Denon DR-M33HX Service Manual Download | Manualshive

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Summary of Contents for DR-M33HX

Page 1: ...DEMON Component SERVICE MANUAL STEREO CASSETTE TAPE DECK MODEL DR M33HX DR M44HX DR M44HX NIPPON COLUMBIA CO LTD ...

Page 2: ... 53 UNIT DR M44HX 37 WIRING DIAGRAM DR M44HX 28 SCHEMATIC DIAGRAM OF HX PRO UNIT DR M44HX 39 P W BOARD OF KU 5621 HX PRO UNIT SCHEMATIC DIAGRM OF AUDIO AMP UNIT DR M44HX 40 P W BOARD OF KU 5611 AUDIO AMP UNIT 41 SCHEMATIC DIAGRAM OF POWER AND LOGIC UNIT DR M44HX 42 P W BOARD OF KU 5212 POWER AND LOGIC UNIT 43 P W BOARD OF KU 5221 CONTROL UNIT 43 SCHEMATIC DIAGRAM OF FL COUNTER UNIT DR M44HX 44 P W...

Page 3: ... ohm 1 2 Kohm parallel pin cord x 2 50 60 Hz compatible voltage is shown on rating label 25W DR M44HX 24W DR M33HX 434 W X 115 H X 286 D mm DR M33HX 464 W X 115 H X 286 D mm DR M44HX 5 6 kg DR M33HX 6 3 kg DR M44HX Above specification and design styling are subject to change without notice for improvement Dolby noise reduction and HX PRO headroom extension manufactured under license from Dolby Lab...

Page 4: ...eject button 4 CASSETTE COMPARTMENT COVER If this compartment cover is not closed completely the deck s transport controls will remain inoperative 5 LINEAR TAPE COUNTER Tape passage is indicated digitally in minutes and seconds 6 DOLBY NR switches The left Dolby NR switch activates in or deactivates out the deck s Dolby noise reduction circuitry The right switch selects between Dolby B Type out or...

Page 5: ...j 15 PHONES jack For private music enjoyment without disturbing others or for monitoring a recording a set of headphones may be plugged in Impedance is from 8 to 1200 ohms 16 RESET button Operation of the button resets the counter to all zero 17 MEMORY STOP button During rewinding operations the tape will stop at the 0000 counter point automatically when this button is pressed in 18 AUTO TUNING sy...

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Page 8: ...or stop at the designated tape position from FF or REW since tape overrun occurs This is especially important when controlling the recording from the position where the automatic tuning was completed Erasing the previous music when making recordings after the automatic tuning is completed must be prevented For this the tape cuing is corrected after the automatic tuning is completed to control the ...

Page 9: ...nscrew the 3 screws 3x8 CBTS P Tight 301 which secure Front Escutchion Front Escutchion 221 is fixed to the Front Chassis 206 by 3 pins located at right left and below so that Front Escutchion may be removed when these pins are removed in order of right below and left as indicated by arrow 2 How to Remove the Mechanisms 1 Remove the top cover 240 and the front panel 233 Refer to section 1 2 Unscre...

Page 10: ...g the front chassis 206 and loosening the 2 hooks on the chassis holding the audio circuit board 203 the audio circuit board can be removed 5 How to Remove the FL Meter 1 Remove the top cover 240 Refer to section 1 2 Remove the connectors on the FL meter circuit board 205 3 Remove the 2 screws 307 3 x 8 CFTS S Tight which secure FL Meter Screw 310 3 x 10 CBS and washer 3W Then the FL Meter may be ...

Page 11: ...cuit board can be removed upwards Before replacing the pinch roller clean the tape contact surface of the pinch roller and the capstan shaft Most causes of poor tape transport can be traced to dirty pinch rollers and capstan shafts The right side pinch roller 23 can be taken out by remov ing spring 24 and slit washer 317 In the same manner the left side pinch roller 104 can be taken out by remov i...

Page 12: ...lel with the M 300 Tool Plate 2 If the Tilt Angle is adjusted more than once height Adjustment may slip Always make sure to check height adjustment If height has slipped adjust it again After adjustment fix screw Tilt Angle REC Yellow Orange ZJ White 3 Azimuth adjustments Play back the MTT 114 test tape Turn the azimuth adjustment nut and adjust so that A of the resurge wave form is maximum and B ...

Page 13: ...ts of the Capstan Shaft Thrust Play check and Adjustrnents of the Capstan Shaft 45 111 From the frorit bf The mechanism grasp the capstan shaft and move back and forth in the axis direction Check to rhake sure there are thrust play in the right side capstan shaft 45 Rotate and adjust capstan support 110 so that the range of the thrust play of the left side capstan shaft 111 is within 0 2mm 0 4mm A...

Page 14: ...magnetize the adjustment screwdriver 4 Unless instructed otherwise set the various controls as follows INPUT volume maximum OUTPUT LEVEL volume maximum DOLBY NR switch OFF MONITOR switch TAPE BIAS FINE ADJ Volume DR IVI33HX Center 1 Tape Transport Check Load the transport check cassette MC 112C In the oper ational mode illuminate the fixing guides of the R P HEAD with a lamp and cfiBek fe Wake sur...

Page 15: ...auSBCS esponse from the LINE OUT terminal meets the specification in the diagram below REC Amp Dolby C Back to Back Frequency Response Level 20dB from Dolby Monitor Source Dolby NR on C 6 Adjusting the Playback Section 1 Adjusting the playback level Play back the Dolby standard level test tape MTT 150 and adjust RT 101 L ch RT 201 R ch so that the LINE OUT voltage becomes 0 dB 0 775V 2 Adjusting t...

Page 16: ...he test tape DXM record a signal with an input level of 41 dB 1 kHz at the LINE IN terminal Play back this recording 4 Change the frequency of the input signal to 12 kHz record and playback adjust RT852 so that the 12 kHz signal output level gos within the limits of 0 dB 2 dB when compared to the 1 kHz signal output level 5 Load the tape DX3H record a signal with an input level of 41 dB 1 kHz at t...

Page 17: ...7N Dolby on C Level 20dB from Dolby ggaMB BasaaBBBBsan iBsaga IBBBIlIBBBiBaaHBHiaiQaHl iiaiaHaBBMiiBiBI BiHfliiaB aaaaBBBBBBBM 0 y HaiaBHiiiBB lIBBaBBaBHIIIMBI 3 1 1 1 ini 1 1 1 M MiMxr iiHaBBaMBiiiwn V 20 50 100 200 500 IK 2K 5K lOK 20K 9 Adjusting the CTS 1 Adjusting the CTS Amplifier Gain 1 Load the test tape HD7E 2 Connect the oscilloscope to the test point TP L of the CTS circuit board Set th...

Page 18: ...1024003 CK45F1H103Z 0 01 juF 50V Eiectrolytic Cl 09 118 2549014005 CE04W1HOR1M 0 1 mF 50V 130 137 209 218 230 237 Cl 17 129 217 229 2549014034 CE04W1HR15M 0 1 5mF 50V Cl 56 256 2544146004 CE04W1H010 ImF 50V Cl 57 257 307 2544132005 CE04W1C100 10 iF 16V C310 311 2544140000 CE04W1V4R7 A lfiF 35V C309 2544146004 CE04W1H010 IaF 50V Ref No Cl 25 225 Cl 06 108 116 123 124 128 136 140 142 206 208 216 223...

Page 19: ...00 LA6458DS 601 702 704 TR501 511 601 611 702 712 2730178022 2SC1740 S R D501 502 601 602 701 2760049008 IS2076 D503 504 603 604 2760001004 IN34A RESISTOR GROUP VR501 601 2116004024 V08QB202 2Kr2B CAPACITOR GROUP Ceramic C504 604 2531002009 CK45B1H471K 470PF 50V C505 605 2531004007 CK45B1H102K 0 001 mF 50V C701 702 2531153000 CK99B1H102MP4 0 001 jiiF 50V Electrolytic C705 707 2544127007 CE04W0J221...

Page 20: ...C 3 CN8 2045408018 7P El CON ZD10 2760236073 HZ5B 1 CN7 2045408034 7P El CON ZD13 2760218062 HZ 9A 1 CN12 2041639001 6P El CON ZD12 2760218046 HZ9B 1 CNl 2039632023 5P El CON RESISTOR GROUP CN6 2050170001 12P BOARD BASE R2 2442028017 RD14B2E330JFRF 33n VaW CN9 13 2035622024 4P MINI CON PIN R48 2440079026 RS14B3D270JNBF 27n 2W 2129188005 SLIDE SWITCH 2129136028 POWER SW 5 c i l R17 2410163001 RD14B...

Page 21: ...NNE PIN CN408 2035622024 4P MINI CONNE PIN CN409 2032075001 2P CONNE BASE CN410 2031638096 2P El CON WITH WIRE L401 2358014034 INDUCTOR KU 5620 KU 5621 HX PRO UNIT Ref No Part No Part Name Remarks SEMICONDUCTOR GROUP IC851 2630284003 M5219P IC801 802 2630189001 M5218L TR801 802 2730311009 2SC1741 R TR851 852 2730245023 2SC2603 E F TR853 2710101006 2SA933 R1 TR854 856 2730178022 2SC1740 R S D801 80...

Page 22: ...No Part No Part Name Remarks 236 1128112T09 VOL KNOB A BK 1128112112 VOL KNOB A 237 1128113108 VOL KNOB B BK 1128113111 VOL KNOB B 238 1128114000 VOL KNOB C BK 1128114013 VOL KNOB C 239 1038253103 C WINDOW ASS Y BK 1038253129 C WINDOW ASS Y 240 1028319251 TOP COVER BK 1028319248 TOP COVER 1028319277 TOP COVER BK EA only 1028319235 TOP COVER EA only 241 4428055002 P W B SUPPORT 242 4428141107 METER...

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Page 24: ... 03 03 o s m o I z w s a 03 c z m m m m m a 2 r c 2 i m s c c S 5 C f 3 C f 1 _ t J M d S E 5 Q 3 0 JT S C 0 Q lO o 3 O O m CO CO O 2 m CO O 33 o c 0 CO m 3 O c z H PARTS LIST OF MECHANISM 83 UNIT DR M33HX ...

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Page 26: ...WIRING DIAGRAM PR M33HX ...

Page 27: ...SCHEMATIC DIAGRAM OF HX PRO UNIT DR M33HX ...

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Page 31: ...P W BOARD OF KU 5211 POWER AND LOGIC UNIT ...

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Page 33: ... COOO J OTOlScONJ 0 00 J05U CONJ OCDOO JO U1 t C ts C 01 P CO N O CD 00 0 0 O 0 0 0 2 2 O Cj CD 0 sj Sj fsj i N5 CO oi oi t3 0TJT3 0 T5 D fOCO2ZZ 0 0 0 CO T3 D T5 D 0 TJ CO CO 00 M O ii Zi o Q 0 3 3 3 m O C CO m c H m n r r CO Sill a a a a 00 CD 00 00 00 a a a a M ot w w T3 2 2 S U m 0 Q 0 Q o O TJ T3 a o 00 Q DDCDCO JDDU XU i 3 U Q D to o CD a a a CO GO a a o Si ii Q 3 c CO m c H o o o S rr O 3 f...

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Page 35: ... CO o o H 1 H X X 2 H X X CO H H X X z Z m 03 OD CD O 03 03 CO X X 7 7 H H X V O c c z c c 03 o o Z Z m m H H CO H H r r o o CO CO O o H H X H H X 03 03 03 OD O o z o O O O O c c _ C c D z z Tl z z H t H H O m H _ H O O X 03 03 o o X X z z m m O O 00 03 03 03 33 o Q O z S lESfe O z rn t rn r w 5a ii i ti m 33 WJifflftSbf te ills o a 1 03 7 X tc 3 CO CJl m rn m X C 7s V 3 c c cn 3 i V Of 3 03 7s n ...

Page 36: ...m 00 i ...

Page 37: ...012 Reel 22 k OJ JL 1 1 1 GM lO O Q QQ QT g 5OTS 5Wj_l 1 3 Ts C I OI D I X 0 3 O TI 9 3 S Ol Xo o_ T oS I R802 T ES C855 5600 p IOOv OqO RBOl O Ra06 R805 UK _1 2 n zi I 0 J tmS o SS CS06 oo I200P I00V C805 1200p IOOv 3 Reo8 390 k R807 390 k TZP ceio loop C809 I0_0p 1 J_ to f si loro W TO oo a W OI 07 01 jiO NJ CJ W 0 ii 5 o 2 ...

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Page 40: ...1 i I m Z09 R3S C28 1 lOOIc 47 3V ro ro I K J w w 33 J2 n o Ml 2 SiBiliiii SCHEMATIC DIAGRAM OF POWER AND LOGIC UNIT DR M44HX ...

Page 41: ...P W BOARD OF KU 5212 POWER AND LOGIC UNIT ...

Page 42: ...all be 1 4W unless otherwise specified and the unit is n The unit of capacitor is pF P is pF unless otherwise specified This circuit diagram shows the basic circuit It is subject to change for the purpose of improvement ...

Page 43: ... I I A I to O r 5 I w r r r o D 0 d Q Q Q CD DO OD Q Q Q O v v vt o o O Q Q Q Q ST Q wj a a CD DO a a D D o o Q Q 9 c U D D m S O 33 V H O 0 a o 0 TJ o D D 0 3 3 a o 5 O CD t CO a 05050 CDCDCDCDCJ1CJlCDCJl COrO_ 0 OCO 005CD41 COtO 39 3 CU O 3 Z Q 3 D 0 TJ O to O o w w 2 Z Z p 7 CD O D D 0 0 3 0 D D CO O D D D D D OCO mfrtf iOs Tn nTi jQTi CO 00 t o o CO 3 3 33 m o 0 C CD m S C H m a I I I 9 Q c I ...

Page 44: ...e specified and the unit is n The unit of capacitor is pF P is pF unless otherwise specified This circuit diagram shows the basic circuit It is subject to change for the purpose of improvement 05 I m_I_a_I_O SCHEMATIC DIAGRAM OF CTS UNIT DR M44HX ...

Page 45: ...00 P W BOARD OF KU 0451 CTS UNIT ...

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Page 48: ...NIPPON COLUMBIA CO LTD No 14 14 4 CHOME AKASAKA MINATO KU TOKYO JAPAN TEL 03 584 8111 TLX JAPANOLA J22591 CABLE NIPPON COLUMBIA TOKYO 85 8 Printed in Japan ...

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