Fostex X-24 Service Manual
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Fostex X-24 Service Manual

Fostex X-24 Service Manual

Fostex multitracker service manual
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X-24
multitracker

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Summary of Contents for Fostex X-24

  • Page 1 Service Manual Model X-24 multitracker...

  • Page 2: Safety Instructions

    (including amplifiers) that produce heat. Power Sources - The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance. Grounding or Polarization - The precautions that should be taken so that the grounding or polarization means of an appliance is not defeated.

  • Page 3: Table Of Contents

    NOTES Adjusting Procedures, Parts List and circuit diagrams are given in this manual to assist the service technician in maintaining the Model X-24. The following accessories are supplied with X-24 as the standard accessories. Owner's manual AC adaptor AD-12A Following is the packing material for the Model X-24.

  • Page 4: Specifications

    X-24 1. SPECIFICATIONS DEFINITION Specification Unit Normal Fader Position Input fader Condition Master fader Condition MIXER SECTION Standard Input MIC IN Connector Input level Impedance LINE IN / INSERT (RCV) Connector Input level Impedance Standard Output TAPE OUT 1 ~ 4...

  • Page 5: Recorder Section

    Test tape: AC-514 (NR: OUT, recording level: 0 dB) +3 dB -3 dB 40 Hz 400 Hz Test tape: AC-514 (NR: IN, recording level: -25dB) 5 dB 250 Hz X-24 12.5 kHz 12.5 kHz 6 dB 10 kHz 12.5 kHz...
  • Page 6 X-24 RECORDER SECTION (continued) Level Deviation at Reference Output Level PLAY REC & PLAY PLAY REC & PLAY Distortion (REC & PLAY) Erasure Ratio Cross Erasure Channel Separation Sync Crosstalk Bias Leakage Click Noise PLAY STOP STOP Monitor PLAY Punch In / Out Shock Noise Specifications and appearance are subject to change without notice for product improvement.

  • Page 7: Top Panel

    Recording button [ REC ] Pause button [ PAUSE ] 11. Power LED [ POWER ] 12. Record LED [ REC ] 13. Auto bounce on/off button [ Auto Bounce ] 14. Auto bounce LED 15. Trim knob DC IN RESET STOP PAUSE X-24...

  • Page 8: Routine Maintenance

    X-24 < Front Panel > 2 ( HOT ) 3 ( COLD ) 1 ( GND ) < Rear Panel > 1. Line out jacks [ LINE OUT L, R ] 2. Line in/insert jacks [ LINE/INSERT 1, 2, 3, 4 ] 3.
  • Page 9 Demagnetizing Procedures After turning off the power of Model X-24, open the cassette lid and if a cassette tape is loaded, remove and place it far away from the deck. Switch on the head demagnetizer while holding it about one meter away from the Model X-24. Then, slowly move the head demagnetizer tip to the head and wave the tip up and down several times close to the head surface.
  • Page 10 X-24 3-3. Tape Transport Mechanical Data 3-3-1. Reel torque PLAY mode (TW-2111A) FF/REW mode (TW-2231) 3-3-2. Pinch roller pressure Pull force 3-4. Tape Travel Check and Adjustment Using the mirror type cassette, check to see that the tape is running stable between the ERASE and REC/PLAY heads tape guides without weaving.
  • Page 11 TAPE OUT 1 ~ 4. If the AC volt meter reading is not within -10 dBV (0.3 V) ± 0.5 dB, adjust the pot R121 ~ 421 (22 k ) on the R/P PCB assy. X-24...
  • Page 12 X-24 3-13. Overall Frequency Response Adjustment Set the controls under the same condition as 3.12 except the DOLBY switch. (The switch should be turned on.) Apply a 400 Hz, -35 dBV (18 mV) signal to the INPUT 1 and 2 phone jacks.
  • Page 13 Plug the foot switch (e.g. Model 8051) in the Punch in/out jack and press the PLAY button. Press the foot switch repeatedly and check if the click level at TAPE OUT 1 ~ 4 is less than -20 dBV X-24...

  • Page 14: Exploded View, Pcb Assembly And Parts List

    X-24 TRANSPORT EXPLODED VIEW & PARTS LIST Ref. No. Part No. 8259 0500 00 Head, erase, X-14/24 8259 0520 00 Head, R/P, 4T, N-LR44RS07, X-24 8260 4620 00 Pinch roller assy 8260 4630 00 Idler arm assy 8260 4640 00 Fly wheel assy 8260 4650 00 Motor assy 8260 4660 00 F.R.

  • Page 15: Overall Exploded View

    X-24 X-24 OVERALL EXPLODED VIEW BBT 3x8 CZn BBT 3x8 CZn BBT 3x8 CZn BBT 3x8 CZn BBT 3x8 CZn BBT 3x8 CZn BBT 3x8 CZn BBT 3x8 CZn 3x8 CZn BBT 3x8 CZn BBT 3x12 BZn...
  • Page 16 X-24 TRANSPORT EXPLODED VIEW...

  • Page 17: Pcb Pattern Drawing

    X-24 X-24 PCB PATTERN DRAWING...
  • Page 18 • R/P / REGULATOR PCBs...
  • Page 19 X-24 Parts List • MIXER PCB Ref. No. Part No. Description 8274 1330 00 PCB assy, Mixer, X-24 B001 8251 9680 01 Plain PCB, Mixer, X-24 Ref. No. Part No. Description U001 8236 5405 00 ST, analog, NJM2068M U002~004 8236 7207 00 ST, analog, NJM4560M...
  • Page 20 W008 8276 9089 25 Cable, flat, 9P, L250 • JACK PCB Ref. No. Part No. 8274 1340 00 PCB assy, Mixer, X-24 B001 8251 9681 02 Plain PCB, Jack, X-24 Ref. No. Part No. R101, 201 8230 1381 23 Resistor, HT, carbon, 1/4W,...
  • Page 21 8232 8031 03 VT, CER, 50V, 0.01 F, YF C050 8232 1421 07 VT, ALU, 10V, 100 F, 20%, SME C051 8232 9011 04 VT, PES, 50V, 0.1 F, 5%, AMZ C052 8232 9012 23 VT, PES, 50V, 0.022 F, 5%, AMZ X-24 Description Description...
  • Page 22 J301 J401 L001 L101~401 8256 0660 00 Module, trap, 80kHz L102~402 8256 0990 00 Module, MPX, XR-5/X-24 L103~403 8256 0660 00 Module, trap, 80kHz S001, 002 8253 6520 05 SW, PL, slide, 2-2, TP001 TP101~401 8276 0010 00 Pin, header...

  • Page 23: Circuit & Block Diagrams

    X-24 5. CIRCUIT & BLOCK DIAGRAMS...
  • Page 24 R/P / REGULATOR PCBs R/P PCB REP EQ TP101 L102 C102 FB-7G 1/50 C107 R109 2.2/50 2.2K 2068 R102 C103 U101B C101 100K C104 R101 560P C105 220P R103 L101 0.0082(PP) 22KB C108 R105 3900P(PP) 390K R106 REP EQ 470B REP LEV U104 DTC114TK...

  • Page 25: Block Diagram

    BLOCK DIAGRAM LINE IN/INSERT A. B REC -10dBV INPUT TIP: RTN FADER RING: SEND LINE IN/INSERT A. B REC -10dBV INPUT TIP: RTN FADER RING: SEND LINE IN/INSERT A. B REC -10dBV INPUT TIP: RTN FADER RING: SEND LINE IN/INSERT A.
  • Page 26 FOSTEX CORPORATION 3-2-35 Musashino, Akishima, Tokyo, Japan 196-0021 FOSTEX CORPORATION OF AMERICA 15431 Blackburn Ave., Norwalk, CA 90650, U.S.A. © PRINTED IN JAPAN JUNE 1998 8288772000...

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