Arcam-CD23-cd-sm维修电路原理图.pdf

CD23FMJ CD23Compact Disc Player (Text) Service Manual ARCAMARCAMIssue 1.0RadioFans.CN 收音机爱 好者资料库Contents List ! Service guide oFault diagnostics oPower supply test points oHints & tips ! Main board L935 oCircuit description oComponent overlay oParts list oCircuit diagrams ! DAC board L912 oCircuit description oComponent overlay oParts list oCircuit diagrams ! Transformer specifications oL859TX oL860TX oL883TX ! General assembly oParts list RadioFans.CN 收音机爱 好者资料库 Service Guide Contents ! Fault diagnostics ! Power supply test points ! Hints & tips CD23 (Text) Service Guide Fault diagnostics Fault Action No power Check mains fuse Check power supply rails No Audio output Check for digital output, if ok then check power supply voltages Check DAC chip Intermittent noise on output Check Dac chip Fails to respond to commands Check supply to remote circuit Check remote flex foil cable Check for +4.9volts on RX201 o/p Fails to read disc Check mech supply Check clock signal Laser optic moves to end stop position Caused by failure of clock signal to the mech Check mech supply Check clock signal No Display Check filament voltage 3.1vac Check flex foil cable Check for dry joints on micro and display Spurious display readout Check for dry joints on display board Power supply test points Position Voltage DGND 0 volts PL202 +12 volts PL204 -12 volts IC200 o/p +7.3 volts - mech supply IC203 o/p +5 volts - DAC supply IC202 o/p +5 volts - Digital supply IC204 o/p -30 volts Between R227 & R228 3.1 volts AC display filament Hints & tips ! Voltage conversion 230/115VAC by changing the internal fuse position and fitting the correct rated fuse. 100VAC requires a different transformer. Main Board L935 Contents ! Circuit description ! Component overlay ! Parts list ! Circuit diagrams CD23 (text) Circuit Description Power Supplies Transformers 115/230 VAC: ! Main board - part number L859TX ! Toroid - part number L860TX 100 VAC: ! Main board - part number L862TX ! Toroid - part number L883TX Main board transformer secondary windings: 1. 9V-0V-32V to produce the digital, motor drive and fluorescent display grid supplies +11V(U) Unregulated supply for relay drive and +5V(D) supply +7V (IC200) Mechanism and motor driver supply +5V(D) (IC202) General digital logic supply +5V(A) (IC203) Supply to DAC -30V (IC204) Display grid voltage. 2. 0-5V to provide an AC supply for the display filament. Toroid transformer secondary winding: 1. 13.7-0V-13.7 for audio output circuitry (DAC) Relay Mute Control This circuit drives a relay to un-mute the analogue output 5 seconds after the unit is powered on, and quickly mutes the output when the unit is switched off. The circuit works effectively as an “AND” gate. If AC is present on the transformer secondary winding and the 5-second timer composed of R222 and C221 has reached the threshold voltage (Vbe of TR200 + Vbe of TR201 - Vce of TR202, or 1.0V), the relay coil is connected to +11V (referenced to 0V_3 as required by the DACs internal circuitry) via TR204. When AC is removed, C231 discharges quickly through R225, the base voltage of TR204 rises and the relay coil voltage is removed, muting the output. TR203 resets the timer by discharging C221 quickly at turn-off. Remote Control/PIC Micro Remote control data is received from the IREye on the display PCB and buffered by TR300 and TR301. The Programmable Interrupt Controller converts the RC-5 format data into the NEC format required by the Sony micro. The PIC also controls the configuration of the digital filter/DAC on the DAC board. Motor Driver The status of the drawer is indicated to the micro by two micro switches INSW and OUTSW on SK205. The micro controls the drawer motor via driver IC303. Clock Buffering The clock and data signals LRCK, ADATA and BCLK from the mechanism connector SK300 are double buffered by IC300 before being delivered to the DAC. Power-On/Reset The power-on reset signal XRST (or RESET) is generated by R409, C410 and IC404. When the power is turned on, C410 is initially uncharged and pin 11 of IC404 is at high voltage, and thus the output is low. After a short time, C410 is charged via R409; IC404 pin 11 is then low, and the output switches high (RESET is de-asserted). System Clock The system clock is generated on the DAC board. The clock and data signals LRCK, ADATA and BCLK from the mechanism connector SK300 are double buffered by IC300 before being delivered to the DAC. The system clock is delivered to the mech via two-position jumper PL300. Microcontroller & Display Board The system microcontroller IC100 serves the following functions: ! Control of the mechanism & decoder on the CDM14 mechanism ! Control of mute, attenuation and de-emphasis for the DAC ! Direct drive of the fluorescent display ! Remote control decoding ! Keyboard scanning ! DAC muting The keyboard scanning works by connecting the keys to a resistor ladder on an ADC input to the micro. Pressing a key presents a unique voltage to this input, which the micro is pre-programmed to interpret accordingly. The remote control data contains a Customer Code that identifies this as an Arcam product. The diode network D100 to D106 configures the micro to accept this code. Remote Bus Carrier Filter & Demodulator Remote control commands can be delivered over wire to SK500 for multi-room applications. Incoming signals are attenuated and clipped by resistors and D500. L500 and C508 form a parallel resonant circuit at approximately 37kHz. This demodulates the incoming signal and the output is passed to IC501A where it is chopped, low pass filtered and fed to IC501B to provide the RC5 output signal. Digital Output The decoder on the mechanism assembly generates an SPDIF format digital output signal. This is passed to buffer IC500A. IC500B through E are used in parallel to provide a transformer less 75-ohm source impedance to a single phono socket SK501. Optical digital output via IC502 is also tapped off the digital output signal via IC500F. CAM Products 2000(TM):L935 Main Board Parts List Issue 4.0Designator PartDescriptionBR2003BDF01MBridge rectifier DF01M 1A 100VBR2013BDF01MBridge rectifier DF01M 1A 100VC1002A210CERD 1N0 63V 20% RAC1012A210CERD 1N0 63V 20% RAC1022A210CERD 1N0 63V 20% RAC1032N710ELST 100U 25VC1032P710ZAELST 100U 25V ZA RUBYCONC1042A410CERD 100N 63V 20% RAC1052A410CERD 100N 63V 20% RAC1062A410CERD 100N 63V 20% RAC1072A410CERD 100N 63V 20% RAC1082A410CERD 100N 63V 20% RAC1092A410CERD 100N 63V 20% RAC1102N610ELST 10U 50VC1112A210CERD 1N0 63V 20% RAC1122A410CERD 100N 63V 20% RAC1132A210CERD 1N0 63V 20% RAC1142A210CERD 1N0 63V 20% RAC1152A210CERD 1N0 63V 20% RAC1162A210CERD 1N0 63V 20% RAC1172A210CERD 1N0 63V 20% RAC1292A310CERD 10N 63V 20% RAC1512A210CERD 1N0 63V 20% RAC1522A210CERD 1N0 63V 20% RAC1532A210CERD 1N0 63V 20% RAC1542A210CERD 1N0 63V 20% RAC1552A210CERD 1N0 63V 20% RAC1562A210CERD 1N0 63V 20% RAC2002K233SUPPR CAP 3N3 250VC2012K233SUPPR CAP 3N3 250VC2022K233SUPPR CAP 3N3 250VC2032D422220NF CLASS X2 CAP 275VRMSC2062A410CERD 100N 63V 20% RAC2072A410CERD 100N 63V 20% RAC2082A410CERD 100N 63V 20% RAC2092A410CERD 100N 63V 20% RAC2102N833ELST 3M3 25VC2112N810ELST 1M0 25VC2122N810ELST 1M0 25VC2152K410PEST 100N 63V 10%C2182N710ELST 100U 25VC2192N710ELST 100U 25VC2202N710ELST 100U 25VC2212N710ELST 100U 25VC2222N710ELST 100U 25VC2232N810ELST 1M0 25VC2242N810ELST 1M0 25VC2252N710BELST 100U 100VC2262N710BELST 100U 100VC2272N710BELST 100U 100VC2282N810AELST 1M0 10VC2292N810AELST 1M0 10VC2302N710ELST 100U 25VC2312N610ELST 10U 50VC3002A410CERD 100N 63V 20% RAL935 Main Board Parts List Issue 4.0Designator PartDescriptionC3012A410CERD 100N 63V 20% RAC3022A410CERD 100N 63V 20% RAC3032A410CERD 100N 63V 20% RAC3042A110CERD 100P 50V -20% +80% RAC3052N710ELST 100U 25VC3062N710ELST 100U 25VC3072A310CERD 10N 63V 20% RAC3082A410CERD 100N 63V 20% RAC4002A410CERD 100N 63V 20% RAC4102N710ELST 100U 25VC4142A410CERD 100N 63V 20% RAC5002A410CERD 100N 63V 20% RAC5012A310CERD 10N 63V 20% RAC5022K447PEST 470N 63V 10%C5032A210CERD 1N0 63V 20% RAC5042A310CERD 10N 63V 20% RAC5052A410CERD 100N 63V 20% RAC5062P622ELST 22U 20V OSCONC5072A410CERD 100N 63V 20% RAC5082D168PPRO 680P 5% 63V RAC5092A410CERD 100N 63V 20% RAC5102A110CERD 100P 50V -20% +80% RAC5112A410CERD 100N 63V 20% RAC5122A147CERD 470P 50V -20% +80% RAC5132A110CERD 100P 50V -20% +80% RAC5142A410CERD 100N 63V 20% RACA1L920CACD.T MAINS JUMPER CABLED1003A4148SSDIODE 1N4148 75VD1013A4148SSDIODE 1N4148 75VD1023A4148SSDIODE 1N4148 75VD1033A4148SSDIODE 1N4148 75VD1043A4148SSDIODE 1N4148 75VD1053A4148SSDIODE 1N4148 75VD1063A4148SSDIODE 1N4148 75VD2003A4148SSDIODE 1N4148 75VD2013A4148SSDIODE 1N4148 75VD2053A4148SSDIODE 1N4148 75VD2063A4148SSDIODE 1N4148 75VD2083A4148SSDIODE 1N4148 75VD2093A4148SSDIODE 1N4148 75VD2103A4148SSDIODE 1N4148 75VD2113A4148SSDIODE 1N4148 75VD2123A4148SSDIODE 1N4148 75VD2133B4003RECTIFIER 1N4003F 1A 200VD2143C05104Diode 5V1 400mWD2153A4148SSDIODE 1N4148 75VD3003A4148SSDIODE 1N4148 75VD3013C04704ZENER 4V7 400MWD4003A4148SSDIODE 1N4148 75VD5003C04704ZENER 4V7 400MWDISP100B1015DISP CD SONY 14-ST-20GKE1E930MCCD23TEXT VFD SUPPORTEL2008M101EARTH LEADFS200F022INS COVER PCB FUSEHOLDERFS2008S004FUSEHOLDER 20mm PCBL935 Main Board Parts List Issue 4.0Designator PartDescriptionFS201C11166FUSE 20mm 160mA T S504160mAFS201F022INS COVER PCB FUSEHOLDERFS2018S004FUSEHOLDER 20mm PCBHS200F006HEATSINK CLIP TO220 13/8.6 DC/WHS200F008HEATSINK TO220 8.6 DEGC/WHS201F007HEATSINK TO220 CLIP 30HS202F007HEATSINK TO220 CLIP 30IC1005G82832IC CD CXP82832-031Q MICROIC2005D1086AIC VREG LM1086CT-ADJIC2025D317TIC VREG POS LM317TIC2035D317TIC VREG POS LM317TIC2045D337IC VREG POS LM337TIC3005J7404IC HCMOS 74HCU04IC3025H16C54X IC CMOS MICRO PIC16C54XT/PIC3028S018IC SOCKET 18 PIN 0.3IC3025H16C54X IC CMOS MICRO PIC16C54XT/PIC3035Q1641IC MOTOR DRIVER LB1641IC4045J7404IC HCMOS 74HCU04IC5005J7404IC HCMOS 74HCU04IC5015M393AIC COMPARITOR DUAL LM393AIC5025TG550TSPDIF OPTICAL TRANSMITTERIC302SWL825SWSOFTWAREIC302SWL825SWSOFTWAREL2007D968A6U8H INDUCTORL2017D968A6U8H INDUCTORL4007F003FERRITE BEAD SINGLE AXIAL TAPED 2K BOXL5007D32727mH INDUCTORLED1003D001LED GREEN 5MMLED1013D003LED ULTRARED 5MMLK101AL814CAJUMPER 4-WAY LEADMC200E922MCMAGNETIC SHIELD PLATE (ATTACH TO TX WITH E923MC)MC201E923MCADHESIVE PAD (ATTACH TO E922MC & TX)PCBL935PB_3PRINTED CIRCUIT BOARDPCBL935PB_2PRINTED CIRCUIT BOARDR1001H122RES MF W4 220R 1%R1011H310RES MF W4 1% 10KR1021H310RES MF W4 1% 10KR1031H268RES MF W4 1% 6K8R1041H268RES MF W4 1% 6K8R1051H268RES MF W4 1% 6K8R1061H268RES MF W4 1% 6K8R1071H268RES MF W4 1% 6K8R1081H233RES MF W4 1% 3K3R1091H222RES MF W4 1% 2K2R1101H215RES MF W4 1% 1K5R1111H210RES MF W4 1% 1K0R1121H168RES MF W4 1% 680RR1131H010RES MF W4 1% 10RR1141H310RES MF W4 1% 10KR1151H310RES MF W4 1% 10KR1161H310RES MF W4 1% 10KR1171H310RES MF W4 1% 10KR2021K515RES W25 5% VR25 1M5R2031H133RES MF W4 1% 330RR2101G810RES MF FU W3 1R0 5% NFR25L935 Main Board Parts List Issue 4.0Designator PartDescriptionR2111G010RES MF FU W3 10R 5% NFR25R2121G810RES MF FU W3 1R0 5% NFR25R2131G010RES MF FU W3 10R 5% NFR25R2141H216RES MF W4 1% 1K6R2151H322RES MF W4 1% 22KR2161H210RES MF W4 1% 1K0R2171H333RES MF W4 1% 33KR2181H127RES MF W4 1% 270RR2191H127RES MF W4 1% 270RR2201H182RES MF W4 1% 820RR2211H182RES MF W4 1% 820RR2221H447RES MF W4 1% 470KR2231H310RES MF W4 1% 10KR2241H310RES MF W4 1% 10KR2251H222RES MF W4 1% 2K2R2261H310RES MF W4 1% 10KR2271H110RES MF W4 1% 100RR2281H110RES MF W4 1% 100RR2291H215RES MF W4 1% 1K5R2301H310RES MF W4 1% 10KR3001H056RES MF W4 1% 56RR3031H268RES MF W4 1% 6K8R3041H056RES MF W4 1% 56RR3061H056RES MF W4 1% 56RR3071H310RES MF W4 1% 10KR3081H310RES MF W4 1% 10KR3091H310RES MF W4 1% 10KR3101H310RES MF W4 1% 10KR3111H410RES MF W4 1% 100KR3121H268RES MF W4 1% 6K8R3131H410RES MF W4 1% 100KR3141H310RES MF W4 1% 10KR3151H310RES MF W4 1% 10KR4091H310RES MF W4 1% 10KR4321H310RES MF W4 1% 10KR4391H510RES MF W4 1% 1M0R5001H010RES MF W4 1% 10RR5011H010RES MF W4 1% 10RR5021H218RES MF W4 1% 1K8R5031H218RES MF W4 1% 1K8R5041H210RES MF W4 1% 1K0R5051H112RES MF W4 1% 120RR5061H212RES MF W4 1% 1K2R5071H310RES MF W4 1% 10KR5081H310RES MF W4 1% 10KR5091H310RES MF W4 1% 10KR5101H310RES MF W4 1% 10KR5111H147RES MF W4 1% 470RR5121H410RES MF W4 1% 100KR5131H410RES MF W4 1% 100KR5141H215RES MF W4 1% 1K5R5151H310RES MF W4 1% 10KR5161H212RES MF W4 1% 1K2R5171H212RES MF W4 1% 1K2R5181H212RES MF W4 1% 1K2L935 Main Board Parts List Issue 4.0Designator PartDescriptionR5191H110RES MF W4 1% 100RRX100B2107REMOTE RX PIC-26043TM2SK1008K813232-WAY FFC CONN HORIZSK2008A001IEC MAINS CONN PCB INS PXSK200HP007COPPER RIVET TCP/D48 BSSK2018K2304MOLEX MINI FIT 4 WAYSK2028K2306MOLEX MINI FIT HCS 6 WAYSK2038K802323-WAY FFC CONN VERTSK3008K802323-WAY FFC CONN VERTSK3018K803232-WAY FFC CONN VERTSK3028K803232-WAY FFC CONN VERTSK3038K20055-WAY AMP CT CONNSK5008D228MIN JACK SINGLE 3.5mmSK5018D220PHONO SKT SINGLE EMCSP103F215DS STICKY PAD 70 X 25mmSP104E822APIR RX SUPPORT PADSW100A1510TACT SWITCH 2-PIN LOW PROF NO GND PINSW101A1510TACT SWITCH 2-PIN LOW PROF NO GND PINSW102A1510TACT SWITCH 2-PIN LOW PROF NO GND PINSW103A1510TACT SWITCH 2-PIN LOW PROF NO GND PINSW104A1510TACT SWITCH 2-PIN LOW PROF NO GND PINSW105A1510TACT SWITCH 2-PIN LOW PROF NO GND PINSW106A1510TACT SWITCH 2-PIN LOW PROF NO GND PINSW107A1510TACT SWITCH 2-PIN LOW PROF NO GND PINSW200A1010SWITCH PUSH MAINS DPST TV-8TR2004A549TRANS LF SS N BC549BTR2014A549TRANS LF SS N BC549BTR2024A549TRANS LF SS N BC549BTR2034A549TRANS LF SS N BC549BTR2044A557TRANS LF SS P BC557BTR3004A549TRANS LF SS N BC549BTR3014A549TRANS LF SS N BC549BTX200L859TXFMJ COOL MULTI-VOLTAGE TXTX200L859TXFMJ COOL MULTI-VOLTAGE TXX1007W008CER RESON 8.00MHzX3007W005CER RESON 4.00MHzY200F185TX WIRE RESTRAINTY200F185TX WIRE RESTRAINTY201HF4V09BSCREWY202HF4V09BSCREWY203HF4V09BSCREWY204HF4V09BSCREWISSUEDRAWING NO.DRAWING TITLEDATEFilename:ECO No.DESCRIPTION OF CHANGEL935C6_4.0.prjCD23T - TOP LEVEL SCHEMATICContact Engineer:L935CT23-Jan-2002INITIALSPrinted:66SheetofNotes:Contact Tel:(01223) 203 200Travis PierceA & R Cambridge Ltd.Pembroke AvenueCambridge CB5 9PBWaterbeach23425FILAFILBL935C2_4L935C2_4.0.schFILAFILBBCLKADATALRCKRC5 IP17MHZRESETDIGOPEMPHASISL935C3_4L935C3_4.0.schDEEMLRCKADATABCLKRESET17MHZL935C4_4L935C4_4.0.schDIGOPRC5RPL935C5_4L935C5_4.0.schPOWER SUPPLIESMECH INTERCONNECTSDAC AND OSCILLATORRC5 INPUT AND DIG OUTPUTS0V_10V_20V_MOT0V_DIG0V_30V_DIGFIX151FIXING HOLE 3.2FIX150FIXING HOLE 3.5FIX152FIXING HOLE 3.5FIX153FIXING HOLE 3.5FIX157FIXING HOLE 3.2FIX155FIXING HOLE 3.5FIX156FIXING HOLE 3.5FIX154FIXING HOLE 3.5(EARTH BY IEC SOCKET)C1501N0 CDC1511N0 CDC1521N0 CDC1531N0 CDC1541N0 CDC1551N0 CDC1561N0 CD0V_DIG0V_DIG0V_DIG0V_DIG0V_DIG0V_DIG0V_DIGSP100STARPOINTL935C1_4L935C1_4.0.schDISPLAY PCBS/WIC302SWL825SWEMC1EMC2USE EXCLUDE NF WHEN GENERATING ROS.PCBPCBL935PB_43.0ADMINISTRATIVE ISSUE CHANGE, PCB TO ISS3 FOR AIWA REQCL04/10/0101_11714.0PCB REMOTE SNAP OFF CHANGEWAF22/1/0202_E011ISSUEDRAWING NO.DRAWING TITLEDATEFilename:ECO No.DESCRIPTION OF CHANGEL935C2_4.0.schCD23T - POWER SUPPLIESContact Engine