Yamaha 505 Service Manual

GX-505/GX-505VCDGX-505/VCD100714SERVICE MANUALGX-505GX-505VCDMINI COMPONENT SYSTEMIMPORTANT NOTICEThis manual has been provided for the use of authori

GX-505/GX-505VCDGX-505/VCD9Fig. 4Fig. 55. Operation Check of CD/VCD P.C.B.a. Remove the CD Mechanical Unit.b. Remove 5 screws ( y ) and then remove th

GX-505/GX-505VCDGX-505/VCDFig. 7Fig. 6Fig. 86. Operation Check of Main P.C.B. (1)a. Remove the CD Mechanical Unit.b. Remove the Panel Unit.c. Remove t

GX-505/GX-505VCDGX-505/VCD117. Removal of Tray & Traverse Unita. Remove 2 screws ( !1 ) and then remove the Clamper Bracket in Fig. 10.b. Remove 1

GX-505/GX-505VCDGX-505/VCDFig. 15Fig. AFig. 139. Removal of Cassette MechanismRemove 4 screws ( !8 ) and then pull out the CassetteMechanism in Fig. 1

GX-505/GX-505VCDGX-505/VCDDISPLAYVOL MINVOL 01VOL 02VOL 03VOL 04VOL 05VOL 06VOL 07VOL 08VOL 09dB– ∞–79–73–68–64–61–59–58–57–56DISPLAYVOL 10VOL 11VOL 5

GX-505/GX-505VCDGX-505/VCD TEST MODETo facilitate inspection, measurement and location of any faulty point, 6 types of built-in Test Modes are provid

GX-505/GX-505VCDGX-505/VCDNo. & DISPLAY01 G , E , TEST02 FL + CLEAR03 FL FULL04 APO - ON/OFF05 RDS - OFF/ON06 A , PS - ON/OFF07 A , M , - RDS/ALL0

GX-505/GX-505VCDGX-505/VCDPreset groupABCDEP1 P2 P3 P4 P5 P6 P7 P8CAUTION : When executing Test program No. 2 RAM CLEAR, be sure to write down the pre

GX-505/GX-505VCDGX-505/VCDThe CD TEST MODE is enabled. Each button operates as follows for each mode. The MODE No. is increased bypushing "+10&q

GX-505/GX-505VCDGX-505/VCD ALL FUNCTION TEST MODEWhen ALL FUNCTION TEST MODE is set through SYSTEM TEST MODE, “AUX/MD” appears on the FL display.The

GX-505/GX-505VCDGX-505/VCD TO SERVICE PERSONNEL1. Critical Components Information.Components having special characteristics are marked Zand must be r

GX-505/GX-505VCDGX-505/VCD CD STANDARD OPERATION CHARTPress OPEN/CLOSE key.Forced feed return operation.Clamp down operation.Disc table reset.Tray op

GX-505/GX-505VCDGX-505/VCD20* ~ Data fetch cycle ~TRACK No. “1” is searched.~ PLAY ~Set to SEARCH by means of Y, T key.MUTE ON.TRACK search.After sea

GX-505/GX-505VCDGX-505/VCD ADJUSTMENTS (DECK SECTION ONLY)1. Before adjustment● Since head magnetization, dust accumulations, etc.are likely to intro

GX-505/GX-505VCDGX-505/VCD“MECHANICAL ADJUSTMENT”Item to beAdjustedCheck eachtorqueCheck FF, REWtake up timeAzimuthTape SpeedWow/FlutterTapeCT-160L (F

GX-505/GX-505VCDGX-505/VCD< Recording section >RatingAdjust for equal record andplayback levels.(– 27 dBV ± 0.3 dBV)Adjust for equal record andp

GX-505/GX-505VCDGX-505/VCDIC8 : M38199EF [CD/VCD P.C.B.]8 bit µ-COM (CD CPU)24PortP77AN6P75P74P73P72P71P70PB3PB2P57P56P55P54P53P52P51P50P67P66P65P64P6

GX-505/GX-505VCDGX-505/VCD25IC8 : M38199EF [CD/VCD P.C.B.]8 bit µ-COM (CD CPU)PortINT3INT2P41INT0/RESETXCINXCOUTXINXOUTVSSP27P26P25P24P23P22P21P20P17P

GX-505/GX-505VCDGX-505/VCDPortAN7AN6AN5AN4AN3AN2AN1AN0PB3DAAN15SCLK3SO3SI3AN11No.123456789101112131415FunctionMODEL/PRO LOGIC MODE DETECT (A-D)SPECTRU

GX-505/GX-505VCDGX-505/VCDPortSCLK2SO2SI2P67SCLK1SO1SI1P63P62P61P60P47P46INT1INT4INT3INT2P41INT0/RESETXCINXCOUTXINXOUTVSSP27P26P25P24P23P22P21P20P17P1

GX-505/GX-505VCDGX-505/VCDPortP94P93P92P91P90P87P86P85P84P83P82P81P80PA7PA6VCCPA5PA4PA3PA2PA1PA0VEEAVSSVREFNo.7677787980818283848586878889909192939495

GX-505/GX-505VCDGX-505/VCD2B, G, R, L, T modelsB, G, R, L, T modelsLaser Emitting conditions:1) When the Top Cover is removed, and the STANDBY SW is t

GX-505/GX-505VCDGX-505/VCDIC5 : MN35511AL [CD/VCD P.C.B.]Signal Processor & ControllerPin No.12345678910111213141516171819202122232425262728293031

GX-505/GX-505VCDGX-505/VCDPin No.333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980FunctionTracking erro

GX-505/GX-505VCDGX-505/VCD31● V800 : 16-BT-63GK (V2959000)Note 1) F1, F2 ... Filament2) NP ... No Pin3) NC ... No Connecti

GX-505/GX-505VCDGX-505/VCD● ANODE CONNECTION32(RIGHT)(LEFT)(LEFT)(RIGHT)(BELOW)(UPPER)(RIGHT)(CENTER)(LEFT)

GX-505/GX-505VCDGX-505/VCD BLOCK DIAGRAMPK1AMCOIL PACKIF AMPQ1CERAMICFILTERL1CERAMICFILTERL28127L.P.FL.P.FTUNER.RTUNER.LTUNERAM/FM IFMPXIC1LA1838PLLI

ABCDEFGH123456GX-505/GX-505VCD(CD/VCD) Page 62, 63(INPUT) Page 64, 65(INPUT) Page 64, 65CD CPUIC8HEADAMPIC4AN8806SBACTMOTORDRIVEIC1M56748FPMOTORDRIVEI

ABCDEFGH123456GX-505/GX-505VCD(INPUT) Page 64, 65(OPE) Page 66, 67(INPUT) Page 64, 65(MAIN) Page 68(OPE) Page 66, 67(OPE) Page 67(OPE) Page 66, 67VOLU

ABCDEFGH123456GX-505/GX-505VCD PRINTED CIRCUIT BOARD (Foil side)38 39Point u (Pin12 of IC4)V : 2V/div H : 0.1 µsec/divDC range 1 : 1 probePoint y (Pi

ABCDEFGH123456GX-505/GX-505VCD PRINTED CIRCUIT BOARD (Foil side)40 41Point q (Pin59 of IC5)V : 2V/div H : 50 nsec/divDC range 1 : 1 probePoint w (Pin

ABCDEFGH123456GX-505/GX-505VCD PRINTED CIRCUIT BOARD (Foil side)42 43Point q (Pin59 of IC5)V : 2V/div H : 50 nsec/divDC range 1 : 1 probePoint w (Pin

GX-505/GX-505VCDGX-505/VCD GX-505 PANELS▼ B, G models▼ U, C, R, A models3

ABCDEFGH123456GX-505/GX-505VCD PRINTED CIRCUIT BOARD (Foil side)44 4512V-12VLERDGNDU5.6VSYSICDCECDRESSYSOSYSCKVSELAGNDAGNDSTEINSTADTUDATATUCLKTUDOTUC

ABCDEFGH123456GX-505/GX-505VCD PRINTED CIRCUIT BOARD (Foil side)46 47Point e (Pin37 of IC8)V : 2V/div H : 20 µsec/divDC range 1 : 1 probePoint r (Pin

ABCDEFGH123456GX-505/GX-505VCD PRINTED CIRCUIT BOARD (Foil side)48 4912V-12VLERDGNDU5.6VSYSICDCECDRESSYSOSYSCKVSELAGNDAGNDSTEINSTADTUDATATUCLKTUDOTUC

ABCDEFGH123456GX-505/GX-505VCD PRINTED CIRCUIT BOARD (Foil side)50 51Point e (Pin37 of IC8)V : 2V/div H : 20 µsec/divDC range 1 : 1 probePoint r (Pin

ABCDEFGH123456GX-505/GX-505VCD PRINTED CIRCUIT BOARD (Foil side)52 53OPERATION P.C.B. ( 2 ) (Lead Type Device)1912413121910 1813264 33 BASSINPUT

ABCDEFGH123456GX-505/GX-505VCD PRINTED CIRCUIT BOARD (Foil side)54 55OPERATION P.C.B. ( 1 ) (Surface Mount Device)OPERATION P.C.B. ( 2 ) (Sur

ABCDEFGH123456GX-505/GX-505VCD PRINTED CIRCUIT BOARD (Foil side)56 57GX-505VCD OPERATION P.C.B. ( 3 )(Lead Type Device)12MICMIXINGMICDATALATCHEEEEECL

ABCDEFGH123456GX-505/GX-505VCD58 59 PRINTED CIRCUIT BOARD (Foil side)-27V-12V-HB-LBTRACECDAC2CDAC1FAC2FAC1CDGNDCDGNDCDB-LBKGND+12MLB-27V-12V12VFAC2FA

ABCDEFGH123456GX-505/GX-505VCD60 61 PRINTED CIRCUIT BOARD (Foil side) PIN CONNECTION DIAGRAM● ICs5150318180100301M38199EFFPMN35511AL4140216061802013

ABCDEFGH123456IJKLMN78910GX-505/GX-505VCD SCHEMATIC DIAGRAM (GX-505 CD)* All voltage are measured with a 10MΩ/V DC electric volt meter.* Components h

GX-505/GX-505VCDGX-505/VCD▼ A model▼ U, C models▼ R model▼ B, G models4

ABCDEFGH123456IJKLMNO78910GX-505/GX-505VCD SCHEMATIC DIAGRAM (GX-505VCD VCD)* All voltage are measured with a 10MΩ/V DC electric volt meter.* Compone

ABCDEFGH123456IJKLMN78910GX-505/GX-505VCD SCHEMATIC DIAGRAM (GX-505 INPUT)The voltages are measured by LH tape at PLAY mode (no-signal condition)Only

ABCDEFGH123456IJKLMNO78910GX-505/GX-505VCD SCHEMATIC DIAGRAM (GX-505VCD INPUT)The voltages are measured by LH tape at PLAY mode (no-signal condition)

ABCDEFGH123456IJK78GX-505/GX-505VCD SCHEMATIC DIAGRAM (GX-505 OPERATION)* All voltage are measured with a 10MΩ/V DC electric volt meter.* Components

ABCDEFGH123456IJKL78GX-505/GX-505VCD SCHEMATIC DIAGRAM (GX-505VCD OPERATION)* All voltage are measured with a 10MΩ/V DC electric volt meter.* Compone

ABCDEFGH123456IJK78GX-505/GX-505VCD SCHEMATIC DIAGRAM (GX-505/GX-505VCD MAIN)* All voltage are measured with a 10MΩ/V DC electric volt meter.* Compon

ABCDEFGH123456IJKL78GX-505/GX-505VCD SCHEMATIC DIAGRAM (GX-505/GX-505VCD TUNER)Each voltage represents the voltage when receiving FM (stereo) signal

GX-505/GX-505VCDGX-505/VCD70ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS :C.A.EL.CHP : CHIP ALUMI. ELECTROLYTIC CAPC.CE : CERAMIC CAPC.CE.ARRAY : CERAMIC

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*71* V5500100 P.C.B. INPUT(UC)* V5500200 P.C.B.

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*72C104 UB044100 C.CE.M.CHP 0.01uF 50VC105 UB05

GX-505/GX-505VCDGX-505/VCD▼ R, T models▼ L model GX-505VCD PANELS5

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*73Q11 iC174020 TR 2SC1740S R,SQ12 iC174020 TR

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*74C244 UA953220 C.MYLAR 2200pF 50VC245 UA95322

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*75* V5503100 P.C.B. CDCB2 V2731000 CN.FMN 16PC

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*76PN2 V3750200 PIN L=70PN4 V3750200 PIN L=70Q1

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*77* D807 V5479500 LED(or) SELS5923C* D808 V582

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*78V4000200 P.C.B./CHP TUNER/TU-02(UCR)* V40003

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*79V5500500 P.C.B. INPUT(RT)V5500600 P.C.B. INP

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*80C104 UB044100 C.CE.M.CHP 0.01uF 50VC105 UB05

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*81Q6 VV655300 TR.DGT DTA144EKAQ7 VV655700 TR.D

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*82V4000800 P.C.B. MAIN(RT)V4000900 P.C.B. MAIN

GX-505/GX-505VCDGX-505/VCD SPECIFICATIONS AMPLIFIER SECTIONMinimum RMS Output Power per Channel1kHz, 0.9% THD, 6Ω ...

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*83Q208 VP883000 TR 2SA893A D,EQ209 VP883100 TR

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*84C47 UB044100 C.CE.M.CHP 0.01uF 50VC48 VR4981

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*85V5502200 P.C.B. OPERATION(RLT)CB801 VM859600

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*86* D819 V5820000 LED(gr) SEL5523C* D820 V5820

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*87V4000200 P.C.B./CHP TUNER/TU-02(RT)V4000500

GX-505/GX-505VCDGX-505/VCDSchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*88RD250000 R.CAR.CHP 0Ω 1/10WRD253100 R.CAR.CH

ABCDE1234567GX-505/GX-505VCD GX-505 EXPLODED VIEW8920420318515434102126181150150125182107200186151155615512112015015103151151151151151151151121011561

GX-505/GX-505VCDGX-505/VCD GX-505 MECHANICAL PARTSRef.No. PART NO. Description Remarks MarketsNew Parts*90* 1- 3 V5502100 P.C.B. ASS’Y OPERATION1- 5

GX-505/GX-505VCDGX-505/VCDRef.No. PART NO. Description Remarks MarketsNew Parts*91* 6 V4000400 P.C.B. ASS’Y TUNER/TU-02 (BG)* 7 V4000600 P.C.B. ASS’Y

GX-505/GX-505VCDGX-505/VCDRef.No. PART NO. Description Remarks MarketsNew Parts*92190 EP600290 BIND HEAD P-TITE SCREW 3x6 ZMC2-YACCESSORIES* 200

GX-505/GX-505VCDGX-505/VCD INTERNAL VIEWLeft sideTop sideq TUNER P.C.B.w MAIN P.C.B. (5)e MAIN P.C.B. (1)r INPUT P.C.B. (1)t OPERATION P.C.B. (3)(GX-

ABCDE1234567GX-505/GX-505VCD93 GX-505VCD EXPLODED VIEW20420318515410212618115015015012518210720018615115561551211201501510315115115115115115115112101

GX-505/GX-505VCDGX-505/VCD94 GX-505VCD MECHANICAL PARTSRef.No. PART NO. Description Remarks MarketsNew Parts** 1- 3 V5502200 P.C.B. ASS’Y OPERATION1-

GX-505/GX-505VCDGX-505/VCDRef.No. PART NO. Description Remarks MarketsNew Parts*956 V4000500 P.C.B. ASS’Y TUNER/TU-02 (L)7 V4000800 P.C.B. ASS’Y MAIN

GX-505/GX-505VCDGX-505/VCDRef.No. PART NO. Description Remarks MarketsNew Parts*96ACCESSORIES* 200 V5248500 REMOTE CONTROL TRANSMITTER RC-7060-01-0009

ABCDE1234567GX-505/GX-505VCD97 EXPLODED VIEW (CD Mechanism Unit)3029652826271925222324513132336654363535342145465655116155318171920141464125311109588

GX-505/GX-505VCDGX-505/VCD98 MECHANICAL PARTS (CD Mechanism Unit)Ref.No. PART NO. Description Remarks MarketsNew Parts** V5256400 CDC MECH. UNIT MGC-

GX-505/GX-505VCDGX-505/VCDRef.No. PART NO. Description Remarks MarketsNew Parts*99* 58 AAX14290 SCREW (A) E9D8006* 64 AAX14280 SCREW (J) C3D8028* 65 A

GX-505/GX-505VCDGX-505/VCDGREASE APPLICATION DIAGRAM (CD Mechanism)A-1104A-1104A-1104A-1104EM50LEM50LEM50LMEN-125FMEN-125FA-1104MEN-125FMEN-125FMEN-12

ABCDE1234567GX-505/GX-505VCD EXPLODED VIEW (Loading Unit)Ref.No. PART NO. Description Remarks MarketsNew Parts*AAX07660 LOADING UNIT F5116303 AAX0748

ABCDE1234567GX-505/GX-505VCD EXPLODED VIEW (Cassette Deck Mech. Unit)F RECMETALCASS INCrR RECRef.No. PART NO. Description Remarks MarketsNew Parts*AA

GX-505/GX-505VCDGX-505/VCDFRONTFrictionArm DISASSEMBLY PROCEDURES (Remove parts in the order as numbered.)Fig. 3Fig. 2Fig. 181. Removal of Top CoverR

ABCDE1234567GX-505/GX-505VCDGX-505 REMOTE CONTROL TRANSMITTER SCHEMATIC DIAGRAM2019181716151413121112345678910+R1 1IR-LEDQ12SD1781KR2 1803VC1 47µF/16

ABCDE1234567GX-505/GX-505VCDGX-505VCD REMOTE CONTROL TRANSMITTER SCHEMATIC DIAGRAM2019181716151413121112345678910+R1 1IR-LEDQ12SD1781KR2 1803VC1 47µF

Parts List for Carbon Resistors1/6W Type Part No.HF45 7100HF45 7110HF85 7120HF45 7130HF45 7150HF45 7180HF45 7220HF45 7240HF85 7270HF45 7300HF45 7330HF