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JVC MX-KB22 Service Manual

Compact component system
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SERVICE MANUAL
COMPACT COMPONENT SYSTEM
8
2004
MB306
MX-KB22, MX-KB1
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
SP-MXKB22
CA-MXKB22
SP-MXKB1
CA-MXKB1

TABLE OF CONTENTS

COPYRIGHT © 2004 Victor Company of Japan, Limited
SP-MXKB22
SP-MXKB1
MX-KB22
Area suffix
EV ------------- Eastern Europe
MX-KB1
Area suffix
B ------------------------------ U.K.
E ---------- Continental Europe
EN ----------- Northern Europe
EV ------------- Eastern Europe
No.MB306
2004/8

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Summary of Contents for JVC MX-KB22

  • Page 1: Table Of Contents

    SERVICE MANUAL COMPACT COMPONENT SYSTEM MB306 2004 MX-KB22, MX-KB1 SP-MXKB22 CA-MXKB22 SP-MXKB22 SP-MXKB1 CA-MXKB1 SP-MXKB1 MX-KB22 MX-KB1 Area suffix Area suffix EV ------------- Eastern Europe B ------------------------------ U.K. E ---------- Continental Europe EN ----------- Northern Europe EV ------------- Eastern Europe TABLE OF CONTENTS PRECAUTION.
  • Page 2 SPECIFICATION 30 W per channel, min. RMS, driven into 6 Ω at 1kHz, with no more than Amplifier Output Power 10% total harmonic distortion (IEC268-3) 28 W per channel, min. RMS, driven into 6 Ω at 1kHz, with no more than 0.9 % total harmonic distor- tion (DIN) Input Sensitivity/Impedance (1 kHz) AUX IN:500 mV/51 kΩ...
  • Page 3: Precaution

    SECTION 1 PRECAUTION Safety Precautions (1) This design of this product contains special hardware and voltmeter. many circuits and components specially for safety purpos- Move the resistor connection to each exposed metal es. For continued protection, no changes should be made part, particularly any exposed metal part having a return to the original design unless authorized in writing by the path to the chassis, and measure the AC voltage across...
  • Page 4 1.5 Safety Precautions (U.K only) (1) This design of this product contains special hardware and many circuits and components specially for safety purposes. For con- tinued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replace- ment parts must be identical to those used in the original circuits.
  • Page 5 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. 1.6.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.
  • Page 6 Important for laser products 5.CAUTION : If safety switches malfunction, the laser is able 1.CLASS 1 LASER PRODUCT to function. 2.DANGER : Invisible laser radiation when open and inter 6.CAUTION : Use of controls, adjustments or performance of lock failed or defeated. Avoid direct exposure to beam. procedures other than those specified here in may result in 3.CAUTION : There are no serviceable parts inside the hazardous radiation exposure.
  • Page 7: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MB306)1-7...
  • Page 8: Disassembly

    SECTION 3 DISASSEMBLY Main body 3.1.1 Removing the top cover / side cover (R) and (L) (See Fig.1 to 6) (1) From the back of the body, remove the two screws A at- Top cover taching the top cover. (2) From both sides of the body, remove the four screws B at- taching the top cover and the side cover (R) and (L).
  • Page 9 Front panel assembly Side cover (L) Side cover (R) Side cover (L) Fig.5 Fig.3 Front panel assembly Side cover (R) Joint Fig.6 Fig.4 (No.MB306)1-9...
  • Page 10 3.1.2 Removing the CD fitting (See Fig.7 to 9) • Prior to performing the following procedure, remove the top cover / side cover (R) and (L). CD tray Caution: For preventing from damage, make sure to remove the CD fit- ting before detaching the CD changer mechanism unit.
  • Page 11 3.1.4 Removing the CD changer mechanism unit (See Fig.11 to 16) • Prior to performing the following procedure, remove the top CD changer mechanism unit Rear panel cover / side cover (R) and (L), and the CD fitting. (1) Disconnect the wire from connector CN601 on the turner board on the right side of the body.
  • Page 12 CD changer mechanism unit AUX board CN504 Main board CN207 CN103 CN101 CN100 Fig.15 Rear panel Front panel assembly Fig.13 CD changer mechanism unit CN801 Fig.16 CN802 Power board CN803 Fig.14 1-12 (No.MB306)
  • Page 13 3.1.5 Removing the tuner board (See Fig.17, 18) • Prior to performing the following procedure, remove the top cover / side cover (R) and (L). (1) Disconnect the wire from connector CN601 on the tuner board. (2) From the back of the body, remove the two screws H, the two screws J and the two screws K attaching the tuner board respectively.
  • Page 14 3.1.6 Removing the speaker terminal board (See Fig.19, 20) • Prior to performing the following procedure, remove the top cover / side cover (R) and (L). (1) Disconnect the wire from connector CN901 on the speaker terminal board. (2) From the back of the body, remove the two screws M at- taching the speaker terminal board.
  • Page 15 3.1.7 Removing the front panel assembly (See Fig.21 to 24) • Prior to performing the following procedure, remove the top Rear panel cover / side cover (R) and (L), the CD fitting / CD changer mechanism unit. (1) Disconnect the wire from connector CN861 on the power board.
  • Page 16 Front panel assembly Fig.23 Front panel assembly Fig.24 1-16 (No.MB306)
  • Page 17 3.1.8 Removing the POWER switch board / CD switch board (See Fig.25, 26) • Prior to performing the following procedure, remove the front Bracket panel assembly. (1) Remove the two screws P and the three screws Q attach- ing the bracket. (2) Remove the screws R attaching the POWER switch board.
  • Page 18 3.1.10 Removing the LCD board / STANDBY board (See Fig.28, 29) • Prior to performing the following procedure, remove the front Front panel assembly panel assembly. (1) Remove the four screws A’ attaching the LCD board and CN505 disconnect the wire from connector CN505. (2) Remove the two screws B’...
  • Page 19 3.1.11 Removing the system board / headphone board / AUX board (See Fig.30 to 34) • Prior to performing the following procedure, remove the front Front panel assembly panel assembly. (1) Pull out the volume knob on the front side of the front panel assembly.
  • Page 20 Front panel assembly Cassette mechanism assembly Front panel assembly Fig.34 Fitting plate Headphone board Fig.32 Front panel assembly Fitting plate AUX board Fig.33 1-20 (No.MB306)
  • Page 21 3.1.12 Removing the cassette mechanism assembly (See Fig.35) • Prior to performing the following procedure, remove the front Rear cover panel assembly. (1) Remove the six screws G’ attaching the cassette mecha- nism assembly. Rear panel Fig.35 (No.MB306)1-21...
  • Page 22 3.1.13 Removing the rear cover / rear panel (See Fig.36 to 38) • Prior to performing the following procedure, remove the top Rear panel cover / side cover (R) and (L), the CD fitting / CD changer mechanism unit. (1) From the back of the body, remove the four screws H’ at- taching the rear cover.
  • Page 23 3.1.14 Removing the heat sink / power board (See Fig.39 to 42) • Prior to performing the following procedure, remove the top cover / side cover (R) and (L), the CD fitting / CD changer Heat sink mechanism unit, the rear cover / rear panel. (1) From the inner side of the rear panel, remove the four screws K’...
  • Page 24 3.1.15 Removing the power transformer assembly (See Fig.43) • Prior to performing the following procedure, remove the top Power transformer cover / side cover (R) and (L), the CD fitting / CD changer mechanism unit and the rear cover / rear panel. (1) Move the cord stopper in the direction of the arrow and dis- connect the power cord.
  • Page 25 3.1.16 Removing the main board (See Fig.44 to 46) • Prior to performing the following procedure, remove the top cover / side cover (R) and (L), the CD fitting / CD changer Main board mechanism unit. Caution: Before disconnecting the card wire from the CD pickup board CD changer and connector CN401...
  • Page 26 Speaker 3.2.1 Removing the front cabinet (See Fig.1 to 3) Caution: Boss When performing the following procedure, apply the cloth to Boss the product for preventing it from damage. (1) Put the screwdriver into the two notch a at the bottom of the speaker, and remove the front panel assembly while pull- ing out the six bosses on the inner side of the front panel assembly forward.
  • Page 27 3.2.2 Removing the main speaker / sub speaker (See Fig.4) • Prior to performing the following procedure, remove the front cabinet. (1) Remove the four screws A attaching the main speaker. (2) Remove the two screws B attaching the sub speaker. Sub speaker Main speaker Fig.4...
  • Page 28: Adjustment

    SECTION 4 ADJUSTMENT Measurement Instruments Required for Adjustment (1) AM signal generator (2) FM signal generator (3) Intermadiate frequency sweep generator (4) FM stereo signal generator (5) Low-frequency oscillator (oscillation frequency 50Hz-20kHz, 0dB output with 600 Ω impedance) (6) Attenuator (600 Ω impedance) (7) Electrinic voltmeter (8) Distortion meter (9) Wow &...
  • Page 29 Cassette amp section Item Measuring condition Check and adjustment procedure Standard value Adjusting part Head azimuth Test tape : VT703L 1. Playback the test tape VT703L. Output level : Head azimuth adjustment Signal output terminal : 2. Adjust the head azimuth adjusting screw so Within (2 dB of adjusting screw SPK out...
  • Page 30 Tuner section (E/EN version) Item Measuring condition Check and adjustment procedure Standard value Adjusting part IFT603 AM IF adjustment Signal input : 1. Set the intermediate frequency sweep Loop antenna generator to AM 450 kHz. Signal output : 2. Adjust IFT603 for maximum and center IC602 pin 18 output AM tracking...
  • Page 31 Tuner section (B/EV version) AM ANT IFT606 L605 VC606 AM RF FM ANT AM RF L604 FM OSC IFT601 VC604 AM IF IFT605 CF604 AM OSC IH602 Tuner section (E/EN version) FM ANT AM ANT IFT604 AM RF FM VT VC601 AM RF IFT603...
  • Page 32 Flow of functional operation until TOC read Slider turns REST Confirm that the voltage at the pin5 of CN402 Power ON SW ON. is 'H' 'L' 'H'. Check that the voltage at the pin7(CD) of CN401 Laser ON is 1.8V. Caution.
  • Page 33: Troubleshooting

    SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. (No.MB306)1-33...
  • Page 34 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MB306) Printed in Japan...
  • Page 35 SCHEMATIC DIAGRAMS COMPACT COMPONENT SYSTEM MX-KB22,MX-KB1 CD-ROM No.SML200408 SP-MXKB22 CA-MXKB22 SP-MXKB22 SP-MXKB1 CA-MXKB1 SP-MXKB1 MX-KB22 MX-KB1 Area suffix Area suffix EV ------------- Eastern Europe B ------------------------------ U.K. E ---------- Continental Europe EN ----------- Northern Europe EV ------------- Eastern Europe Contents...
  • Page 36 In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety.
  • Page 37 HEADPHONE BOARD POWER BOARD CN902 P/N:11-01002-05 Wiring diagram P/N:11-01002-01 P/N:20-41051-37 AC CORD 5P UL2651#28 L=500 mm (AC 230V 50 Hz E/B/EN/EV Version) REMARK: CN802 AC Cord (E/EN/EV Version) CN801 P/N.: 30-00300-01L CN804 TRANSFORMER AC Cord (B Version) P/N:20-42110-00 P/N.: 30-00300-02L P/N:15-01002-02 AUX INPUT 11PIN P=2.5 L=250 mm...
  • Page 38 Block diagrams for MX-KB22 PICKUP FILAMENT TO 3CD DECK KEY BOARD SECTION AC3.3V CD 2 CN204 R241 10K S501 STANDBY LED U203 TA7291S BRIDGE DRIVER U402 TA2153 R242 10K U500 SC6311 RF AMPLIFIER CATH VFD CONTROL / DRIVER EMIT KEY SCAN...
  • Page 39 Block diagram for MX-KB1 PICKUP FILAMENT TO 3CD DECK KEY BOARD SECTION AC3.3V CD 2 CN204 R241 10K S501 STANDBY LED U203 TA7291S BRIDGE DRIVER M+ R242 10K U402 TA2153 U500 SC6311 RF AMPLIFIER CATH VFD CONTROL / DRIVER EMIT KEY SCAN EMIT SC6122...
  • Page 40 Standard schematic diagrams Main section (MX-KB22) BOOT VREF 3835-AIN KEY1 KEY2 KEY3 POW-D STEREO RDS-DAT U300 87EP26F-4K76 DUCK3 DUCK2 PLL-DAT DUCK1 BUCK0 PLL-CLK PLL-PER DUCK U101 TA8189N...
  • Page 41 Main section (MX-KB1) U203 TA7291S TO 3CD DECK BOOT VREF 3835-AIN KEY1 KEY2 KEY3 POW-D STEREO RDS-DAT U300 87EP26F-4K76 DUCK3 DUCK2 PLL-DAT DUCK1 PLL-CLK BUCK0 PLL-PER DUCK 3CD DRIVER SECTION U101 TA8189N TO MCU CN103 LOGIC DECK-TP SECTION 2...
  • Page 42 CD section (MX-KB22) TO MCU TO CD DECK TO PICK UP U401 TC9462F...
  • Page 43 CD section (MX-KB1) TO MCU TO MCU U401 TC9462F...
  • Page 44 MP3 section (MX-KB22) RESET MIMD AD15 AD16 AD14 VDDT AD13 U404 TC94A02F TO MCU SDIO BCKIA LRCKIA VDDT AD10...
  • Page 45 Power section (MX-KB22) METAL FILM RESISTORS NONFLAME FUSIBLE AC PLUG STK402-050 PROTECT CIRCUIT...
  • Page 46 Power section (MX-KB1) METAL FILM RESISTORS NONFLAME FUSIBLE AC PLUG STK402-050 PROTECT CIRCUIT 2-10...
  • Page 47 Tuner section (MX-KB22) RGND FM-RF AM-IF FM-IF QUAD R/OUT L/OUT IC602 TA2149BN FM-RF/O RF-VCC AM-RF FM-OSC AM-OSC DSC-OUT IF-REQ DET-OUT MPX-IN LPF1 LPF2 TU_R AGND TU_L +12V +5.6V DGND CD_EN PLL_DAT PLL_CLK PLL_PER NOTES: ALL OF THE VOLUME OF THE COMPONENT VOLTAGE TESTED AT THE FM MODE.
  • Page 48 Tuner section (only MX-KB1 E/EN) AM LOOP /FM S.SENS AM OSC OUT FOR FM TUNER MODEL OSC OUTGND IF OUT NOTES: ALL OF THE VOLUME OF THE COMPONENT VOLTAGE TESTED AT THE FM MODE. NO SIGNAL INPUT STATUS 2-12...
  • Page 49 Tuner section (only MX-KB1 B/EV) RGND FM-RF AM-IF FM-IF QUAD R/OUT L/OUT IC602 TA2149BN FM-RF/O RF-VCC AM-RF FM-OSC AM-OSC DSC-OUT IF-REQ DET-OUT MPX-IN LPF1 LPF2 TU_R AGND TU_L +12V +5.6V DGND CD_EN PLL_DATA PLL_CLK PLL_PER NOTES: ALL OF THE VOLUME OF THE COMPONENT VOLTAGE TESTED AT THE FM MODE.
  • Page 50 Display & Key section (MX-KB22) 00:08 ENCODER VOLUME RIGHT KEY BOARD TOP RIGHT KEY BOARD MAIN KEY BOARD TOP LEFT KEY BOARD LEFT KEY BOARD DISPLAY BOARD FROM MAIN BOARD 2-14...
  • Page 51 Display & key section (for MX-KB1) 00:08 ENCODER VOLUME RIGHT KEY BOARD TOP RIGHT KEY BOARD MAIN KEY BOARD TOP LEFT KEY BOARD LEFT KEY BOARD DISPLAY BOARD FROM MAIN PCB 2-15...
  • Page 52 Printed circuit boards Main board (forward side) (reverse side) 2-16...
  • Page 53 Display board (forward side) Power board (forward side) (reverse side) (reverse side) 2-17...
  • Page 54 Tuner board for E/EN version Tuner board for B/EV version (forward side) (forward side) (reverse side) (reverse side) 2-18...
  • Page 55 Headphone board (forward side) (reverse side) Speaker jack board 2-19...
  • Page 56 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.MB306SCH)
  • Page 57 PARTS LIST [ MX-KB22 ] [ MX-KB1] * All printed circuit boards and its assemblies are not available as service parts. MX-KB22 Area suffix EV -------------- Eastern Europe MX-KB1 Area suffix B ------------------------------- U.K. E ----------- Continental Europe EN ------------ Northern Europe...
  • Page 58 Exploded view of general assembly and parts list Block No. Main board Main K 18 28...
  • Page 59 E EN Ver. 57 57 Display board Key board F804 F803 F801 F802 Power board Tuner board...
  • Page 60 OW53-01001-12 CD PLAY KNOB OW53-01001-13 TAPE A KNOB OW53-01001-14 TAPE B KNOB OW55-00005-80 LATCH (x2) OW55-00005-81 LATCH HOLDER (x2) OW55-01001-00 JVC BADGE OW60-01001-00 FRONT PANEL OW60-01001-05 FRONT PANEL KB22 OW60-01001-01 TOP CABINET OW60-01001-04 TOP CABINET KB22 OW61-01001-00 HEAT SINK COVER...
  • Page 61  Symbol No. Part No. Part Name Description Local OW39-01001-12 BACK PLATE KB22 OW40-84006-53 SCREW (x4) OW40-92008-01 SCREW (x3) OW40-92608-11 SCREW (x13) E,EN OW40-92608-11 SCREW (x12) B,EV OW40-92610-01 SCREW (x6) OW40-92612-01 SCREW (x19) OW40-92615-01 SCREW (x6) OW40-92616-01 SCREW (x2) OW40-93006-51 SCREW (x6) OW40-93008-11...
  • Page 62 Electrical parts list Main board  Symbol No. Part No. Part Name Description Local Block No. [0][1] OW05-77102-10 C CAPACITOR Axial 1000pF  Symbol No. Part No. Part Name Description Local C100 OW05-73561-00 C CAPACITOR 560pF C101 OW05-73561-00 C CAPACITOR 560pF C102 OW05-73221-00...
  • Page 63  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C412 OW05-73104-06F C CAPACITOR 0.1uF R123 OW07-75201-06 C RESISTOR 200 ohm 1/16W C413 OW05-73473-00 C CAPACITOR 0.047uF R124 OW07-75513-06 C RESISTOR 51 Kohm 1/16W C414 OW05-73153-00 C CAPACITOR...
  • Page 64  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R242 OW07-75103-06F C RESISTOR 10 Kohm 1/16W R347 OW07-75103-06F C RESISTOR 10 Kohm 1/16W R243 OW07-75221-06F C RESISTOR 220 ohm 1/16W R348 OW07-75103-06F C RESISTOR 10 Kohm 1/16W...
  • Page 65  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R474 OW07-75103-06F C RESISTOR 10 Kohm 1/16W KB22 EC102 OW06-70227-20 E CAPACITOR 220uF 10V R475 OW07-75103-06F C RESISTOR 10 Kohm 1/16W KB22 EC103 OW06-75475-20 E CAPACITOR...
  • Page 66  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local EC438 OW06-71476-20 E CAPACITOR 47uF 16V KB22 XXXXX OW25-61260-80 CABLE EC439 OW06-71476-20 E CAPACITOR 47uF 16V KB22 EC440 OW06-71476-20 E CAPACITOR 47uF 16V KB22 EC441 OW06-71476-20...
  • Page 67  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C861 OW05-73474-00 C CAPACITOR 0.47uF OW37-00002-80 EYELET F 2 X 4 mm C862 OW05-73105-06F C CAPACITOR AC-L OW37-00002-80 EYELET F 2 X 4 mm C863 OW05-73105-06F C CAPACITOR...
  • Page 68  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R503 OW07-75681-06F C RESISTOR 680 ohm 1/16W XXXXX OW05-70104-10 C CAPACITOR 0.1uF R504 OW07-75273-06F C RESISTOR 27 Kohm 1/16W XXXXX OW08-04344-89T FERRITE CORE For CN500 R505 OW07-75471-06F...
  • Page 69  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C641 OW05-73102-00 C CAPACITOR 1000pF CE602 OW06-75475-20 E CAPACITOR 4.7uF 50V C642 OW05-73332-00 C CAPACITOR 3300pF CE603 OW06-72477-20 E CAPACITOR 470uF 25V C644 OW05-73180-05 C CAPACITOR...
  • Page 70  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C626 OW05-73682-00 C CAPACITOR 6800pF R669 OW07-75102-50 C RESISTOR 1 Kohm 1/8W C627 OW05-73472-00 C CAPACITOR 4700pF R670 OW07-75102-50 C RESISTOR 1 Kohm 1/8W C628 OW05-73473-00 C CAPACITOR...
  • Page 71 <MEMO> 3-15...
  • Page 72 Packing materials and accessories parts list Block No. B E EN Ver. A1 A2 A7 A8 3-16...
  • Page 73 Packing and Accessories (B E EN ver.) Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local  OW88-01002-04 INST BOOK LVT1251-003A ENG OW88-01002-00 INST BOOK LVT1251-004A GER FRE DUT OW88-01002-06 INST BOOK LVT1251-005A GER FRE SPA ITA SWE FIN DAN EN OW88-01001-19 WARRANTY CARD BT-54023-1...
  • Page 74 Packing materials and accessories parts list Block No. EV Ver. A1 A2 3-18...
  • Page 75 Packing and Accessories (EV ver.) Block No. [M][4][M][M] Symbol No. Part No. Part Name Description Local  OW88-01002-07 INST BOOK LVT1251-006A CZE POL HUN RUS OW88-01001-18 WARRANTY CARD BT-54023-1 OW88-01002-12 WARRANTY CARD BT-54023-1 KB22 OWRM-SMXKB1A REMOTE UNIT OWRM-SMXKB2A REMOTE UNIT KB22 OW23-04910-81 AM ANT LOOP...

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