HarmanKardon-FL8300-cd-sm维修电路原理图.pdf

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1、 harman/kardon Model FL8300 5 Disc Compact Disc Changer SERVICE MANUAL CONTENTS LASER BEAM SAFETY PRECAUTIONS .2 OTHER PRECAUTIONS . 3 LEAKAGE TEST . 4 SPEClFlCATlONS . 5 CONTROL AND FUNCTIONS . 7 BLOCK DIAGRAM .9 PICKUP REPLACEMENT.11 CIRCUIT DESCRlPTlON . 13 BULLETIN #9604. 22 BULLETIN #9607. 23 B

2、ULLETIN #9703.24 TECH TIP TIP# HKTT2003-02. 26 TROUBLESHOOTING . 27 PRINTED ClRCUlT BOARDS . 34 GENERAL UNIT EXPLODED VIEW I, II . .37 GENERAL UNIT PARTS LIST40 ELECTRICAL PARTS LIST . 41 SEMICONDUCTOR IDENTIFICATION. 44 PACKAGE .52 SCHEMATIC DIAGRAM . 53 WIRING DIAGRAM . . 61 harman/kardon, Inc. 25

3、0 Crossways Park Dr. Woodbury, New York 11797 Rev1 3/2003 RadioFans.CN 收音机爱 好者资料库RadioFans.CN 收音机爱 好者资料库6789101112131415161718192021harman/kardon Service BulletinService bulletin # 9604 rev1 - October 1998This is considered a Minor RepairTo: All harman/kardon Service CentersModels: FL8300Subject: Di

4、gital Output LevelThe Digital Interface Standard recommends D/A converters have a minimum Input sensitivity of 200 mV.In early FL8300 production units, the Digital Output level was 240 mV ?10% peak to peak. Based on our research,we found that some D/A converters require more than 240 mV for intermit

5、tent free operation.In the event you receive a FL8300 from a consumer with the a complaint “Intermittent Sound from ExternalD/A converter”, check the serial number in the table below.If the FL8300 has a serial number higher than indicated in the table below, connect a properly working D/A convertert

6、o the Digital Output and verify interruption free operation. Also confirm the Digital Output level of the FL8300 is 500mV ?10% Peak to Peak. If the FL8300 passes these two tests, advise the customer to have their external D/Aconverter and connecting cables checked.If the FL8300 has a serial number l

7、ower than indicated in the table below, perform the followingmodification:1) With the unit plugged in and turned on, push the “open/close” button to extend the drawer fully; then turn the unitoff and unplug it.2) Open the top cover (6 screws).3) Remove output board PCB3 from the rear panel (4 screws

8、). This board can be pulled back and modified withoutcompletely removing it from the chassis.4) Locate resistor R901, it may be a 680 ohm resistor or a jumper wire; replace in either case with a 0.47uf capacitor h/k part# 5354-474593.5) Locate R903 and change from 680? to a 4.7k? resistor ? h/k part

9、 # 3029472970. Re-attach output PCB3 to theunit.6) Connect a 75 Ohms cable to the digital output jack. Terminate this cable with a 75 Ohm load; connect anoscilloscope to the 75 Ohm termination resistor. While playing a CD, confirm the output of the signal is now 500mV ?10% peak to peak.7) Reassemble

10、 the FL8300 and test all functions. ModelSerial number120VSerial number230VStatusActionFL8300IN0019-01001toIN0019-19393IN0020-01001toIN0020-04500May have low digitaloutput for someapplicationsReplace R901 with 0.47 uf mylarcapacitor h/k part# 5354-474593Replace R903 with 4.7k ohm resistorh/k part# 3

11、029472970FL8300IN0019-19394IN0020-04501Factory Installed *NONE REQUIRED* Factory modification of the FL8300 starting with the serial numbers indicated in the above table consisted of: R236: 1k Ohm R901: Jumper or 680 Ohm R903: Changed from 680 Ohm to 4.7k Ohm. Digital output level into 75 Ohms: 500

12、mV ? ?10% peak to peak.22 harman/kardon Service Bulletin Service bulletin # 9607-January 97 This is considered a Major Repair To: All harman/kardon Service Centers Models: FL8300 Compact disc changer Subject: Failure to play Multi-media CDs or skip data tracks _ Early FL8300 CD Players used a micro-

13、computer which could not read the table of contents (TOC) of certain multimedia CDs or skip data tracks on multimedia CDs. During two running production changes, new Microprocessor were installed which performs as shown in the table below: Description IC112 Part Number Serial number Range120V Serial

14、 number Range230V Processor action Year/Month first used CXP21320-322 DWP325 2138322197 IN0019-01001 to IN0019-29000 IN0020-01001 to IN0020-05500 Does not play Multimedia CD 95 October CXP82320-352Q DWP325A 2139322710 IN0019-29001 to IN0019-53790 IN0020-05501 to IN0020-08510 Plays Multimedia CD, Mut

15、es at data track 96 July CXP82320-367Q DWP325B 2139322722 IN0019-53791 to present production IN0020-08511 to present production Plays Multimedia CD, Skips data tracks 96 November In the event you receive a FL8300 from a consumer with a complaint “Player will not read or, loudspeakers make strange no

16、ise while playing multimedia CDs”, replace IC112 with H/K Part number 2139322722. The IC can be identified by CXP82320-367Q DPW 325B printed on its case. harman/kardon Incorporated, 250 Crossways Park Dr. Woodbury, New York 11797 (516) 496-3400 23harman/kardon Incorporated, 250 Crossways Park Dr. Wo

17、odbury, New York 11797 (516) 496-3400harman/kardon Service BulletinService bulletin # 9703 June 1997This is considered a Major Repair To:All harman/kardon Service Centers Models: FL8300 Subject: Dead unit, no display; Service upgradeIn the event you receive an FL8300 that is dead, and upon inspectio

18、n R701 is damaged or an otherwiseopen circuit, perform the necessary steps listed below:Due to current surges, early models of the FL8300 could repeatedly damage R701 (either a 1 ohm resistor or1.5A micro fuse depending on version). Along with the replacement of R701, the positive lead should berelo

19、cated on C125 to suppress any future current surges.Additionally, two capacitors, now designated as C907 & C908, (1uf/50v) should be added to the power supplyoutput pins on regulator IC108 & IC111 on a unit serviced for any reason; these will add stability to help preventoscillation.PROCEDURE:1) Rep

20、lace R701 with micro-fuse H/K # 5508722221, this component is on PCB7.2) A PCB trace should be cut on the C125 (2200 uf/25v) positive lead on the main circuit board and an insulatedjumper wire attached from that lead to the junction of D109/110. Additionally another insulated jumper willneed to repl

21、ace the trace that was cut. (see drawing)3) Add C907 & 908, 1uf/50v , H/K/ # 3479310971, one on each output pin to ground on regulators IC108 andIC111. This is most easily accomplished by: Soldering one 1uf cap to the jumpers 153 & 197. Observe polarity; J153 is ground. Soldering one 1uf cap to the

22、jumpers 185 & 186. Observe polarity; J186 is ground. ModelSerial number120VSerial number230VActionCorrectionFL8300IN0019-72213and belowNOT REQUIREDR701 is damaged oran open circuitReplace R701,re-route positive connectionon C125,Add C907/908FL8300IN0019-72214and aboveNOT REQUIREDModified by factoryN

23、ONE REQUIRED24harman/kardon Incorporated, 250 Crossways Park Dr. Woodbury, New York 11797 (516) 496-340025 harman/kardon TECH TIPSTECH TIPS Troubleshooting tips and solutions to common service problems For models: FL8300 TIP# HKTT2003-02 Problem: Carousel not stopping in the correct position, so dis

24、c can be clamped correctly. Check: 1) 6-conductor Ribbon cable connection to sensor board - check cable; clean, re-seat at both ends. 2) There is a post/standoff underneath the single center screw in the center of the carousel (under the plastic 1,2,3,4,5 cap). If that post/standoff is too long, it

25、can cause the symptom. If the part is higher than the surface of the carousel in that area, the part needs to be shaved down so its shorter. 3) Defective Roulette sensor (part# 2408001111) or Disc sensor (part# 2408210001). 26272829303132333435363738394041424344454647484950515253545556575859606162636465666768