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JVC KD-SC900R Service Manual

Cd receiver
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3 7 63 1515 0
SERVICE MANUAL
04
2003
49829
TE
L 13942296513
1
Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2
Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3
Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
4
Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
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http://www.xiaoyu163.com
CD RECEIVER
KD-SC900R
TABLE OF CONTENTS
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COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
http://www.xiaoyu163.com
2 9
8
Q Q
3
6 7
1 3
1 5
E ------------- Continental Europe
EX ---------------- Central Europe
co
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9 4
2 8
Area Suffix
0 5
8
2 9
9 4
2 8
m
No.49829
KD-SC900R
9 9
9 9
2003/04

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  • Page 1 KD-SC900R 3 7 63 1515 0 SERVICE MANUAL CD RECEIVER 49829 2003 KD-SC900R Area Suffix L 13942296513 E ------------- Continental Europe EX ---------------- Central Europe TABLE OF CONTENTS Important Safety Precautions ............1-2 Disassembly method .

  • Page 2: Important Safety Precautions

    KD-SC900R 3 7 63 1515 0 SECTION 1 Important Safety Precautions 1.1 Safety Precautions Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system.
  • Page 3 KD-SC900R 3 7 63 1515 0 1.2 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.

  • Page 4: Disassembly Method

    KD-SC900R 3 7 63 1515 0 SECTION 2 Disassembly method 2.1 Main body 2.1.1 Removing the front panel assembly Front panel assembly (See Fig.1) (1) Push the detach button in the lower left part of the front panel assembly and remove the front panel assembly in the direction of the arrow.
  • Page 5 KD-SC900R 3 7 63 1515 0 2.1.3 Removing the heat sink (See Fig.5) (1) Remove the two screws C and one screws D on the left side of the main body. Heat sink Fig.5 2.1.4 Removing the bottom cover (See Figs.6 and 7)
  • Page 6 KD-SC900R 3 7 63 1515 0 2.1.5 Removing the rear bracket (See Fig.8) Rear bracket • Prior to performing the following procedure, remove the front panel assembly, front chassis assembly, heat sink and bottom cover. (1) Remove the three screws E, one screws F and two screws G on the back of the body.
  • Page 7 KD-SC900R 3 7 63 1515 0 2.1.8 Removing the front board (See Figs.11 to 13) • Prior to performing the following procedure, remove the front panel assembly. (1) Remove the four screws K on the back side of the front panel assembly.
  • Page 8 KD-SC900R 3 7 63 1515 0 2.2 CD Mechanism Assembly 2.2.1 Removing the top cover (See Figs.1 and 2) (1) Remove the two screws A on the both side of the body. (2) Lift the front side of the top cover and move the top cover backward to release the two joints a.
  • Page 9 KD-SC900R 3 7 63 1515 0 2.2.2 Removing the connector board Wires (See Figs.3 to 5) CAUTION: Before disconnecting the flexible wire from the pickup, solder the short-circuit point on the pickup. No observance of this in- struction may cause damage of the pickup.
  • Page 10 KD-SC900R 3 7 63 1515 0 2.2.3 Removing the DET switch (See Figs.6 and 7) (1) Extend the two tabs c of the feed sw. holder and pull out the switch. (2) Unsolder the DET switch wire if necessary.
  • Page 11 KD-SC900R 3 7 63 1515 0 2.2.4 Removing the chassis unit (See Figs.8 and 9) • Prior to performing the following procedure, remove the top Chassis unit cover and connector board. Suspension spring (L) Suspension spring (R) (1) Remove the two suspension springs (L) and (R) attaching the chassis unit to the frame.
  • Page 12 KD-SC900R 3 7 63 1515 0 2.2.5 Removing the clamper assembly (See Figs.10 and 11) • Prior to performing the following procedure, remove the top cover. (1) Remove the clamper arm spring. Clamper arm spring (2) Move the clamper assembly in the direction of the arrow to release the two joints d.
  • Page 13 KD-SC900R 3 7 63 1515 0 2.2.6 Removing the loading / feed motor assembly (See Figs.12 and 13) • Prior to performing the following procedure, remove the top cover, connector board and chassis unit. (1) Remove the screw C and move the loading / feed motor assembly in the direction of the arrow to remove it from the chassis rivet assembly.
  • Page 14 KD-SC900R 3 7 63 1515 0 2.2.7 Removing the pickup unit Pickup unit (See Figs.14 to 18) • Prior to performing the following procedure, remove the top cover, connector board and chassis unit. (1) Remove the screw D and pull out the pu. shaft holder from Part e the pu.
  • Page 15 KD-SC900R 3 7 63 1515 0 2.2.9 Removing the trigger arm Joint k (See Figs.19 and 20) • Prior to performing the following procedure, remove the top cover, connector board and clamper unit. (1) Turn the trigger arm in the direction of the arrow to release Trigger arm the joint k and pull out upward.
  • Page 16 KD-SC900R 3 7 63 1515 0 2.2.11 Removing the mode sw. / select lock arm Link plate Joint t (See Figs.22 and 23) Mode sw. • Prior to performing the following procedure, remove the top plate assembly. Select lock arm (1) Bring up the mode sw.
  • Page 17 KD-SC900R 3 7 63 1515 0 2.2.12 Reassembling the mode sw. / select lock arm Select lock arm spring (See Figs.24 to 26) Hook w REFERENCE: Reverse the above removing procedure. Joint v (1) Reattach the select lock arm spring to the top plate and set...
  • Page 18 KD-SC900R 3 7 63 1515 0 2.2.13 Removing the select arm R / link plate Joint c' Link plate Joint r (See Figs.27 and 28) Select arm R Joint b' • Prior to performing the following procedure, remove the top plate assembly.
  • Page 19 KD-SC900R 3 7 63 1515 0 2.2.15 Removing the loading roller assembly Loading roller assembly (See Figs.31 to 33) • Prior to performing the following procedure, remove the Roller guide spring clamper assembly and top plate assembly. (1) Push inward the loading roller assembly on the gear side and detach it upward from the slot of the joint g' of the lock arm rivet assembly.
  • Page 20 KD-SC900R 3 7 63 1515 0 2.2.16 Removing the loading gear 5, 6 and 7 Loading gear bracket (See Figs.35 and 36) • Prior to performing the following procedure, remove the top Loading gear 6 cover, chassis unit, pickup unit and top plate assembly.

  • Page 21: Pull Out The Loading Gear

    KD-SC900R 3 7 63 1515 0 2.2.17 Removing the gears Joint p' (See Figs.37 to 40) • Prior to performing the following procedure, remove the top Change plate rivet assembly cover, chassis unit, top plate assembly and pickup unit.

  • Page 22: Http://Www.xiaoyu163.Com

    KD-SC900R 3 7 63 1515 0 2.2.18 Removing the turn table / spindle motor Turn table (See Figs.41 and 42) • Prior to performing the following procedure, remove the top cover, connector board, chassis unit and clamper assembly. (1) Remove the two screws L attaching the spindle motor as- sembly through the slot of the turn table on top of the body.
  • Page 23 KD-SC900R 3 7 63 1515 0 2.3 Finder Plate Design Model Name : KD-SC900R Factory Setting Design Name : CARBON BLACK Design Name : LEOPARD Design Name :SAPPHIRE BLUE L 13942296513 Design Name : SILVER HAIRLINE u163 (No.49829)1-23 http://www.xiaoyu163.com...

  • Page 24: Adjustment

    Frequency Band 6. Digital tester 87.5 MHz to 108.0 MHz 7. Tracking offset meter AM(MW) 522 kHz to 1620 kHz 8. Test Disc JVC :CTS-1000 (LW) 144 kHz to 279 kHz 9. Extension cable for check EXTSH002-22P 1 Dummy load Exclusive dummy load should be used for AM,and FM.
  • Page 25 KD-SC900R 3 7 63 1515 0 3.2 Flow of functional operation unit TOC read Power ON When the laser diode correctly Set Function CD When the pickup correctly moves emits to the inner area of the disc Microprocessor $82 $81...
  • Page 26 KD-SC900R 3 7 63 1515 0 3.2.1 Feed section Is the voltage output at Is the wiring for IC501 Is 3.3V present at IC501 IC541 pin "40" 5V or 0V? pin 27? pin "20"? Check CD 8V Check the vicinity of and 5V.
  • Page 27 KD-SC900R 3 7 63 1515 0 3.3 Maintenance of laser pickup 3.4 Replacement of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to clean the lens Turn off the power switch and,disconnect the with a alcohol soaked cotton swab.

  • Page 28: Description Of Major Ics

    KD-SC900R 3 7 63 1515 0 SECTION 4 Description of major ICs 4.1 AK4381VT-X (IC481) : D/A converter • Pin layout MCLK DZFL BICK DZFR SDTI LRCK AOUTL+ AOUTL- CCLK AOUTR+ CDTI AOUTR- • Block diagram MCLK De-emphasis Clock...
  • Page 29 KD-SC900R 3 7 63 1515 0 4.2 AN80T07 (IC901) : Regulator • Block diagram MODE1 *ASO, Peak Current Protection. *Thermal Protection (Except VDD, Comp output). Outputs Reference Voltage Drive Drive Drive Drive MODE2 SW5V BATT.DET COMP AUDIO 5.7V 8.0V 9.0V...
  • Page 30 KD-SC900R 3 7 63 1515 0 4.3 BR24C16F-X (IC771) : EEPROM • Pin layout • Pin function Symbol Function Power supply. A0,A1,A2 No use connect to GND. Serial clock input. Serial data I/O of slave and ward address. Write protect terminal.
  • Page 31 KD-SC900R 3 7 63 1515 0 4.5 LC75823W (IC601) : LCD driver • Pin Layout 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 •...
  • Page 32 KD-SC900R 3 7 63 1515 0 4.6 LA4743K (IC301) : Power amp. • Block diagram 2200 F 0.022 F Vcc 1/2 Vcc 3/4 IN 1 OUT 1+ 0.22 F OUT 1- PWR GND1 Protective circuit OUT 2+ IN 2 OUT 2- 0.22 F...
  • Page 33 KD-SC900R 3 7 63 1515 0 • Pin layout • Pin function Pin No. Symbol Function Pin No. Symbol Function Header of IC FLIN Front Lch input Power GND RLIN Rear Lch input Outpur(-) for front Rch ONTIME Power on time control...
  • Page 34 KD-SC900R 3 7 63 1515 0 4.7 LA6579H-X (IC501) : 4-Channel bridge driver • Pin layout & Block diagram VIN1-A VIN1 VIN1_SW [H]: OP-AMP_A [L]: OP-AMP_B VIN1+A VIN1-B VCCP1 VIN1+B Signal system S-GND power supply VIN1-SW All outputs ON/OFF...
  • Page 35 KD-SC900R 3 7 63 1515 0 • Pin function Pin No. Symbol Function VIN1-A CH1 input AMP_inverted input VIN1+A CH1 input AMP_non-inverted input VCCP1 CH1 and CH2 power stage power supply VO1+ Output pin(+)for channel 1 VO1- CH1 output pin (-) for channel 1...
  • Page 36 KD-SC900R 3 7 63 1515 0 4.8 NJM4565M-WE (IC581) : CD L.P.F. A OUTPUT A INPUT B OUTPUT B INPUT A INPUT B INPUT 4.9 NJU7241F25-X (IC461) : Regulator • Pin layout GND 1 5 STB VIN 2 VOUT 3...
  • Page 37 KD-SC900R 3 7 63 1515 0 4.10 NJU7241F33-X (IC471) : Voltage regulator PIN FUNCTION 1. GND 2. V 3. V 4. +NC 5. STB 4.11 RPM6938-SV4 (IC602) : Remote control receiver • Pin diagram • Block diagram Comp Rout...
  • Page 38 KD-SC900R 3 7 63 1515 0 4.12 SAA6579T-X (IC71) : RDS detecter • Pin layout QUAL DATA Vref OSCO OSCI TEST SCOUT MODE • Block diagram ANTI- 57 kHz OSCILLATOR QUALITY BIT RECONSTRUCTION ALIASING BAND PASS GENERATOR FILTER FILTER...
  • Page 39 KD-SC900R 3 7 63 1515 0 4.13 TB2118F-X (IC31) : PLL • Terminal Layout • Block diagram Constant power supply voltage Buff. ON/OFF AM CP. Phase OSC circuit Reference Counter Comparator switch FM VCO 4-bit Prescaler Swallow counter 12-bit...
  • Page 40 KD-SC900R 3 7 63 1515 0 4.14 TA2157FN-X (IC521) : RF amp • Terminal layout • Block diagram PEAK 50 A BOTTOM PEAK L 13942296513 1.75k 240k 15pF x0.5 240k 15pF x0.5 180k 40pF RFGC (APC SW) (TE BAL)
  • Page 41 KD-SC900R 3 7 63 1515 0 • Pin function Pin No. Symbol Function 3.3V power supply pin Main-beam amp input pin Main-beam amp input pin Sub-beam amp input pin Sub-beam amp input pin Monitor photo diode amp input pin...
  • Page 42 KD-SC900R 3 7 63 1515 0 4.15 TC94A14FA (IC541) : DSP & DAC • Terminal layout & block daiagram Clock generator 1-bit Servo control Digital equalizer Address automatic circuit adjustment circuit Data CLV servo slicer 16 k Synchronous guarantee...
  • Page 43 KD-SC900R 3 7 63 1515 0 Symbol I/O Descroption TMAX O TMAX detection result output pin. TMAX Detection Result TMAX Output Longer than fixed period "PV " Within fixed period "HiZ" Shorter than fixed period "AV " LPFN I Inverted input pin for PLL LPF amp.
  • Page 44 KD-SC900R 3 7 63 1515 0 4.16 TC94A20F-011 (IC401) : CD-ROM decoder + MP3 decoder with DAC and SRAM • Pin layout • Block diagram Switch L 13942296513 General u163 Timing inputbport generator 1-44 (No.49829) http://www.xiaoyu163.com...
  • Page 45 KD-SC900R 3 7 63 1515 0 • Pin functions Pin No Symbol Functions /RESET Hard reset input H:normal L:reset MiMD Micon I/F mode select input /MiCS Micon I/F chip select input /MiLP Micon I/F latch palus input MiDio I/O Micon I/F data input/output...
  • Page 46 KD-SC900R 3 7 63 1515 0 4.17 UPD784217AGC195 (IC701) : CPU • Pin Layout • Block Diagram Pin No. Symbol Function CDRESET Not use CDMUTE Not use CD mecha SW2 CD mecha position setting SW Loading motor control output 0...
  • Page 47 KD-SC900R 3 7 63 1515 0 Pin No. Symbol Function EPROMDO I2C data output EPROMCK I2C clock output OPEN DOOR OPEN SW External DAC IC chip select output CCLK External DAC IC control data output CDTI External DAC IC control data output...
  • Page 48 KD-SC900R 3 7 63 1515 0 4.18 TEA6320T-X (IC161) : E.volume • Pin layout OUTLR OUTRR OUTRF OUTLF MUTE Vref CD-CH TAPE TUNER • Block diagram VOLUME 2 MUTE 0 to 55 dB FUNCTION BALANCE ZERO CROSS FENDER REAR...
  • Page 49 KD-SC900R 3 7 63 1515 0 L 13942296513 u163 (No.49829)1-49 http://www.xiaoyu163.com...
  • Page 50 KD-SC900R 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49829) Printed in Japan 200304WPC http://www.xiaoyu163.com...
  • Page 51 KD-SC900R 3 7 63 1515 0 SCHEMATIC DIAGRAMS CD RECEIVER KD-SC900R CD-ROM No.SML200304 Area Suffix E ----------- Continental Europe EX --------------- Central Europe L 13942296513 Contents Block diagram Standard schematic diagrams Printed circuit boards 2-5 to 7 u163 No.49829SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.

  • Page 52: Safety Precaution

    KD-SC900R 3 7 63 1515 0 Safety precaution Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check.
  • Page 53 KD-SC900R 3 7 6 3 1 5 1 5 0 Block diagram OUTLF OUTRF TU.L FM/AM TU.R J321 TUNER LINE OUT SW1,SW2,PSW OUTLR AMVT OUTRR SEEK/STOP FMVT SD/ST FM/AM OSC LM0,LM1 MONO TRO,FOO IC301 SPINDLE+ BUS0,BUS1 IC161 DMO,FMO FM/AM...
  • Page 54 KD-SC900R KD-SC900R 3 7 6 3 1 5 1 5 0 Standard schematic diagrams Main amplifier section RB160M-30-X D243 R248 R244 C243 R243 0.047 180k R245 C241 1/50 R242 R241 IC301 C242 22/16 LA4743K Q241 QAU0292-001 2SD601A/R/-X LEVEL R793...
  • Page 55 KD-SC900R CD servo control section 3 7 6 3 1 5 1 5 0 R504 R502 8.2k R586 6.8k FEED- FEED- R503 4.7k R581 8.2k R585 CD.R 47/10 C582 R584 270P FEED+ FEED+ R506 C501 C581 Q501 8.2k 3300P C580 4.7/25...
  • Page 56 KD-SC900R KD-SC900R 3 7 6 3 1 5 1 5 0 LCD & Key control section EN601 IC602 QSW0863-002 RPM6938-SV4 CN601 NNZ0087-001 REMOCON ACC5V LCD1 ENC1 ENC2 LCDCE LCDDA LCDCL KEY2 KEY1 KEY0 1 3 9 4 2 2 9 6 5 1 3...
  • Page 57 KD-SC900R 3 7 63 1515 0 Printed circuit boards Main board Forward side IC901 J321 C904 Q341 Q321 C903 CN901 L901 C910 C802 J801 D901 R341 R321 C784 C913 C914 C308 C965 C905 R901 C173 C163 Q241 R999 C246...
  • Page 58 KD-SC900R 3 7 63 1515 0 Main board Reverse side CN901 D971 C906 D972 IC901 J321 R971 C911 C326 J801 L901 R972 D901 C308 IC301 C325 Q331 R901 C322 R308 Q351 C319 C242 C243 R241 R245 R994 C318 C881...
  • Page 59 KD-SC900R 3 7 63 1515 0 Front board Forward side D625 D619 D622 S613 IC602 S617 S603 EN601 D620 R615 D607 D606 D623 S605 R605 S607 R604 R603 D621 R601 R606 R602 R649 R607 S602 S616 S614 D613 LCD1...
  • Page 60 KD-SC900R 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.49829SCH) 2003/04 http://www.xiaoyu163.com...

  • Page 61: Parts List

    KD-SC900R 3 7 63 1515 0 PARTS LIST [ KD-SC900R ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix E------------ Continental Europe EX --------------- Central Europe L 13942296513 - Contents - Exploded view of general assembly and parts list (Block No.M1)
  • Page 62 KD-SC900R 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 63 KD-SC900R 3 7 63 1515 0 General assembly Block No. [M][1][M][M]  Symbol No. Part No. Part Name Description Local ------------ CD MECHA GE10043-210A TOP CHASSIS GE30938-003A HEAT SINK GE30393-002A BOTTOM COVER FSMA3005-001 INSULATOR QYSDST2604Z SCREW 2.6mm x 4mm(x3)
  • Page 64 KD-SC900R 3 7 63 1515 0 CD mechanism assembly and parts list Block No. Grease TNG-87 TN-2001-1011 GP-501MK CFD-005Z GP-501A L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 65: Loading Gear

    KD-SC900R 3 7 63 1515 0 CD mechanism Block No. [M][B][M][M]  Symbol No. Part No. Part Name Description Local 30320101T FRAME 30320102T TOP COVER 30320115T DANPER F 30320116T DANPER R 303205505T CHASSIS RIVET 303205503T CHANGE P. RVT A...

  • Page 66: Electrical Parts List

    KD-SC900R 3 7 63 1515 0 Electrical parts list Main board Block No. [0][1][0][0]  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local D707 UDZS6.2B-X Z DIODE D708 UDZS6.2B-X Z DIODE D709 UDZS6.2B-X...
  • Page 67 KD-SC900R 3 7 63 1515 0  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local C169 QEKJ1EM-475Z E CAPACITOR 4.7uF 25V M C507 NCB31EK-473X C CAPACITOR 0.047uF 25V K C170...
  • Page 68 KD-SC900R 3 7 63 1515 0  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local C719 NCB31HK-103X C CAPACITOR 0.01uF 50V K R163 NRSA63J-222X MG RESISTOR 2.2kΩ 1/16W J C771...
  • Page 69 KD-SC900R 3 7 63 1515 0  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local R528 NRSA02J-220X MG RESISTOR 22Ω 1/10W J R744 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R529...

  • Page 70: Front Board

    KD-SC900R 3 7 63 1515 0 Front board  Symbol No. Part No. Part Name Description Local Block No. [0][2][0][0] R652 NRSA63J-222X MG RESISTOR 2.2kΩ 1/16W J  Symbol No. Part No. Part Name Description Local R653 NRSA63J-103X MG RESISTOR 10kΩ...
  • Page 71 KD-SC900R 3 7 63 1515 0 <MEMO> L 13942296513 u163 3-11 http://www.xiaoyu163.com...
  • Page 72 KD-SC900R 3 7 63 1515 0 Packing materials and accessories parts list Block No. A6A7 L 13942296513 KIT: A15 A16 u163 3-12 http://www.xiaoyu163.com...
  • Page 73 KD-SC900R 3 7 63 1515 0 Packing and accessories Block No. [M][3][M][M]  Symbol No. Part No.A Part Name Description Local GET0145-001A INST BOOK ENG,GER,FRE,DUT GET0145-002A INST BOOK RUS,SPA,ITA,POL SC900RE GET0145-003A INST BOOK DAN,FIN,SWE,GRE SC900REX GET0145-004A INSTALL MANUAL ENG,GER,FRE,DUT...

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