Otari MX-5050 Mini Pro

MX-5050B Maintenance Manual — Digital Edition · Part 6 · scan pages 65-100

Parts Lists and Schematics

When ordering parts, the part number must be specified. Components which do not have part numbers should be specified by a reference number.

Concerning components on the printed circuit boards, those which have part numbers should be specified by their respective part number, and those which do not have part numbers should be specified either by their assembly name or reference numbers.

NOTE

  1. The part numbers in parenthesis are included in the assembly numbers indicated in the "Notes" next to those "Parts No.", therefore, those parts must be specified by the assembly numbers.

  2. There are several versions of the MX-5050B depending on the capstan motor type, the tape speeds pair, and the track format, therefore, those parts may differ depending on each version.

    Since the exploded views in this manual show the MX-5050B-2HD and 2LD as standard, confirm a required part number for other versions by the appropriate parts list.

PARTS LIST 1 CASE PARTS↑ TOP

Ref. No.DescriptionPart No.Notes
1-1Foot, RearCY4013
1-2Cover Ass'y, RearK102903Ass'y K102903
1-3Felt, A. Rear Cover(PZ1B029)Ass'y K102903
1-4Felt, B. Rear Cover(PZ1B030)Ass'y K102903
1-5Rubber, sheet Rear Cover(PZ1C038)Ass'y K102903
1-6Rubber, Block Rear Cover(PZ1C023)Ass'y K102903
1-7Escutcheon, VentilateCY5001
1-8Bracket, B. VentilateK102908
1-9Board, SideK102902
1-10Washer, Trim, Side BoardKZ6C016
1-11Grip, Side BoardCY1004
1-12Bracket, A. VentilateK102907
1-13Angle, L, Bottom CoverK102909
1-14Angle, R, Bottom CoverK102910
1-15Cover, BottomK102906
1-16Foot, BottomCY4011-A

EXPLODED VIEW 1 CASE PARTS: the cabinet around the transport: the rear cover assembly with its felts and rubbers, drawn again in an inset, the ventilation escutcheons and brackets, the side boards with their trim washers and grips, and the bottom cover with its angles and feet⤢ zoomEXPLODED VIEW 1 CASE PARTS: the cabinet around the transport: the rear cover assembly with its felts and rubbers, drawn again in an inset, the ventilation escutcheons and brackets, the side boards with their trim washers and grips, and the bottom cover with its angles and feet

PARTS LIST 2 PINCH ROLLER and LIFTER ASSEMBLY↑ TOP

Ref. No.DescriptionPart No.Notes
2-1Angle, Spring HookKZ3A023
2-2Spring, Roller ArmGS1011
2-3Arm, Pinch RollerKP4B002
2-4Retaining Ring, E Type ø4F754
2-5Nuts, M4, RodF517-4
2-6Spring, Pressure, RodGS2003
2-7Washer, Spherical, RodKP0G004
2-8Washer, Fiber ø5F526-5
2-9Retaining Ring, E Type ø3F753
2-10Cushion,SolenoidPZ1C021
2-11Rod, SolenoidKZ6A022
2-12Retaining Ring E Type ø2F752
2-13Limit Stop. SolenoidKZ2A016
2-14Solenoid, Pinch RollerGP1B06
2-15Pin SolenoidKZ5A003
2-16Shaft, Pinch RollerKP0B010
2-17Washer, Polyslider. ø6x0.25F523-6
2-18Pinch Roller,KP0A007
2-19Cap, Pinch RollerKP0C012
2-20Shaft, Roller ArmKP4B001
2-21Spring, Lifter ArmGS1028-A
2-22Arm, Lifter AKR0B005
2-23Arm, Lifter BKR0B006
2-24Tube, Vinyl, Lifter ArmKR4F001
2-25Shaft, Lifter ArmKR4B001
2-26Arm, Cue(KR4B008)Ass'y KR-4F-A
2-27Felt, Cushion, Cue Arm,(PZ1B009)Ass'y KR-4F-A
2-28Shaft, Cue ArmKR4B007
2-29Felt, Blind, Cue ArmPZ1B001
2-30Catch, Cue ArmCY3001
2-31Plate, Guide, Cue ArmKR4B011
2-32Knob, Cue ArmKR4F002
2-33Escution, CueKR4B006

EXPLODED VIEW 2 PINCH ROLLER and LIFTER ASSEMBLY: the pinch roller arm with its pressure rod, springs and solenoid, the pinch roller on its shaft with polyslider washers and cap, the tape lifter arms, and the cue arm with its felts, knob, guide plate and escutcheon⤢ zoomEXPLODED VIEW 2 PINCH ROLLER and LIFTER ASSEMBLY: the pinch roller arm with its pressure rod, springs and solenoid, the pinch roller on its shaft with polyslider washers and cap, the tape lifter arms, and the cue arm with its felts, knob, guide plate and escutcheon

PARTS LIST 3 CAPSTAN ASSEMBLY (DC SERVO VERSION)↑ TOP

Ref. No.DescriptionPart No.Notes
3-1Bracket, R, Capstan P.C, BoardKC4H004
3-2Bracket, L, Capstan P.C, BoardKC4H003
3-3Motor, CapstanMR5A008
3-4Plate, Capstan MotorKC4H001
3-5Stud, Capstan MotorKZ7B220
3-6Resistor, Var. 500ΩRV252009
3-7Bracket, Resistor, VarKC4H002
3-8Felt, PotentiometerPZ1B037
3-9Spacer, P.C, Board LED(A)KZ7A823
3-10P.C, Board Ass'y, LED,(A)PB-81GAss'y PB-81G
3-11Felt, P.C, Board LED(A)(PZ1B038)Ass'y PB-81G
3-12Escutcheon, Pitch Control.KC4H005
3-13Cap, Capstan MotorKC0B011
3-14Knob, Pitch ControlKN1024

EXPLODED VIEW 3 CAPSTAN ASSEMBLY (DC SERVO VERSION): the dc servo capstan motor on its plate and studs, the capstan p.c. board brackets, the pitch control potentiometer with its bracket, escutcheon and knob, the LED board (A), and the capstan motor cap⤢ zoomEXPLODED VIEW 3 CAPSTAN ASSEMBLY (DC SERVO VERSION): the dc servo capstan motor on its plate and studs, the capstan p.c. board brackets, the pitch control potentiometer with its bracket, escutcheon and knob, the LED board (A), and the capstan motor cap

PARTS LIST 4 CAPSTAN ASSEMBLY (HYSTERESIS VERSION)↑ TOP

Ref. No.DescriptionPart No.Notes
4-1Cap, CapstanKC0B011
4-2Felt, CapstanPZ1B007
4-3Holder, BearingKC4B001
4-4Washer, CapstanKZ6C014or. KZ6C026 adjust
4-5Flywheel, CapstanKC0A020
4-6Belt, Flat, CapstanBE2M128ALow Speed
4-6Belt, Flat, CapstanBE2M140High Speed
4-7Pulley, Capstan MotorKC0D019Low Speed 60HZ
4-7Pulley, Capstan MotorKC0D011High Speed 60HZ
4-7Pulley, Capstan MotorKC0D018Low Speed 50HZ
4-7Pulley, Capstan MotorKC0D010High Speed 50HZ
4-8Stud, Capstan FlywheelKZ7B203
4-9Plate, Capstan FlywheelKC4B004
4-10Stud, Capstan MotorKZ7B204
4-11Plate, Shield, MotorKC4B006
4-12Plate, Capstan MotorKC4B005
4-13Capacitor, Capstan MotorCZ10011W2+0.5µ
4-14P.C. Board, CapacitorPB9A026
4-15Motor, CapstanMR2F010

EXPLODED VIEW 4 CAPSTAN ASSEMBLY (HYSTERESIS VERSION): the capstan cap, felt and bearing holder, the flywheel and flat belt, the motor pulley, the flywheel, shield and motor plates on their studs, and the hysteresis synchronous motor with its capacitor and capacitor board⤢ zoomEXPLODED VIEW 4 CAPSTAN ASSEMBLY (HYSTERESIS VERSION): the capstan cap, felt and bearing holder, the flywheel and flat belt, the motor pulley, the flywheel, shield and motor plates on their studs, and the hysteresis synchronous motor with its capacitor and capacitor board

PARTS LIST 5 TENSION ARM ASSEMBLY (A) SUP.↑ TOP

Ref. No.DescriptionPart No.Notes
5-1Cap. ArmKA0C005
5-2Arm, TensionKA0A017
5-3Guide, Tension ArmKG4D007
5-4Shaft, ArmKA4J001
5-5Washer, Polyslider ø5xt0.5F524-5
5-6Holder, Arm.KA0B008
5-7Plate, Spring HookKZ3A024
5-7Nat, HolderKZ6D004
5-9Drum, A, Spring RetainingKA0E004
5-10Spring, Tension ArmGS1025
5-11Angle, Limit StopKA0H004

PARTS LIST 6 TENSION ARM ASSEMBLY (B) TAKE UP↑ TOP

Ref. No.DescriptionPart No.Notes
6-1Cap, ArmKA0C005
6-2Arm, TensionKA0A017
6-3Guide, Tension ArmKG4D007
6-4Shaft, ArmKA4J001
6-5Washer, Polyslider ø5xt0.5F524-5
6-6Holder, ArmKA0B008
6-7Angle, Spring HookKZ3A023
6-8Bracket, Magnet(KZ3A069)Ass'y KA-4K-A
6-9Magnet(GP8A01)Ass'y KA-4K-A
6-10Stud,KZ7A163
6-11Drum, B, Spring RetainingKA0E005
6-12Felt, Switch Actuate(PZ1B036)Ass'y KA-4K-B
6-13Weight(KA4K002)Ass'y KA-4K-B
6-14Arm, Switch Actuate(KZ4K001)Ass'y KA-4K-B
6-15Cushion, Switch Actuate(PZ1C007)Ass'y KA-4K-B
6-16Rubber, Switch Actuate(PZ1C037)Ass'y KA-4K-B
6-17Spring, Tension ArmGS1048
6-18Switch, MicroWH510011

PARTS LIST 7 GUIDE ROLLER ASSEMBLY↑ TOP

Ref. No.DescriptionPart No.Notes
7-1Cap, RollerGR0A013
7-2Washer, Polyslider ø6xt0.5F524-6
7-3Shaft, RollerGR4H001
7-4RollerGR4H002
7-5Base, RollerGR4G004

EXPLODED VIEW 5 TENSION ARM ASSEMBLY (A) SUP., EXPLODED VIEW 6 TENSION ARM ASSEMBLY (B) TAKE UP and EXPLODED VIEW 7 GUIDE ROLLER ASSEMBLY: the supply and take-up tension arms with their guides, shafts, holders, springs and spring-retaining drums, the take-up arm's magnet, switch actuator and microswitch, and the guide roller stack, printed together on one page⤢ zoomEXPLODED VIEW 5 TENSION ARM ASSEMBLY (A) SUP., EXPLODED VIEW 6 TENSION ARM ASSEMBLY (B) TAKE UP and EXPLODED VIEW 7 GUIDE ROLLER ASSEMBLY: the supply and take-up tension arms with their guides, shafts, holders, springs and spring-retaining drums, the take-up arm's magnet, switch actuator and microswitch, and the guide roller stack, printed together on one page

PARTS LIST 8 HEAD ASSEMBLY↑ TOP

Ref. No.DescriptionParts No.Notes
8-1Protector, P.C, BoardKH4K002
8-2P.C, Board, HeadPB-71I
8-3Felt, Head, SwitchPZ1B010
8-4Plate, Head Mount. BaseKH0C019
8-5Bracket, L, P.C, BoardKZ3A066
8-6Bracket, R, P.C, BoardKZ3A067
8-7Spring, Head, 8mmGS2015
8-8Spring, Head, 6mmGS2016
8-9Head, Erase 2T/2cHGH4B004B
8-10Head, Reproduce 4T/2cHGH4P007C
8-11Head, Record 2T/2cHGH4R005B
8-12Head, Reproduce 2T/2cHGH4P027A
8-13Guide, HeadKG4C002
8-14Plate, ShieldKH4K001
8-15Connecter, P.C, BoardCN314002
8-16Plate, Housing BaseKH0C020
8-17Head Housing Ass'yKH-4C-A
8-18Cramp, Head WireKZ3A032
8-19Spring, Head. 8mmGS2015
8-20Spring, Head. 6mmGS2016

The following two parts lists show only the parts that differ from the above list depending on the version of the equipment.

MX5050B-4L,4LD↑ TOP

Ref. No.DescriptionPart No.Notes
8-7Spring, Head 8mmGS2016
8-8Spring, Head 8mmGS2016
8-9Head, Erase 4T/2CHGH4E058A
8-10Head, Reproduce 2T/2CHGH4P027C
8-11Head, Record 4T/2CHGH4R033B
8-12Head, Reproduce 4T/2CHGH4P007E
8-19Spring, Head 8mmGS2016
8-20Spring, Head 8mmGS2016

MX5050B-FHD,FLD↑ TOP

Ref. No.DescriptionPart No.Notes
8-7Spring, Head 8mmGS2016
8-8Spring, Head 8mmGS2016
8-9Head, Erase FullGH4E012B
8-10Head, Reproduce 2T/2CHGH4P027C
8-11Head, Record FullGH4R057B
8-12Head, Reproduce FullGH4P056B
8-17Head Housing Ass'yKH-4G-A
8-19Spring, Head 8mmGS2016
8-20Spring, Head 8mmGS2016

EXPLODED VIEW 8 HEAD ASSEMBLY: the head mount base with its four head stacks and springs, the head guide, the head p.c. board with its protector, brackets and connector, the shield plate, and the head housing on its base plate⤢ zoomEXPLODED VIEW 8 HEAD ASSEMBLY: the head mount base with its four head stacks and springs, the head guide, the head p.c. board with its protector, brackets and connector, the shield plate, and the head housing on its base plate

PARTS LIST 9 REEL ASSEMBLY↑ TOP

Ref. No.DescriptionPart No.Notes
9-1Drum, BrakeKW0A012
9-2Pin, Brake, ø3×16(F63316)Ass'y KW-4J-A
9-3Band, Brake(KW0D015)Ass'y KW-4J-A
9-4Felt, Brake(KW0D016)Ass'y KW-4J-A
9-5Retaining Ring, E Type ø3F753Ass'y KW-4J-A
9-6Arm, Brake(KW0D014)Ass'y KW-4J-A
9-7Retaining Ring. E Type ø2F752
9-8Pin, Brake SolenoidKZ5A003
9Cushion, Brake SolenoidPZ1C022
10Solenoid, BrakeGP1F02
11Clamp, BrakeKZ3A047
12Retainer, BrakeKW4B001
13Spring, BrakeGS1024
14P.C, Board, Capacitor(PB9A179)PB-73R Ass'y
15Capacitor, Reel Motor 6.5µF(CZ10023W)PB-73R Ass'y
16Plate, R. Reel MotorKW0G012
17Plate, L. Reel MotorKW0G013
18Plate, R. CapacitorKW4B004
19Plate, L. CapacitorKW4B003
20Motor, ReelMR1C012
21Bracket, Reel MotorKW0G016
22Drum, ReelKW0B017
23Nails, Reel DriveKW0E038
24Reel TableKW4J002

EXPLODED VIEW 9 REEL ASSEMBLY: the supply and take-up reel assemblies side by side: reel tables and reel drums, the brake drums, bands, arms and solenoids, and the reel motors with their brackets, plates and capacitors⤢ zoomEXPLODED VIEW 9 REEL ASSEMBLY: the supply and take-up reel assemblies side by side: reel tables and reel drums, the brake drums, bands, arms and solenoids, and the reel motors with their brackets, plates and capacitors

PARTS LIST 10 COUNTER ASSEMBLY↑ TOP

Ref. No.DescriptionParts No.Notes
10-1Switch, PushWH12023
10-2Bracket, Counter(SR8D001)Ass'y SR-8D-A
10-3Felt, Counter Spacer(PZ1B028)Ass'y SR-8D-A
10-4Belt, CounterBE1B147
1--5Felt, SwitchPZ1B012
10-6Button, Push, SwitchKN2026
10-7CounterSR8Z004
10-8Escutcheon, CounterSR8D002

EXPLODED VIEW 10 COUNTER ASSEMBLY: the tape counter with its bracket, belt and spacer felt, the push switch with its button and felt, and the counter escutcheon⤢ zoomEXPLODED VIEW 10 COUNTER ASSEMBLY: the tape counter with its bracket, belt and spacer felt, the push switch with its button and felt, and the counter escutcheon

PARTS LIST 11 CONTROL SWITCH ASSEMBLY↑ TOP

Ref. No.DescriptionPart No.Notes
11-1Switch, MicroWH11007
11-2Plate, R, Switch, BaseCB20601
11-3Protector, R, ButtonCB20602
11-4Button, Push, A, PLAY F.FWD REWINDKN2028
11-5Button, Push, B, RECKN2029
11-6Button, Push, C, STOPKN2030
11-7P.C, Board Ass'y, Aux, SwitchPB-42F
11-8Stud, Power P.C, BoardKZ7B106
11-9P.C, Board Ass'y, Power SwitchPB-42E
11-10Plate, L, Switch BasePB41A01A
11-11Protector, L, ButtonCB20701
11-12Button, Push PowerKN2031

The following list is for the MX5050B-2H,2L,and 4L models.

11-7P.C.Board Ass'y Aux SwitchPB-42L
11-9P.C.Board Ass'y Power SwitchPB-42M

EXPLODED VIEW 11 CONTROL SWITCH ASSEMBLY: the transport pushbuttons and microswitches on their switch base plates, the auxiliary and power switch boards, protectors and studs⤢ zoomEXPLODED VIEW 11 CONTROL SWITCH ASSEMBLY: the transport pushbuttons and microswitches on their switch base plates, the auxiliary and power switch boards, protectors and studs

PARTS LIST 12 CONNECTOR PANEL ASSEMBLY↑ TOP

Ref. No.DescriptionPart No.Notes
12-1Connector, 3Soc,CN103046
12-2Connector, 3Pin,CN103045
12-3Terminal, EarthCN901040
12-4Bush, CordPZ1G021
12-5Panel, ConnectorCB70101
12-6Cord, PowerPZ9D017
12-7Connector Ass'y, RemoteCN7C-006
12-8Spacer, Cord BushKZ6C025
12-9Stud, P.C Board, OutputKZ7A131
12-10P.C, Board Ass'y, Output, TransformerPB-73E

EXPLODED VIEW 12 CONNECTOR PANEL ASSEMBLY: the connector panel with its three-socket and three-pin connectors, earth terminal, power cord and bush, remote connector, and the output transformer board on its studs⤢ zoomEXPLODED VIEW 12 CONNECTOR PANEL ASSEMBLY: the connector panel with its three-socket and three-pin connectors, earth terminal, power cord and bush, remote connector, and the output transformer board on its studs

PARTS LIST 13 CHASSIS ASSEMBLY↑ TOP

Ref. No.DescriptionParts No.Notes
13-1Protector, ReelKWOH007
13-2Shaft, Tape GuideKG6E003
13-3Panel, Trim, Transport(T506102)*1Ass'y T5061-A
NOTE*1Escutcheon, Pitch Control(KC4H005)*1Ass'y T5061-A
Escutcheon, Counter(SR8D002)*1Ass'y T5061-A
Escutcheon, Cue(KR4B006)*1Ass'y T5061-A
13-3Panel, Tape Transport(T506301)*2Ass'y T5063-A
NOTE*2Eseutcheon, Counter(SR8D002)*2Ass'y T5063-A
Escutcheon, Cue(KR4B006)*2Ass'y T5063-A
13-4Panel, Trim, ControlT506103
13-5Panel, Chassis, TransportT506101
13-6Cramp, WireKZ3A022
13-7Stud, FrameKZ7A215
13-8Spacer, P.C, Board,LED(B)KZ7A823
13-9P.C, Board Ass'y LED.(B)PB-81H
13-10Bracket, Sensing SwitchT505005
13-11Switch, SensingWH91005
13-12Belt, Sensing SwitchBE1B069
13-13Transformer, PowerTF11025A
13-14Angle, Chassis, RearT506104
13-15Frame, Chassis, SideT506106
13-16Plate, L, P,C,BoardT506107
13-17Plate, R, P.C, BoardT506108
13-18Angle, Control P.C, Board(T506111)Ass'y T5061-B
13-19Cushion, Angle(PZ1C031)Ass'y T5061-B
13-20Bolt, AngleT506109
13-21AngleKZ3A068
13-22Spacer, Angle,P.C, BoardKZ7A315
13-23P.C, Board Ass'y, ControlPB-42D
13-24Protector, P.C, BoardT506114
13-25Washer, Trim, PanelKZ6C010
13-26Washer, Vinyl, PanelKZ6C011

NOTE: *1; For dc servo version:MX-5050B-2HD, 2LD, 4LD, FHD, and FLD.

*2; For synchronous version:MX-5050B-2H, 2L, and 4L.

EXPLODED VIEW 13 CHASSIS ASSEMBLY: the transport trim and chassis panels, the reel protectors and tape guide shaft, the side frames and rear angle, the power transformer, the sensing switch, the LED board (B), and the control p.c. board with its angle, plates and protector⤢ zoomEXPLODED VIEW 13 CHASSIS ASSEMBLY: the transport trim and chassis panels, the reel protectors and tape guide shaft, the side frames and rear angle, the power transformer, the sensing switch, the LED board (B), and the control p.c. board with its angle, plates and protector

PARTS LIST 14 AMPLIFIER ASSEMBLY↑ TOP

Ref. No.DescriptionParts No.Notes
14-1Knob,A.upper,AmpKN1014
14-2Knob. B. Lower, AmpKN1015
14-3Washer, Knob, AmpKZ6C017
14-4Button, Push, Red, AmpKN2025
14-5Button, Push, BlackKN2026
14-6Button, Push, GryKN2027
14-7Panel, Trim, Amp(A102801)Ass'y A1028-A
14-8Escutcheon, Meter(PZ4A007)Ass'y A1028-A
14-9Meter, VUME11005
14-10Felt, Shield, VU MeterPZ1B013
14-11P.C, Board Ass'y. LED(E)PB-81L
14-12P.C, Board Ass'y. LED(D)PB-81K
14-13Felt, Push SwitchPZ1B012
14-14Panel, Chassis, Amp.A102802
14-15Resistor, Var, AmpRV224010
14-16Jack, StereoCN603009
14-17Switch, SlideWH340013
14-18P.C, Board Ass'y, LED(C)PB-81J
14-19P.C, Bord Ass'y, VU AmpPB-13K
14-20P.C, Board Ass'y, AmplifierPB-13J
14-21P.C, Board Ass'y, Rec, EQPB-81Q
14-22Angle, P.C, Board Rec, EQKZ3A072
14-23Frame, L. Chassis, AmpA102808
14-24Frame, R. Chassis, AmpA102807
14-25PivotA102809
14-26Bracket, P.C, Board, AmpA102803
14-27Felt, Slide, SwitchPZ1B010

For MX5050B-4L, 4LD↑ TOP

14-20P.C.Board Ass'y AmplifierPB-13Z

For MX5050B-FHD,FLD↑ TOP

14-7Panel, Trim, Amp(A103301)Ass'y A1033-A
14-8Escutcheon, Meter(PZ4A007)Ass'y A1033-A
14-12P.C.Board Ass'y LED(F)PB-81T
14-20P.C.Board Ass'y AmplifierPB-13X
14-21P.C.Board Ass'y Rec. EQ.PB-81S

EXPLODED VIEW 14 AMPLIFIER ASSEMBLY: the amplifier's knobs, push buttons, trim panel and meter escutcheon, the VU meters and LED boards, the chassis panel and frames with the pivot, the headphone jack, slide switch and potentiometer, and the amplifier, VU amp and record EQ boards, turned here to read across the page⤢ zoomEXPLODED VIEW 14 AMPLIFIER ASSEMBLY: the amplifier's knobs, push buttons, trim panel and meter escutcheon, the VU meters and LED boards, the chassis panel and frames with the pivot, the headphone jack, slide switch and potentiometer, and the amplifier, VU amp and record EQ boards, turned here to read across the page

PARTS LIST 15 PACKAGING↑ TOP

Ref. No.DescriptionPart No.Notes
15-1Plate, TOPK703126
15-2Packing, L. SideK703103
15-3Packing, R. SideK703102
15-4Plate, Manual HoldK703124
15-5Accessory, Hold Down KnobKWOHA
15-6Accessory, Operation, ManualOS1-011
15-7Accessory, Reel. OpenZA-51A
15-8Plate, Spacing, Reel BoxK703123
15-9Cover, Tape RecorderPZ9C003
15-10Packing, BottomK703104
15-11Case, PackingK703101

EXPLODED VIEW 15 PACKAGING: the recorder in its cover between the side and bottom packings, with the top plate, the manual hold plate, the operation manual, hold down knob and reel accessories, inside the packing case⤢ zoomEXPLODED VIEW 15 PACKAGING: the recorder in its cover between the side and bottom packings, with the top plate, the manual hold plate, the operation manual, hold down knob and reel accessories, inside the packing case

PIN IDENTIFICATION↑ TOP

Following table shows the pin identification of all diodes, transistors, and integrated circuits (ICs), used in the circuits of this equipment.

DIODES↑ TOP

D-1PNS2VB20(S2VB20)
D-2PN-0038(RD12EB3)
D-3PNSM1-02(SM1-02)
D-4PN1S953(1S953)
D-5PN-0003
PN-0002		(SEL103S)
(SEL303E)

TRANSISTORS↑ TOP

Tr-1QC945LK
QA733P
QC1222EA
QC2003K		(2SC945LK)
(2SA733P)
(2SC1222(2)EA)
(2sc2003K)
Tr-2Q2SK68AN(2SK68AN)
Tr-3QD571L(2SD571L)
Tr-4QC1583G
QA798G		(2SC1583G)
(2SA798G)

PIN IDENTIFICATION: the outline and pin order of each diode and transistor type: D-1 and Tr-1 to Tr-4 from below, D-2 to D-5 from the side with cathode and anode marked⤢ zoomPIN IDENTIFICATION: the outline and pin order of each diode and transistor type: D-1 and Tr-1 to Tr-4 from below, D-2 to D-5 from the side with cathode and anode marked

ICs↑ TOP

IC-1IM54410P(M54410P)
IC-2IA00N
IA03N		(SN7400N)
(SN7403N)
IC-3I9602PC(9602PC)
IC-4IHC571C(µPC571C)
IC-5IHC14305
IHC14324
IHC14315		(µA7805UC or µPC14305H)
(µA7825UC or µPC14324H)
(µA7815UC or µPC14315H)
IC-6[IC704]
II15UC		(µA7915UC)
IC-7I-0004(NE5534AN)
IC-8I-0001(NJM4559DE)
IC-9IA14N(SN7414N)

ICs: the pin-outs of IC-1 to IC-9: the transport control logic, gates, one-shots, inverters and op-amps from the top, and the regulators as package outlines with their pins named⤢ zoomICs: the pin-outs of IC-1 to IC-9: the transport control logic, gates, one-shots, inverters and op-amps from the top, and the regulators as package outlines with their pins named

BLOCK DIAGRAM ( for 2 track type )↑ TOP

BLOCK DIAGRAM ( for 2 track type ): the signal path from line, mic and test oscillator inputs through the mix, record EQ and bias stages to the record and erase heads, and back from the reproduce heads through the reproduce, output, meter and peak indicator amplifiers, with levels marked at each stage⤢ zoomBLOCK DIAGRAM ( for 2 track type ): the signal path from line, mic and test oscillator inputs through the mix, record EQ and bias stages to the record and erase heads, and back from the reproduce heads through the reproduce, output, meter and peak indicator amplifiers, with levels marked at each stage

Full-resolution scan of this sheet — 2807 × 2178 px, 0.3 MB.

BLOCK DIAGRAM ( for 4 track type )↑ TOP

BLOCK DIAGRAM ( for 4 track type ): the same signal path drawn for the four-track heads, with its own head currents and levels⤢ zoomBLOCK DIAGRAM ( for 4 track type ): the same signal path drawn for the four-track heads, with its own head currents and levels

Full-resolution scan of this sheet — 2763 × 2078 px, 0.3 MB.

BLOCK DIAGRAM ( for Full track type )↑ TOP

BLOCK DIAGRAM ( for Full track type ): the same signal path drawn for the full-track heads, without the selective reproduce amplifier⤢ zoomBLOCK DIAGRAM ( for Full track type ): the same signal path drawn for the full-track heads, without the selective reproduce amplifier

Full-resolution scan of this sheet — 2807 × 2281 px, 0.3 MB.

HEAD ASSEMBLY↑ TOP

HEAD ASSEMBLY: the head p.c. board wiring, for the MX5050B-2LD, 2HD and 4LD at left and for the MX5050B-FHD and FLD at right, from the connector pins through the head selector switches to the erase, record and reproduce heads⤢ zoomHEAD ASSEMBLY: the head p.c. board wiring, for the MX5050B-2LD, 2HD and 4LD at left and for the MX5050B-FHD and FLD at right, from the connector pins through the head selector switches to the erase, record and reproduce heads

TAPE TRANSPORT ; T5061 (for MX5050B-2HD,2LD,4LD,FHD,FLD) DC SERVO CAPSTAN MOTOR↑ TOP

TAPE TRANSPORT ; T5061 (for MX5050B-2HD,2LD,4LD,FHD,FLD) DC SERVO CAPSTAN MOTOR: the transport wiring schematic for the dc servo models, from the control p.c.b. to the motors, solenoids, switches and connectors⤢ zoomTAPE TRANSPORT ; T5061 (for MX5050B-2HD,2LD,4LD,FHD,FLD) DC SERVO CAPSTAN MOTOR: the transport wiring schematic for the dc servo models, from the control p.c.b. to the motors, solenoids, switches and connectors

Full-resolution scan of this sheet — 4664 × 3186 px, 0.9 MB.

TAPE TRANSPORT ; T5063 (for MX5050B-2H,2L,4L) HYSTERESIS SYNCHRONOUS CAPSTAN MOTOR↑ TOP

TAPE TRANSPORT ; T5063 (for MX5050B-2H,2L,4L) HYSTERESIS SYNCHRONOUS CAPSTAN MOTOR: the transport wiring schematic for the hysteresis synchronous models⤢ zoomTAPE TRANSPORT ; T5063 (for MX5050B-2H,2L,4L) HYSTERESIS SYNCHRONOUS CAPSTAN MOTOR: the transport wiring schematic for the hysteresis synchronous models

Full-resolution scan of this sheet — 4713 × 3176 px, 0.9 MB.

CONTROL PCB ASS'Y ; PB-42D (for MX5050B-2HD,2LD,FHD,FLD) ; PB-42K (for MX5050B-2H,2L,4L)↑ TOP

CONTROL PCB ASS'Y ; PB-42D (for MX5050B-2HD,2LD,FHD,FLD) ; PB-42K (for MX5050B-2H,2L,4L): the transport control board schematic: the logic IC, relays, solenoid drivers and power supply regulators, with its parts table⤢ zoomCONTROL PCB ASS'Y ; PB-42D (for MX5050B-2HD,2LD,FHD,FLD) ; PB-42K (for MX5050B-2H,2L,4L): the transport control board schematic: the logic IC, relays, solenoid drivers and power supply regulators, with its parts table

Full-resolution scan of this sheet — 4698 × 3088 px, 0.9 MB.

RECORD REPRODUCE AMPLIFIER ; A1028 (for MX5050B-2H,2HD,2L,2LD,4L,4LD)↑ TOP

RECORD REPRODUCE AMPLIFIER ; A1028 (for MX5050B-2H,2HD,2L,2LD,4L,4LD): the record and reproduce amplifier schematic, with its tables of semiconductors, potentiometers, and switches and relays⤢ zoomRECORD REPRODUCE AMPLIFIER ; A1028 (for MX5050B-2H,2HD,2L,2LD,4L,4LD): the record and reproduce amplifier schematic, with its tables of semiconductors, potentiometers, and switches and relays

Full-resolution scan of this sheet — 4710 × 3083 px, 1.4 MB.

RECORD REPRODUCE AMPLIFIER ; A1034 (for MX5050B-FHD,FLD)↑ TOP

RECORD REPRODUCE AMPLIFIER ; A1034 (for MX5050B-FHD,FLD): the full-track record and reproduce amplifier schematic, with its tables of semiconductors, potentiometers, and switches and relays⤢ zoomRECORD REPRODUCE AMPLIFIER ; A1034 (for MX5050B-FHD,FLD): the full-track record and reproduce amplifier schematic, with its tables of semiconductors, potentiometers, and switches and relays

Full-resolution scan of this sheet — 4714 × 3367 px, 1.3 MB.

← Major Component Replacement