Kenwood-RDHD-7-Service-Manual电路原理图.pdf

MICRO Hi-Fi COMPONENT SYSTEMRD-HD5MD/HD7SERVICE MANUAL(HD-5MD/HD-7)© 2002-11 PRINTED IN KOREAB51-5835-00 (K/K) 3430Door(MD)(A52-0989-08)In compliance with Federal Regulations, following are repro-duction of labels on, or inside the product relating to laserproduct safety.KENWOOD Corp. certifies this equipment conforms to DHHSRegulations No.21 CFR 1040. 10, Chapter 1, subchapter J.DANGER : Laser radiation when open and interlock defeated.AVOID DIRECT EXPOSURE TO BEAM.Caution : No connection of ground line if disassemble the unit. Please connect the ground line on rear panel, PCBs, Chassis and some others.Button(K29-8274-08)Knob(VOLUME)(K29-8275-08)Jack,D3.5(E11-0969-08)Window *(B10-3934-08)Panel *(A60-)Ter,RCA(E63-0187-08)Module(W02-2802-05)Module(W02-2803-05)Ter,RCA(E63-1181-08)Cabinet *(A01-)Tuner *(W02-)SW, Push block(E21-0041-08)SW, Slide *(S62-0098-08)Cord ass'y *(E30-)Stopper(AC cord)(J42-0355-08)* Refer to parts list on page 41.Illust. is RD-HD5MD.70%RD-HD5MD/HD72CONTENTS / ACCESSORIES / CAUTIONSCONTENTS / ACCESSORIES / CAUTIONS. 2EXTERNAL VIEW .3DISASSEMBLY FOR REPAIR / ADJUSTMENT.4CIRCUIT DESCRIPTION .5PC BOARD . 18SCHEMATIC DIAGRAM . 24EXPLODED VIEW .36PARTS LIST.41SPECIFICATIONS .51ContentsFM indoor antenna (1)(T90-0904-08)AM loop antenna (1)(T90-0903-08)Remote control unit (1)(A70-1625-08): RD-HD5MD(T)(A70-1626-08): RD-HD5MD(M), RD-HD7(V)(A70-1629-08): RD-HD7(E,T)(A70-1630-08): RD-HD7(K)Batteries (R6/AA) (2) Accessories1Remove the CD from the unit.2Press the CD 6 key.3Wait for some time and verify that the dis-play appears as above.4Wait a few seconds and turn the unit OFF.Note related to transportation andmovementBefore transporting or moving this unit, carry outthe following operations.Condensation (of dew) may occur inside the unit whenthere is a great difference in temperature between thisunit and the outside.This unit may not function properly if condensation oc-curs. In this case, leave the unit for a few hours andrestart the operation after the condensation has driedup.Be specially cautious against condensation in a follow-ing circumstances:When this unit is carried from one place to anotheracross a large difference in temperature, when the hu-midity in the room where this unit is installed increases,etc.Caution on condensation Memory backup functionStored contents which are cleared immediatelywhen power plug is unplugged from power outlet :Clock displayN.B. functionStored contents which will back-up after powerplug is unplugged from power outlet:State of power (on or standby), A, P, S, Last inputselection, AUX level, Volume control value, Balancecontrol, Receiving band, Frequency, Preset station,Program Timer, TONEOperation to resetThe microcomputer may fall into malfunction (impossibil-ity to operate, erroneous display, etc.) when the powercord is unplugged while unit is ON or due to an externalfactor. In this case, execute the following procedure toreset the microcomputer and return it to normal condi-tion.Unplug the power cord from the power outlet, then whileholding the set key on the main unit depressed, plug the powercord again.÷ Please note that resetting the microcomputer clearsthe contents stored in and it returns to conditionwhen it left the factory.CautionsRD-HD5MD/HD73EXTERNAL VIEW* Refer to parts list on page 41.Illust. is RD-HD7.SYSTEM CONFIGURATIONSYSTEM NAME RECEIVER SPEAKERHD-5MD RD-HD5MD LS-HD7HD-7 RD-HD7 LS-HD7tuningFront panel *(A60-)Knob *(K29-)Phone jack(E11-0969-08)Knob *(K29-8274-08)Window *(B10-)Window(B11-1573-08)RD-HD5MD/HD74DISASSEMBLY FOR REPAIR / ADJUSTMENTHow to open the tray if it does not come out.1. Turn the gear in the direction of the arrow using a bamboo stick and so on in the drawing through the hole on the loading chassisbottom.Note : Do not use a screw driver like a metallic instead of a bamboo stick.(There is a danger of damaging the gear.)2. Pull out the tray frontward by hand when it comes just out.DISASSEMBLY FOR REPAIRNo. ITEMINPUTSETTINGSOUTPUTSETTINGSRECEIVERSETTINGSALIGNMENTPOINTSALIGN FOR FIG.AUDIO SECTION : SELECTOR : EXCEPT TUNER MODEIDLE CURRENT(RD-HD7 only)Connect a DCvoltmeter to CP901 or CP902 CP901 (Lch)CP902 (Rch)Volume:MinimumVR203 (Lch)VR204 (Rch)8 mVADJUSTMENTRD-HD5MD/HD75CIRCUIT DESCRIPTION1. Initializing1-1 Initializing Method While holding down the SET key, plugged in thepower cord to AC power wall outlet.1-2 Initializing Operation During the initial operation, the display shows “INITIAL-IZE “and after that it will be returned to standby condition.2. Test Mode2-1 Setting method of the Test Mode2-2 Cancel of the test mode Initialized and cancel the test mode if pulling out the power cord.Test Mode Keys Setting MethodCD Test Mode CD PLAY PAUSE Insert the AC cord to MD Test Mode MD PLAY PAUSE AC wall outlet while MD Mecha. Test MD REC holding down Mode the left key.OperationKeyCD Test Mode MD Test ModeCD-PLAY/PAUSE(cyclically change the mode Tracking-Servo ON/OFF -05 and 03 by pressing the key.MENU CD double speed CD normal speed -P.CALL UP CD Track number upThe pickup travels outward in the stop mode.MD Track number upP.CALL DOWN CD Track number down The pickup travels inward in the stop mode.MD Track number downSET -Stop the MD operation, and start the ALL-ERASE operation if the disc is recordable.2-3 Operation of the Test ModeKEYS OPERATIONVolume/multi-control Select the mode or changed the adjustment value.MD PLAY/PAUSEFix the mode or adjustment value.Skip to next step.Cancel the selected mode andSTOP changed to menu page.Return to the state previous before.3. MD Test Mode for Adjustment3-1 Contents of the Test Mode3-2 Entering the Test Mode Turn the AC on while pressing the MDREC key.3-3 Canceling the Test Mode Turn the AC off.3-4 Key Operations for Adjustment(1) Setting of Continuous Playback ModeNo. Key Display/Function1 VOLUME Select CREC-PLAY2 Load a recordable disc.3 (MD)6(MD)6CREC (ZZZZ) (CREC address)0300h cluster = recording start pointóCPLAY ?4 CPLAY MIDC = XXXX a = YY (error)C1 error ADIP erroraddress MID = 0300h cluster5 STOP CREC-PLAYó(1) Setting of Continuous Recording ModeNo. Key Display/Function1 VOLUME Select CREC-PLAY2 Load a recordable disc.3 (MD) CREC (ZZZZ) (CREC address)0300h cluster = recording start pointCPLAY ?4 STOP CREC-PLAY64. Electrical adjustment4-1 Precaution during confirmation of Laser DiodeemissionDuring adjustment, do not view the emission of a laserdiode from just above for confirmation. This may dam-age your eyes.3-6 Continuous Playback Mode3-7 Continuous Recording ModeNo. LCD DESCRIPTION SECTION1 TEMP ADJUThe work of adjustment is unnecessary in this mode.4-52 LDPWR ADJU Laser power adjustment. 4-63 LDPWR CHEC Laser power check. 4-64 EFBAL ADJUEF balance adjustment (Traverse adjustment).4-75 TE B. ADJ Automatic EF balance adjustment. 4-86 FBIAS ADJU Focus bias adjustment. 4-97 CREC-PLAY Continuous recording mode. 3-7Continuous playback mode. 3-63-5 Selection of Adjustment Test Mode Whenever the volume/multi-control knob is turned theadjustment test mode is selected.For more information on each adjustment mode, refer toeach section of 4, “Electrical adjustment“.RD-HD5MD/HD76CIRCUIT DESCRIPTION4-2 Precaution on handling of Optical pick-up(KMS-260B)The laser diode in an optical pick-up is easy to be sub-ject to electrostatic destruction. Therefore, solder-bridgethe laser tap on the flexible board when handling theoptical pick-up.4-7 EF Balance(Traverse Adjustment)Connection :TE1VCOscilloscopeX33ADJUSTMENT+-V: 0.5V/div H: 10ms/divINPUT: DC modeWhen removing the flexible board from the connector,make a solder bridge in advance, then remove the board.Be careful not to remove the solder bridge before insert-ing the connector. Moreover, take careful measuresagainst electrostatic destruction. The flexible board is cuteasily. Handle the flexible board with care.4-3 Precaution during adjustment1) Perform the adjustment and confirmation marked with “O”in the order shown in the table when the parts below arereplaced.2) In the test mode, perform the adjustment. After adjust-ment is completed, cancel the test mode.3) Perform the adjustment in the order described.4) Use the following tools and measurement equipment. CD test disc TGYS-1 Laser power meter Oscilloscope (with bandwidth of more than 40 M)(Calibrate the probe before measurement.) Digital voltmeter Thermometer5) Take care that VC and GND (ground) are not connectedon the oscilloscope when two or more signals are moni-tored on the oscilloscope. (VC and GND are short-circuit-ed in this case.)4-4 Creating the recordable continuous recordingdiscThis disc is used for focus bias adjustment and error rateconfirmation. How to create the recordable continuousrecording disc is 3-7.Optical BD boardpick-up IC7 D3 IC1,IC2,IC61.Temperature compen-sation offset adjustment X O O O2.Laser power adjustment O O X O3.Traverse adjustment O O X O4.Focus bias adjustment O O X O5.Error rate confirmation O O X OPick-upFlexible boardLaser tap4-5 Offset AdjustmentNo. Key Display/Function1 Volume/multi-control Select TEMP ADJU2 PLAY TEMP=xx (yy)(xx=compensation data, yy=setting temperature)3 Volume/multi-control Input “yy“ with present temp.4 PLAY TEMP=SATEMP ADJU in writing data4-6 Laser Power Check and AdjustmentLaser power setting in playback and recording modes.Preparation1. Remove the MD mechanism from the unit.2. Connect the digital voltmeter to TP1 and TP2 on X33pcb.3. Remove the top plate from traverse unit.4. Remove the magnetic head.5. Remount the MD mechanism to the unit+-Laserpower meterDigitalvoltmeterObjective lens ofoptical pick upTP2TP1X33ADJUSTMENT1. Laser Power AdjustmentNo. Key Display/Function1 Volume/multi-controlLDPWR ADJULoad recordable disc2 Load the disc and lazer ona 0.9mW) $xx read power(xx=power value)3 EJECTPLAYUnload the disc and laser on4 4/¢ Move the pickup to check the laser power withlaser power meter sensor5 Volume/multi-controlAdjust “xx“ so that the power meter shows 0.9mW.6 PLAY a 7.0mW) $xx writing power 7 Volume/multi-controlAdjust “xx“ so that the power meter shows 7.0mW.This adjustment should be carried out in 15 secs.8 PLAY Laser power offDisplay shows LDPWR ADJU after LDPWR<$xxto save the data in E2PROMStart from No.2 if readjust.2. Laser Power CheckNo. Key Display/Function1 Volume/multi-control LDPWR CHEC2 PLAY c 0.9mW) $xx(xx=0.85 to 0.95mW)3 PLAY c 7.0mW) $xxLaser power meter: 7.0±1.0mWVOM:optical pickup indication value ±10%In this case, lop = 82.5 mAlop(mA) = Reading of digital voltmeter(mV)/1()(optical pick-up label)KMS260B27x40B0825RD-HD5MD/HD77CIRCUIT DESCRIPTION1. Recordable DiscNo. Key Display/Function1 Connect the oscilloscope to TE1 and VC in X33 pcb2 Volume/multi-controlSelect EFBAL ADJU3 Load the recordable disc4 PLAY EFBAL MO-W5 PLAY EF=$MOW6 Volume/multi-controlWrite power adjustment. Adjust the waveform as follows.7 PLAY Display shows EF=$MOR after EFB=xSAVEto save the data in E2PROM. Mode changes write to readFocus and disc servo are on. Tracking servo off.8 Volume/multi-controlRead power adjustment. Adjust the waveform as follows.9 PLAY Save the data in E2PROM.Display shows EFBAL MO-PPLAYDisplay shows EF=$MOP(Pickup travels to search pits and tune the servo to on.)10 Volume/multi-controlAdjust the waveform as follows.11 PLAY Display showsEFB=xSAVEto save the data in E2PROM.Display shows EFBAL CD disc motor stops.12 EJECT Unload disc.2. Pre Master Test Disc(TGYS-1)No. Key Display/Function1 Load the disc(TGYS-1).2 PLAY EF=$CD servo is on 3 Volume/multi-controlAdjust the waveform as follows.4 Save the data in E2PROM. Display showsEFB=xSAVE in brief time.EF PHASE5 EJECT Unload disc.No. Key Display/Function1. CD Error Rate1 Volume/multi-controlCREC-PLAY2 Load the test disc(TGYS-1)3 PLAY Display shows CPLAY MID Access endc=xxxx a=yy xxxx=C1 error (lower 20) yy=AIDP error4 STOP CREC-PLAY5 EJECT Unload disc.2. MO Error RateNo. Key Display/Function1 Volume/multi-controlCREC-PLAY2 Load the recordable disc3 PLAY Display shows CPLAY MID Access endc=xxxx a=yy xxxx=C1 error (lower 50) yy=AIDP error(00)4 STOP CREC-PLAY5 EJECT Unload disc.No. Key Display/Function1 Volume/multi-control Select FBIAS ADJU2 Load the disc.3 PLAY a=xx yyyy/ point a(xx=focus bias, yyyy=C1error)4 Volume/multi-control Adjust “yyyy“ to 2205 PLAY b=xx yyyy/ point b6 Volume/multi-control Adjust “yyyy“ to 2207 PLAY xx yyyy/ point cCheck “yyyy“ within 508 PLAY Display shows aa bb cc(xx) focus bias adjust(aa= point a,bb=b,cc=c )During this adjustment, the oscilloscope changes in units ofabout 2%. Adjust so that the waveform comes nearest to thespecified value. (MO groove read power traverse adjust-ment)(Traverse waveform)Specification : A = BNotes :1. Data is erased during MO write when a recorded disc isused for this adjustment.2. If the traverse waveform is difficult to be monitored, con-nect an oscilloscope as shown in the figure below.* Notes :1. The relation between the C1 error and focus bias valueis shown in the figure below. Points “a” and “b” in thefigure are detected by the above adjustment. Focalposition “C” is automatically obtained from points “a”and “b” by calculation.2. The C1 error rate fluctuates. Therefore, perform theadjustment according to the observed mean value.4-9 Focus Bias AdjustmentUse the special disc(continuous recorded disc)Focus bias valueC1 error(TE1)330k10pF(VC)Oscilloscope+-4-10 Error Rate Check4-8 Automatic EF Balance Adjustment Automatic EF balance adjustment is performed.No. Key Display/Function1 Volume TE B. ADJ 2 Load a recordable disc.=Low Reflection Groove 3 TE B. MO-W (Automatic Adjustment Mode Indication) Writing PowerAutomatic Adjustment4 Display shows EFB = XXX SAVE in brief time and Next stepsave the data in E2PROM.5 TE B. MO-R (Automatic Adjustment Mode Indication) Reading Power=Low Reflection GrooveAutomatic Adjustment6 Display shows EFB = XXX SAVE in brief time and MDNo. Key Display/FunctionNext step7 TE B. MO-P (Automatic Adjustment Mode Indication) Reading Power=Low Reflection PITAutomatic Adjustment8 Display shows EFB = XXX SAVE in brief time and Next stepsave the data in E2PROM.9 EFBAL CHANGE (Unload a disc)0 Load a pre-master test disc(TGYS-1).- MD TE B. CD (Automatic Adjustment Mode Indication) Reading Power=High Reflection PIT= Display shows save the data in E2PROM.EFB = XXX SAVE in brief time and EF PHASE menusave the data in E2PROM.RD-HD5MD/HD78CIRCUIT DESCRIPTIONPin No. Pin Name I/O Pin Description1 PLL DATA O Data output to PLL IC.2 PLL CLK O Clock outp