Denon UD-M31, Service Manual

Page 1: ...CD RECEIVER Some illustrations using in this service manual are slightly different from the actual set 16 11 YUSHIMA 3 CHOME BUNKYOU KU TOKYO 113 0034 JAPAN Telephone 03 3837 5321 X0164V 02 DE CDM 03...

Page 2: ...on the I O PWB 4 Remove 4 screws on the com PWB 5 Fully pull out the loader by turning the gear under the loader of the CD Mecha 6 Remove 4 screws to detach the CD Mecha SAFETY PRECAUTIONS The followi...

Page 3: ...the radiator the chas sis 2 Unplug 3 connectors on the AMP PWB 3 Detach the Main PWB together with the radiator 4 Remove 5 screws 5 Detach the Power PWB 6 DISPLAY PWB 1 Pull out the VR knob 2 Remove...

Page 4: ...EC OUT SEL IC302 LC75432M SELECTOR VR EQ IC305 BA15218F IC304 BA15218F IC205 M51957 IC201 UPD784216 MICON IC501 STK402 050 POWER AMP REC out IN REC out Pre out IN IC202 93LC66 IC203 BA05ST IC402 RPM69...

Page 5: ...1 LINE 2 LINE 1 REC LINE 2 REC 4dB ANALOG SWITCH 4066 PRE OUT 16dB BUFFER BUFFER MASTER VOLUME MUTE LC75342M ATT HP 0dB play back CD 1 1V LINE 1kHZ 150mV EQ FLAT SDB OFF 0 83dB 0dB 10dB 104dB dBV 16...

Page 6: ...e the disc and push the OPEN CLOSE button again 1 Load the CD disc 2 The pick up moves to the 10mm position 1 Display 01 2 The PLAY and the PAUSE mark lit 3 Focus and Track ing check mode 1 Push the P...

Page 7: ...tance is no longer made and only adjustment will be performed 2 Checking of servo state Press the PLAY button after performing above 1 DISC discrimination adjustment 02 L on is displayed and the laser...

Page 8: ...P When 8 cm DISC start SL TE Track search when forward SL During PLAY OPEN CLOSE When the tray OPEN SP When 12 cm DISC stop SP When 8 cm DISC stop TD TE RF DRF During PAUSE SL TE Track search when rev...

Page 9: ...1 I x tal connection for main sub clock oscillation not used Connect to VSS orVCC 15 RESET RESET I Micro computer reset input OTHER 16 P00 INTP0 REMOCON I Remote control receive data input RECIEVER 17...

Page 10: ...ECIEVER L 52 P84 A4 USA I Initial setting input RECIEVER 53 P85 A5 EURO I Initial setting input RECIEVER 54 P86 A6 FREQ I Initial setting input RECIEVER 55 P87 A7 RDS I Initial setting input RECIEVER...

Page 11: ...L 89 P33 TI1 O Not used NC CD L 90 P34 TI2 CDPOWER O CD power control signal output CD L 91 P35 TI00 O Not used NC OTHER L 92 P36 TI02 O Not used NC OTHER L 93 P37 HPSW I HEADPHONE Insertswitch detec...

Page 12: ...VV S S VV D D EFMO TST11 PW SBCK SBSY DEMO EFMO TST10 Level meter Peak meter Interpolation and mute Bilingual function 1 Digital output Bilingual function 2 Digital attenuator ASDACK P0 ASDFIN P1 ASDE...

Page 13: ...locked 22 FSEQ O Synchronization signal detection output Outputs a high level when the synchronization signal detected from the EFM signal and the internally generated synchronization signal agree 23...

Page 14: ...put This pin must be connected to 0 V if unused 62 FSX O Output for the 7 35 kHz synchronization signal divided from the crystal oscillator 63 WRQ O Subcode Q output standby output 64 RWC I Read write...

Page 15: ...S30 S31 S32 S33 S34 S35 S36 S37 S38 S40 S41 S42 S43 VFL G11 G10 G9 G8 G7 G6 G5 G4 G3 G2 G1 VFL S24 S23 S22 S21 S20 S19 S18 S17 S16 S15 S14 S13 S12 S11 S10 S9 S39 S8 S7 S6 S5 S4 S3 S2 S1 Vss OSC0 OSC1...

Page 16: ...which connects the FE signal gain setting resistor between this pin and FE pin 22 AGND Analog signal GND 23 NC No connection 24 SP CV and CV pins input signal single end output 25 SPG 12 cm spindle mo...

Page 17: ...pin used by DSP for controlling the data slice level 45 DGND Digital system GND pin 46 FSC Focus search smoothing capacitor output pin 47 TBC Tracking Balance Control EF balance adjustment variable ra...

Page 18: ...NP transistor collector connected 28 VCONT Loading output voltage set terminal 29 VREF IN Reference voltage applied terminal 30 VIN4 Input terminal for channel 4 31 VIN4 Input terminal for channel 4 3...

Page 19: ...LIN LTRE LOUT TEST Vss CE DI CL VDD Vref NC LBASS1 LBASS2 RVref LVref CCB INTERFACE 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 12 Vref MPXIN Vdda Vssa FLOUT CIN T1 T2 T3 RDCL T4 RDDA...

Page 20: ...12 TR12 TR10 R10 TR13 R9 TR5 TR8 R1 1 15 FRONT VIEW 1 2 3 4 5 6 7 8 CS SK Vcc DI DO WP ORG GND INSTRUCTION REGISTER INSTRUCTION DECODE CONTROL AND CLOCK GENERATION DATA REGISTER ADDRESS REGISTER Vcc R...

Page 21: ...P 2 3 2 6 P 2 2 2 5 P 2 1 2 4 P 2 0 2 3 P 1 9 2 2 P 1 8 2 1 P 1 7 2 0 P 1 6 1 9 P 1 5 1 8 P 1 4 1 7 P 1 3 1 6 P 1 2 1 5 P 1 1 1 4 P 1 0 1 3 P 9 1 2 P 8 1 1 P 7 1 0 P 6 9 P 5 8 P 4 7 P 3 6 P 2 P 1 N P...

Page 22: ...22 22 UD M31 PRINTED WIRING BOARD 1U 3498 MAIN UNIT Ass y COMPONENT SIDE Parts List...

Page 23: ...23 23 UD M31 1U 3498 MAIN UNIT Ass y FOIL SIDE Parts List...

Page 24: ...24 24 UD M31 1U 3507 CD UNIT ASS Y COMPONENT SIDE Parts List C923 R927 FOIL SIDE...

Page 25: ...t always in stock and possibly to take a long period of time for supplying or in some case supplying of part may be refused l When ordering of part clearly indicate 1 and I i to avoid mis supplying l...

Page 26: ...4 901 DTC144EKT96 TR305 269 0083 901 DTA114EKT96 TR306 269 0066 902 DTC323TKT96 TR307 269 0082 902 DTC114EKT96 TR308 269 0066 902 DTC323TKT96 TR309 273 0426 907 2SC2412KLNT146 TR310 269 0083 901 DTA11...

Page 27: ...43 RM73B 102JT R241 244 247 2018 903 RM73B 0R0KT R245 247 2007 943 RM73B 102JT R247 247 2009 909 RM73B 472JT 1608 R250 247 2008 913 RM73B 202JT R253 254 247 2011 942 RM73B 473JT R255 256 247 2008 913...

Page 28: ...T 1608 R416 419 247 2018 903 RM73B 0R0KT R501 502 247 2007 943 RM73B 102JT R503 504 247 2011 968 RM73B 563JT R507 508 244 2051 987 RS14B3A4R7JNBST S R509 510 241 2313 901 RD14B2E101GFRST R513 514 244...

Page 29: ...K73B1H102KT C337 338 257 0510 905 CK73B1H272KT C339 254 4538 913 CE04W1C220MT SMG RE3 C340 257 0501 901 CK73B1H103KT 1608 C341 343 254 4538 900 CE04W1C100MT SMG RE3 C344 254 4536 915 CE04W1A470MT SMG...

Page 30: ...W1C100MT SMG RE3 C622 257 0511 904 CK73F1H103ZT C623 254 4524 943 CE04W1H010MT SMG RE3 C624 625 257 0511 904 CK73F1H103ZT C626 254 4524 985 CE04W1H100MT SMG RE3 C627 254 4396 906 CE04W1J101MT SMG C628...

Page 31: ...18P FFC BASE SIDE F601 206 1074 073 FUSE 0 5A F602 206 1075 043 FUSE 2 5A FF601 602 202 0040 909 FUSE CLIP TAPE FH601 602 202 0040 909 FUSE CLIP TAPE FL401 393 8068 001 FL TUBE HNA 11SS47T JK301 302 2...

Page 32: ...32 32 UD M31 415 0908 003 SHIELD PLATE 1 449 0172 007 SENSOR HOLDER 1 461 1110 000 FL SPACER D SIDE 2 471 3304 015 3X8 CBS Z 2 1U 3498 MAIN UNIT ASS Y Ref No Part No Part Name Remarks Q ty New...

Page 33: ...562JT R816 247 2008 926 RM73B 222JT R817 247 2004 920 RM73B 470JT R818 247 2011 984 RM73B 683JT R819 247 2010 914 RM73B 133JT R820 247 2010 956 RM73B 203JT R821 247 2009 925 RM73B 562JT R822 247 2009...

Page 34: ...73B 0R0KT R883 247 2015 906 RM73B 155KT R884 247 2006 902 RM73B 331JT 1608 R885 247 2011 900 RM73B 333JT R886 247 2007 901 RM73B 681JT R887 247 2011 900 RM73B 333JT R888 247 2007 969 RM73B 122JT R890...

Page 35: ...0501 901 CK73B1H103KT 1608 C853 254 3056 917 CE04D1H010MBPT SME C854 257 0510 918 CK73B1H332KT C855 257 0506 951 CC73CH1H101JT C857 254 4538 900 CE04W1C100MT SMG RE3 C858 860 257 0512 903 CK73F1E104ZT...

Page 36: ...OTHER PARTS GROUP CX52 205 0355 059 5P KR CON BASE L CX61 205 0355 062 6P KR CON BASE L CX162 205 0892 033 16P FFC BASE P 1 CX251 205 1050 010 25P FFC BASE 9603F CY34 205 0355 033 3P KR CON BASE L FB...

Page 37: ...03 103 18 19 101 110 8 3 9 104 104 104 13 102 1 2 104 105 43 33 27 27 47 21 1 3 28 28 29 30 1 4 41 6 5 7 14 101 15 101 14 23 44 16 17 46 103 103 101 101 103 20 24 25 1 5 1 7 1 9 26 103 15 101 4 Parts...

Page 38: ...2 0633 139 TOP COVER 1 23 233 6441 001 POWER TRANS E2 1 24 206 2089 106 AC CORD W CON E2 For E2 1 206 2128 009 AC CORD W CON EK For EK 25 445 0056 008 CORD BUSH 1 26 216 0108 002 TUNER PACK TFCE1E5 1...

Page 39: ...048 25P FFC CORD CX251 1 204 6347 000 12P PH PH CON CORD CY121 1 001 0144 037 VINYL WIRE W720 1 SCREWS 101 473 7015 005 3X6 CBTS S B 17 102 473 7002 005 3X6 CBTS S Z 10 103 473 7500 044 3X8 CBTS P B...

Page 40: ...01 Drive gear 1 7 964 0009 608 Slide gear 1 8 964 0009 705 Pulley gear 1 9 964 0009 802 Square belt 1 10 964 0009 909 Magnet 1 Ref No Part No Part Name Remarks Q ty 11 964 0010 008 Mecha lifter 1 12 9...

Page 41: ...9 LOOP ANTENNA 1 207 395 0026 005 FM ANT WIRE 1 208 CONT CARD L 1 209 501 2231 105 CARTON CASE 1 210 503 1451 005 CUSHION L 1 211 503 1452 004 CUSHION R 1 212 502 1074 007 CUSHION BOARD A For EK 1 213...

Page 42: ...NIT CD MECHA 1U 3498 8 SP UNIT 1U 3507 CD PWB UNIT 1U 3498 4 DISPLAY UNIT 1U 3498 6 AMP 2 UNIT POWER TRANS CY152 CX121 CX072 CY151 CX041 CY181 CX051 CX143 CY143 CY038 CX081 CX151 CY153 CX153 CX033 CX0...

Page 43: ...check If the leakage current exceeds 0 5 milliamps or if the resistance from chassis to either side of the power cord is less than 460 kohms the unit is defective WARNING DO NOT return the unit to the...

Page 44: ...498 2 CON UNIT 1U 3498 3 I O UNIT 1U 3498 4 DISPLAY UNIT 1U 3498 5 AMP1 UNIT 1U 3498 6 AMP2 UNIT 1U 3498 7 JUNCTION UNIT 1U 3498 8 SP UNIT SIGNAL LINE SCHEMATIC DIAGRAMS 1 2 UD M31 44 44 REMOTE TO 1U...

Page 45: ...C923 220 10 OPEN 1 2 3 4 5 6 7 8 9 10 11 A B C D E F G H SCHEMATIC DIAGRAMS 2 2 UD M31 45 45 SCHEMATIC DIAGRAMS 2 2 CD PWB UNIT SIGNAL LINE 5V_D1 R927 10K...