Instruction/ maintenance manual of the product X-24 Fostex
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X-24 Service Manual Model multitracker.
SAFETY INSTRUCTIONS Read instructions - All the safety and operating instruc- tions should be read before the appliance is operated. Retain instructions - The safety and operating instructions should be retained for future reference. Heed warnings - All warnings on the appliance and in the operating instructions should be adhered to.
Parts marked with this sign are safety critical components. They must always be replaced with identical components. Refer to the Fostex Parts List and ensure exact replacement. CAUTION TABLE OF CONTENTS 1. SPECIFICATIONS . . . . . . . . . . . . . . . .
4 X-24 1. SPECIFICATIONS DEFINITION Specification Unit 0 dBV = 1 Vrms Normal Fader Position Input fader At 8 ± 1 position Condition LINE IN / INSERT: -10 dBV / 1 kHz Recorder: Input Monitor mode (REC - PAUSE) Adjust input fader for -10 dBV at TAPE OUT.
X-24 5 MIXER SECTION (continued) Distortion (With 400 Hz HPF & 30 kHz LPF) 0.05 % or less (Input: 1 kHz / 0 dBV signal, MIC GAIN: LINE, LINE OUT: 0 dBV.
6 X-24 Specifications and appearance are subject to change without notice for product improvement. RECORDER SECTION (continued) Level Deviation at Reference Output Level PLAY 1 dB or less at 400 Hz (NR: OUT, TCW-231 test tape) 3 dB or less at 40 HZ ~ 12.
X-24 7 2. CONTROLS, INDICATORS & CONNECTORS 1 2 3 4 POWER REC 6+ 3 0 5 -10 6+ 3 0 5 -10 6+ 3 0 5 -10 6+ 3 0 5 -10 REC SEL REC SEL REC SEL REC SEL P AN INPUT/PLA YBACK LEVEL Auto Bounce 00 0 REC RE.
8 X-24 < Rear Panel > < Front Panel > 1. Mic input jacks [ MIC IN 1/3, 2/4 ] 2. Headphone jack [ PHONES ] 3. Punch in/out jack [ PUNCH IN/OUT ] PUNCH IN/OUT PHONES 2 ( HO T ) 3 ( COLD ) 1 ( GND ) 1 2 3 4 T APE OUT 1. Line out jacks [ LINE OUT L, R ] 2.
X-24 9 2) Capstan and pinch roller Buildup of magnetic particles and dust on these parts will cause increase in wow, flutter and wrapping of tape on the capstan. Thus, these parts must always be kept clean. Cleaning is done with cotton buds moistened with fluids prescribed or recommended for tape recorders and especially the heads.
10 X-24 3-3. Tape Transport Mechanical Data 3-3-1. Reel torque PLAY mode (TW-2111A) Supply: 1.5 ~ 6 g-cm Takeup: 20 ~ 70 g-cm FF/REW mode (TW-2231) FF /REW: 60 ~ 120 g-cm 1) 2) 3-3-2.
X-24 11 3-9. Playback Frequency Response Calibration Set the controls as follows. Record track select switch: OFF Dolby B noise reduction on/off switch: OFF Connect an AC volt meter to the TAPE OUT 1 through 4 pin jacks respectively. Playback the TCW-284F test tape and adjust R103 ~ R403 so that the output level at 6.
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.
X-24 13 3-17. Sync crosstalk measurement Set the controls as follow and put a blank tape to the transport. Trim knob: At minimum Input fader: Standard position (At 8 ± 1) Dolby B noise reduction on/off switch: OFF Apply a signal whose level is -10 dBV (0.
14 X-24 4. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST Ref. No. Part No. Description 1 8216 6580 00 Sheet, meter, X-24 2 8212 5931 00 Cover, cassette, X-14/24 3 8212 6050 00 Case, top, X-24 4 8226 1590.
X-24 15 X-24 OVERALL EXPLODED VIEW 1 6 4 5 8 7 2 17 18 10 11 16 12 14 15 25 24 28 29 30 26 27 19 20 21 22 23 9 3 BBT 3x8 CZn BBT 3x8 CZn BBT 3x8 CZn BBT 3x8 CZn BBT 3x8 CZn BBT 3x12 BZn BBT 3x8 CZn BB.
16 X-24 X-24 TRANSPORT EXPLODED VIEW.
X-24 17 X-24 PCB PATTERN DRAWING • MIXER / JACK PCBs.
18 X-24 • R/P / REGULATOR PCBs.
X-24 19 X-24 Parts List Ref. No. Part No. Description 8274 1330 00 PCB assy, Mixer, X-24 B001 8251 9680 01 Plain PCB, Mixer, X-24 ICs Ref. No. Part No.
20 X-24 Ref. No. Part No. Description C107, 207 8232 1431 06 VT, ALU, 16V, 10 µ F, 20%, SME C108~408 8232 1431 06 VT, ALU, 16V, 10 µ F, 20%, SME C109~409 8232 1431 06 VT, ALU, 16V, 10 µ F, 20%, SME.
X-24 21 Ref. No. Part No. Description Q002, 003 8234 5043 03 VT, NPN, 2SC1740S, S Q004 8234 5050 00 VT, FET, 2SK117, Y/GR/BL Q101~401 8234 5043 03 VT, NPN, 2SC1740S, S DIODEs Ref.
22 X-24 Ref. No. Part No. Description C053, 054 8232 9014 72 VT, PES, 50V, 0.0047 µ F, 5%, AMZ C055 8232 1431 06 VT, ALU, 16V, 10 µ F, 20%, SME C101~401 8232 8015 61 VT, CER, 50V, 560pF, 5%, SL C102~402 8232 1461 05 VT, ALU, 50V, 1 µ F, 20%, SME C103~403 N/A C104~404 8232 8012 21 VT, CER, 50V, 220pF, 5%, SL C105~405 8232 9018 22 VT, PES, 50V, 0.
X-24 23 MIXER / JACK PCBs 5. CIRCUIT & BLOCK DIAGRAMS D103 +VCC 2 U201B -VCC 3 -16dBV 7 4560 12K 10/16 PHONES OUT (16ohm 20mW) PUNCH IN/OUT J5 DTC314TK JA CK PCB (2/2) 2 1 W4 HGND J6 R L GND R253 .
24 X-24 R/P / REGULATOR PCBs R131 100 1 TP104 BIAS CURR 1 2 3 4 5 J101 C124 2.2/50 R129 6.2K 3 1 2 U108 DTC114TK REC LEVEL TRK1 C119 10/16 1 2 3 R121 22KB 2 3 8 4 1 U101A 2068 R122 6.
X-24 25 BLOCK DIAGRAM T APE OUT -10dBV 1 2 3 4 1 2 3 4 L R BARGRAPH MASTER F ADER PA N PA N PA N PA N LINE OUT -10dBV PHONES OUT 16 ohm 20mW REC TRK 1 REC TRK 2 REC TRK 3 REC TRK 4 INPUT F ADER LINE IN/INSERT -10dBV 1 2 3 4 TIP: RTN RING: SEND TRIM TRIM MIC IN 1/3 -10dBV <--> -50dBV REC A.
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.
An important point after buying a device Fostex X-24 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Fostex X-24 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Fostex X-24 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Fostex X-24 you will learn all the available features of the product, as well as information on its operation. The information that you get Fostex X-24 will certainly help you make a decision on the purchase.
If you already are a holder of Fostex X-24, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Fostex X-24.
However, one of the most important roles played by the user manual is to help in solving problems with Fostex X-24. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Fostex X-24 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
