Fostex X-24 Скачать руководство пользователя страница 25 | Manualshive

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25

BLOCK DIAGRAM

TAPE OUT

-10dBV

1

2

3

4

1

2

3

4

L

R

BARGRAPH

MASTER

FADER

PAN

PAN

PAN

PAN

LINE OUT

-10dBV

PHONES OUT

16 ohm 20mW

REC TRK 1

REC TRK 2

REC TRK 3

REC TRK 4

INPUT

FADER

LINE IN/INSERT

-10dBV

1

2

3

4

TIP: RTN
RING: SEND

TRIM

TRIM

MIC IN

1/3

-10dBV <--> -50dBV

REC

A. B REC

PB

REC

A. B REC

PB

REC

A. B REC

PB

REC

A. B REC

PB

REC

A. B REC

PB

2

3

1

2

3

1

TIP: RTN
RING: SEND

TIP: RTN
RING: SEND

TIP: RTN
RING: SEND

INPUT

FADER

INPUT

FADER

INPUT

FADER

REC

A. B REC

PB

REC

A. B REC

PB

REC

A. B REC

PB

LINE IN/INSERT

-10dBV

LINE IN/INSERT

-10dBV

LINE IN/INSERT

-10dBV

MIC IN 2/4

-10dBV <--> -50dBV

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Содержание X-24

Страница 1: ...X 24 Service Manual Model multitracker ...

Страница 2: ...r against them paying particular attention to cords at plugs convenience recep tacles and the point where they exit from the appliance Cleaning The appliance should be cleaned only as rec ommended by the manufacturer Nonuse Periods The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time Object and Liquid Entry Care should be taken so that obje...

Страница 3: ...K DIAGRAMS Owner s manual 8288418000 for export domestic model AC adaptor AD 12A 8270727003 for USA CND 8270727006 for EUR 8270727007 for UK 8270727010 for JPN Adjusting Procedures Parts List and circuit diagrams are given in this manual to assist the service technician in maintaining the Model X 24 NOTES The following accessories are supplied with X 24 as the standard accessories Following is the...

Страница 4: ...or RCA pin Output level 10 dBV Load impedance 10 kΩ or more LINE OUT L R Connector RCA pin Output level 10 dBV Load impedance 10 kΩ or more INSERT SEND Connector Stereo phone ring Output level 10 dBV Load impedance 10 kΩ or more Phones Max Output Level 20 mW or more 1 kHz 16 Ω load Level Indication 0 dB is indicated by 5 dot LED bargraph meter when input output level is 10 dBV with the above stand...

Страница 5: ...d 3 times from 5 cm height RECORDER SECTION Tape Speed 9 5 cm s 1 5 3000 Hz 45 Hz when reproducing TCW 211 test tape Wow Flutter PLAY 0 25 or less TCW 211 test tape ANSI WTD REC PLAY 0 30 or less AC 514 test tape ANSI WTD Pitch Control MIN PITCH VR Fully CCW 45 or less TCW 211 test tape MAX PITCH VR Fully CW 12 or more TCW 211 test tape Fast Winding Time FF RWD 150 20 sec TAPE C 60 Tape Counter De...

Страница 6: ...Hz Input signal 1 kHz 0 dBV standardfader position with 1 kHz BPF Cross Erasure 1 dB or less Input signal 10 kHz 10 dBV standard fader position Measure level difference when adjacent track is put into REC mode Channel Separation 50 dB or more Input signal 1 kHz 10 dBV standard fader position with 1 kHz BPF Measure leakage level when adjacent track is put into REC mode Sync Crosstalk 25 dBV or less...

Страница 7: ... B NR REHEARSAL 1 Master fader MASTER 2 Input playback level control faders INPUT PLAYBACK LEVEL 3 Pan pot knob PAN 4 Record track select switches REC SEL 5 Record track LED 6 Level meter 7 Pitch control knob WIDE PITCH 8 Tape counter reset button RESET 9 Cassette lid Cassette tray Top Panel 10 Transport control buttons Play button PLAY Stop button STOP Fast forward button FF Rewind button REW Rec...

Страница 8: ... 2 3 4 3 Tape out jacks TAPE OUT 1 2 3 4 4 Dolby B noise reduction on off switch DOLBY NR ON OFF 5 Power switch ON STANDBY 6 DC IN connector DC IN 12V 3 ADJUSTING PROCEDURES With constant use the head surface becomes soiled with magnetic particles from the tape dirt and dust Under such conditions the tape will not always be in smooth contact with the head and thus result in poor performance Less 3...

Страница 9: ...own several times close to the head surface On completing the above procedures slowly draw the demagnetizer away from the head and switch it off when it is more than one meter away from the head As demagnetizm in the head cannot be seen unlike the soiled head routine demagnetizing is necessary It is recommended to do so at the same time the head is cleaned 1 2 3 3 2 Test Equipment and Adjusting To...

Страница 10: ...ounting legs or vice versa if it is high NOTE Always adjust the head azimuth and phase when the head height is adjusted 3 6 Check and Adjusting of Head Azimuth Switch off the DOLBY SW Connect an AC volt meter to the TAPE OUT and playback the 12 5 kHz section on the TC 284W test tape Rotate the REC PLAY head azimuth adjusting screw to obtain a maximum output level 1 2 3 3 5 Volume SW setting Input ...

Страница 11: ...rt and the track to be adjusted is put in REC mode Assuming the track 1 to be adjusted the oscilloscope probe is connected to the test point TP104 on the R P PCB assy and rotate and fix the pot R133 220 kΩ at 60 mV Adjust the remaining tracks in the same way Track 2 Track 3 Track 4 Adjust R233 so that the voltage at TP204 is 60 mV Adjust R333 so that the voltage at TP304 is 60 mV Adjust R433 so th...

Страница 12: ...d check if the distortion level is less than 2 1 2 3 3 15 Erasure Measurement Connect a 1 kHz bandpass filter and AC volt meter to TAPE OUT 1 4 and set the controls under the same condition as 3 12 Record a 1 kHz 0 dBV 1 V sine wave signal which is 10 dB higher than the reference recording level on a blank tape Rewind the tape to the start point of recording and advance it by a short length Then r...

Страница 13: ...f the AC volt meter reading is within the following specifications DIN AUDIO 47 dB IHF A 55 dB 1 2 3 3 18 1 Reproduce Set the control as follow Dolby B noise reduction on off switch OFF Put a blank cassette tape and start recording without applying a signal Rewind the tape to the start point and play it back Check if the AC volt meter reading is within the following specifications DIN AUDIO 45 dB ...

Страница 14: ...C adaptor AD 12A JPN 31 8274 1400 00 PCB assy Regulator X 24 32 8216 6800 00 Sheet isolation X 24 33 8277 4470 15 Cable assy 1P earth lug D3 8MF F L150 Ref No Part No Description 1 8259 0500 00 Head erase X 14 24 2 8259 0520 00 Head R P 4T N LR44RS07 X 24 3 8260 4620 00 Pinch roller assy 4 8260 4630 00 Idler arm assy 5 8260 4640 00 Fly wheel assy 6 8260 4650 00 Motor assy 7 8260 4660 00 F R arm as...

Страница 15: ...D 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 BBT 3x8 CZn BBT 3x8 CZn 13 32 BBT 3x8 CZn 31 33 BBT 3x8 CZn ...

Страница 16: ...16 X 24 X 24 TRANSPORT EXPLODED VIEW ...

Страница 17: ...X 24 17 X 24 PCB PATTERN DRAWING MIXER JACK PCBs ...

Страница 18: ...18 X 24 R P REGULATOR PCBs ...

Страница 19: ...410 8230 1384 73 HT carbon 1 4W 47kΩ 5 R111 411 8230 1381 23 HT carbon 1 4W 12kΩ 5 R112 412 8230 1381 04 HT carbon 1 4W 100kΩ 5 R113 413 8230 1381 23 HT carbon 1 4W 12kΩ 5 R114 414 8230 1381 23 HT carbon 1 4W 12kΩ 5 R115 415 8230 1384 73 HT carbon 1 4W 47kΩ 5 R116 416 8230 1382 43 HT carbon 1 4W 24kΩ 5 R117 417 8230 1382 43 HT carbon 1 4W 24kΩ 5 R118 418 8230 1383 03 HT carbon 1 4W 30kΩ 5 R119 419...

Страница 20: ...Description 8274 1340 00 PCB assy Mixer X 24 B001 8251 9681 02 Plain PCB Jack X 24 Ref No Part No Description R101 201 8230 1381 23 Resistor HT carbon 1 4W 12kΩ 5 Ref No Part No Description R102 202 8230 1381 23 Resistor HT carbon 1 4W 12kΩ 5 C101 201 N A C102 202 N A E001 Wire jumper IPS 1041 2 F5 E002 Wire jumper IPS 1041 4 F10 J001 8245 1711 03 Connector PI jack 8283 3P WHT J002 8245 1712 03 Co...

Страница 21: ...n 1 4W 24kΩ 5 Ref No Part No Description R102 402 8230 1381 04 HT carbon 1 4W 100kΩ 5 R103 403 8231 5032 23 R TRIM PIT carbon 22kΩ 637T R105 405 8230 1383 94 HT carbon 1 4W 390kΩ 5 R106 406 8231 5034 71 R TRIM PIT carbon 470Ω 637T R107 407 8230 1383 32 HT carbon 1 4W 3 3kΩ 5 R108 408 8230 1381 81 HT carbon 1 4W 180Ω 5 R109 409 8230 1382 22 HT carbon 1 4W 2 2kΩ 5 R110 410 8230 1383 32 HT carbon 1 4...

Страница 22: ...tor PL jack RCA 4P YKC21 3115 J005 8245 3080 06 Connector PI jack SBRK 6S 4 J006 8245 3080 13 Connector PI jack SBRK 13S 4 J007 8245 3080 08 Connector PI jack SBRK 8S 4 J008 8245 3080 09 Connector PI jack SBRK 9S 4 J009 010 8245 5280 01 Connector PI jack 1P RT 01T 1 0B J011 8245 3080 04 Connector PI jack SBRK 4S 4 J101 8245 5470 05 Connector PI jack PH 5P WHT J201 8245 5471 05 Connector PI jack PH...

Страница 23: ... 1 VCC U101A INPUT FADER 6 0dB 16 0dBV R113 12K 1 2 R131 20KA 2 3 8 4 1 U2A 4560 R114 12K R112 100K VCC VCC 10dBV C113 10 16 R115 47K R126 12K 3 2 U103 DTC144EK VCC C109 10 16 R111 12K D101 1 3 10 1 2 U101B R125 47K D102 R109 30K VCC 3 1 2 U102 DTC144EK VCC A B 4 3 5 C209 10 16 R211 12K D201 D202 VCC REC 2 1 1 4 7 1 3 U201A VCC R225 47K R209 30K 10 11 1 2 PB A B 4 3 5 U201C 1 1 4 U301A VCC C309 10...

Страница 24: ... T301 R329 6 2K D VCC 3 1 2 U307 DTC114TK 3 1 2 U408 DTC114TK BIAS ADJ R431 100 R332 1 C325 220P 1 2 3 4 5 U309 1 TP404 BIAS CURR 1 TP305 C326 0 0015 PP 1 2 3 4 5 J301 1 2 3 R333 220KB D VCC AGND BIAS ADJ R432 1 C425 220P 1 2 3 4 5 U409 1 TP405 C426 0 0015 PP 1 2 3 4 5 J401 1 TP1 1 2 3 R433 220KB D VCC BGND AGND C424 2 2 50 R430 10K R434 2 2K R435 2 2K R436 22 1 3 2 L403 1 TP406 OSC LEVEL C428 0 0...

Страница 25: ...LINE IN INSERT 10dBV 1 2 3 4 TIP RTN RING SEND TRIM TRIM MIC IN 1 3 10dBV 50dBV REC A B REC PB REC A B REC PB REC A B REC PB REC A B REC PB REC A B REC PB 2 3 1 2 3 1 TIP RTN RING SEND TIP RTN RING SEND TIP RTN RING SEND INPUT FADER INPUT FADER INPUT FADER REC A B REC PB REC A B REC PB REC A B REC PB LINE IN INSERT 10dBV LINE IN INSERT 10dBV LINE IN INSERT 10dBV MIC IN 2 4 10dBV 50dBV ...

Страница 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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