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SERVICE MANUAL
B
E
EE
EN
J
UB
US
UT
UX
UY
Contents
Safety Precautions
Instructions (For XM-P55&PJ1)
Description of Major ICs
Removal of Main Parts
Maintenance of MD Pickup
Procedures of Changing the MD Pickup
Self-diagnosis Function of MD
PORTABLE MINIDISC PLAYER
O P
E N
Area Suffix
(XM-P55 )
U.K. (BU,SL)
Continental Europe (BU,SL)
Russian Federation (BU,SL)
Northern Europe (BU,SL)
U.S.A. (SL)
Hong kong (BU,GN,SL)
Singapore (BU,SL)
Taiwan (SL)
Saudi Arabia (SL)
Argentina (SL)
1-2
1-3~16
2-1
2-12
2-23
2-23
2-24
COPYRIGHT 1999 VICTOR COMPANY OF JAPAN, LTD.
Area Suffix
(XM-PJ1 )
B
U.K. (BU)
E
Continental Europe (BU)
EE
Russian Federation (BU)
EN
Northern Europe (BU)
J
U.S.A. (BU)
UB
Hong kong (BU,GD)
US
Singapore (BU)
UT
Taiwan (BU)
UX
Saudi Arabia (BU)
UY
Argentina (BU)
Block Diagrams
Standard Schematic Diagrams (XM-P55)
Standard Schematic Diagrams (XM-PJ1)
Printed Circuit Boards
Parts List (XM-P55)
Parts List (XM-PJ1)
XM-PJ1
2-27
2-29
2-36
2-42,43
3-1~15
4-1~15
No.20738
Jan. 1999

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   Summary of Contents for JVC XM-P55

  • Page 1: Table Of Contents

    Saudi Arabia (SL) Saudi Arabia (BU) Argentina (SL) Argentina (BU) Contents 2-27 Block Diagrams Safety Precautions 2-29 Standard Schematic Diagrams (XM-P55) Instructions (For XM-P55&PJ1) 1-3~16 2-36 Standard Schematic Diagrams (XM-PJ1) Description of Major ICs 2-42,43 Printed Circuit Boards Removal of Main Parts...

  • Page 2

    XM-P55 XM-PJ1 Safety Precaution Burrs formed during molding may be left over on some parts of the chassis. Therefore, CAUTION pay attention to such burrs in the case of preforming repair of this system. Please use enough caution not to see the beam directly or touch it in case of an CAUTION adjustment or operation check.

  • Page 3

    XM-P55 XM-PJ1 Description of Major ICs CXA2523AR(IC310):MD RF & Servo 1.Block Diagram ADIP Amp TE/SE Amp PEAK 3TADJ FE Amp RFAGC 22 EQADJ AGCI 21 VREF COMPO 20 F0CNT COMPP 19 XSTBY ADDC 18 XLAT 17 SCLK Command I/F 16 SWDT...

  • Page 4

    XM-P55 XM-PJ1 Symbol Function Pin No. Reference voltage output. VREF Equalizer center frequency setting pin. EQADJ BPF3T center frequency setting pin. 3TADJ Power supply. BPF22 center frequency setting pin. WBLADJ Tracking error signal output. Connects the sled error signal LPF capacitor.

  • Page 5

    XM-P55 XM-PJ1 CXA8069M(IC450):Sensorless Motor Driver 1.Pin Layout 2.Block Diagram PGND Power Stage Voltage Driver COMF Level Shifter CPOUT CPC2 Charge Pump CPC1 Sensorless RMAX Logic RMIN RESET CLOCK VCOIN Full Wave Rectifier SLOPE...

  • Page 6

    XM-P55 XM-PJ1 Pin Functions Pin Name Functions Non connection Detection of motor current Motor driven power supply Non connection Connect first condenser of charge pump to this terminal. Connect first condenser of charge pump to this terminal. Connect second condenser of charge pump to this terminal.

  • Page 7

    XM-P55 XM-PJ1 CXD2655R (IC351):Digital Servo Processor Block Diagram...

  • Page 8

    XM-P55 XM-PJ1 Pin Function Description Functions and Operations Symbol Functions and Operations Symbol Monitor input and output Playback EFM full-swing output Monitor output Playback EFM comparator slice voltage input Monitor output Analog power supply Monitor output Playback EFM comparator bias current input...

  • Page 9

    XM-P55 XM-PJ1 HD6433045SV14X (IC501): Beams Microcomputer Terminal Layout Block Diagram Port 3 Port 4 Address bus Data bus (upper level) Data bus (lower level) Interrupt controller controller (DMAC) Mask ROM PROM Flash memory Refresh controller Watch dog timer (WDT) 16 bits...

  • Page 10

    XM-P55 XM-PJ1 Description Symbol Symbol Function and Operation Function and Operation Power supply Connect to MPC17A39 power save terminal Communications line terminals to CXA2523AR, Connect to CXA8069 start / stop terminal connect to XSTB terminal Communications line terminals to CXA2523AR,...

  • Page 11

    XM-P55 XM-PJ1 MPC17A39DTB-X (IC400):4Channel Bridge Driver Terminal Layout Block Diagram Pin Function Description Functions and Operations Functions and Operations Symbol Symbol DC / DC Converter circuit ground CH 4 control signal input External CLOCK input connection CH 4 control signal input...

  • Page 12

    XM-P55 XM-PJ1 MB3800PFV-W(IC931):Switching Regulator Controller Terminal Layout Block Diagram Reference Santooth voltage wave generator Output drive control circuit Soft start S.C.P Pin Function Description Pin No. Symbol Functions and operations Error amplifier inversion input Soft start, capacity for SCP setting connection...

  • Page 13

    XM-P55 XM-PJ1 MN41X17400CTT10X(IC391):DRAM Terminal Layout Pin Functions Symbol Function Address input Row address / strove Column address / strove Write enabling input. Output enabling input. Data input Power supply ( 3.3V) Power supply (0V) Non connection Block Diagram Write Clock...

  • Page 14

    XM-P55 XM-PJ1 Removal of Main Parts MD door <XM-P55 Section> assembly Removing the MD Door Assembly and the Bottom Cover (See Fig.1 to 4) Move the door lever and open the door. Remove the four A screws attaching the MD door assembly and remove the MD door assembly from the body.

  • Page 15

    XM-P55 XM-PJ1 Hold switch Removing the Main Board (See Fig.5 to 7) Remove the three C screws and the screw D attaching the main board. Unsolder the part c of the battery terminal. Open the battery lid and remove it from the flame assembly.

  • Page 16

    XM-P55 XM-PJ1 Removing the Mechanism Assembly Mechanism assembly Flame assembly (See Fig.8) 1. Remove the two E screws attaching the mechanism assembly and remove the mechanism assembly from the flame assembly. Fig.8 2-14...

  • Page 17

    XM-P55 XM-PJ1 Removal of Main Parts Battery lid Bottom cover assembly <XM-PJ1 Section> Removing the Bottom Cover (See Fig.1 to 3) Move and remove the battery lid of the bottom cover assembly on the side of the body in the direction of the arrow.

  • Page 18

    XM-P55 XM-PJ1 Removing the Front Cover Assembly (See Fig.4) Remove the bottom cover assembly. Remove the two C screws attaching the front cover assembly, and remove the front cover assembly while turning it in the direction of the arrow in the Fig.4.

  • Page 19

    XM-P55 XM-PJ1 Removing the Main Board Headphone jack Main board (See Fig.9 to 11) Remove the four F screws attaching the main board. Remove the headphone jack fixed with a double-sided tape upward. Battery terminal e Unsolder the part d of the main board.

  • Page 20

    XM-P55 XM-PJ1 Removing the Door Cover Door cover (See Fig.12, 13) Remove the bottom cover. Remove the front cover. Remove the cabinet. Push the lower part of the door lock lever outside on the lower front side of the body, and open the door.

  • Page 21

    XM-P55 XM-PJ1 Holder Assembly <Removal of MD Mechanism Assembly> Stopper Removing the Holder Assembly (See Fig.1, 2) Turn the holder assembly as shown in Fig.1. Push the stopper of the holder assembly to release its Push inside tab, and turn the holder assembly as shown in Fig.2.

  • Page 22

    XM-P55 XM-PJ1 Slit washer Chassis assembly Removing the Pickup Unit Worm gear (See Fig.4, 5) Remove the slit washer on the reverse side of the MD mechanism and remove the worm gear. Remove the screw B and the hold spring.

  • Page 23

    XM-P55 XM-PJ1 (Fold fast.) (Attach a spacer.) (Fix fast not to unfold.) (Fold fast.) Fig.7 Hold spring <Reassembling the Pickup Unit> Part e Prior to performing the following procedures, fold the flexible harness of the pickup unit (see Fig.7,8 and 9). Fix Pickup unit the flexible harness with a spacer not to unfold.

  • Page 24

    XM-P55 XM-PJ1 Removing the Feed Motor/ Screw Shaft Assembly and Wheel Gear Unsolder the two harnesses extending from the feed motor. Remove the screw D attaching the feed motor, then the spring. Remove the feed motor from the feed motor base.

  • Page 25

    XM-P55 XM-PJ1 Maintenance of MD Pickup Procedures of Changing the MD pickup 1. Cleaning of pickup lens Change the MD pickup by referring (1) Prior to changing the pickup, clean the pickup lens. to "Removing the MD pickup" in the Disassembly Method.

  • Page 26: Xm-p55

    XM-P55 XM-PJ1 Self diagnosis Function of MD Power Supply ------------- Use to a battery charger by more than 1.3volt Establishment ------------ Set up the horizontal 1. The method of changing to the self-diagnosis mode turns off the power supply of the main body first.

  • Page 27: Xm-p55

    XM-P55 XM-PJ1 Self-diagnosis Fllow Chart 2-25...

  • Page 28

    XM-P55 XM-PJ1 2-26...

  • Page 29

    XM-P55 XM-PJ1 Block Diagrams RF IC PICKUP 16M D RAM Servo FCS, TRK SLED HP JACK Audio DRIVER SPINDLE DRIVER ACB BEEP MUTE Each Block Micro POWER REMOTE computer SUPPLY CONTROL LEVEL DIAGRAM Headphone AMP ACB Circuit 2-27...

  • Page 30

    XM-P55 XM-PJ1 -MEMO- 2-28...

  • Page 31

    XM-P55 XM-PJ1 Standard Schematic Diagrams XM-P55 (Except to U.S.A.) BLOCK B BLOCK D BLOCK C BLOCK A 2-29...

  • Page 32

    XM-P55 XM-PJ1 BLOCK A XM-P55 (Except to U.S.A.) To BLOCK B Digital signal 2-30...

  • Page 33

    XM-P55 XM-PJ1 XM-P55 (Except to U.S.A.) BLOCK B To BLOCK A Digital signal Analogue signal 2-31...

  • Page 34

    XM-P55 XM-PJ1 XM-P55 (Except to U.S.A.) BLOCK C To BLOCK D 2-32...

  • Page 35

    XM-P55 XM-PJ1 BLOCK D XM-P55 (Except to U.S.A.) To BLOCK C 2-33...

  • Page 36

    XM-P55 XM-PJ1 -MEMO- 2-34...

  • Page 37

    XM-P55 XM-PJ1 XM-P55J ONLY 2-35...

  • Page 38

    XM-P55 XM-PJ1 XM-PJ1 (Except to U.S.A.) BLOCK A XM-PJ1(Except to U.S.A.) To BLOCK B B BLOCK D BLOCK A BLOCK C BLOCK Digital signal 2-36...

  • Page 39

    XM-P55 XM-PJ1 BLOCK B XM-PJ1(Except to U.S.A.) Digital signal To BLOCK A Anologue signal 2-37...

  • Page 40

    XM-P55 XM-PJ1 BLOCK C XM-PJ1(Except to U.S.A.) To BLOCK D 2-38...

  • Page 41

    XM-P55 XM-PJ1 BLOCK D XM-PJ1(Except to U.S.A.) To BLOCK C 2-39...

  • Page 42

    XM-P55 XM-PJ1 -MEMO- 2-40...

  • Page 43

    XM-P55 XM-PJ1 XM-PJ1 J ONLY 2-41...

  • Page 44

    XM-P55 XM-PJ1 Printed Circuit Boards Main board Block No. (Solder side) : chip parts (Parts side) XM-P55 ONLY 2-42...

  • Page 45: Xm-p55

    XM-P55 XM-PJ1 Switch Board Block No. Headphone Jack Board Block No. 2-43...

  • Page 46

    XM-P55 XM-PJ1 -MEMO- 2-44...

  • Page 47

    XM-P55 XM-PJ1 PARTS LIST [ XM-P55 ] * All printed circuit boards and its assemblies are not available as service parts. Area Suffix U.K. (BU,SL) Continental Europe (BU,SL) Russian Federation (BU,SL) Northern Europe (BU,SL) U.S.A. (SL) Hong kong (BU,GN,SL) Singapore (BU,SL)

  • Page 48

    XM-P55 XM-PJ1 General Exploded View and Parts List Block No (MODEL:XM-P55)

  • Page 49

    XM-P55 XM-PJ1...

  • Page 50: Md Mechanism Ass'y And Parts List

    XM-P55 XM-PJ1 MD Mechanism Ass’y and Parts List Block No. (MODEL:PPM)

  • Page 51

    XM-P55 XM-PJ1...

  • Page 52: Electrical Parts List

    XM-P55 XM-PJ1 Electrical Parts List...

  • Page 53

    XM-P55 XM-PJ1...

  • Page 54

    XM-P55 XM-PJ1...

  • Page 55

    XM-P55 XM-PJ1...

  • Page 56: Packing Materials And Accessories Parts List (j)

    XM-P55 XM-PJ1 Packing Materials and Accessories Parts List Block No. J Version Section Block No. turn up turn down 3-10...

  • Page 57

    XM-P55 XM-PJ1 ¡ ¡ ¡ ¡ ¡ Packing Parts list ¡ ¡ ¡ ¡ ¡ Accessories Parts list 3-11...

  • Page 58: Packing Materials And Accessories Parts List (e/ee/en)

    XM-P55 XM-PJ1 Packing Materials and Accessories Parts List Block No. E/EE/EN/ Version Section Block No. turn up turn down 3-12...

  • Page 59

    XM-P55 XM-PJ1 ¡ ¡ ¡ ¡ ¡ Packing Parts list ¡ ¡ ¡ ¡ ¡ Accessories Parts list 3-13...

  • Page 60: Packing Materials And Accessories Parts List (b/ub/us/ut/ux/uy)

    XM-P55 XM-PJ1 Packing Materials and Accessories Parts List Block No. B/UB/US/UT/UX/UY/ Version Section Block No. turn up turn down 3-14...

  • Page 61

    XM-P55 XM-PJ1 ¡ ¡ ¡ ¡ ¡ Packing Parts list ¡ ¡ ¡ ¡ ¡ Accessories Parts list 3-15...

  • Page 62

    XM-P55 XM-PJ1 -MEMO- 3-16...

  • Page 63

    XM-P55 XM-PJ1 PARTS LIST [ XM-PJ1 ] * All printed circuit boards and its assemblies are not available as service parts. Area Suffix U.K. (BU) Continental Europe (BU) Russian Federation (BU) Northern Europe (BU) U.S.A. (BU) Hong kong (BU,GD) Singapore (BU)

  • Page 64

    XM-P55 XM-PJ1 General Exploded View and Parts List Block No. (MODEL:XM-PJ1) C991 J991...

  • Page 65

    XM-P55 XM-PJ1...

  • Page 66

    XM-P55 XM-PJ1 MD Mechanism Exploded View and Parts List Block No. MD Mechanism as same as XM-P55. Please refer of the page 3-4 and 3-5.

  • Page 67

    XM-P55 XM-PJ1 Electrical Parts List...

  • Page 68

    XM-P55 XM-PJ1...

  • Page 69

    XM-P55 XM-PJ1...

  • Page 70

    XM-P55 XM-PJ1...

  • Page 71

    XM-P55 XM-PJ1...

  • Page 72

    XM-P55 XM-PJ1 Packing Materials and Accessories Parts List Block No. J Version Section Block No. turn up turn down 4-10...

  • Page 73

    XM-P55 XM-PJ1 ¡ ¡ ¡ ¡ ¡ Packing Parts list ¡ ¡ ¡ ¡ ¡ Accessories Parts list 4-11...

  • Page 74

    XM-P55 XM-PJ1 Packing Materials and Accessories Parts List Block No. E/EE/EN/ Version Section Block No. turn up turn down 4-12...

  • Page 75

    XM-P55 XM-PJ1 ¡ ¡ ¡ ¡ ¡ Packing Parts list ¡ ¡ ¡ ¡ ¡ Accessories Parts list 4-13...

  • Page 76

    XM-P55 XM-PJ1 Packing Materials and Accessories Parts List B/UB/US/UT/UX/UY/ Version Section Block No. Block No. A1 A4 turn up turn down 4-14...

  • Page 77

    XM-P55 XM-PJ1 Packing Parts List Accessories Parts List 4-15...

  • Page 78

    XM-P55 XM-PJ1 VICTOR COMPANY OF JAPAN, LIMITED AUDIO DIVISION,10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.20738) 9901 (V )

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