Jvc-KDSH-9101-Service-Manual(1) 电路图 维修手册.pdf

SERVICE MANUAL COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. No.49841 2003/5 CD RECEIVER 4984120035 KD-SH9101 TABLE OF CONTENTS 1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 3 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1- 29 4 Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1- 35 Detachable ANGLE RM-RK100 CD FM AM CH AUXSEL VOLUME R D ATT DAB DISC PRESETPRESET DISC EQ KD-SH9101 MOSFET 3456M21 DSRC DISP ATT SEL T/P MODE E - ContinentalEurope EX - Central Europe Area Suffix RadioFans.CN 收音机爱 好者资料库 1-2 (No.49841) SPECIFICATION Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power Output Front50 W per channel Rear50 W per channel Continuous Power Output (RMS) Front 19 W per channel into 4, 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Rear 19 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 RangeFrequencies: 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.4 kHz, 6 kHz, 12 kHz Level10 dB Frequency Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB Line-In Level/ImpedanceLINE IN1.5 V/20 k load Line-Out Level/Impedance4.0 V/20 k load (full scale) Output Impedance1 k TUNER SECTION Frequency Range FM87.5 MHz to 108.0 MHz AM (MW) 522 kHz to 1 620 kHz (LW) 144 kHz to 279 kHz FM Tuner Usable Sensitivity11.3 dBf (1.0V/75) 50 dB Quieting Sensitivity16.3 dBf (1.8V/75) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation30 dB Capture Ratio1.5 dB MW Tuner Sensitivity20 V Selectivity35 dB LW TunerSensitivity50 V CD PLAYER SECTION TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of channels2 channels (stereo) Frequency Response5 Hz to 20 000 Hz Dynamic Range98 dB Signal-to-Noise Ratio102 dB Wow and FlutterLess than measurable limit MP3 (MPEG Audio Layer 3) Max. Bit rate 320 Kbps WMA (Windows Media(R) Audio) Max. Bit rate 192 Kbps GENERAL Power RequirementOperating Voltage: DC 14.4 V(11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature 0C to +40C Dimensions (W x H x D)Installation Size:182 mm x 52 mm x 161 mm Panel Size188 mm x 58 mm x 17 mm Mass1.8 kg (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.49841)1-3 SECTION 1 Precautions 1.1Safety 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. ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. RadioFans.CN 收音机爱 好者资料库 1-4 (No.49841) 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. (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 testers internal power source can easily destroy the laser diode. 1.3Handling the traverse unit (optical pickup) (1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. (2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector. (3) Handle the flexible cable carefully as it may break when subjected to strong force. (4) It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. 1.4Attention when traverse unit is decomposed *Please refer to Disassembly method in the text for the CD pickup unit. Apply solder to the short land before the flexible wire is disconnected from the connector on the CD pickup unit. (If the flexible wire is disconnected without applying solder, the CDpickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land after connecting the flexible wire. 1M (caption) Anti-static wrist strap Conductive material (conductive sheet) or iron plate Pickup Short-circuit point (Soldering) Flexible wire PickupShort-circuit point (No.49841)1-5 SECTION 2 Disassembly method 2.1 Main body section 2.1.1Removing the front panel assembly (See Fig.1) (1) Push the detach button in the lower right part of the front panel assembly. (2) Remove the front panel assembly in the direction of the ar- row. Fig.1 Front panel assembly Detach button 1-6 (No.49841) 2.1.2Removing the top chassis (See Figs.2 to 6) Turn on power. (1) Push the eject button in the upper right part of the front pan- el assembly to move the front panel assembly as shown in Fig.2 and turn off power. (2) Remove the two screws A attaching the top chassis from the top side of the main body. (See Fig.3.) (3) Remove the three screws B attaching the top chassis from the both sides of the main body. (See Figs.4 and 5.) (4) Remove the screw C and three screws D attaching the heat sink from the left side of the main body. (See Fig.5.) (5) Remove the two screws E and screw F attaching the top chassis from the back side of the main body. (See Fig.6.) (6) Move the top chassis upward and remove it with the CD mechanism assembly. The connector CN501 on the CD mechanism assembly is disconnected from the connector CN981 on the main board. Fig.2 Fig.3 Fig.4 Fig.5 Fig.6 Front panel assembly Top chassis Eject button Front panel assembly Top chassis AA Top chassis BB Top chassis Heat sink BD C EF (No.49841)1-7 2.1.3Removing the mecha control board (See Fig.7) Prior to performing the following procedures, remove the top chassis. (1) Disconnect the card wire from the connector CN601 on the mecha control board. (2) Remove the five screws G attaching the mecha control board. (3) Release the joints a and b, remove the mecha control board. Fig.7 2.1.4Removing the CD mechanism assembly (See Fig.8) Prior to performing the following procedure, remove the top chassis. (1) Remove the three screws H from the inside of the top chas- sis and remove the CD mechanism assembly. Fig.8 CN601 b a G G Mecha control board H HH CD mechanism assembly Top chassis 1-8 (No.49841) 2.1.5Removing the motor assembly (See Figs.9 to 11) Prior to performing the following procedures, remove the top chassis. (1) Remove the spring from the motor bracket. (See Fig.9.) (2) Disconnect the wire from the connector CN982 on the main board. (See Fig.10.) (3) Remove the two screws J attaching the motor bracket. (See Fig.10.) (4) Remove the washer attaching the clutch assembly and pull out the clutch assembly from the shaft. (See Fig.11.) (5) Remove the two screws K attaching the motor assembly to the motor bracket. (See Fig.11.) Fig.9 Fig.10 Fig.11 Spring Motor braket CN982 Motor braket Main board J K Motor braket Motor assembly Clutch assembly Washer (No.49841)1-9 2.1.6Removing the main board (See Figs.12 to 16) Prior to performing the following procedures, remove the top chassis and motor assembly. (1) Disconnect the flexible wires from the connectors CN703 and CN991 on the main board respectively. (See Fig.12.) (2) Move the front bracket backward until it stops. (3) Remove the four screws L attaching the arm brackets (L) and (R). Move the arm brackets (L) and (R) from the rod gear. (See Fig.12.) (4) Remove the rod gear. (5) Remove the screw M attaching the rear panel to the bottom cover from the back side of the main body. (See Fig.14.) (6) Remove the three screws N attaching the main board and move the main board backwards to release the two joints c. (The main board will be removed with the rear panel and rear heat sink) (See Figs.12 and 15.) (7) Remove the screw P and Q attaching the rear heat sink. (See Fig.16.) (8) Remove the three screws R and screw S attaching the rear panel, then remove the main board. (See Fig.16.) Fig.12 Fig.13 Fig.14 Fig.15 Fig.16 L L M NN Main board CN991 Rod gear CN703 Arm brackets (L) Arm brackets (R) Rod gear Main board Arm brackets (L) Arm brackets (R) M Rear panelBottom cover Joint c Joint c Main board Q PR S Rear panelRear heat sink 1-10 (No.49841) 2.1.7Removing the lifter switch board (See Fig.17) Prior to performing the following procedure, remove the top chassis, motor assembly and main board. (1) Remove the two screws T attaching the lifter switch board to the bottom chassis. Fig.17 T Bottom chassis Lifter switch board (No.49841)1-11 2.1.8Removing the lifter board (See Figs.18 to 24) Prior to performing the following procedures, remove the top chassis and front panel assembly. Remove the four screws U attaching the front bracket on the both sides of the main body. (See Figs.19 and 20.) Push the pin of the joint d on the front side of the front bracket to release the detach lever. (See Fig.21.) Remove the screw V attaching the connector cover in the rear side of the front bracket. (See Fig.22.) Release the two joints f while pushing them from the front side, and then move the connector cover in the direction of the arrow and release the eight joints e. (See Figs.22 and 23.) Remove the two screws W attaching the lifter board from the front side of the main body. (See Fig.24.) (1) Disconnect the flexible wire from the connector CN991 on the main board. (See Fig.18.) Fig.18 Fig.19 Fig.20 Fig.21 Fig.22 CN991Front bracket Main board U Front bracket U Front bracket Datch lever Joint d Front bracket Joint e Joint e Joint e Joint e Front bracket Connector cover Joints e Joint f Joint f V 1-12 (No.49841) Fig.23 Fig.24 Lifter board Connector cover W (No.49841)1-13 2.1.9Removing the front board (See Figs.25 to 28) Prior to performing the following procedures, remove the front panel assembly. (1) Remove the six screws X attaching the rear panel to the front panel assembly. (See Fig.25.) (2) Pull out the volume knob from the front side of the front panel assembly. (See Fig.26.) (3) Release the ten joints g of the front panel and the rear pan- el. (See Fig.27.) (4) Take out the front board from the front panel assembly. (See Fig.28.) Fig.25 Fig.26 Fig.27 Fig.28 XX XX Rear panel Front panel assembly Volume knob Joints g Joints g Joints g Rear panel Joints g Front board 1-14 (No.49841) 2.2 CD Mechanism section 2.2.1Removing the top cover (See Figs.1 and 2) (1) Remove the four 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. Fig.1 Fig.2 A A A Joints aTop cover Joints a Top cover (No.49841)1-15 2.2.2Removing the connector board (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. (1) Remove the screw B fixing the connector board. (2) Solder the short-circuit point on the pickup. (3) Disconnect the flexible wire from the pickup. (4) Move the connector board in the direction of the arrow to release the two joints b. (5) Unsolder the wires on the connector board if necessary. CAUTION: Unsolder the short-circuit point after reassembling. Fig.3 Fig.4 Fig.5 B Connector board PickupShort-circuit point Joints b Wires Pickup Short-circuit point (Soldering) Flexible wire B Flexible wire Connector board Frame 1-16 (No.49841) 2.2.3Removing 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. Fig.6 Fig.7 Connector board DET switch Pickup DET switch Tab c Tab c DET switch wire Feed sw. holder (No.49841)1-17 2.2.4Removing the chassis unit (See Figs.8 and 9) Prior to performing the following procedure, remove the top cover and connector board. (1) Remove the two suspension springs (L) and (R) attaching the chassis unit to the frame. CAUTION: The shape of the suspension spring (L) and (R) are dif- ferent. Handle them with care. When reassembling, make sure that the three shafts on the underside of the chassis unit are inserted to the dampers certainly. Fig.8 Fig.9 Suspension spring (L) Suspension spring (L) Suspension spring (R) Suspension spring (R) Chassis unit Frame Chassis unit Frame Shafts Shaft Damper Damper Damper 1-18 (No.49841) 2.2.5Removing the clamper assembly (See Figs.10 and 11) Prior to performing the following procedure, remove the top cover. (1) Remove the clamper arm spring. (2) Move the clamper assembly in the direction of the arrow to release the two joints d. Fig.10 Fig.11 Clamper arm spring Chassis rivet assembly Joint d Joint d Clamper assembly Clamper arm spring Clamper assembly Joint d Joint d Chassis rivet assembly (No.49841)1-19 2.2.6Removing 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 as- sembly in the direction of the arrow to remove it from the chassis rivet assembly. (2) Disconnect the wire from the loading / feed motor assembly if necessary. CAUTION: When reassembling, connect the wire from the loading / feed motor assembly to the flame as shown in Fig.12. Fig.12 Fig.13 Loading / feed motor assembly Loading / feed motor assembly C 1-20 (No.49841) 2.2.7Removing the 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 the pu. sha