manualshive.com logo in svg

Sony M-455 - Microcassette Recorder, Service Manual, Page: 4 / 18

Share
Download
Sony M-455 - Microcassette Recorder Service Manual Download Page 4

4

M-450/455

SECTION 2

DISASSEMBLY

2-1. CASSETTE HOLDER ASSY

2-2. CABINET (REAR)

z

 CAUTIONS DURING ASSEMBLY

Align these switches and knobs
S601 

t

 Knob (pause)

Lever (F/R) 

t 

Knob (FR)

Cassette holder ASSY 

Set

Cabinet (rear)

Cabinet (front)

Main board,  Mechanism deck

Head, magnetic (HRPE901)

Motor (M901)

r

 The equipment can be removed using the following procedure.

Cassette holder ASSY

2

 

3

 

1

 Eject

4

 Claws

Cabinet (front)

4

 

1

 

Lever (F/R)

Lid, battery case

Knob (FR)

Knob (pause)

Cabinet (rear)

S601

2

 Screw

    (B1.7 

× 

5)

3

 Four screws

    (1.7 

× 

16)

5

 Claw

6

Summary of Contents for M-455 - Microcassette Recorder

Page 1: ...monaural Speaker Approx 3 6 cm 1 17 16 in dia Tape speed 2 4 cm s 15 16 ips 1 2 cm s 15 32 ips Frequency range 300 4 000 Hz with TAPE SPEED switch at 2 4 cm s Output Earphone jack minijack for 8 300 Ω earphone Power output at 10 harmonic distortion 250 mW Power requirements 3 V DC batteries R6 size AA 2 External DC 3V power sources Dimensions w h d Approx 62 2 119 1 25 4 mm 2 1 2 4 3 4 1 in incl p...

Page 2: ...citor may be dam aged by heat TABLE OF CONTENTS Specifications 1 1 GENERAL 3 2 DISASSEMBLY 2 1 Cassette Holder Asssy 4 2 2 Cabinet Rear 4 2 3 Cabinet Front 5 2 4 Main Board Mechanism Deck 5 2 5 Head Magnetic HRPE901 6 2 6 Motor M901 6 3 ADJUSTMENTS 3 1 Mechanical Adjustments 7 3 2 Electrical Adjustments 7 4 DIAGRAMS 4 1 Block Diagrams 9 4 2 Printed Wiring Boards 10 4 3 Schematic Diagram 11 5 EXPLO...

Page 3: ...3 M 450 455 SECTION 1 GENERAL This section is extracted from instruction manual ...

Page 4: ...er F R t Knob FR Cassette holder ASSY Set Cabinet rear Cabinet front Main board Mechanism deck Head magnetic HRPE901 Motor M901 r The equipment can be removed using the following procedure Cassette holder ASSY 2 3 1 Eject 4 Claws Cabinet front 4 1 Lever F R Lid battery case Knob FR Knob pause Cabinet rear S601 2 Screw B1 7 5 3 Four screws 1 7 16 5 Claw 6 ...

Page 5: ... Main board Mechanism deck 1 Screw 3 Remove solder four places 1 Screw 2 Remove solder four places 4 Head flexible board z NOTE DURING ASSEMBLY Align S902 and knob tape speed Knob tape speed Cabinet front 2 Mic case 1 Remove solder two places To speaker 3 S902 ...

Page 6: ...1 4 special head 2 arm pinch roller assy 5 head magnetic HRPE901 2 5 HEAD MAGNETIC HRPE901 2 6 MOTOR M901 belt flywheel belt counter tape How to apply the belts belt flywheel M901 flywheel assy 1 3 Motor M901 Mechanism deck 2 Two screws Ver 1 2 ...

Page 7: ...HANICAL ADJUSTMENTS PRECAUTION 1 Before adjusting clean the following parts with a piece of cot ton moistened with alcohol record playback erase head pinch roller rubber belt capstan 2 Demagnetize the record playback erase head using a head de magnetizer 3 Do not use a magnetized screwdriver for adjustments 4 After adjusting apply screw locking compound to the adjusted parts 5 Unless specified oth...

Page 8: ... WS 12 3kHz 10dB speed checker or frequency counter earphone jack 8Ω Adjustment Value Adjustment Speed Frequency counter Part RV602 2 4cm s 2 880 3 120Hz RV601 1 2cm s 2 850 3 150Hz Frequency difference between the beginning and the end of the tape should be within 0 5 2 4cm s 15Hz 1 2cm s 15Hz Adjustment Location Back view RV602 2 4cm RV601 1 2cm speed adjustable resistors Plate blind ...

Page 9: ... S601 OFF PAUSE ERASE HEAD VCC B U OUT V OUT W OUT VCC U V W RV601 TAPE SPEED 1 2cm RV601 VCC VCC VREF IN S S S902 1 2 TAPE SPEED 1 2cm 2 4cm RV602 TAPE SPEED 2 4cm S902 2 2 TAPE SPEED 2 4cm 1 2cm PRE AMP IC101 1 2 BTL POWER AMP IC101 2 2 VREF RF IN PRE OUT RF OUT VCC PRE IN PRE IN POW INA POW INA POW INB POW INB POW OUTA PWB OUTB ALC IN Q103 MUTE MOTOR DRIVER IC601 B S102 POWER J101 EAR SP901 SPE...

Page 10: ...3 R114 R115 R116 R119 R120 R122 R124 R127 C112 C113 C114 C115 C116 C105 C108 C117 C101 R108 R105 C102 R104 R102 R136 C134 Q106 R117 R118 R103 R123 RV601 C135 C109 R301 R302 C144 JC302 JC156 JC604 JC605 JC157 JC301 JC101 JC102 JC159 JC158 JC105 JC103 JC108 JC104 JC138 JC140 JC139 JC137 JC133 JC109 JC134 JC136 JC135 JC142 JC141 JC153 JC602 JC155 JC154 JC143 JC603 JC601 JC131 JC132 JC110 C119 JC111 J...

Page 11: ...6 R608 R607 JC602 C607 R609 Q104 SP901 R137 W901 W902 S902 1 2 MIC901 Q101 Q102 IC101 THP601 S101 3 4 L 34HD 220 1k 1k 0 047 0 047 1M 0 047 0 047 1k 10k 4 7k 4 7k 0 22 4 7k 0 047 10k 1k 0 2 2 100k 0 47 LB1979V UN5114 10k 2SC4213 10 10V 4 7k 10k 2200p 4 7k 1000p 10 10V 0 01 0 01 47 6 3V 1000p 47k 47 4V 100 22 22 1000p 220 4V 1 2 2M 10 10V 0 01 2 2 100 6 3V 4 7 0 1 2 2k 0 470 0 47 220 10k 0 22 0 22 ...

Page 12: ...to ground under no signal conditions no mark PLAY REC Voltages are taken with a VOM Input impedance 10MΩ Voltage variations may be noted due to normal production tole ances Signal path E PB a REC FC GND VCC VCC FC WB VCC NC UOUT VOUT WOUT P GND VB UB GND TO CONTROL BLOCKS TO EACH BLOCKS RI OUT VSP IN VREF S S COM OSC 7 5 4 3 1 2 6 8 9 10 11 12 13 14 15 16 18 20 19 STARTING DETECT POWER SUPPLY BIAS...

Page 13: ... 450 1E 1 3 236 700 71 CABINET REAR 455 1E 2 3 035 255 01 SCREW 1 7X16 450 2 3 035 255 11 SCREW 1 7X16 455 3 3 358 363 41 PLATE BLIND 450 3 3 358 363 71 PLATE BLIND 455 4 3 236 708 01 KNOB PAUSE 455 4 3 236 708 11 KNOB PAUSE 450 Hardware mark list and accessories and packing materials are given in the last of this parts list 5 3 236 707 01 KNOB FR 455 5 3 236 707 11 KNOB FR 450 6 3 318 203 71 SCRE...

Page 14: ...0 3 037 193 01 CUSHION SP 61 3 236 717 01 TERMINAL BATTERY 62 3 236 699 21 CABINET FRONT 450 62 3 236 699 31 CABINET FRONT 455 63 X 3381 673 1 HOLDER ASSY CASSETTE 450 63 X 3381 674 1 HOLDER ASSY CASSETTE 455 64 3 238 573 01 KNOB TAPE SPEED 455 64 3 238 573 11 KNOB TAPE SPEED 450 65 3 236 713 01 CUSHION MICROPHONE 66 3 039 027 01 SPACER MIC 67 3 236 712 01 CASE MICROPHONE 68 3 037 192 01 SPACER MI...

Page 15: ... 420 11 BELT 121 X 3376 224 1 LEVER REC ASSY 122 3 029 641 01 SPRING TORSION 123 3 028 957 01 SPRING CAM GEAR TENSION 124 3 028 966 03 GEAR S OFF OW CAM 125 X 3376 230 1 LIMITTER ASSY 126 3 028 955 01 SPRING LOCK TENSION 127 X 3377 535 4 LEVER LOCK ASSY 128 4 992 239 01 WASHER A 129 3 028 967 01 LEVER PAUSE RELEASE 130 3 028 954 01 SPRING SW LEVER TENSION 131 3 321 813 71 WASHER COTTER POLYETHYLEN...

Page 16: ...0 0022uF 10 50V C140 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C141 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C142 1 104 851 11 TANTAL CHIP 10uF 20 10V C143 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C144 1 110 569 11 TANTAL CHIP 47uF 20 6 3V C145 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C146 1 104 400 21 ELECT 47uF 20 4V C146 1 126 154 11 ELECT 47uF 20 6 3V C147 1 104 851 11 TANTAL CHIP 10uF 20 10V C15...

Page 17: ...793 11 RES CHIP 4 7 5 1 10W R137 1 216 825 11 METAL CHIP 2 2K 5 1 16W R138 1 216 789 11 METAL CHIP 2 2 5 1 16W R139 1 216 861 11 METAL CHIP 2 2M 5 1 16W R140 1 216 833 11 METAL CHIP 10K 5 1 16W R141 1 216 829 11 METAL CHIP 4 7K 5 1 16W R142 1 216 841 11 METAL CHIP 47K 5 1 16W R143 1 216 833 11 METAL CHIP 10K 5 1 16W R144 1 216 829 11 METAL CHIP 4 7K 5 1 16W R151 1 216 801 11 METAL CHIP 22 5 1 16W ...

Page 18: ...rsion at the upper right on the revised page allows you to jump to the next revised page Ver Date Description of Revision 1 0 2002 02 New 1 1 2004 02 Addition of New type mechanism deck SPM 03066 1 2 2004 05 Addition of How to recognize the mechanism deck Correction of M901 part No and illustration SPM 04042 ...

Reviews:

No comments