Denon DR-M3QHX Service Manual Download Page 1 | Manualshive

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Summary of Contents for DR-M3QHX

Page 1: ...Hi Fi Component DENON SERVICE MANUAL STEREO CASSETTE TAPE DECK MODEL DR M3QHX NIPPON COLUMBIA CO LTD...

Page 2: ...Headphone Accessories Power supply Power consumption Dimensions Weight Vertical tape loading 4 track 2 channel stereo cassette tape deck SF Record Playback combination head x 1 Erase head Ferrite x 1...

Page 3: ...LINE IN CH BALANCE VR303 26 IC102 TEA0665 INPUT VR VR304 ENCOOER SLOCK BLOCK DIAGRAM...

Page 4: ...LEVEL DIAGRAM PLAYBACK SYSTEM TCC 130 400Hz DOLBY B Typ RECORDING SYSTEM NPUT FREQUENCY 400Hz DOLBY NR SYSTEM 0dB 0 775V 5...

Page 5: ...tween the left and right channels Turn it counterclock wise to reduce the right channel s level and clockwise to reduce the left channel s Usually put the knob at the center click position 10 PHONES j...

Page 6: ...the 3 upper screws 3x8 CFTS S tight 307 from the front panel 233 and the 3 lower screws 3x8 CBTS P tight 2 How to Remove the Mechanisms 1 Remove the top cover 240 and the front panel 233 Refer to sect...

Page 7: ...Refer to section 1 2 Remove the angle 210 Refer to section 2 3 Remove the meter holder 242 Refer to section 4 4 Remove the front escuchion 206 5 Remove the volume plate 245 Refer to section 6 6 Remov...

Page 8: ...01 Tool Plate on the Mechanism Unit and then place the THG 801 Tool Grip on the R P Head and check the Tilt Angle between THG 801 Tool Plate and THG 801 Tool Grip If the THG 801 Tool Grip is tilting t...

Page 9: ...luminate the fixing guides of the R P HEAD with a lamp and check to make sure the tape edge does not come in contact with the tape guide section The tape transport is the most important element in de...

Page 10: ...se Tape H07E Dolby off Level 20dB from Dolby 16 2 Adjusting the record piayback levels 1 Load the test tape HD7E C 60 and record a signal of 1kHz 38 dB 2 Adjust RT102 L ch RT202 R ch so that the outpu...

Page 11: ...011008 104 204 LI 03 203 2320102000 LI 05 205 2350020000 LI 06 206 2328044005 LI 07 207 2390010009 L301 T301 S301 J301 J302 CN301 CN302 CN303 2390010009 2350019011 2398024000 2124611001 2048047007 204...

Page 12: ...B tei ipi HpKj m 4 REMOTE SENS P ASS Y 241 242 243 244 245 246 247 248 250 251 252 253 254 255 j 257 258 A 259 A260 A 261 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 1030919102 10...

Page 13: ...r i EXPLODED VIEW OF CABINET AND CHASSIS GROUP...

Page 14: ...r EXPLODED VIEW OF MECHANISM VM861 UNIT...

Page 15: ...102 CORD HOLDER 12 4428165002 SLIDER SPACER 13 4638842005 SPRING 14 2124621004 LEAF SWITCH 20 4338224208 STOPPER 21 4610154083 CUSHION 23 4338194105 P ROLLER ARM ASS Y 24 4638231108 SPRING 25 42184000...

Page 16: ...SCHEMATIC DIAGRAM OF AUDIO AMP UNIT A t B C 4 D c E This circuit diagram shows the basic circuit It is subject to j change for the purpose of improvement j I 24...

Page 17: ...agram shows the basic circuit It is subject to change for the purpose of improvement Parts marked with ZiA are of importance in respect to the safety use the specified type without fail POWER TRANSFOR...

Page 18: ...I P W BOARD OF KU 5881 AUDIO AMP UNIT 4 1 5 1 6 l 7 8 4 25 4...

Page 19: ......

Page 20: ...L5 P L6 Xl rnp X2 5 2G UJ 1 NC id P h 0 C 13 P g 3G cn UJ P f i mmm P e z 8 S4G 0 Snc T K P d UJ I S 5G UJ 5 p c LL P b Sp a TO CONTROL PWB ASS Y Note Resistance shall be 1 4W unless otherwise specif...

Page 21: ...to t 8 1 3 12 1 10 9 l kEk 3j rr_ r L_ m ftft 1 2 3 A n n 7 OCT OND 20ff IOff IOff 7 MB 3ff OUT BA6146 HD74HC238 TEA0665 JIPD554C 136 Transistors 1 1 OUTPUT 2 GND u B m IIP EC m o 00 r 3 3 INPUT 2SA9...

Page 22: ...87 5 J REMOTE SENS I P ASS Y AC3 AC4 KU 587 3 POWER SW PWB ASS Y AC2 AC LINE IN AC5 MARK W303 C GND CN303 LINE MUTE BIAS CONT REC MUTE PLAY MUTE CHROME SENS METAL SENS 9V GND 9V KU 588 0 AUDIO PWB ASS...

Page 23: ...DENON NIPPON COLUMBIA CO LTD No 14 14 4 CHOME AKASAKA C MINATO KU TOKYO JAPAN TEL 03 584 8111 TLX JAPANOLA J22591 CABLE NIPPON COLUMBIA TOKYO Printed in Japan 609 IP 0048...

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