«¹¸ ½¿«¬·±² ²±¬ ¬± -»» ¬¸» ¾»¿³ ¼·®»½¬´§ ±® ¬±«½¸ ·¬ ·² ½¿-» ±º ¿²
¿¼¶«-¬³»²¬ ±® ±°»®¿¬·±² ½¸»½µò
(No.MA173)1-3
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 performing 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 workbench 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.
ø½¿°¬·±²÷
ß²¬·ó-¬¿¬·½ ©®·-¬ -¬®¿°
ïÓ
ݱ²¼«½¬·ª» ³¿¬»®·¿´
ø½±²¼«½¬·ª» -¸»»¬÷ ±® ·®±² °´¿¬»
(3)Handling the optical pickup
In order to 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 optical pickup. The tester's 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 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 the connector CN101 on the mechanism control board.
Ú´»¨·¾´» ©·®»
ЭТпрп
1-4 (No.MA173)
͸±®¬ó½·®½«·¬ °±·²¬-
Ó»½¸¿²·-³ ½±²¬®±´ ¾±¿®¼
1.4Important for laser products
птЭФЯНН п ФЯНЫО РОСЬЛЭМ
отЬЯТЩЫО ж ײª·-·¾´» ´¿-»® ®¿¼·¿¬·±² ©¸»² ±°»² ¿²¼ ·²¬»®
´±½µ º¿·´»¼ ±® ¼»º»¿¬»¼ò ߪ±·¼ ¼·®»½¬ »¨°±-«®» ¬± ¾»¿³ò
нтЭЯЛМЧСТ ж ̸»®» ¿®» ²± -»®ª·½»¿¾´» °¿®¬- ·²-·¼» ¬¸»
Ô¿-»® ˲·¬ò ܱ ²±¬ ¼·-¿--»³¾´» ¬¸» Ô¿-»® ˲·¬ò λ°´¿½»
¬¸» ½±³°´»¬» Ô¿-»® ˲·¬ ·º ·¬ ³¿´º«²½¬·±²-ò
мтЭЯЛМЧСТ ж М¸» ЭЬфУЬ ¿²¼ ЬКЬ °´¿§»® «-»- ·²ª·-·¾´»
´¿-»® ®¿¼·¿¬·±² ¿²¼ ·- »¯«·°°»¼ ©·¬¸ -¿º»¬§ -©·¬½¸»- ©¸·½¸
°®»ª»²¬ »³·--·±² ±º ®¿¼·¿¬·±² ©¸»² ¬¸» ¼®¿©»® ·- ±°»² ¿²¼
¬¸» -¿º»¬§ ·²¬»®´±½µ- ¸¿ª» º¿·´»¼ ±® ¿®» ¼»º»¿¬»¼ò ׬ ·-
¼¿²¹»®±«- ¬± ¼»º»¿¬ ¬¸» -¿º»¬§ -©·¬½¸»-ò
лтЭЯЛМЧСТ ж ׺ -¿º»¬§ -©·¬½¸»- ³¿´º«²½¬·±²ô ¬¸» ´¿-»® ·- ¿¾´»
¬± º«²½¬·±²ò
ктЭЯЛМЧСТ ж Ë-» ±º ½±²¬®±´-ô ¿¼¶«-¬³»²¬- ±® °»®º±®³¿²½» ±º
°®±½»¼«®»- ±¬¸»® ¬¸¿² ¬¸±-» -°»½·º·»¼ ¸»®» ·² ³¿§ ®»-«´¬ ·²
¸¿¦¿®¼±«- ®¿¼·¿¬·±² »¨°±-«®»ò
д»¿-» «-» »²±«¹¸ ½¿«¬·±² ²±¬ ¬±
-»» ¬¸» ¾»¿³ ¼·®»½¬´§ ±® ¬±«½¸ ·¬
·² ½¿-» ±º ¿² ¿¼¶«-¬³»²¬ ±® ±°»®¿¬·±²
½¸»½µò
ОЫРОСЬЛЭМЧСТ ЯТЬ РСНЧМЧСТ СЪ ФЯЮЫФН
ЙЯОТЧТЩ ФЯЮЫФ
ЭЯЛМЧСТ æ Ê·-·¾´» ¿²¼ ײª·-·¾´»
ЭФЯНН п
ФЯНЫО РОСЬЛЭМ
´¿-»® ®¿¼·¿¬·±² ©¸»² ±°»² ¿²¼
·²¬»®´±½µ º¿·´»¼ ±® ¼»º»¿¬»¼т
ЯКСЧЬ ЬЧОЫЭМ ЫИРСНЛОЫ МС
ЮЫЯУт ш»ч
ЯЬКЯОНЫФ æ ͧ²´·¹ ±¹ «-§²´·¹
´¿-»®-¬®;´·²¹ ²;® ³¿-µ·²»² »®
;¾»² »´´»® ·²¬»®´±½µ»² º»¶»´»®ò
˲¼¹; ¼·®»µ¬» »µ-°±²»®·²¹ ¬·´
-¬®;´·²¹ò ø¼÷
КЯОТЧТЩ æ ͧ²´·¹ ±½¸
±-§²´·²¹ ´¿-»®-¬®;´²·²¹ ²<®
¼»² *°°²¿- ±½¸ -°<®®»² <®
«®µ±°°´¿¼ò Þ»¬®¿µ¬¿ »¶
-¬®;´»²ò ø-÷
ÊßÎÑ æ ߪ¿¬¬¿»--¿ ¶¿ -«±¶¿´«µ·¬«±¸·¬»¬¬«²¿ ¬¿· ª·¿´´·-»²¿ ±´»¬ ¿´¬¬··²¿
²<µ§ª<´´» ¶¿ ²<µ§³<¬¬*³<´´»
´¿-»®-<¬»·´§´´»ò Ê<´¬< -<¬»»²
µ±¸¼·-¬«³·-¬¿ -«±®¿¿² ·¬-»»-·ò øº÷
(No.MA173)1-5
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
1-6 (No.MA173)
SECTION 3
DISASSEMBLY
3.1Main body section
3.1.1Removing the front panel assembly
(See Fig.1)
Push the detach button in the lower left part of the front panel assembly and remove the front panel assembly.
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 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.
Ú®±²¬ °¿²»´ ¿--»³¾´§
Ü»¬¿½¸ ¾«¬¬±²
¾
Fig.1
Þ±¬¬±³ ½±ª»®
¿
¿
¾
½
Fig.2
(No.MA173)1-7
3.1.3Removing the front chassis assembly
(See Figs.3 and 4)
Remove the front panel assembly and bottom cover.
(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.)
Ú®±²¬ ½¸¿--·- ¿--»³¾´§
ß
Fig.3
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.
¼
Þ
¼
Ú®±²¬ ½¸¿--·- ¿--»³¾´§
Fig.4
»
Þ
»
Ý
1-8 (No.MA173)
Ü
Í·¼» ¸»¿¬ -·²µ
Fig.5
3.1.5Removing the 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 attaching 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.
Ô×ÒÛ ×Ò ½¿¾´»
λ¿® ¾®¿½µ»¬
Ý¿¾´» ¸±´¼»®
Í´±¬
É·®» ¸±´¼»®
ØÛÛù
Ý¿¾´» ¸±´¼»®
λ¿® ¾®¿½µ»¬
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.
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 the main board from
the DVD mechanism assembly and take out the main
board from the main body. (See 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 the top chassis, remove the three
screws K attaching the DVD mechanism assembly.
(2)Take out the DVD mechanism assembly from the top cha
sis.
Ûù
Ø
Õ
Ú
Ù
Fig.6
ЭТзкп
Ö
Fig.7
ÜÊÜ ³»½¸¿²·-³ ¿--»³¾´§
Û
Ø
Ö
Ö
Ó¿·² ¾±¿®¼
Õ
Õ
Fig.8
̱° ½¸¿--·-
(No.MA173)1-9
3.1.8Removing the main sub board
(See Figs.9 to 11)
Remove the front panel assembly, bottom cover, front chassis
assembly, side heat sink, main board and DVD mechanism assembly.
(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 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 the 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
sequentially, 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.)
ÜÊÜ ³»½¸¿²·-³ ¿--»³¾´§
Ü«-¬ ½±ª»®
Fig.9
ÜÊÜ ³»½¸¿²·-³ ¿--»³¾´§
¸
ЭТзко
Ô±½µ
Ô
º
Ô
º
¹
Ó
Í«°°±®¬ ¾®¿½µ»¬
Ò
¸
Ó¿·² -«¾ ¾±¿®¼
Fig.10
Fig.11
Ý¿®¼ ©·®»
ЭТмрп
Ý¿®¼ ©·®»
1-10 (No.MA173)
3.1.9Removing the switch board
(See Figs. 12 to 14)
Remove the front panel assembly.
(1)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 assembly 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.)
λ¿® ½±ª»®
Ð
Ú®±²¬ °¿²»´ ¿--»³¾´§
Ð
Ð
Fig.12
·
·
λ¿® ½±ª»®
Í©·¬½¸ ¾±¿®¼
ݱ³°®»--·±² -°®·²¹
·
·
Fig.13
Ú®±²¬ °¿²»´ ¿--»³¾´§
ݱ³°®»--·±² -°®·²¹
Fig.14
(No.MA173)1-11
3.2DVD mechanism assembly
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)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
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 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 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.
on the
Ú´»¨·¾´» ©·®»
ܱ«¾´» ¬¿°»
ЭТпрп
Ô«¹ ©·®»
ß
Þ
͸±®¬ó½·®½«·¬ °±·²¬-
Þ
ЭТорп
Ú»»¼ ³±¬±®
¿
Ý
ЭТоро
Ó»½¸¿²·-³ ½±²¬®±´ ¾±¿®¼
Fig.1
1-12 (No.MA173)
Loading...