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21

BM-21/23

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

51

3-831-441-11 CUSHION, CABINET UPPER 10X7X0.5

52

3-345-648-81 SCREW (M1.4X3)

53

3-703-502-01 SCREW

54

3-375-114-61 SCREW

55

A-1138-332-A AUDIO BOARD, COMPLETE

56

3-909-950-01 SPRING, BATTERY COIL

57

X-3367-811-1 TERMINAL BOARD ASSY

*

58

X-3363-574-1 HOLDER ASSY, JACK

59

3-909-952-01 BUTTON (EJECT)

60

3-909-951-01 BUTTON (FF)

61

3-909-953-01 LID, BATTERY CASE

62

3-320-975-01 CUSHION (A), MICROPHONE

63

1-652-024-11 PC BOARD, FLEXIBLE

64

A-1139-877-A LCD BOARD, COMPLETE

65

X-3367-814-1 PLATE, LOCK ASSY

66

X-3367-813-1 CABINET (FRONT) ASSY

67

3-704-197-33 SCREW (M1.4X3.0), LOCKING

68

3-371-862-01 PLATE, ORNAMENTAL

*

70

1-537-724-11 CONDUCTIVE BOARD, CONNECTION

71

3-911-887-01 HOLDER, LCD

72

7-623-505-01 LUG, 2

73

3-891-132-00 SCREW (M1.7X2.0), SPECIAL HEAD

74

4-017-441-01 CUSHION (B)

*

75

3-914-611-01 HOLDER, MICROPHONE

LCD701 1-810-464-11 DISPLAY PANEL, LIQUID CRYSTAL

MIC901 1-542-080-11 MICROPHONE, BUILT-IN

5-2.

CHASSIS SECTION

54

74

58

59

57

60

62

75

65

72

73

66

67

67

68

63

71

61

56

54

52

53

51

51

51

55

not supplied

LCD701

MIC901

mechanism deck section-1
(MB-23-101)

54

64

 70 

Summary of Contents for BM-23

Page 1: ...gineering Corporation US Model BM 21 23 Canadian Model BM 23 AEP Model BM 21 23 UK Model BM 23 PORTABLE DICTATOR 9 959 363 12 2005H16 1 2005 08 Ver 1 1 2005 08 BM 21 23 Model Name Using Similar Mechanism NEW Tape Transport Mechanism Type MB 23 101 SPECIFICATIONS Photo BM 23 ...

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Page 27: ...CE MANUAL US Model BM 21 23 Canadian Model BM 23 AEP Model BM 21 23 UK Model BM 23 9 959 363 82 Ver 1 1 2005 08 BM 21 23 SUPPLEMENT 2 Subject Addition of BM 23 environmental measure model only for AEP model ...

Page 28: ...electrical adjustments diagrams exploded views and electrical parts list about BM 23 environmental measure model Refer to original service manual 9 959 363 1 for other information How to distingnish Before change 1 651 403 AUDIO BOARD SIDE A LCD BOARD SIDE A After change 1 868 269 Before change 1 651 429 After change 1 868 270 ...

Page 29: ...ASSEMBLY FLOW 1 3 CONTROL PANEL BLOCK ASSEMBLY Page 5 1 4 AUDIO BOARD Page 6 1 5 MECHANISM DECK MB 23 101 Page 7 1 6 HOLDER PANEL ASSEMBLY Page 7 1 2 CABINET REAR BLOCK ASSEMBLY Page 4 SET This set can be disassembled in the order shown below ...

Page 30: ...g two the four points 5 cabinet rear block assembly note When attaching the cabinet rear block assembly adjust the position of the three knobs indicated by arrows A and the switch of the AUDIO board 3 two screws BTP 1 7 10 2 screw M 1 4 5 0 A A AUDIO board Note Follow the disassembly procedure in the numerical order given ...

Page 31: ...the control panel block assembly in the direction of the arrow 7 control button assembly qd control panel block assembly 8 To attach the control panel block assembly align the three switch positions as shown qs screw M1 4 PRECAUTION DURING CONTROL PANEL BLOCK ASSEMBLY INSTALLATION control button assembly 5 control button assembly 0 claw ...

Page 32: ...3 4 battery case 5 three cabinet upper cushions 8 Remove solder from the seven points 7 Remove soldering from the five points 6 harnesses 3 Remove the soldering qa Remove the AUDIO board in the direction of arrow 9 flexible board CN101 12core 2 screw 1 7 x 2 5 ...

Page 33: ...k to stop and adjust the position of shaft A and part A of the lock plate assembly shaft A A 1 Remove the soldering 4 holder panel assembly 1 While pressing the button eject insert the two claws of the holder panel assembly into the holes indicated by arrows A 2 Move the battery coil spring in the direction of the arrow and secure it with the screw 3 two screws M1 4 1 6 A A claw claw 1 6 HOLDER PA...

Page 34: ...ng FWD CQ 102C 2 06 3 72 mN m 21 38 g cm 0 30 0 52 oz inch FWD 0 05 0 29 mN m Back Tension 0 5 3 g cm 0 01 0 04 oz inch REV CQ 102RC 2 06 3 72 mN m 21 38 g cm 0 30 0 52 oz inch REV 0 05 0 29 mN m Back Tension 0 5 3 g cm 0 01 0 04 oz inch FF CQ 201B more than 60 g cm REW more than 0 84 oz inch PRECAUTION 1 Power supply voltage 3V Test Tape Tape Speed 4 8cm s Adjustment Switch position TAPE SPEED Sw...

Page 35: ...r portion in FWD mode Adjust the RV602 so that the frequency counter reads 1 490 15 Hz 2 Play back WS 48A tape center portion in REV mode Confirm that the reading of frequency counter is within 2 5 from the reading in step 1 AUDIO BOARD SIDE B RV601 TAPE SPEED 4 8cm ADJ RV602 TAPE SPEED 2 4cm ADJ J102 set EAR 18 Ω test WS 48A 3 kHz 0 dB frequency counter ...

Page 36: ...lloscope Voltage variations may be noted due to normal production tolerances No mark PB LISTEN REC DICT Circled numbers refer to waveforms Signal path E PB LISTEN a REC DICT Note on Printed Wiring Board X parts extracted from the component side Y parts extracted from the conductor side Pattern from the side which enables seeing Caution Pattern face side Parts on the pattern face side seen from Sid...

Page 37: ...J VCC 3V BATT CN102 B Q109 Q110 SWITCH DRY BATTERY SIZE AA ICE DESIGNATION 2PCS 3 0V DC IN 3 0V Q1 Q4 MUTE SW Q715 INVERTER Q714 INVERTER Q516 LED CONTROL IC502 BATT VOLTAGE DET IC504 DC DC CONVERTOR Q606 Q608 VOR CONTROL Q517 Q518 BATT DET Q511 SWITCH S502 D507 ON OFF LOCK D503 VR101 EAR Q601 Q603 Q605 Q612 Q613 SERVO CONTROL Q503 Q513 Q515 PHOTO REFLECTOR DET Q522 SWITCH 1 3 2 4 TAPE SPEED ADJ 2...

Page 38: ...8 D 2 Q610 E 2 Q611 F 6 Q612 C 2 Q613 D 2 Q701 C 9 Q702 C 10 Q703 C 10 Ref No Location Q704 B 10 Q705 B 10 Q706 B 10 Q707 C 10 Q708 C 10 Q709 B 10 Q710 C 10 Q711 D 9 Ref No Location Q712 D 9 Q713 D 10 Q714 D 9 Q715 D 9 Uses unleaded solder IC502 IC503 IC103 IC102 IC501 IC101 IC601 IC701 IC504 E INDEX S503 CUE REVIEW ON OFF S501 FAST PB S601 LOCK S502 ON OFF TAPE SPEED 2 4cm 4 8cm S501 S401 BACK SP...

Page 39: ...1 C506 C101 C103 C105 C108 C502 C505 C520 JR204 SUPPLEMENT 2 Page 14 JR108 R116 JR106 C102 R503 C114 R502 R106 R107 R110 R109 R108 Q101 Q502 Q501 IC501 R504 C124 3 3k 47k 10k 330K 5 6k 330 39 1k 47k 1k 1 8k 330k 10k ERASE HEAD 1 1 2 2k 680 0 0 0039 4 7k 0 0056 0 0068 0 0033 0 015 0 0047 0 001 0 1 0 1 0 1 35V 33 4V 0 47 35V 47 4V 2 2 10V 3 3 4V 220 4V 0 0 22k 0 0 1 100k 1 100k 10k 1K 82 470 100 2SD...

Page 40: ...Q103 R122 C116 C141 C144 Q107 Q111 Q112 JR151 R139 R130 IC102 C137 C139 IC103 S102 Q109 C150 C146 C147 Q110 J102 SP501 S402 CN102 IC101 S501 R158 R131 C128 330k 470 10K 15A 10k 1k 3 3k 47k 270 100k 10k 4 7k 22 UN5215 180 47k 2 2k 39k 330 0 0 10k 100k 22k 22k 0 22 0 1k FB FB 390k 18 0 1 27k 47k 470K 2 2k 22 4V 100 4V 2 2 10V 1 0 01 0 0047 0 001 1 0 001 0 1 0 1 1 0 1 100p 0 1 0 22 35V 22 4V 4 7 10V ...

Page 41: ... R156 Q162 D161 D506 D504 IC504 Q517 Q518 C509 C528 Q519 Q505 Q504 Q523 S503 Q512 D505 IC502 C504 Q506 S502 CN101 2 1k 100k 68k 100k 0 1 100 1k 10k 680 100k 75k 2 2k 1M 15k 330k 330k 33k 33k 10k 270k 270 2 7k 1 2k 680 1 15k 0 22k 0 1 0 1 1000p 3300p 0 1 0 022 0 1 10 4V 33 4V 22 6 3V 22 6 3V 0 7 5k 10k 33k 11k MA111 TX 220 2SD1819A R TX 2SD1819A R TX 47 10k 10k XP1501 TXE 100 2SD1819A R TX MA111 TX...

Page 42: ...0 R615 R606 D507 Q511 C515 R1 R6 D502 R541 C522 IC503 R537 680 470 1 5k 120k 100k 10k 33k 68k 10k 100k 100k 10k 6 8k 330k 33k 22 10k 10k 27k 68k 33k 3 3k 33k 100k 100k MOTOR 10k 1M 1M 1M 100k 1k 4 7k 4 7k 4 7k 0 0033 0 0033 0 0033 0 4 7k 330k 8 2k 39k 39k 0 0 0 0 0 3 3k 4 7k 4 7k 68 10 4V 0 022 0 1 0 001 0 47 0 1 0 1 0 1 0 22 0 047 0 47 10 4V 22 4V 22 4V 22 4V 22 4V 1 16V 1 16V LB1979VS TLM E XN12...

Page 43: ... R716 C701 C702 X701 R730 Q710 R736 S701 Q712 Q713 Q711 Q714 D702 Q715 D701 D703 D704 100k 100k 330k 150k 100k 330k 150k 330k 100k 100k 150k 330k 330k BU2456 24 1M 1M 1M 1M 1M 1M 330k 100k 100k 0 015 0 015 1M 1M 470k 470k 2SD1819A R TX 2SB1218A R TX 2SD1819A R TX 2SD1819A R TX 2SD1819A R TX 2SB1218A R TX 2SD1819A R TX 2SB1218A R TX 2SD1819A R TX 0 033 470k 470k 100k 470k 470k 0 1 0 1 1MHz 100k 2SB...

Page 44: ... 5 GND IC502 MM1210 XFF FC GND VCC VCC FC WB VCC NC UOUT VOUT WOUT P GND VB UB GND TO CONTROL BLOCKS TO EACH BLOCKS N1 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 OSCILLATING CIRCUIT SPEED CONTROL REFERENCE VOLTAGE REFERENCE VOLTAGE CURRENT DETECT SPEED DETECT WAVEFORM DETECT COMMUTATION STARTING LOGIC SOFT SWITCH PRE DRIVER 17 IC60...

Page 45: ...o display 888 while it is displaying 2 Set the RAM of the counter to display 888 while the LTR is displayed 3 RESET IN will not be accepted during HALT LTR IN 1 The counter is stopped if it is displaying and L is displayed 2 Even if L is displayed the counter will operate 3 LTR IN will not be accepted during HALT 9 PHOTO I 1 When the tape is rotated while the tape recorder is operating photo detec...

Page 46: ...R 10X7X0 5 6 3 374 741 01 BRACKET SPEAKER CONCLUDE 7 3 909 973 01 PANEL CONTROL 8 X 3367 812 1 BUTTON ASSY CONTROL 9 3 909 955 01 KNOB HOLD 10 3 909 954 01 KNOB A 11 X 3367 816 1 CABINET REAR ASSY 12 3 909 957 01 KNOB VOR 13 3 366 890 51 SCREW M1 4X6 0 14 3 318 203 98 SCREW B1 7X11 TAPPING 15 3 365 623 01 KNOB DOLBY 16 3 347 746 11 COLLAR 17 3 365 630 02 SCREW M1 4 18 4 017 441 01 CUSHION B 19 3 9...

Page 47: ...NE 63 1 652 024 11 PC BOARD FLEXIBLE 64 A 1139 877 A LCD BOARD COMPLETE 65 X 3367 814 1 PLATE LOCK ASSY 66 X 3367 813 1 CABINET FRONT ASSY 67 3 704 197 33 SCREW M1 4X3 0 LOCKING 68 3 371 862 01 PLATE ORNAMENTAL 70 1 537 724 11 CONDUCTIVE BOARD CONNECTION 71 3 911 887 01 HOLDER LCD 72 7 623 505 01 LUG 2 73 3 891 132 00 SCREW M1 7X2 0 SPECIAL HEAD 74 4 017 441 01 CUSHION B 75 3 914 611 01 HOLDER MIC...

Page 48: ...PINCH ROLLER ASSY 116 3 924 682 01 BELT FR 117 3 701 437 51 WASHER 118 X 3369 923 1 WHEEL ASSY ZNDC CAPSTAN 119 3 371 822 01 SPRING PINCH LEVER TORSION 120 3 371 885 01 CUSHION MOTOR 121 3 831 441 11 CUSHION CABINET UPPER 10X7X0 5 123 3 371 869 01 BELT CAPSTAN 124 X 3367 821 2 CHASSIS HEAD ASSY 125 3 234 449 05 SCREW M1 4 126 3 374 119 02 SPRING GROUND TORSION HRP901 1 500 126 12 HEAD MAGNETIC REC...

Page 49: ... 371 872 01 SPRING FR TORSION 167 X 3367 818 1 TABLE ASSY FELT 168 3 910 004 01 SPRING TENSION 169 X 3363 568 1 LEVER ASSY IDLER 170 3 909 996 01 SHAFT CHASSIS D 171 3 915 376 01 SPRING LOCK LEAF 172 3 704 197 03 SCREW M1 4X1 6 LOCKING 173 3 909 986 02 HOLDER SPRING 174 3 910 003 01 SPRING TENSION 175 X 3367 819 8 CHASSIS ASSY 176 3 371 865 01 GEAR T REEL 177 3 914 860 01 STOPPER IDLER 178 3 911 3...

Page 50: ...9 1 107 826 11 CERAMIC CHIP 0 1uF 10 16V C131 1 131 862 91 TANTAL CHIP 47uF 20 4V C136 1 107 826 11 CERAMIC CHIP 0 1uF 10 16V C137 1 216 864 11 SHORT CHIP 0 C138 1 107 826 11 CERAMIC CHIP 0 1uF 10 16V C139 1 135 208 11 TANTAL CHIP 1uF 20 10V C140 1 104 847 11 TANTAL CHIP 22uF 20 4V C141 1 126 246 11 ELECT CHIP 220uF 20 4V C144 1 162 974 11 CERAMIC CHIP 0 01uF 50V C146 1 164 005 11 CERAMIC CHIP 0 4...

Page 51: ...HORT CHIP 0 JR205 1 216 864 11 SHORT CHIP 0 JR901 1 216 864 11 SHORT CHIP 0 COIL L501 1 412 064 11 INDUCTOR 100uH PHOTO INTERRUPTER PH501 8 719 017 54 DIODE NJ5161K F10 A TRANSISTOR Q1 8 729 402 32 TRANSISTOR 2SD1819A R TX Q2 8 729 402 55 TRANSISTOR 2SB1218A R TX Q3 8 729 402 32 TRANSISTOR 2SD1819A R TX Q4 8 729 403 17 TRANSISTOR XN1215 TX Q5 8 729 402 32 TRANSISTOR 2SD1819A R TX Q101 8 729 402 32...

Page 52: ...R139 1 216 845 11 METAL CHIP 100K 5 1 10W R140 1 216 837 11 METAL CHIP 22K 5 1 10W R141 1 216 852 11 METAL CHIP 390K 5 1 10W R142 1 216 841 11 METAL CHIP 47K 5 1 10W R144 1 216 841 11 METAL CHIP 47K 5 1 10W R145 1 216 814 11 METAL CHIP 270 5 1 10W R150 1 216 825 11 METAL CHIP 2 2K 5 1 10W R151 1 216 829 11 METAL CHIP 4 7K 5 1 10W R152 1 216 800 11 METAL CHIP 18 5 1 10W R153 1 216 833 11 METAL CHIP...

Page 53: ...0W VARIABLE RESISTOR RV601 1 238 089 11 RES ADJ CERMET 4 7K RV602 1 238 089 11 RES ADJ CERMET 4 7K SWITCH S101 1 572 039 11 SWITCH SLIDE LISTEN DCT STOP S102 1 771 091 21 SWITCH PUSH 1 KEY POWER S103 1 571 275 31 SWITCH SLIDE MIC SENS S401 1 771 091 21 SWITCH PUSH 1 KEY BACK SPACE S402 1 771 091 21 SWITCH PUSH 1 KEY FF BACK SPACE S501 1 570 397 11 SWITCH SLIDE CUE REVIEW S502 1 572 263 31 SWITCH S...

Page 54: ...ETAL CHIP 330K 5 1 10W R721 1 216 851 11 METAL CHIP 330K 5 1 10W R722 1 216 857 11 METAL CHIP 1M 5 1 10W R723 1 216 857 11 METAL CHIP 1M 5 1 10W R724 1 216 857 11 METAL CHIP 1M 5 1 10W R725 1 216 857 11 METAL CHIP 1M 5 1 10W R726 1 216 857 11 METAL CHIP 1M 5 1 10W R727 1 216 857 11 METAL CHIP 1M 5 1 10W R728 1 216 857 11 METAL CHIP 1M 5 1 10W R729 1 216 857 11 METAL CHIP 1M 5 1 10W R730 1 216 845 ...

Page 55: ...29 BM 21 23 MEMO ...

Page 56: ...he upper right on the revised page allows you to jump to the next revised page Ver Date Description of Revision 1 0 1994 02 New 1997 03 SUPPLEMENT 1 Suffix of board parts number of AUDIO board and LCD board are changed 1 1 2005 08 SUPPLEMENT 2 Addition of BM 23 environmental measure model only for AEP model ENG 05004 ...

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